CN116939048A - Data transmission method, device, related equipment and storage medium - Google Patents

Abstract

The application discloses a data transmission method, a data transmission device, a transmitting terminal device, a receiving terminal device and a storage medium. The method comprises the following steps: a transmitting end device transmits a Medium Access Control (MAC) Protocol Data Unit (PDU); the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is a logical channel or is a new type bearer, where the second information indicates an identifier of the logical channel when the first information indicates that the type of the MAC PDU bearer is a logical channel, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identifier of the new type bearer.

Description

Data transmission method, device, related equipment and storage medium

Technical Field

The present application relates to the field of wireless communications, and in particular, to a data transmission method, apparatus, related device, and storage medium.

Background

As shown in fig. 1, a design objective of a very simple Network (Lite Network) for next-generation mobile communication is to introduce a User Plane (UP) function (which may also be referred to as a data Plane function) in Layer three (L3, layer 3) for data processing. After the UP function is introduced, in the sixth generation mobile communication technology (6G) system, an Upper Layer (english may be expressed as Upper Layer) protocol Layer of a Medium Access Control (MAC) Layer may be a Radio Link Control (RLC) protocol Layer, or may be another protocol Layer, that is, there may be multiple bearers, in which case, how to effectively identify the bearers has not yet been effectively solved.

Disclosure of Invention

In order to solve the related technical problems, the embodiment of the application provides a data transmission method, a data transmission device, related equipment and a storage medium.

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

the embodiment of the application provides a data transmission method, which is applied to a transmitting terminal device and comprises the following steps:

transmitting a MAC Protocol Data Unit (PDU); the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is a Logical Channel (LC), or is a new type bearer, where the second information indicates an identity of the LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

In the above scheme, the sub-header of the MAC PDU includes the first information and the second information.

In the above scheme, the novel bearer comprises at least one of the following:

the MAC layer is directly connected with a Service Data Adaptation Protocol (SDAP) layer;

the MAC layer is directly connected with the layer for realizing the UP function of L3;

the MAC layer is directly connected with a Radio Resource Control (RRC) layer;

The MAC layer and the SDAP layer bear no connection;

the MAC layer is in connectionless bearing with the layer of L3 for realizing the UP function;

the MAC layer has no bearer connected to the RRC layer.

In the above solution, in the case where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the method further includes:

receiving a data packet sent by an upper layer directly connected with the MAC layer;

distributing a novel bearing identifier for the bearing connected with the upper layer by the MAC layer;

and constructing the MAC PDU.

In the scheme, the novel bearing identifier is distributed for the bearing connected with the upper layer by utilizing the corresponding relation between the bearing identifier directly connected with the upper layer by the MAC layer and the novel bearing identifier.

In the above scheme, the method further comprises:

and obtaining the corresponding relation.

In the above scheme, the transmitting end device includes a terminal, and the receiving end device receives the correspondence sent by the receiving end device, where the receiving end device includes a network device.

In the above scheme, the transmitting end device includes a network device; the method further comprises the steps of:

and sending the corresponding relation to receiving end equipment, wherein the receiving end equipment comprises a terminal.

The embodiment of the application also provides a data transmission method applied to the receiving end equipment, comprising the following steps:

Receiving a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

In the above scheme, the sub-header of the MAC PDU includes the first information and the second information.

In the above scheme, the novel bearer comprises at least one of the following:

the MAC layer is directly connected with the SDAP layer;

the MAC layer is directly connected with the layer for realizing the UP function of L3;

the MAC layer is directly connected with the RRC layer;

the MAC layer and the SDAP layer bear no connection;

the MAC layer is in connectionless bearing with the layer of L3 for realizing the UP function;

the MAC layer has no bearer connected to the RRC layer.

In the above solution, in the case where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the method further includes:

determining an upper layer of the MAC PDU directly connected to a MAC layer;

and transmitting the MAC service data unit SDU corresponding to the MAC PDU to the upper layer.

In the above scheme, the upper layer directly connected with the MAC layer of the MAC PDU is determined by using the correspondence between the bearer identifier directly connected with the upper layer of the MAC layer and the new bearer identifier and the second information.

In the above scheme, the method further comprises:

and obtaining the corresponding relation.

In the above scheme, the transmitting end device includes a network device; the obtaining the correspondence relationship includes:

and receiving the corresponding relation sent by the sending terminal equipment.

In the above solution, the transmitting end device includes a terminal, and the method further includes:

and sending the corresponding relation to the sending end equipment, wherein the receiving end equipment comprises network equipment.

The embodiment of the application also provides a data transmission device, which comprises:

a first transmitting unit configured to transmit a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

The embodiment of the application also provides a data transmission device, which comprises:

a receiving unit for receiving the MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

The embodiment of the application also provides a transmitting end device, which comprises: a first processor and a first communication interface; wherein,,

the first communication interface is used for sending the MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

The embodiment of the application also provides receiving end equipment, which comprises: a second processor and a second communication interface; wherein,,

the second communication interface is configured to receive a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

The embodiment of the application also provides a transmitting end device, which comprises: 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 method step on the transmitting side when running the computer program.

The embodiment of the application also provides receiving end equipment, which comprises: 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 method step on the receiving end equipment side when the computer program is run.

The embodiment of the application also provides a storage medium, on which a computer program is stored, the computer program, when executed by a processor, implements the steps of any method at the transmitting end device side or implements the steps of any method at the receiving end device side.

The data transmission method, the data transmission device, the related equipment and the storage medium provided by the embodiment of the application, wherein the sending end equipment sends the MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the second information indicates an identity of the new type bearer when the first information indicates that the type of the MAC PDU bearer is a new type bearer; and the receiving end equipment receives the MAC PDU, the scheme provided by the embodiment of the application defines new information in the existing MAC PDU to indicate new bearing, and according to the indication, realizes the expansion of the bearing ID domain, namely, the indication of different types of bearing is carried in the existing MAC PDU, thereby realizing the expansion based on the existing PAC PDU, and having simple realization and small influence on the protocol.

Drawings

Fig. 1 is a functional schematic diagram of an Access Stratum (AS) protocol stack of a 6G network;

fig. 2 is a schematic diagram of an end-to-end wireless link topology plan of a network according to embodiment 6G of the present application;

fig. 3 is a flow chart of a method for data transmission according to an embodiment of the application;

FIGS. 4a-4c are diagrams illustrating MAC PDU subheader formats according to embodiments of the present application;

FIG. 5 is a flowchart of another method for data transmission according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 7 is a schematic diagram of another data transmission device according to an embodiment of the present application;

fig. 8 is a schematic diagram of a transmitting device structure according to an embodiment of the present application;

fig. 9 is a schematic diagram of a receiving-end device according to an embodiment of the present application;

fig. 10 is a schematic diagram of a data transmission system according to an embodiment of the application.

Detailed Description

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

The design goal of the Lite Network facing the next generation mobile communication proposes to introduce an UP protocol layer (i.e. UP function) at L3 for data processing, and no matter whether layer 2 (L2) still exists other protocol entities (in the fifth generation mobile communication technology (5G) system, L2 includes four protocol layers (may also be called protocol sublayers or layers) of SDAP, packet Data Convergence Protocol (PDCP), RLC and MAC), each protocol layer corresponds to a corresponding protocol entity (may also be called protocol function entity)), the UP protocol entity of the UP protocol layer of L3 is directly connected with the MAC protocol entity of L2.

In the third generation mobile communication technology (3G), the fourth generation mobile communication technology (4G), and the 5G system, on the terminal side, only a Control Plane (CP) function of the AS, that is, only an RRC protocol layer; accordingly, on the network side, there is also only CP functionality, i.e. only RRC protocol layer, at the Radio Access Network (RAN). The RRC protocol layer completes the radio resource control function and has no data processing function of the UP protocol layer. Wherein the UP function, i.e. the L3 UP protocol layer, may be introduced in L3 of AS and RAN (RRC layer of AS and RAN in 5G system is called 3 layer protocol), AS shown in fig. 1.

After the L3 UP protocol layer is introduced, the packet processing (english may be expressed AS Packet Processing) function of the L2 of the AS is redesigned, and the new packet processing function of the L2 is mainly to accept the characteristics of the upper layer service data, and combines the channel characteristics of the lower layer air interface to form a quality of service (QoS) index and operation that both the air interface and the service characteristics are considered. For L3 of AS, the UP function of newly added L3 processes the packet in addition to the CP function (i.e., RRC protocol layer) of the conventional L3. In particular, the method comprises the steps of,

at the UP protocol layer of L3, there is a first or more than one transmission function of an Internet Protocol (IP) packet. With the introduction of the UP function of L3, the existing data processing function of L2 needs to be redefined. That is, the introduction of the L3 UP function brings a new way of AS data processing, and can realize seamless and lossless forwarding of data when a user moves.

Fig. 2 is a schematic diagram of a 6G flexible protocol stack scheme, and it can be seen from fig. 2 that there are multiple corresponding relationships between different protocol layers, and multiple functional units may exist in the same functional protocol layer at the same time. All links connecting the MAC protocol layer functional bodies are numbered uniformly, and then the links traverse to the positions of the protocol stack sub-layer functional bodies of L3 in sequence, and all protocol layer functional bodies and the connections between the protocol layer functional bodies are called an end-to-end wireless link. The identification of the end-to-end wireless link, such as ID, is the value of the unified number of the link connecting the MAC protocol layer functions, such as the links from 0 to n connecting MACs identified in fig. 2.

On the other hand, in the related art, a format definition for MAC PDU:

1. carrying out uplink and downlink data transmission by taking a Logical Channel ID (LCID) as a carrier; the different values of LCID may identify the LC carrying data, (i.e., the bearer in which the MAC protocol layer is directly connected to the RLC protocol layer), and may also identify the MAC Control Element (CE).

2. Carrying the length of the data packet.

However, as can be seen from fig. 2, in the 6G system, there may be a plurality of directly adjacent upper layers of the MAC protocol layer, and different upper layers may have different connection bearer forms with the MAC protocol layer. Whereas in 5G systems the RLC protocol layer is the only directly adjacent upper layer to the MAC protocol layer.

Therefore, for multiple connection bearer types, an indication needs to be made in the MAC PDU.

Based on this, in various embodiments of the present application, new information is defined in the existing MAC PDU to indicate a new bearer, and according to the indication, the extension of the bearer ID field is implemented, that is, the indication of different types of bearers is carried in the existing MAC PDU, so that the extension based on the existing PAC PDU is implemented, so that the implementation is simple and the influence on the protocol is small.

The embodiment of the application provides a data transmission method, which is applied to a transmitting end device, as shown in fig. 3, and comprises the following steps:

step 301: constructing a MAC PDU;

step 302: transmitting the MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

In practical application, the transmitting end device may include a network device (specifically, may be a base station), and the receiving end device may include a terminal; the transmitting end device may further comprise a terminal, and the receiving end device may accordingly comprise a network device.

Here, the terminal may also be referred to as a User Equipment (UE), a user, or the like.

In step 301, at the MAC layer of the transmitting end device, service data packets and/or signaling data packets are received from an upper layer of different bearers, and MAC PDUs are assembled using the received data packets.

In general, the receiving end device obtains the corresponding information by parsing the sub-header of the MAC PDU, so that the receiving end device is compatible with the related art and is easy to implement, and the first information and the second information may be set in the sub-header of the MAC PDU (english may be expressed as a sub-header, i.e. a header of the PDU), that is, redefined for the existing MAC PDU, to indicate different bearer types. That is, the sub-header of the MAC PDU contains the first information and the second information.

In practical applications, the bearers connected to the MAC can be divided into two main categories:

the first type, the bearer where the conventional MAC layer and RLC layer are directly connected, i.e., LC, is shown in fig. 2;

the second type of new bearer, which may also be called as an extended bearer, in the embodiment of the present application, the name of the new bearer is not limited, and the new bearer mainly includes a MAC layer, an SDAP layer, an L3 UP layer (i.e., a layer for implementing an UP function of L3), a bearer directly connected by an RRC layer, and a connectionless bearer (as shown in fig. 2), and may specifically include:

SDAP QoS flow (per IP flow): the input of the SDAP layer is IP flow, and the SDAP layer is processed according to the unit of the IP flow (namely per IP flow), and the output of the SDAP layer is QoS flow;

SDAP QoS flow (per SDU flow): the input to the SDAP layer is IP flow, and the SDAP layer is processed according to each IP packet (namely SDAP SDU) as a unit (namely per SDU flow) to form QoS flow, namely the output of the SDAP layer is QoS flow;

connectionless bearers (english may be expressed as no-bearer link);

l3UP QoS flow (per IP flow): the input of the L3UP layer is IP flow, the L3UP layer is processed according to the IP flow as a unit (namely per IP flow), and the output of the L3UP layer is QoS flow;

l3UP QoS flow (per SDU flow): the input of the L3UP layer is IP flow, and the processing is carried out on the L3UP layer according to each IP packet (SDAP SDU) as a unit (i.e. per SDU flow) to form QoS flow, i.e. the output of the L3UP layer is QoS flow;

RRC Bearer。

in other words, the novel bearer comprises at least one of:

the MAC layer is directly connected with the SDAP layer;

the MAC layer is directly connected with the L3UP layer;

the MAC layer is directly connected with the RRC layer;

the MAC layer and the SDAP layer bear no connection;

the MAC layer and the L3UP layer bear no connection;

the MAC layer has no bearer connected to the RRC layer.

In the embodiment of the application, the format of the existing MAC PDU is expanded; specifically, the existing MAC PDU format, including the MAC SDU and the overall format of the MAC PDU, is not changed, and only the MAC PDU subheader is changed, i.e., a new T Field (i.e., a Type Field) is added (an R Field in the existing MAC PDU subheader is used as a T Field) and an extended bearer identification Field.

0	LCID, containing LC, MAC CE [ existing definitions]
		1	EBID comprising the above 6 kinds of newly added bearers

TABLE 1

Taking table 1 as an example, when the value of the T field is 0, the bearer identification field is LCID. Different values of LCID identify different LCs and different MAC CEs, respectively. Accordingly, when the value of the T field is 1, the bearer identification field is a new bearer identification (e.g., an extended bearer ID (EBID, extensive Bearer ID)).

For example, as shown in fig. 4a, 4b, and 4c, the EBID may be 6bits long, so that 64 new bearers can be identified, and the identified EB IDs are 0 to 63. In practical applications, 64 new bearers may be defined as shown in table 2.

EB ID	EB Type
		0～x	SDAP QoS flow(per IP flow)
x+1～y	SDAP QoS flow(per SDU flow)
		y+1～z	no-bearer link
z+1～m	L3UP QoS flow(per IP flow)
		m+1～n	L3UP QoS flow(per SDU)
n+1～63	RRC Bearer

TABLE 2

In practical application, the number of new bearers of each type may be defined according to requirements, for example, when only one RRC Bearer is needed, the EB ID may be set to 63 for simplicity of implementation.

As can be seen from the above description, in the embodiment of the present application, a new identification bit is defined in the MAC PDU to indicate a new bearer, and according to the indication bit, the extension of the bearer ID field is implemented.

The MAC layer should have a correspondence with the bearer identification and EB ID of the upper layer so that the MAC layer can identify the bearer.

Based on this, in an embodiment, when the first information indicates that the type of the MAC PDU bearer is a new bearer, i.e. in case the first information indicates that the type of the MAC PDU bearer is a new bearer,

the transmitting terminal equipment receives a data packet sent by an upper layer directly connected with the MAC layer;

and distributing a novel bearing identifier for the bearing connected with the upper layer by the MAC layer.

After the EB ID is allocated and recorded, the transmitting end device utilizes the data packet and the EB ID to construct the MAC PDU.

In practical application, the MAC layer may configure a correspondence between a bearer identifier directly connected to an upper layer by using higher layer signaling, so as to allocate a new bearer identifier to a bearer connected to the upper layer by using the MAC layer based on the correspondence. It can be appreciated that in an embodiment, a new bearer identifier is allocated to a bearer connected by the MAC layer and the upper layer by using a correspondence between a bearer identifier directly connected by the MAC layer and the upper layer and the new bearer identifier.

Wherein, in an embodiment, the method may further comprise:

and obtaining the corresponding relation.

Here, in actual application, when the transmitting end device includes a network device and the receiving end device includes a terminal, the transmitting end device needs to transmit the correspondence to the receiving end device so that the receiving end device can obtain the correspondence. Correspondingly, when the transmitting end equipment comprises a terminal; the obtaining the correspondence relationship includes: and receiving the corresponding relation sent by the sending terminal equipment. That is, the transmitting-end device and the receiving-end device retain the correspondence.

The network device may send (i.e. configure) the corresponding relationship to the terminal through RRC signaling or the like, which is not limited in the embodiment of the present application. In addition, the network device determines the correspondence according to the need, which is not limited in the embodiment of the present application. The signaling configuration and the carrying along of the path are combined, so that the cost is greatly reduced (router identification such as ID is not required to be carried in PDU) on the basis of ensuring flexibility.

In practical application, in the MAC layer, an EB ID can be dynamically selected according to the requirement; specifically, when data of an upper layer bearer is received, whether an EB ID has been allocated to the upper layer bearer is determined according to the upper layer bearer ID, if so, the allocated EB ID is directly used, and if not, an available EB ID is allocated (for example, an available EB ID is selected according to QoS) in a segment of a corresponding bearer type based on table 2, and the corresponding relationship between the upper layer bearer and the EB ID is obtained by recording.

Correspondingly, the embodiment of the application also provides a data transmission method, which is applied to the receiving terminal equipment, as shown in fig. 5, and comprises the following steps:

step 501: receiving a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the second information indicates an identity of the new type bearer when the first information indicates that the type of the MAC PDU bearer is a new type bearer;

step 502: and determining an upper layer of the MAC PDU which is directly connected with the MAC layer, and transmitting the MAC SDU corresponding to the MAC PDU to the upper layer.

In an embodiment, in step 502, in case the first information indicates that the type of the MAC PDU bearer is a new bearer,

determining an upper layer of the MAC PDU directly connected to a MAC layer;

and transmitting the MAC SDU corresponding to the MAC PDU to the upper layer.

Wherein, in one embodiment, the method comprises,

and determining an upper layer of the MAC PDU directly connected with the MAC layer by utilizing the corresponding relation between the bearing identifier directly connected with the upper layer of the MAC layer and the novel bearing identifier and the second information.

Here, in an embodiment, the method may further include:

and obtaining the corresponding relation.

Wherein, in an embodiment, the sending end device comprises a network device; the obtaining the correspondence relationship includes:

and receiving the corresponding relation sent by the sending terminal equipment.

In an embodiment, the transmitting end device includes a terminal; the obtaining the correspondence relationship includes:

and receiving the corresponding relation sent by the sending terminal equipment.

At the MAC layer, an upper layer directly connected to the MAC layer may also be dynamically determined for the MAC PDU.

Specifically, at the MAC layer, after receiving the MAC PDU from the physical layer, the MAC PDU is parsed, the T field is obtained from the subheader, and the type of the bearer is determined to be LC or a new bearer according to the value of the T field, so that it can be determined that the bearer identification field is LCID or EB ID. If the type is EB ID, an upper layer directly connected with the MAC layer may be determined for the MAC PDU based on the correspondence, i.e. according to EB ID, table 2 is queried to find the type of the bearer, and then sent to the upper layer.

If the ID is the EB ID dynamically allocated by the MAC of the transmitting terminal equipment, judging whether the bearer IDs of the MAC layer and the upper layer are allocated or not according to the EB ID in the MAC layer, and if the bearer IDs are allocated, transmitting the data packet to the upper layer according to the bearer IDs; if not, a bearer ID of an upper layer is dynamically selected and recorded (to determine the upper layer for subsequent MAC PDUs based on the EB ID) and then sent to the upper layer.

From the above description, it can be seen that, according to the scheme provided by the embodiment of the present application, the PDU constructed by the MAC layer has a routing function, and can flexibly select a path according to needs, without any influence on the physical layer, so as to realize an influence on the physical layer 0, and meanwhile, because the MAC layer can flexibly select a path according to needs, the present application has the following advantages:

1. a protocol stack scheme is set up for a Service Based Architecture (SBA) Radio Access Network (RAN);

2. the method lays a foundation for the definition of wireless slices, namely, different slices serving the same terminal can have the same or different protocol stack functions through the protocol stack scheme provided by the embodiment of the application;

3. the method lays a foundation for customizing AS layer protocol stack functions according to different service demands in a 6G system;

4. a protocol stack functional solution is provided for the interaction of data required in the configuration of an Artificial Intelligence (AI) model or algorithm of an internal AI and model training.

According to the data transmission method provided by the embodiment of the application, the sending end equipment sends the MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the second information indicates an identity of the new type bearer when the first information indicates that the type of the MAC PDU bearer is a new type bearer; and the receiving end equipment receives the MAC PDU, the scheme provided by the embodiment of the application defines new information in the existing MAC PDU to indicate new bearing, and according to the indication, realizes the expansion of the bearing ID domain, namely, the indication of different types of bearing is carried in the existing MAC PDU, thereby realizing the expansion based on the existing PAC PDU, and having simple realization and small influence on the protocol.

In order to implement the method at the transmitting end device side in the embodiment of the present application, the embodiment of the present application further provides a data transmission device, which is disposed on the transmitting end device, as shown in fig. 6, and the device includes:

a first transmitting unit 601, configured to transmit a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

In one embodiment, as shown in fig. 6, the apparatus may further include:

a constructing unit 602, configured to construct the MAC PDU.

Wherein, in an embodiment, the building unit 602 is configured to:

receiving a data packet sent by an upper layer directly connected with the MAC layer;

distributing a novel bearing identifier for the bearing connected with the upper layer by the MAC layer;

and constructing the MAC PDU.

Wherein, in an embodiment, the building unit 602 is configured to: and distributing the novel bearing identifier for the bearing connected with the upper layer by utilizing the corresponding relation between the bearing identifier directly connected with the upper layer by the MAC layer and the novel bearing identifier.

Here, in an embodiment, the apparatus may further include:

and the first acquisition unit is used for acquiring the corresponding relation.

In an embodiment, the transmitting end device includes a terminal, and the first obtaining unit is configured to receive the correspondence sent by the receiving end device, where the receiving end device includes a network device.

In an embodiment, the sender device includes a network device; the first sending unit 601 is further configured to send the correspondence to a receiving end device, where the receiving end device includes a terminal.

In practical application, the first sending unit 601 may be implemented by a communication interface in the data transmission device, the building unit 602 may be implemented by a processor in the data transmission device, and the first obtaining unit may be implemented by a processor in the data transmission device in combination with the communication interface.

In order to implement the method at the receiving end device side in the embodiment of the present application, the embodiment of the present application further provides a data transmission device, which is disposed on the receiving end device, as shown in fig. 7, and the device includes:

a receiving unit 701, configured to receive a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

In one embodiment, as shown in fig. 7, the apparatus may further include:

and the parsing unit 702 is configured to determine an upper layer directly connected to a MAC layer of the MAC PDU, and send a MAC SDU corresponding to the MAC PDU to the upper layer.

Wherein, in an embodiment, the parsing unit 702 is configured to:

determining an upper layer of the MAC PDU directly connected with a MAC layer under the condition that the first information indicates that the type of the MAC PDU bearing is a novel bearing; the method comprises the steps of,

and transmitting the MAC SDU corresponding to the MAC PDU to the upper layer.

Wherein, in an embodiment, the parsing unit, 702 is configured to:

and determining an upper layer of the MAC PDU directly connected with the MAC layer by utilizing the corresponding relation between the bearing identifier directly connected with the upper layer of the MAC layer and the novel bearing identifier and the second information.

Here, in an embodiment, the apparatus may further include:

and the second acquisition unit is used for acquiring the corresponding relation.

In an embodiment, the sender device includes a network device; the second obtaining unit is configured to receive the correspondence sent by the sending end device.

In an embodiment, the transmitting end device includes a terminal, and the apparatus may further include a second transmitting unit, configured to transmit the correspondence relationship to the transmitting end device, and the receiving end device includes a network device.

In practical applications, the receiving unit 701 and the second sending unit may be implemented by a communication interface in the data transmission device, the parsing unit 702 may be implemented by a processor in the data transmission device, and the second obtaining unit may be implemented by a processor in the data transmission device in combination with the communication interface.

It should be noted that: in the data 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 data transmission device and the data transmission method provided in the foregoing embodiments belong to the same concept, and specific implementation processes of the data transmission device and the data transmission method are detailed in the method embodiments and are not repeated herein.

Based on the hardware implementation of the program modules, and in order to implement the method at the transmitting end device side in the embodiment of the present application, the embodiment of the present application further provides a transmitting end device, as shown in fig. 8, where the transmitting end device 800 includes:

a first communication interface 801, capable of performing information interaction with a receiving-end device;

The first processor 802 is connected to the first communication interface 801, so as to implement information interaction with the receiving end device, and is configured to execute, when running a computer program, a method provided by one or more technical schemes on the transmitting end device side;

a first memory 803, said computer program being stored on said first memory 803.

Specifically, the first communication interface is configured to send a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

Wherein in an embodiment, the first processor 802 is configured to construct the MAC PDU.

In an embodiment, the first processor 802 is configured to:

receiving a data packet sent by an upper layer directly connected with the MAC layer;

distributing a novel bearing identifier for the bearing connected with the upper layer by the MAC layer;

and constructing the MAC PDU.

In an embodiment, the first processor 802 is configured to:

and distributing the novel bearing identifier for the bearing connected with the upper layer by utilizing the corresponding relation between the bearing identifier directly connected with the upper layer by the MAC layer and the novel bearing identifier.

In an embodiment, the first processor 802 is configured to obtain the correspondence.

In an embodiment, the transmitting device 800 includes a terminal, and the first processor 802 is configured to receive, through the first communication interface 801, the correspondence sent by a receiving device, where the receiving device includes a network device.

In one embodiment, the sender device 800 includes a network device; the first communication interface 801 is further configured to send the correspondence to a receiving end device, where the receiving end device includes a terminal.

It should be noted that: the specific processing of the first processor 802 and the first communication interface 801 can be understood with reference to the above-described methods.

Of course, in actual practice, the various components in the sender device 800 are coupled together by a bus system 804. It is to be appreciated that the bus system 804 is employed to enable connected communications between these components. The bus system 804 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as bus system 804 in fig. 8.

The first memory 803 in the embodiment of the present application is used to store various types of data to support the operation of the transmitting-end apparatus 800. Examples of such data include: any computer program for operation on the sender device 800.

The method disclosed in the above embodiment of the present application may be applied to the first processor 802, or implemented by the first processor 802. The first processor 802 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method described above may be performed by integrated logic circuits of hardware or instructions in software form in the first processor 802. The first processor 802 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 802 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. 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 application 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 803, said first processor 802 reading the information in the first memory 803, in combination with its hardware, performing the steps of the aforementioned method.

In an exemplary embodiment, the sender device 800 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 at the receiving end device side in the embodiment of the present application, the embodiment of the present application further provides a receiving end device, as shown in fig. 9, where the receiving end device 900 includes:

the second communication interface 901 is capable of performing information interaction with the transmitting end device;

the second processor 902 is connected with the second communication interface 901 to realize information interaction with the sending end device, and is used for executing the method provided by one or more technical schemes on the receiving end device side when running a computer program;

a second memory 903, said computer program being stored on said second memory 903.

Specifically, the second communication interface 901 is configured to receive a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is LC or is a new type bearer, where the second information indicates an identity of LC when the first information indicates that the type of the MAC PDU bearer is LC, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identity of the new type bearer.

In one embodiment, the second processor 902 is configured to determine an upper layer of the MAC PDU directly connected to a MAC layer, and send a MAC SDU corresponding to the MAC PDU to the upper layer.

Wherein, in an embodiment, the second processor 902 is configured to:

determining an upper layer of the MAC PDU directly connected with a MAC layer under the condition that the first information indicates that the type of the MAC PDU bearing is a novel bearing; the method comprises the steps of,

and transmitting the MAC SDU corresponding to the MAC PDU to the upper layer.

Here, in an embodiment, the second processor 902 is configured to:

and determining an upper layer of the MAC PDU directly connected with the MAC layer by utilizing the corresponding relation between the bearing identifier directly connected with the upper layer of the MAC layer and the novel bearing identifier and the second information.

In an embodiment, the second processor 902 is further configured to obtain the correspondence.

In an embodiment, the sender device includes a network device; the second processor 902 is configured to receive, through the second communication interface 901, the correspondence relationship sent by the sending end device.

In an embodiment, the sending end device includes a terminal, the second communication interface 901 is further configured to send the correspondence to the sending end device, and the receiving end device includes a network device.

It should be noted that: the specific processing procedure of the second communication interface 901 and the second processor 902 can be understood with reference to the above-described method.

Of course, in actual practice, the various components in the sink device 900 are coupled together by a bus system 904. It is appreciated that the bus system 904 is used to facilitate connected communications between these components. The bus system 904 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration, the various buses are labeled as bus system 904 in fig. 9.

The second memory 903 in the embodiment of the present application is used to store various types of data to support the operation of the receiving device 900. Examples of such data include: any computer program for operation on the receiving end device 900.

The method disclosed in the above embodiment of the present application may be applied to the second processor 902 or implemented by the second processor 902. The second processor 902 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method may be implemented by an integrated logic circuit of hardware or an instruction in software form in the second processor 902. The second processor 902 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 902 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. 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 application 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 903, said second processor 902 reading the information in the second memory 903, in combination with its hardware performing the steps of the method described above.

In an exemplary embodiment, the receiver-side device 900 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.

It is to be understood that the memories (the first memory 803 and the second memory 903) of the embodiment of the present application may be volatile memory or nonvolatile memory, 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 application is intended to comprise, without being limited to, these and any other suitable types of memory.

In order to implement the method provided by the embodiment of the present application, the embodiment of the present application further provides a data transmission system, as shown in fig. 10, where the system includes: sender device 1001 and receiver device 1002.

Here, it should be noted that: specific processing procedures of the transmitting end device 1001 and the receiving end device 1002 are described in detail above, and will not be described herein.

In an exemplary embodiment, the present application further provides a storage medium, i.e. a computer storage medium, specifically a computer readable storage medium, for example, including a first memory 803 storing a computer program, where the computer program may be executed by the first processor 802 of the sender device 800 to complete the steps of the method on the sender device side. For example, the second memory 903 may store a computer program that may be executed by the second processor 902 of the receiving device 900 to perform the steps of the method on the receiving device side. 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 application may be arbitrarily combined without any collision.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the present application.

Claims (23)

1. A data transmission method, applied to a transmitting device, comprising:

transmitting a Media Access Control (MAC) Protocol Data Unit (PDU); the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is a logical channel or is a new type bearer, where the second information indicates an identifier of the logical channel when the first information indicates that the type of the MAC PDU bearer is a logical channel, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identifier of the new type bearer.

2. The method of claim 1, wherein the sub-header of the MAC PDU contains the first information and the second information.

3. The method of claim 1, wherein the new bearer comprises at least one of:

the MAC layer is directly connected with the SDAP layer of the service data adaptation protocol;

The MAC layer is directly connected with the layer 3 for realizing the function of the user plane;

the MAC layer is directly connected with the Radio Resource Control (RRC) layer;

the MAC layer and the SDAP layer bear no connection;

the MAC layer and the layer 3 are used for realizing the bearing of the layer connectionless of the user plane function;

the MAC layer has no bearer connected to the RRC layer.

4. A method according to any of claims 1 to 3, wherein in case the first information indicates that the type of the MAC PDU bearer is a new bearer, the method further comprises:

receiving a data packet sent by an upper layer directly connected with the MAC layer;

distributing a novel bearing identifier for the bearing connected with the upper layer by the MAC layer;

and constructing the MAC PDU.

5. The method of claim 4, wherein the step of determining the position of the first electrode is performed,

and distributing the novel bearing identifier for the bearing connected with the upper layer by utilizing the corresponding relation between the bearing identifier directly connected with the upper layer by the MAC layer and the novel bearing identifier.

6. The method of claim 5, wherein the method further comprises:

and obtaining the corresponding relation.

7. The method of claim 6, wherein the sender device comprises a terminal that receives the correspondence sent by a receiver device, and wherein the receiver device comprises a network device.

8. The method of claim 5, wherein the sender device comprises a network device; the method further comprises the steps of:

and sending the corresponding relation to receiving end equipment, wherein the receiving end equipment comprises a terminal.

9. A data transmission method, applied to a receiving end device, comprising:

receiving a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is a logical channel or is a new type bearer, where the second information indicates an identifier of the logical channel when the first information indicates that the type of the MAC PDU bearer is a logical channel, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identifier of the new type bearer.

10. The method of claim 9, wherein the sub-header of the MAC PDU contains the first information and the second information.

11. The method of claim 9, wherein the new bearer comprises at least one of:

the MAC layer is directly connected with the SDAP layer;

the MAC layer is directly connected with the layer 3 for realizing the function of the user plane;

The MAC layer is directly connected with the RRC layer;

the MAC layer and the SDAP layer bear no connection;

the MAC layer and the layer 3 are used for realizing the bearing of the layer connectionless of the user plane function;

the MAC layer has no bearer connected to the RRC layer.

12. The method according to any of claims 9 to 11, wherein in case the first information indicates that the type of the MAC PDU bearer is a new bearer, the method further comprises:

determining an upper layer of the MAC PDU directly connected to a MAC layer;

and transmitting the MAC service data unit SDU corresponding to the MAC PDU to the upper layer.

13. The method of claim 12, wherein the step of determining the position of the probe is performed,

and determining an upper layer of the MAC PDU directly connected with the MAC layer by utilizing the corresponding relation between the bearing identifier directly connected with the upper layer of the MAC layer and the novel bearing identifier and the second information.

14. The method of claim 13, wherein the method further comprises:

and obtaining the corresponding relation.

15. The method of claim 14, wherein the sender device comprises a network device; the obtaining the correspondence relationship includes:

and receiving the corresponding relation sent by the sending terminal equipment.

16. The method of claim 14, wherein the sender device comprises a terminal, the method further comprising:

and sending the corresponding relation to the sending end equipment, wherein the receiving end equipment comprises network equipment.

17. A data transmission apparatus, comprising:

a first transmitting unit configured to transmit a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is a logical channel or is a new type bearer, where the second information indicates an identifier of the logical channel when the first information indicates that the type of the MAC PDU bearer is a logical channel, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identifier of the new type bearer.

18. A data transmission apparatus, comprising:

a receiving unit for receiving the MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is a logical channel or is a new type bearer, where the second information indicates an identifier of the logical channel when the first information indicates that the type of the MAC PDU bearer is a logical channel, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identifier of the new type bearer.

19. A transmitting-end apparatus, characterized by comprising: a first processor and a first communication interface; wherein,,

the first communication interface is used for sending the MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is a logical channel or is a new type bearer, where the second information indicates an identifier of the logical channel when the first information indicates that the type of the MAC PDU bearer is a logical channel, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identifier of the new type bearer.

20. A receiving-end apparatus, characterized by comprising: a second processor and a second communication interface; wherein,,

the second communication interface is configured to receive a MAC PDU; the MAC PDU at least includes first information and second information, where the first information indicates that a type of the MAC PDU bearer is a logical channel or is a new type bearer, where the second information indicates an identifier of the logical channel when the first information indicates that the type of the MAC PDU bearer is a logical channel, and where the first information indicates that the type of the MAC PDU bearer is a new type bearer, the second information indicates an identifier of the new type bearer.

21. A transmitting-end apparatus, characterized by 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.

22. A receiving-end apparatus, characterized by 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.

23. 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.