CN111148231B

CN111148231B - Information transmission method and node equipment

Info

Publication number: CN111148231B
Application number: CN201811302705.3A
Authority: CN
Inventors: 冯媛; 郑方政; 赵锐; 李晨鑫
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-11-02
Filing date: 2018-11-02
Publication date: 2022-06-10
Anticipated expiration: 2038-11-02
Also published as: CN111148231A; WO2020088314A1

Abstract

The invention provides an information transmission method and node equipment, which solve the problem that how to set a target identifier (destination ID) or a target group identifier (destination group ID) in a unicast or multicast scene does not have a related scheme at present. The method of the invention comprises the following steps: acquiring a high-level identification ID; mapping a high-level identification ID to a bottom-level ID, wherein the bit number of the bottom-level ID is less than or equal to that of the high-level ID; and indicating the bottom layer ID to a receiving node through scheduling control information SCI of a physical direct control channel PSCCH, so that the receiving node determines a transmission mode according to the bottom layer ID and performs corresponding receiving processing according to the transmission mode.

Description

Information transmission method and node equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method and a node device.

Background

Vehicle-to-outside information exchange (V2X) technology can sense the surrounding conditions of a vehicle in real time, share road information and perform early warning in time by means of wireless communication between vehicles, vehicle-to-drive test infrastructures, and vehicles and pedestrians, and has become a research hotspot for solving the problem of road safety in countries in the world at present.

In the existing LTE V2X technology (Rel-14 LTE V2X technology), a PC5 interface (also called a direct link, described as Side link in the protocol) for transmitting data between a User Equipment (UE) and the UE can already support transmission of basic traffic based on road security. The method mainly aims to the service packets with the data packet size of 50-1200bytes, and the transmission reliability of the required service packets in the specified coverage is more than 95%.

With the further development of the car networking technology, some new application scenarios appear, such as: vehicle formation, advanced driving, sensor information sharing, and remote control. Some of these applications require multicast communication between UEs within a group, or unicast communication between two UEs. Therefore, the V2X system needs to consider unicast and multicast scenarios. How to set a destination identifier (destination ID) or a destination group identifier (destination group ID) in a unicast or multicast scenario does not currently have a relevant scheme.

Disclosure of Invention

The invention aims to provide an information transmission method and node equipment, which are used for solving the problem that how to set a target identifier (destination ID) or a target group identifier (destination group ID) in a unicast or multicast scene does not have a relevant scheme at present.

In order to achieve the above object, the present invention provides an information transmission method, applied to a sending node, including:

acquiring a high-level identification ID;

mapping a high-level identification ID to a bottom-level ID, wherein the bit number of the bottom-level ID is less than or equal to that of the high-level ID;

and indicating the bottom layer ID to a receiving node through scheduling control information SCI of a physical direct control channel PSCCH.

For a multicast or unicast sending node, the acquiring a high-level identifier ID includes:

determining a group ID generated by an application high layer as the high layer identification ID;

wherein the group ID remains unchanged during unicast or multicast communication.

Wherein, for the unicast sending node, the acquiring the high-level identifier ID includes:

generating a new terminal UE ID, determining the new terminal UE ID as the high-level identification ID, and keeping the new terminal UE ID unchanged in the unicast communication process;

or, determining the UE ID when the receiving node establishes connection with the sending node as the high-level identifier ID.

Wherein mapping the high-level identification ID to the bottom-level ID comprises:

mapping the high-level identification ID through a preset mapping rule to obtain a bottom-level ID, wherein the bottom-level ID is an ID except a preset ID specified by broadcasting;

Or mapping the high-level identification ID belonging to the unicast transmission mode to a first ID set through a preset mapping rule to obtain a bottom-level ID, and mapping the high-level ID belonging to the multicast transmission mode to a second ID set through a preset mapping rule to obtain a bottom-level ID.

Wherein the predetermined mapping rule comprises: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

or the unicast transmission mode, the multicast transmission mode and the broadcast transmission mode respectively correspond to a bottom layer ID or an ID set, wherein the unicast ID set corresponding to the unicast transmission mode, the multicast ID set corresponding to the multicast transmission mode and the ID corresponding to the broadcast transmission mode are mutually orthogonal.

Wherein, mapping the high-level identification ID to a bottom-level ID, and after the bit number of the bottom-level ID is less than or equal to the bit number of the high-level ID, the method further includes:

scrambling PSSCH by using PSSCH scrambling code of physical straight-through shared channel, and indicating the scrambled PSSCH to a receiving node;

wherein the PSSCH scrambling code comprises a target message or comprises the target message and the content in the PSCCH;

Wherein the target message is a message unrelated to the content in the PSCCH.

In order to achieve the above object, an embodiment of the present invention further provides an information transmission method, applied to a receiving node, including:

acquiring a bottom layer ID indicated by scheduling control information SCI of a sending node through a physical direct control channel PSCCH;

determining a transmission mode of a message sent by a sending node according to the bottom layer ID and a preset mapping rule, wherein the transmission mode comprises a unicast mode, a multicast mode or a broadcast mode;

and according to the determined transmission mode, adopting a corresponding receiving processing method to perform receiving processing, wherein different receiving processing methods are adopted in different transmission modes.

According to the determined transmission mode, a corresponding receiving processing method is adopted for receiving processing, and the method comprises the following steps:

according to the determined transmission mode, carrying out receiving processing according to corresponding QoS processing, wherein the QoS processing at least comprises the following steps: resource preemption processing;

according to the determined transmission mode, carrying out receiving processing according to corresponding hybrid automatic repeat request (HARQ) feedback, wherein the HARQ feedback at least comprises whether feedback resources exist or not;

and/or, according to the determined transmission mode, performing receiving processing according to a corresponding resource exclusion mechanism.

In order to achieve the above object, an embodiment of the present invention further provides a node device, where the node device is a sending node, and the node device includes: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor implementing the steps when executing the program of:

acquiring a high-level identification ID;

Wherein, for a multicast or unicast sending node, the processor executes the program and further implements the following steps:

Wherein, for a unicast sending node, the processor executes the program to further implement the following steps:

Wherein the processor, when executing the program, further implements the steps of:

Wherein the processor when executing the program further implements the steps of:

wherein the target message is a message unrelated to the content in the PSCCH.

In order to achieve the above object, an embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, which, when executed by a processor, implements the steps of the information transmission method applied to the transmitting node as described above.

In order to achieve the above object, an embodiment of the present invention further provides a node device, where the node device is a receiving node, and the node device includes: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor implementing the steps when executing the program of:

and according to the determined transmission mode, adopting a corresponding receiving processing method to perform receiving processing, wherein different transmission modes adopt different receiving processing methods.

according to the determined transmission mode, carrying out receiving processing according to corresponding quality of service (QoS) processing, wherein the QoS processing at least comprises the following steps: resource preemption processing;

In order to achieve the above object, an embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, which, when executed by a processor, implements the steps of the information transmission method applied to the receiving node as described above.

In order to achieve the above object, an embodiment of the present invention further provides a node device, where the node device is a sending node, and the node device includes:

the first acquisition module is used for acquiring a high-level identification ID;

the mapping module is used for mapping the high-level identification ID to a bottom-level ID, and the bit number of the bottom-level ID is less than or equal to that of the high-level ID;

and the first indicating module is used for indicating the bottom layer ID to a receiving node through scheduling control information SCI of a physical direct control channel PSCCH.

The first acquisition module is used for determining a group ID generated by an application high layer as the high layer identification ID for a multicast or unicast sending node;

The first obtaining module is configured to generate a new terminal UE ID for a unicast sending node, determine the new terminal UE ID as the high-level identifier ID, and keep the new terminal UE ID unchanged during unicast communication;

or, determining the UE ID when the receiving node establishes connection with the sending node as the high-level identification ID.

The mapping module is used for mapping the high-level identification ID through a preset mapping rule to obtain a bottom-level ID, wherein the bottom-level ID is an ID except a preset ID specified by broadcasting;

or, the method is used for mapping the high-level identification ID belonging to the unicast transmission mode to the first ID set through a predetermined mapping rule to obtain the bottom-level ID, and mapping the high-level ID belonging to the multicast transmission mode to the second ID set through a predetermined mapping rule to obtain the bottom-level ID.

Wherein, above-mentioned node equipment still includes:

the second indicating module is used for scrambling the PSSCH by using a PSSCH scrambling code of a physical direct shared channel (PRSCH), and indicating the PSSCH after scrambling to a receiving node;

wherein the target message is a message unrelated to the content in the PSCCH.

In order to achieve the above object, an embodiment of the present invention further provides a node device, where the node device is a receiving node, and the node device includes:

the second acquisition module is used for acquiring the bottom layer ID indicated by the scheduling control information SCI of the sending node through the physical direct control channel PSCCH;

a determining module, configured to determine, according to the bottom layer ID and a predetermined mapping rule, a transmission mode in which a sending node sends a message, where the transmission mode includes a unicast mode, a multicast mode, or a broadcast mode;

and the processing module is used for performing receiving processing by adopting a corresponding receiving processing method according to the determined transmission mode, wherein different transmission modes adopt different receiving processing methods.

Wherein, the processing module is used for performing receiving processing according to the determined transmission mode and corresponding quality of service (QoS) processing, and the QoS processing at least comprises: resource preemption processing;

The embodiment of the invention has the following beneficial effects:

according to the technical scheme of the embodiment of the invention, the high-level identification ID is obtained; mapping a high-level identification ID to a bottom-level ID, wherein the bit number of the bottom-level ID is less than or equal to that of the high-level ID; and indicating the bottom layer ID to a receiving node through scheduling control information SCI of a physical direct control channel PSCCH, so that the receiving node determines a transmission mode according to the bottom layer ID and performs corresponding receiving processing according to the transmission mode.

Drawings

FIG. 1 is a schematic diagram of SL-SCH;

fig. 2 is a flowchart illustrating an information transmission method according to an embodiment of the present invention;

FIG. 3 is a second schematic flow chart illustrating an information transmission method according to an embodiment of the present invention;

fig. 4 is a block diagram of a node device according to an embodiment of the present invention;

fig. 5 is a block diagram of a node device according to an embodiment of the present invention;

fig. 6 is a second block diagram of a node device according to the second embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings.

In order to enable those skilled in the art to better understand the information transmission method of the embodiment of the present invention, the following description is made.

In the embodiment of the invention, the media access control MAC layer is divided into unicast, multicast and broadcast, but the physical layer PHY is totally broadcast, and the bottom layer is not distinguished.

As shown in FIG. 1, the through logical channel (SL-SCH) header consists of 7 fields to form V/R/R/R/SRC/DST with a fixed length of 7 bytes. The receiving terminal distinguishes different transmitting users through the SRC. Wherein each field represents the meaning as shown in table 1.

Field(s)	Size and breadth	Meaning and assignment
			V	4bits	"0011" stands for broadcast
R	1bit	Reserved bit, 0
			R	1bit	Reserved bit, 0
R	1bit	Reserved bit, 0
			R	1bit	Reserved bit, 0
DST	24bit	Object ID
			SRC	24bit	ProSe UE ID

TABLE 1

Wherein, SRC: source Layer two ID (source Layer-2ID), the UE is self-assigned from the generated ProSe-based Services UE ID.

In addition, the target ID is not included in the SCI, the total length of the SA (SCI) is 48bits (32 bits are left in addition to 16-bit CRC), and the indicated fields and the corresponding number of bits are defined as follows:

priority: 3 bits;

resource reservation: 4 bits;

frequency domain resource positions of initial transmission and retransmission;

time interval between initial transmission and retransmission: 4 bits;

modulation and coding MCS: 5 bits;

and (4) retransmission indication: 1bit, which indicates whether the current transmission is the initial transmission or the retransmission;

the bits are reserved.

In addition, the application layer identifier, i.e., the temporary ID in the msg message, i.e., the change of L2ID, is related to the following factors:

1) t5000 timer: the value can be configured, 1-65535 seconds;

2) change of geographic position: if the change of the geographic position within 5min is less than 2km, the certificate can be unchanged;

3) citical event flag: i.e. in relation to the priority of the message, and not for high priority service packets.

That is, L2ID is a variable of per UE granularity.

As shown in fig. 2, an embodiment of the present invention provides an information transmission method, which is applied to a sending node, where the sending node may specifically be a terminal, and the method includes:

Step 201: and acquiring a high-level identification ID.

In the embodiment of the invention, the media access control MAC layer is divided into unicast, multicast and broadcast, but the physical layer PHY is totally broadcast, and the bottom layer is not distinguished. The higher layer ID includes a destination ID in unicast or a destination group ID (destination group ID) in multicast.

As an optional implementation manner, for a multicast or unicast sending node, the acquiring a higher layer identifier ID includes:

and determining the group ID generated by the application high layer as the high layer identification ID.

Here, a group ID generated by a higher layer (higher layer generated when grouped for a group head node) is applied as a higher layer ID; the group ID remains unchanged during this communication, and the group ID may be multi-bit or, like the underlying indication, 8-bit, for example.

Newly generating a group ID (or connection ID) for a node participating in unicast; the group ID is kept unchanged in the communication process, and is equivalent to that the node pairs participating in unicast communication are associated through the group ID, and the group ID is similar to multicast communication; such as determining to be decided by the UE initiating the connection establishment or by the UE responding to the connection establishment; if the responding UE has maintained the same ID, it may be rejected, and the UE initiating the connection establishment may reselect a new ID randomly, and the group ID may be multi-bit, or may be 8 bits as indicated by the bottom layer.

In the implementation mode, for the multicast node, the source UE and the target UE negotiate or interact in the connection establishment process, and the high-level identification is determined by a group head; for unicast nodes, the higher layer identification may be negotiated for interaction and acknowledgement by the sending node initiating the connection establishment request and the receiving node responding to the connection establishment request.

As another optional implementation manner, for a unicast sending node, the acquiring a higher layer identifier ID includes:

and generating a new terminal UE ID, and determining the new terminal UE ID as the high-level identification ID, wherein the new terminal UE ID is kept unchanged in the unicast communication process.

The new terminal UE ID may be specifically a new prose UE ID (near end UE ID). For broadcasting, a high layer performs change processing according to the existing mechanism, for unicast, a new prose UE ID is introduced, the prose UE ID remains unchanged in the unicast communication process, which is equivalent to that nodes participating in unicast communication each have their own prose UE ID, two prose UE IDs are provided for both sides of one unicast communication, and the prose UE ID may be multi-bit, or may be 8-bit as same as the bottom layer indication.

The UE ID in the embodiment of the present invention is specifically a prose UE ID. Here, both communication parties only maintain the procedure UE ID at the time of connection establishment, and once sent out, the procedure UE ID remains unchanged throughout the communication process. I.e. the actual higher layer ID of the UE changes according to existing rules, but the SCI indicates the pro UE ID initially used for connection establishment.

It should be noted that, the high layer ID information needs to be interacted during the connection establishment process, whether unicast or multicast. Such as interacting in the following two ways.

1) The connection establishment physical layer message contains the high layer ID (layer two ID) information; for the receiving end, this information is directly known by the physical layer. When the unicast message is sent, the bottom layer directly performs mapping and then sends the unicast message.

2) Connection establishment procedure, pure physical layer information does not contain the higher layer ID message, but the connection establishment procedure relates to higher layer information, and a resource UE (source L2ID) is contained in a PDU header of a MAC protocol data unit. Namely, the receiving end needs to know through interlayer interaction after high-level analysis. And the data is sent to a physical layer by a high layer, and the physical layer is mapped and then stored, or the high layer is directly mapped and then stored.

Step 202: and mapping the high-level identification ID into a bottom-level ID, wherein the bit number of the bottom-level ID is less than or equal to that of the high-level ID.

In the embodiment of the invention, the high-level ID with larger bit number is mapped into the bottom-level ID with smaller bit number by the preset mapping rule, thereby reducing the signaling overhead. The predetermined mapping rule includes: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

or, the unicast transmission mode, the multicast transmission mode and the broadcast transmission mode respectively correspond to one bottom layer ID or ID set. And the unicast ID set corresponding to the unicast transmission mode, the multicast ID set corresponding to the multicast transmission mode and the ID corresponding to the broadcast transmission mode are mutually orthogonal. Namely, the unicast ID set, the multicast ID set and the broadcast ID are mutually orthogonal pairwise.

Specifically, the step 202 includes:

and mapping the high-level identification ID through a preset mapping rule to obtain a bottom-level ID, wherein the bottom-level ID is an ID except the preset ID specified by broadcasting.

For example, a broadcast specifies a particular ID, such as all 0 s or all 1 s, and the other IDs are mapped by a specific rule to be mapped to other IDs except the broadcast ID. I.e. unicast and multicast, are not further distinguished.

For example, a broadcast specifies a special ID, such as all 0 s or all 1 s, and is divided into two for the other IDs, a unicast ID and a multicast ID. For example, the broadcast ID is defined as 255, the unicast ID is defined as (0, 100), the multicast ID is defined as (101, 254), and the unicast higher layer IDs (the destination ID and the multicast destination group ID) can be mapped to the 8-bit lower layer ID by some mapping rule.

Step 203: and indicating the bottom layer ID to a receiving node through scheduling control information SCI of a physical direct control channel PSCCH.

Further, mapping the high-level ID to a bottom-level ID, where after the bit number of the bottom-level ID is less than or equal to the bit number of the high-level ID, the method further includes:

Wherein the target message is a message unrelated to the content in the PSCCH.

The content of the target message is not particularly limited.

At present, when scrambling code design is carried out, PSCCH does not carry out terminal-specific (ue-specific) scrambling, the scrambling of PSSCH is related to Cyclic Redundancy Check (CRC) of PSCCH, and the CRC of PSCCH is related to the content of PSCCH. I.e. if the PSCCH resolves correctly, the PSCCH content can also resolve correctly. The privacy protection degree of the PSSCH by the scrambling mode is low. In the embodiment of the invention, a message irrelevant to the content in the PSCCH is used as a PSSCH scrambling code to scramble the PSSCH, or a target message and the content in the PSCCH are used to scramble the PSSCH, the content in the PSCCH and the PSSCH scrambling code have a mapping relation, and the mapping relation is determined by negotiation between a transmitting node and a receiving node in the connection establishment process.

In the embodiment of the invention, the PSSCH is not directly scrambled by the target ID or the target group ID, but is scrambled by the target message or the target message and the content in the PSCCH, thereby enhancing the privacy protection of the PSSCH.

The information transmission method of the embodiment of the invention obtains the high-level identification ID; mapping a high-level identification ID to a bottom-level ID, wherein the bit number of the bottom-level ID is less than or equal to that of the high-level ID; and indicating the bottom layer ID to a receiving node through scheduling control information SCI of a physical direct control channel PSCCH, so that the receiving node determines a transmission mode according to the bottom layer ID and performs corresponding receiving processing according to the transmission mode.

The information transmission method of the present invention will be described with reference to specific embodiments.

The first embodiment is as follows: both communicating parties only maintain the prose UE ID at the time of connection establishment.

The nodes A and B establish unicast communication, wherein the current prose UE ID (source L2 ID) of A is '11111111111100000000000', and the current prose UE ID (source L2 ID) of B is '000000000000111111111111'. In the unicast communication process, the prose UE ID of the a node changes many times (111000000000000000000000, 111111110000000000000000000, etc.), and the prose UE of the B node also changes many times (111111111111111111110000000, 0000000000000000000000001111, etc.); however, as long as the physical layer ID is indicated in the a and B node SCI during the unicast communication of the a and B nodes, the MAC ID may be changed with the change, but the physical layer ID is not changed, with reference to the current ID "11111111111100000000000", "000000000000111111111111".

Example two: for nodes participating in unicast, a group ID is newly generated.

The A node initiates connection establishment, and a connection ID, "11111111111100000000000" is randomly selected and generated by a high layer or a bottom layer, and mapping is carried out subsequently, or an 8-bit "11100011" is directly generated and directly used for a physical layer ID.

And newly generating a prose UE ID, and the same way. But only by the respective higher layer of the user.

As shown in fig. 3, an embodiment of the present invention further provides an information transmission method, which is applied to a receiving node, where the receiving node may specifically be a terminal, and the method includes:

step 301: and acquiring the bottom layer ID indicated by the scheduling control information SCI of the physical direct control channel PSCCH of the sending node.

Step 302: and determining a transmission mode of the message sent by the sending node according to the bottom layer ID and a preset mapping rule, wherein the transmission mode comprises a unicast mode, a multicast mode or a broadcast mode.

The predetermined mapping rule includes: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

Or, the unicast transmission mode, the multicast transmission mode and the broadcast transmission mode respectively correspond to one bottom layer ID or ID set. And the unicast ID set corresponding to the unicast transmission mode, the multicast ID set corresponding to the multicast transmission mode and the ID corresponding to the broadcast transmission mode are mutually orthogonal.

Step 303: and according to the determined transmission mode, adopting a corresponding receiving processing method to perform receiving processing, wherein different transmission modes adopt different receiving processing methods.

Specifically, according to the determined transmission mode, performing reception processing according to corresponding QoS processing, where the QoS processing at least includes: resource preemption processing;

Wherein, the resource preemption processing comprises: the unicast priority is set to be highest, the multicast priority is second, the broadcast priority is lowest, and the high priority can preempt the low priority resource.

Here, the resource exclusion processing may be to set different resource exclusion levels for different transmission modes, for example, set the highest strict resource exclusion for the resource occupied by the unicast, set the higher strict resource exclusion for the resource occupied by the multicast, and set the lowest priority resource exclusion for the resource occupied by the broadcast; here, strict or not may be represented by the number of times of resource occupation, may be threshold setting of measurement amount, and the like.

In the embodiment of the invention, for the receiving node, the specific communication mode, namely unicast multicast and broadcast, can be judged through the ID category and the ID value; for different communication modes, different processing mechanisms can be adopted, for example, for unicast, feedback resources are defaulted; for multicast, there are no feedback resources; alternatively, a different process may be employed in the resource exclusion process.

The information transmission method of the embodiment of the invention obtains the bottom layer ID indicated by the scheduling control information SCI of the sending node through the physical direct control channel PSCCH; determining a transmission mode of a message sent by a sending node according to the bottom layer ID and a preset mapping rule; and according to the determined transmission mode, adopting a corresponding receiving processing method to perform receiving processing, wherein different transmission modes adopt different receiving processing methods.

As shown in fig. 4, an embodiment of the present invention further provides a node device, where the node device is a sending node, and specifically, the node device is a terminal, and the node device includes: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:

Acquiring a high-level identification ID;

Where in fig. 4, the bus architecture may include any number of interconnected buses and bridges, with various circuits of one or more processors, represented by processor 400, and memory, represented by memory 420, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 410 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 430 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.

Optionally, for a multicast or unicast sending node, the processor 400 is further configured to read the program in the memory 420, and perform the following steps:

Optionally, for a unicast sending node, the processor 400 is further configured to read a program in the memory 420, and perform the following steps:

Optionally, the processor 400 is further configured to read the program in the memory 420, and perform the following steps:

Optionally, the predetermined mapping rule includes: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

The processor 400 is also used to read the program in the memory 420 and execute the following steps:

wherein the target message is a message unrelated to the content in the PSCCH.

The node equipment of the embodiment of the invention obtains a high-level identification ID; mapping a high-level identification ID to a bottom-level ID, wherein the bit number of the bottom-level ID is less than or equal to that of the high-level ID; and indicating the bottom layer ID to a receiving node through scheduling control information SCI of a physical direct control channel PSCCH, so that the receiving node determines a transmission mode according to the bottom layer ID and performs corresponding receiving processing according to the transmission mode.

In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

acquiring a high-level identification ID;

When executed by the processor, the program can implement all the implementation manners in the above method embodiment applied to the sending node, and details are not described here to avoid repetition.

As shown in fig. 5, an embodiment of the present invention further provides a node device, where the node device is a sending node, and the node device includes:

a first obtaining module 501, configured to obtain a high-level identifier ID;

a mapping module 502, configured to map a high-level identifier ID to a bottom-level ID, where a bit number of the bottom-level ID is less than or equal to a bit number of the high-level ID;

a first indicating module 503, configured to indicate the bottom layer ID to the receiving node through the scheduling control information SCI of the physical direct control channel PSCCH.

In the node device according to the embodiment of the present invention, the first obtaining module 501 is configured to determine, as the high-level identifier ID, a group ID generated by a high-level application for a multicast or unicast sending node;

In the node device of the embodiment of the present invention, the first obtaining module 501 is configured to generate a new terminal UE ID for a unicast sending node, determine the new terminal UE ID as the high-level identifier ID, and keep the new terminal UE ID unchanged in a unicast communication process;

In the node device of the embodiment of the present invention, the mapping module 502 is configured to map the high-level identifier ID according to a predetermined mapping rule to obtain a bottom-level ID, where the bottom-level ID is an ID other than a predetermined ID specified in a broadcast;

In the node device of the embodiment of the present invention, the predetermined mapping rule includes: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

The node device of the embodiment of the present invention further includes:

wherein the target message is a message unrelated to the content in the PSCCH.

An embodiment of the present invention further provides a node device, where the node device is a receiving node, and the communication device is specifically a terminal, and the node device includes: a transceiver, a memory, a processor and a program stored in the memory and capable of running on the processor, wherein the block diagram of the receiving end is the same as the block diagram of fig. 4, and the processor executes the program to implement the following steps:

Optionally, the processor further implements the following steps when executing the program:

The node equipment of the embodiment of the invention obtains the bottom layer ID indicated by the scheduling control information SCI of the sending node through the physical direct control channel PSCCH; determining a transmission mode of a message sent by a sending node according to the bottom layer ID and a preset mapping rule; and according to the determined transmission mode, adopting a corresponding receiving processing method to perform receiving processing, wherein different transmission modes adopt different receiving processing methods.

When executed by the processor, the program can implement all the implementation manners in the above-described method embodiment applied to the receiving node, and details are not described here again to avoid repetition.

As shown in fig. 6, an embodiment of the present invention further provides a node device, where the node device is a receiving node, and the node device includes:

a second obtaining module 601, configured to obtain a bottom layer ID indicated by scheduling control information SCI of a physical direct control channel PSCCH of a sending node;

a determining module 602, configured to determine, according to the bottom layer ID and a predetermined mapping rule, a transmission mode in which a sending node sends a message, where the transmission mode includes a unicast mode, a multicast mode, or a broadcast mode;

the processing module 603 is configured to perform receiving processing by using a corresponding receiving processing method according to the determined transmission mode, where different transmission modes use different receiving processing methods.

In the node device of the embodiment of the present invention, the processing module is configured to perform, according to the determined transmission mode, reception processing according to corresponding QoS processing, where the QoS processing at least includes: resource preemption processing;

In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not imply an order of execution, and the order of execution of the processes should be determined by their functions and inherent logic, and should not limit the implementation process of the embodiments of the present invention in any way.

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

Claims

1. An information transmission method applied to a sending node is characterized by comprising the following steps:

acquiring a high-level identification ID;

indicating the bottom layer ID to a receiving node through scheduling control information SCI of a physical direct control channel PSCCH;

for a multicast or unicast sending node, the acquiring a higher layer identifier ID includes:

determining a group ID generated by an application high layer as the high layer identification ID; wherein the group ID remains unchanged during unicast or multicast communication;

Or, for a unicast sending node, the acquiring the higher layer identifier ID includes:

generating a new terminal UE ID, determining the new terminal UE ID as the high-level identification ID, and keeping the new terminal UE ID unchanged in the unicast communication process; or, determining the UE ID when the receiving node establishes connection with the sending node as the high-level identification ID.

2. The information transmission method of claim 1, wherein mapping the higher layer identification ID to the lower layer ID comprises:

3. The information transmission method according to claim 2, wherein the predetermined mapping rule includes: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

4. The information transmission method according to claim 1, wherein mapping the higher layer ID to a lower layer ID, the lower layer ID having a bit number less than or equal to a bit number of the higher layer ID, further comprises:

wherein the target message is a message unrelated to the content in the PSCCH.

5. An information transmission method applied to a receiving node is characterized by comprising the following steps:

acquiring a bottom layer ID indicated by scheduling control information SCI of a physical direct control channel PSCCH (physical direct control channel), wherein the bottom layer ID is generated by mapping a high layer ID, the high layer ID is a group ID generated by an application high layer, and the group ID is kept unchanged in the unicast or multicast communication process; or the high-level ID is a new terminal UE ID which is kept unchanged in the unicast communication process, or the high-level ID is a UE ID when the receiving node establishes connection with the sending node;

6. The information transmission method according to claim 5, wherein the predetermined mapping rule comprises: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

7. The information transmission method according to claim 5, wherein the receiving process is performed by using a corresponding receiving processing method according to the determined transmission mode, and the method comprises:

8. A node device, the node device being a sending node, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of:

acquiring a high-level identification ID;

for a multicast or unicast sending node, the processor executes the program and further implements the following steps:

or, for a unicast sending node, the processor executes the program and further implements the following steps:

9. The node apparatus of claim 8, wherein the processor when executing the program further performs the steps of:

10. The node device of claim 9, wherein the predetermined mapping rule comprises: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

11. The node apparatus of claim 8, wherein the processor when executing the program further performs the steps of:

wherein the target message is a message unrelated to the content in the PSCCH.

12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the information transmission method according to any one of claims 1 to 4.

13. A node device, the node device being a receiving node, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of:

14. The node device of claim 13, wherein the predetermined mapping rule comprises: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

15. The node apparatus of claim 13, wherein the processor when executing the program further performs the steps of:

16. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the information transmission method according to any one of claims 5 to 7.

17. A node device, the node device being a sending node, comprising:

the first indicating module is used for indicating the bottom layer ID to a receiving node through scheduling control information SCI of a physical direct control channel PSCCH;

the first acquisition module is used for determining a group ID generated by an application high layer as the high layer identification ID for a multicast or unicast sending node; wherein the group ID remains unchanged during unicast or multicast communication;

Or, the first obtaining module is configured to generate a new terminal UE ID for a unicast sending node, determine the new terminal UE ID as the high-level identifier ID, and keep the new terminal UE ID unchanged during unicast communication; or, determining the UE ID when the receiving node establishes connection with the sending node as the high-level identification ID.

18. The node device of claim 17, wherein the mapping module is configured to map the higher-layer ID according to a predetermined mapping rule to obtain a lower-layer ID, where the lower-layer ID is an ID other than a predetermined ID specified in a broadcast;

19. The node device of claim 18, wherein the predetermined mapping rule comprises: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

20. The node device of claim 17, further comprising:

the second indicating module is used for scrambling the PSSCH by using a PSSCH scrambling code of a physical direct-through shared channel (PRSCH), and indicating the PSSCH after scrambling to a receiving node;

wherein the target message is a message unrelated to the content in the PSCCH.

21. A node device, the node device being a receiving node, comprising:

a second obtaining module, configured to obtain a bottom ID indicated by scheduling control information SCI of a physical direct control channel PSCCH, where the bottom ID is generated by mapping a top ID, the top ID is a group ID generated by an application top, and the group ID remains unchanged in a unicast or multicast communication process; or the high-level ID is a new terminal UE ID which is kept unchanged in the unicast communication process, or the high-level ID is a UE ID when the receiving node establishes connection with the sending node;

and the processing module is used for receiving and processing by adopting a corresponding receiving and processing method according to the determined transmission mode, wherein different receiving and processing methods are adopted in different transmission modes.

22. The node device of claim 21, wherein the predetermined mapping rule comprises: the broadcast transmission mode corresponds to a preset bottom layer ID, the unicast transmission mode and the multicast transmission mode correspond to a shared ID set, and the shared ID set is orthogonal to the preset bottom layer ID;

23. The node device of claim 21, wherein the processing module is configured to perform receiving processing according to a corresponding QoS processing according to the determined transmission mode, and the QoS processing at least includes: resource preemption processing;