CN117119411A - Data transmission method, device and storage medium - Google Patents

Data transmission method, device and storage medium Download PDF

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Publication number
CN117119411A
CN117119411A CN202210528202.8A CN202210528202A CN117119411A CN 117119411 A CN117119411 A CN 117119411A CN 202210528202 A CN202210528202 A CN 202210528202A CN 117119411 A CN117119411 A CN 117119411A
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China
Prior art keywords
qos
function
data packet
public
qos flow
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CN202210528202.8A
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Chinese (zh)
Inventor
孙军帅
李娜
赵芸
王莹莹
刘光毅
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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Application filed by China Mobile Communications Group Co Ltd, China Mobile Communications Ltd Research Institute filed Critical China Mobile Communications Group Co Ltd
Priority to CN202210528202.8A priority Critical patent/CN117119411A/en
Priority to PCT/CN2023/094559 priority patent/WO2023221984A1/en
Publication of CN117119411A publication Critical patent/CN117119411A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/50—Service provisioning or reconfiguring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Abstract

A data transmission method, device and storage medium, the method includes: the first function of the SDAP layer maps a first data packet received from a first QoS flow to a second function of the first public RB and sends the first data packet to the MAC layer according to the QoS guarantee requirement corresponding to the RB and the QoS requirement of the first QoS flow; and/or the first function of the SDAP layer receives a second data packet sent by the second function of the MAC layer from the second public RB, and maps the second data packet to a second QoS flow of the first terminal for sending according to the terminal identifier of the first terminal and the QoS flow identifier of the second QoS flow carried by the second data packet; at least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission. And through the public RB between the SDAP layer and the MAC layer, data transmission for service purpose is realized between the SDAP layer and the MAC layer, so that a flexible function under a simple network is realized.

Description

Data transmission method, device and storage medium
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a data transmission method, a data transmission device, and a storage medium.
Background
The design goals of the next generation mobile communication Network (Lite Network) and flexible Network (Soft, resilient Network) require Service Oriented (SO) protocol stack functions to be designed.
The function of the prior art service data adaptation protocol (Service Data Adaptation Protocol, SDAP) protocol is shown in fig. 1, the SDAP being responsible for mapping and de-mapping of QoS flows (QoS flows) and data radio bearers (Data Radio Bearer, DRBs), and optionally a reflection mapping function (Reflective QoS flow to DRB mapping).
In the prior art, each protocol layer strictly transmits data according to the upper and lower layer constraint relation of L3/L2/L1, and is configured by taking UE as a unit. Each Radio Bearer (RB) belongs to and only belongs to one UE. The RB is a bearer between two protocol layers, an SDAP and a packet data convergence protocol (Packet Data Convergence Protocol, PDCP), and the SDAP and a medium access control (Media Access Control, MAC) layer cannot be directly connected, specifically, a 5G protocol stack scheme as shown in fig. 2 and 3.
In 6G, with the increase of the information types to be transmitted (6G networks are smart in-growth networks, and measurement information needs to be generated according to their own operation), RBs meeting the transmission needs are established for wireless QoS requirements. Meanwhile, in order to eliminate the RB switching process when the UE moves, the RB needs to be redefined, which requires that the protocol stack in 6G has flexibility of function on-demand selection, unified redundancy overhead of protocol data unit (Protocol Data Unit, PDU) format, no connection or light connection between protocol layers.
The function of the SDAP protocol sublayer in the current 5G protocol stack is also a connection-oriented function, that is, after the UE accesses the base station, the SDAP protocol function of the user is established through radio resource control (Radio Resource Control, RRC) signaling (the corresponding SDAP function is configured through the establishment of RBs in the RRC signaling), and RBs belonging to the UE, where each RB belongs to and only belongs to one UE. When the UE moves to handover, this Connection-oriented (RRC Connection) manner cannot meet the flexibility requirement of multi-scenario multi-service.
Disclosure of Invention
At least one embodiment of the present application provides a data transmission method, apparatus, and storage medium capable of implementing data transmission for service purposes between an SDAP layer and a MAC layer through an RB between the SDAP layer and the MAC layer.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, an embodiment of the present application provides a data transmission method, including:
a first function of a service data adaptation protocol SDAP layer maps a first data packet received from a first QoS flow to a first public RB and sends the first data packet to a second function of a media access control MAC layer according to a QoS guarantee requirement corresponding to a radio bearer RB and a QoS requirement of the first QoS flow;
And/or the number of the groups of groups,
the first function of the SDAP layer receives a second data packet sent by a second function of the MAC layer from a second public RB, and maps the second data packet to a second QoS flow of the first terminal for sending according to a terminal identifier of the first terminal and a QoS flow identifier of the second QoS flow carried by the second data packet;
at least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission.
Optionally, the second function of mapping the first data packet received from the first QoS flow onto the first common RB according to the QoS guarantee requirement corresponding to the radio bearer RB and the QoS requirement of the first QoS flow, and sending the first data packet to the medium access control MAC layer includes:
the first function of the SDAP layer determines a first public RB matched with the QoS requirement of a first QoS flow according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the first QoS flow;
and transmitting the first data packet received from the first QoS flow to the second function of the MAC layer through the first public RB.
Optionally, the second function of mapping the first data packet received from the first QoS flow onto the first common RB according to the QoS guarantee requirement corresponding to the radio bearer RB and the QoS requirement of the first QoS flow, and sending the first data packet to the medium access control MAC layer includes:
The first function of the SDAP layer receives a first data packet from the first QoS flow and acquires the QoS requirement of the first data packet;
determining a first public RB matched with the QoS requirement of a first data packet according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the first data packet;
and sending the first data packet to a second function of the MAC layer through the first public RB.
Optionally, the identity ID of the public RB is: and indexing the QoS guarantee requirement corresponding to the public RB.
Optionally, the first function of the SDAP layer and the second function of the MAC layer are directly connected through the common RB.
Optionally, a terminal side public RB established between the first function of the SDAP layer of the terminal and the second function of the MAC layer, and a network side public RB having a QoS guarantee requirement consistent with the terminal side public RB established between the first function of the SDAP layer of the network device and the second function of the MAC layer.
Optionally, any common RB established between the first function of the SDAP layer and the second function of the MAC layer of the network device is used to transmit data packets of at least one QoS flow, where the at least one QoS flow is a QoS flow of one or more terminals, and a QoS requirement of the at least one QoS flow matches a QoS guarantee requirement of the any common RB.
Optionally, the common RB established between the first function of the SDAP layer and the second function of the MAC layer is a connection-oriented bearer or a connectionless bearer, where the connectionless RB refers to that there is no connection entity between the first function of the SDAP layer and the second function of the MAC layer.
Optionally, the transmission direction of the common RB established between the first function of the SDAP layer and the second function of the MAC layer includes unidirectional transmission or bidirectional transmission.
Optionally, the data packet sent from the first function of the SDAP layer to the second function of the MAC layer carries at least one of the following information: the RB identification of the public RB mapped by the data packet, the QoS flow identification of the QoS flow to which the data packet belongs, the terminal identification corresponding to the data packet and the SDAP PDU;
the data packet received by the first function of the SDAP layer from the RB carries at least one of the following information: the RB identifier of the public RB mapped by the data packet, the QoS flow identifier of the QoS flow to which the data packet belongs, the terminal identifier corresponding to the data packet and the SDAP PDU.
In a second aspect, an embodiment of the present application provides a data transmission method, including:
the second function of the MAC layer receives a first data packet sent by the first function of the SDAP layer from a first public RB, determines the QoS requirement of the first data packet or a first QoS stream according to the QoS guarantee requirements corresponding to the first public RB and the public RB, and performs scheduling of the data packet or scheduling of the QoS stream according to the QoS requirement of the first data packet, wherein the first QoS stream is the QoS stream to which the first data packet belongs;
And/or the number of the groups of groups,
the second function of the MAC layer determines a second public RB matched with the QoS requirement of a second data packet according to the QoS requirement corresponding to each public RB and the QoS requirement of the second data packet, and maps the second data packet to the first function of the second public RB and sends the second data packet to the SDAP layer;
at least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission.
Optionally, before determining the second common RB that matches the QoS requirement of the second packet, the method further includes:
and the second function of the MAC layer determines the QoS requirement of the second data packet according to the QoS rule.
Optionally, the identity ID of the public RB is: and indexing the QoS guarantee requirement corresponding to the public RB.
Optionally, the second function of the MAC layer and the first function of the SDAP layer are directly connected through the common RB.
Optionally, a terminal side public RB established between the first function of the SDAP layer of the terminal and the second function of the MAC layer, and a network side public RB having a QoS guarantee requirement consistent with the terminal side public RB established between the first function of the SDAP layer of the network device and the second function of the MAC layer.
Optionally, any common RB established between the second function of the MAC layer and the first function of the SDAP layer of the network device is used to transmit data packets of at least one QoS flow, where the at least one QoS flow is a QoS flow of one or more terminals, and a QoS requirement of the at least one QoS flow matches a QoS guarantee requirement of the any common RB.
Optionally, the common RB established between the second function of the MAC layer and the first function of the SDAP layer is a connection-oriented bearer or a connectionless bearer, where the connectionless RB refers to that there is no connection entity between the first function of the SDAP layer and the second function of the MAC layer.
Optionally, the transmission direction of the common RB established between the second function of the MAC layer and the first function of the SDAP layer includes unidirectional transmission or bidirectional transmission.
Optionally, the data packet received by the second function of the MAC layer from the RB carries at least one of the following information: the RB identification of the public RB mapped by the data packet, the QoS flow identification of the QoS flow to which the data packet belongs, the terminal identification corresponding to the data packet and the SDAP PDU;
the data packet sent by the second function of the MAC layer to the first function of the SDAP layer carries at least one of the following information: the RB identifier of the public RB mapped by the data packet, the QoS flow identifier of the QoS flow to which the data packet belongs, the terminal identifier corresponding to the data packet and the SDAP PDU.
In a third aspect, an embodiment of the present application provides a data transmission apparatus, applied to a first function of an SDAP layer, including: a transceiver and a processor:
the transceiver is used for receiving and transmitting data under the control of the processor;
the processor is used for mapping a first data packet received from a first QoS flow to a first public RB and sending the first data packet to a second function of a MAC layer according to a QoS guarantee requirement corresponding to the RB and a QoS requirement of the first QoS flow; and/or receiving a second data packet sent by a second function of the MAC layer from a second public RB, and mapping the second data packet to a second QoS flow of the first terminal for sending according to a terminal identifier of the first terminal and a QoS flow identifier of the second QoS flow carried by the second data packet;
at least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission.
In a fourth aspect, an embodiment of the present application provides a data transmission apparatus, applied to a first function of an SDAP layer, including: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method as described in the first aspect.
In a fifth aspect, an embodiment of the present application provides a data transmission apparatus, applied to a second function of a MAC layer, including: a transceiver and a processor:
the transceiver is used for receiving and transmitting data under the control of the processor;
the processor is configured to receive a first data packet sent by a first function of an SDAP layer from a first public RB, determine a QoS requirement of the first data packet or a first QoS flow according to QoS guarantee requirements corresponding to the first public RB and the public RB, and schedule the data packet or schedule a QoS flow according to the QoS requirement of the first data packet, where the first QoS flow is a QoS flow to which the first data packet belongs; and/or, determining a second public RB matched with the QoS requirement of the second data packet according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the second data packet, and mapping the second data packet onto the second public RB and sending the second data packet to the first function of the SDAP layer;
at least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission.
In a sixth aspect, an embodiment of the present application provides a data transmission apparatus, applied to a second function of a MAC layer, including: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method as described in the second aspect.
In a seventh aspect, embodiments of the present application provide a computer readable storage medium having stored thereon a program which, when executed by a processor, implements the steps of the method as described above.
Compared with the prior art, the data transmission method, the device and the storage medium provided by the embodiment of the application realize data transmission for service purposes between the SDAP layer and the MAC layer through the public RB between the SDAP layer and the MAC layer, thereby realizing the flexible function under the reduced network. In addition, the embodiment of the application can also realize flexible selection of protocol functions according to requirements, reduce RRC signaling overhead and realize a protocol stack scheme of a service-oriented RAN. In addition, as the public RB is not special for the UE any more, the embodiment of the application can also avoid the RB switching process when the UE moves.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIGS. 1-3 are schematic diagrams of prior art 5G protocol architectures;
fig. 4 is a schematic diagram of an application scenario according to an embodiment of the present application;
fig. 5 is a schematic flow chart of a data transmission method according to an embodiment of the application;
fig. 6 is a schematic flow chart of a data transmission method according to an embodiment of the application;
fig. 7 is a schematic structural diagram of a data transmission device according to an embodiment of the application;
fig. 8 is a schematic structural diagram of a data transmission device according to another embodiment of the present application;
fig. 9 is a schematic structural diagram of a data transmission device according to another embodiment of the present application;
fig. 10 is a schematic structural diagram of a data transmission device according to another embodiment of the present application;
fig. 11 is a schematic structural diagram of a data transmission device according to another embodiment of the present application;
fig. 12 is a schematic structural diagram of a data transmission device according to another embodiment of the present application.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. "and/or" in the specification and claims means at least one of the connected objects.
The following description provides examples and does not limit the scope, applicability, or configuration as set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
As shown in fig. 2-3, a conventional RB is bound to a UE, carrying one or more QoS flows for the UE. The embodiment of the application introduces a new RB type besides the traditional RB type. The RB according to the embodiment of the present application is described below.
The embodiment of the application provides a multi-user DRB scheme facing wireless QoS. As shown in fig. 4, the connection between the SDAP and MAC layers is made through the new type RB (DRB with QoS). After using the new RB, the SDAP can support mapping and demapping functions of multiple QoS flows of multiple users onto different RBs. In fig. 4, qoS flows are managed in units of UEs and then mapped to different RBs.
The novel RB type provided by the embodiment of the application has one or more of the following characteristics:
1) At least one common RB is established between the SDAP layer and the MAC layer of the network device or terminal, which is shared by at least one terminal, instead of an RB dedicated to a certain terminal, and thus, the RB of the embodiment of the present application may also be referred to as a common RB. Each common RB corresponds to a QoS guarantee requirement for data transmission, and the common RBs are used for transmitting data whose QoS requirements match the QoS guarantee requirement corresponding to the common RB.
The common RB can transmit data of any one terminal (UE), not exclusive to any one terminal. That is, any common RB established between the SDAP layer and the MAC layer of the network device is used to transmit data packets of at least one QoS flow, which is a QoS flow of one or more terminals, and the QoS requirement of the at least one QoS flow matches the QoS guarantee requirement of the any common RB. For a terminal, any public RB established between the SDAP layer and the MAC layer of the terminal is also not specifically established for the terminal, but is established separately for various QoS guarantee requirements, even if a public RB on a certain terminal side is used for transmitting data of the terminal.
The QoS guarantee requirements in the embodiments of the present application may specifically refer to wireless QoS guarantee requirements, that is, qoS requirements to be satisfied when a wireless transport layer (Transport Network Layer, TNL) layer is transmitted. The embodiment of the application can define the public RB towards the wireless QoS guarantee requirement, namely, the public RB is established by taking the wireless QoS guarantee requirement as a unit. In this way, the index of different kinds of QoS guarantee requirements can be regarded as the Identification (ID) of the common RB. That is, the ID of the common RB is: index of QoS guarantee requirement corresponding to the common RB.
In the embodiment of the application, different kinds of QoS guarantee requirements can be defined as different QoS classes (wireless QoS classes), so that the index of the QoS class can be used as the ID of a public RB, and each public RB represents one kind of QoS guarantee requirement (or one kind of wireless QoS class) in data transmission between an SDAP and a MAC.
In the embodiment of the application, the QoS guarantee requirement of the data transmission corresponding to each public RB refers to the QoS index of the wireless transmission which can be met by the public RB. Specifically, the QoS requirements for each common RB may be different, that is, different common RBs correspond to different QoS requirements. Of course, in the embodiment of the present application, qoS guarantees corresponding to different public RBs may be the same, which is not particularly limited in the embodiment of the present application.
2) The first function of the SDAP layer and the second function of the MAC layer are directly connected through a common RB.
3) And the uplink or the downlink of the terminal and the network side automatically define the public RB according to the consistent QoS guarantee requirement. That is, for any terminal-side common RB established between the first function of the SDAP layer of the terminal side and the second function of the MAC layer, a network-side common RB requiring QoS guarantee in conformity with the any terminal-side common RB is established between the first function of the SDAP layer and the second function of the MAC layer of the network device. The consistent QoS guarantee requirement refers to that the QoS guarantee requirements of the public RB at the network side and the public RB at the terminal side are consistent, and the same QoS requirement can be met.
5) The public RB established between the first function of the SDAP layer and the second function of the MAC layer may be a connection-oriented bearer or a connectionless bearer. Connection-oriented refers to: an RB entity is established between the SDAP and the MAC. The connectionless is that there is no connection entity between the SDAP and the MAC, the public RB only represents the QoS guarantee requirement that needs to be achieved when the data is transmitted between the SDAP and the MAC, and the QoS guarantee requirement represented by the public RB is achieved through a platform or a transmission entity of a transmission network connected between the SDAP and the MAC. The platform is arranged between the SDAP and the MAC and supports functions or entities of the SDAP and the MAC. The above-mentioned transmission network may refer to that the SDAP and the MAC are connected through a deterministic wired network, and then the wired network is responsible for implementing the QoS guarantee requirement represented by the common RB.
6) The transmission direction of the common RB established between the first function of the SDAP layer and the second function of the MAC layer includes unidirectional transmission or bidirectional transmission. That is, the common RB may be a RB corresponding to a single direction, such as transmitting only SDAP-to-MAC data, or transmitting only MAC-to-SDAP data, which means a QoS guarantee requirement representing one direction. In the embodiment of the application, each public RB can be bidirectional, namely, the interactive data between the SDAP and the MAC layer can be transmitted simultaneously. This means that the common RB represents QoS guarantee requirements in both directions.
In addition, it should be noted that, the first function in the embodiment of the present application is a function of the SDAP layer, and the second function is a function of the MAC layer, where the first function and the second function exist on the network device or the terminal side, and may also be referred to as a first functional entity and a second functional entity, or a first functional unit and a second functional unit.
Based on the public RB described above, the embodiment of the present application further provides a data transmission method, which is described below.
Referring to fig. 5, a data transmission method provided by an embodiment of the present application is applied to a first function of an SDAP layer, where the first function of the SDAP layer is a function of an SDAP sub-layer of a certain communication device, and the communication device may be a network device or a terminal, as shown in fig. 5, and the method includes:
Step 51, the first function of the SDAP layer maps the first data packet received from the first QoS flow to the second function of the first public RB and sends the first data packet to the media access control MAC layer according to the QoS guarantee requirement corresponding to the public RB and the QoS requirement of the first QoS flow; and/or the first function of the SDAP layer receives a second data packet sent by the second function of the MAC layer from the second public RB, and maps the second data packet to a second QoS flow of the first terminal for sending according to the terminal identifier of the first terminal and the QoS flow identifier of the second QoS flow carried by the second data packet.
Here, at least one common RB is established between the SDAP layer and the MAC layer, where the common RB is an RB shared by at least one terminal, and each common RB corresponds to a QoS guarantee requirement for data transmission.
Through the steps, the embodiment of the application realizes the data transmission for service between the SDAP layer and the MAC layer through the public RB between the SDAP layer and the MAC layer, thereby realizing the flexible function under the reduced network.
Specifically, the second function of mapping the first data packet received from the first QoS flow to the first common RB and sending the first data packet to the MAC layer according to the QoS guarantee requirement corresponding to the common RB and the QoS requirement of the first QoS flow in step 51 may be executed by the F1 module in fig. 4; the step 51 of receiving the second data packet sent by the second function of the MAC layer from the second common RB, mapping the second data packet to the second QoS flow of the first terminal according to the terminal identifier of the first terminal and the QoS flow identifier of the second QoS flow carried by the second data packet, and sending the second data packet, which may be executed by the F2 module in fig. 4. That is, the first function may be implemented by the F1 module and the F2 module.
In the embodiment of the present application, when the first function of the SDAP layer sends the data of each QoS flow of each UE to the MAC layer, the first function of the SDAP layer may select an RB capable of carrying each QoS flow according to the QoS requirement of the QoS flow and the QoS mapping rule (i.e., the QoS guarantee requirement corresponding to the RB) of each QoS flow (taking the QoS flow as a unit). At this time, in the above step 51, the first function of the SDAP layer may determine a first common RB matching the QoS requirement of the first QoS flow according to the QoS guarantee requirement corresponding to each common RB and the QoS requirement of the first QoS flow; and transmitting the first data packet received from the first QoS flow to the second function of the MAC layer through the first public RB.
In the embodiment of the present application, the mapping process may be performed in units of data packets, and in this case, when the first function of the SDAP layer sends data of each QoS flow of each UE to the MAC layer, the first function may also select an RB capable of carrying each data packet according to the QoS requirement of the data packet and the QoS mapping rule (i.e., the QoS guarantee requirement corresponding to the RB) by sending the data packet (SDU) on each QoS flow. At this time, in the above step 51, the first function of the SDAP layer may receive a first packet from the first QoS flow, and obtain a QoS requirement of the first packet; then, according to QoS guarantee requirements corresponding to the public RBs and QoS requirements of the first data packet, determining a first public RB matched with the QoS requirements of the first data packet; and sending the first data packet to a second function of the MAC layer through the first public RB.
In the above step 51, the embodiment of the present application also implements the function of resolving and routing the SDAP PDU to the QoS flows of different users (Disassembling PDU to route to UEs' QoS flows). As shown in fig. 4, after receiving a data packet from each public RB, the first function of the SDAP layer analyzes the data packet according to a UE Identifier (ID) and a QoS flow identifier carried by the data packet, and sends the data packet to an upper layer through a corresponding QoS flow (with a QoS flow ID indication). The upper layer refers to an upper layer function of the SDAP layer, and specifically may be a user plane function of the layer 3 and/or a UPF of a non-access layer.
In addition, in the embodiment of the present application, the data packet sent from the first function of the SDAP layer to the second function of the MAC layer carries at least one of the following information: the RB identifier of the common RB to which the packet maps, the QoS flow identifier of the QoS flow to which the packet belongs, the terminal identifier to which the packet corresponds, and an SDAP PDU (PDU of the SDAP group, i.e., SDU of MAC). The SDAP PDU is a PDU composed by the SDAP, namely an SDU of the MAC. In the embodiment of the application, the MAC PDU can carry the RB identifier and the QoS stream identifier.
In the embodiment of the present application, the data packet received by the first function of the SDAP layer from the RB carries at least one of the following information: the RB identifier of the common RB to which the packet maps, the QoS flow identifier of the QoS flow to which the packet belongs, the terminal identifier to which the packet corresponds, and the SDAP PDU (i.e., SDU of MAC). Specifically, when the MAC PDU carries the QoS flow identifier, the data packet received by the first function of the SDAP layer from the RB may carry the QoS flow identifier.
Based on the above method, the embodiment of the application can realize flexible selection of protocol functions according to needs, and can reduce RRC signaling overhead and realize a protocol stack scheme of a Service Oriented (SO) Oriented RAN. In addition, because the RB is not special for the UE any more, the embodiment of the application can also avoid the RB switching process when the UE moves.
Optionally, in the embodiment of the present application, the ID of the common RB is: and indexing the QoS guarantee requirement corresponding to the public RB. In addition, the first function of the SDAP layer and the second function of the MAC layer can be directly connected through the public RB.
In addition, in the embodiment of the present application, a terminal-side public RB is established between the first function of the SDAP layer and the second function of the MAC layer of the terminal, and a network-side public RB having a QoS guarantee requirement consistent with the terminal-side public RB is established between the first function of the SDAP layer and the second function of the MAC layer of the network device.
Optionally, any public RB established between the first function of the SDAP layer and the second function of the MAC layer of the network device according to the embodiment of the present application may be used to transmit a packet of at least one QoS flow, where the at least one QoS flow is a QoS flow of one or more terminals, and a QoS requirement of the at least one QoS flow matches a QoS guarantee requirement of the any public RB. That is, the RB is no longer specific to a certain UE.
Referring to fig. 6, a data transmission method provided by an embodiment of the present application is applied to a second function of a MAC layer, where the second function of the MAC layer is a function of a MAC sublayer of a certain communication device, and the communication device may be a network device or a terminal, as shown in fig. 6, and the method includes:
step 61, the second function of the mac layer receives, from a first common RB, a first packet sent by a first function of the SDAP layer, determines, according to QoS guarantee requirements corresponding to the first common RB and the common RB, a QoS requirement of the first packet or a QoS flow, and performs, according to the QoS requirement of the first packet, scheduling of the packet or scheduling of the QoS flow, where the first QoS flow is a QoS flow to which the first packet belongs; and/or, the second function of the MAC layer determines a second public RB matched with the QoS requirement of the second data packet according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the second data packet, and maps the second data packet onto the second public RB to be sent to the first function of the SDAP layer.
Here, at least one common RB is established between the second function of the MAC layer and the first function of the SDAP layer, and each common RB corresponds to a QoS guarantee requirement for data transmission between the second function of the MAC layer and the first function of the SDAP layer.
Through the above steps, the embodiment of the present application implements the RB scheduling (Scheduling DRBs based on their QoS for different UEs) function based on QoS in the transmission direction of the MAC layer. As shown in fig. 4, the MAC may obtain a QoS guarantee requirement required by the data packet or the QoS flow according to the RB identifier of the data packet, and schedule the data packet or the QoS flow based on the QoS guarantee requirement, so that the MAC builds a MAC PDU that is sent by the corresponding terminal at this time.
Specifically, in step 61, a first data packet sent by a first function of the SDAP layer is received from a first public RB, a QoS requirement of the first data packet or a QoS flow is determined according to the QoS guarantee requirement corresponding to the first public RB and the public RB, and scheduling of the data packet or scheduling of the QoS flow is performed according to the QoS requirement of the first data packet, where the first QoS flow is a QoS flow to which the first data packet belongs, and may be executed by an F3 module in fig. 4; the first function of determining a second common RB matching the QoS requirement of the second data packet according to the QoS guarantee requirement corresponding to each common RB and the QoS requirement of the second data packet in step 61, mapping the second data packet onto the second common RB, and sending the second data packet to the SDAP layer may be performed by the F4 module in fig. 4. That is, the second function may be implemented by the F3 module and the F4 module.
Based on the above steps, the embodiment of the present application implements a function of transmitting MAC SDUs (Transmitting SDU based on QoS Rules with UEs' IDs) to the SDAP based on QoS rules in the MAC-receiving direction of the MAC layer. After the MAC receives the MAC PDU, analyzing to obtain the MAC SDU, then according to the QoS rule of the MAC for transmitting data to the SDAP, selecting proper RB corresponding to QoS for each MAC SDU, and then transmitting to the SDAP, thereby newly increasing the transmission capacity of the MAC between the MAC and the SDAP according to the QoS requirement of each SDU.
Based on the method, the embodiment of the application realizes the data transmission with the purpose of service between the MAC layer and the SDAP layer, thereby realizing the flexible function under the reduced network.
Optionally, the second function of the MAC layer may further determine the QoS requirement of the second data packet according to a QoS rule (e.g., a QoS rule that the MAC sends data to the SDAP) before determining a second common RB that matches the QoS requirement of the second data packet.
Optionally, in the embodiment of the present application, the data packet received by the second function of the MAC layer from the RB carries at least one of the following information: the RB identifier of the common RB to which the packet maps, the QoS flow identifier of the QoS flow to which the packet belongs, the terminal identifier to which the packet corresponds, and an SDAP PDU (PDU of the SDAP group, i.e., SDU of MAC). The SDAP PDU is a PDU composed by the SDAP, namely an SDU of the MAC. In the embodiment of the application, the MAC PDU can carry the RB identifier and the QoS stream identifier.
In the embodiment of the present application, the data packet sent by the second function of the MAC layer to the first function of the SDAP layer carries at least one of the following information: the RB identifier of the common RB to which the packet maps, the QoS flow identifier of the QoS flow to which the packet belongs, the terminal identifier to which the packet corresponds, and the SDAP PDU (i.e., SDU of MAC). Specifically, when the MAC PDU carries the QoS flow identifier, the data packet sent by the second function of the MAC layer to the first function of the SDAP layer may carry the QoS flow identifier.
The foregoing describes various methods of embodiments of the present application. An apparatus for carrying out the above method is further provided below.
Referring to fig. 7, an embodiment of the present application further provides a data transmission apparatus 700 applied to a first function of an SDAP layer, as shown in fig. 7, including:
a first processing module 701, configured to map, according to a QoS guarantee requirement corresponding to an RB and a QoS requirement of a first QoS flow, a first data packet received from the first QoS flow onto a first common RB, and send the first data packet to a second function of a medium access control MAC layer;
and/or the number of the groups of groups,
a second processing module 702, configured to receive a second data packet sent by a second function of the MAC layer from a second common RB, and map the second data packet to a second QoS flow of the first terminal for sending according to a terminal identifier of the first terminal and a QoS flow identifier of the second QoS flow carried by the second data packet;
At least one public RB is established between the first function of the SDAP layer and the second function of the MAC layer, and each public RB corresponds to a QoS guarantee requirement of data transmission between the first function of the SDAP layer and the second function of the MAC layer.
Based on the first function of the SDAP layer, the embodiment of the application realizes data transmission for service purpose between the SDAP layer and the MAC layer through the public RB between the SDAP layer and the MAC layer, thereby realizing the flexible function under the reduced network.
Optionally, the first processing module 701 is further configured to determine, according to the QoS guarantee requirement corresponding to each common RB and the QoS requirement of the first QoS flow, a first common RB that matches the QoS requirement of the first QoS flow; and transmitting the first data packet received from the first QoS flow to the second function of the MAC layer through the first public RB.
Optionally, the first processing module 701 is further configured to receive a first data packet from the first QoS flow, and obtain a QoS requirement of the first data packet; determining a first public RB matched with the QoS requirement of a first data packet according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the first data packet; and sending the first data packet to a second function of the MAC layer through the first public RB.
Optionally, the data packet sent from the first function of the SDAP layer to the second function of the MAC layer carries at least one of the following information: the RB identification of the public RB mapped by the data packet, the QoS flow identification of the QoS flow to which the data packet belongs, the terminal identification corresponding to the data packet and the SDAP PDU;
the data packet received by the first function of the SDAP layer from the RB carries at least one of the following information: the RB identifier of the public RB mapped by the data packet, the QoS flow identifier of the QoS flow to which the data packet belongs, the terminal identifier corresponding to the data packet and the SDAP PDU.
For a more detailed description of the common RB established between the first function of the SDAP layer and the second function of the MAC layer, please refer to the above description, which is not repeated here.
It should be noted that, the apparatus in this embodiment is a device corresponding to the method applied to the first function of the SDAP layer, and the implementation manner in each embodiment is applicable to the embodiment of the device, which can achieve the same technical effects. The device provided by the embodiment of the application can realize all the method steps realized by the embodiment of the method and can achieve the same technical effects, and the parts and the beneficial effects which are the same as those of the embodiment of the method in the embodiment are not described in detail.
Referring to fig. 8, an embodiment of the present application further provides a data transmission apparatus 800, which is applied to a first function of an SDAP layer, and includes: a transceiver 801 and a processor 802;
the transceiver 801 is configured to receive and transmit data under the control of the processor 802;
the processor 802 is configured to map, according to a QoS guarantee requirement corresponding to an RB and a QoS requirement of a first QoS flow, a first data packet received from the first QoS flow to a second function of sending the first data packet to a MAC layer on a first common RB; and/or receiving a second data packet sent by a second function of the MAC layer from a second public RB, and mapping the second data packet to a second QoS flow of the first terminal for sending according to a terminal identifier of the first terminal and a QoS flow identifier of the second QoS flow carried by the second data packet;
at least one public RB is established between the first function of the SDAP layer and the second function of the MAC layer, and each public RB corresponds to a QoS guarantee requirement of data transmission between the first function of the SDAP layer and the second function of the MAC layer.
Optionally, the processor 802 is further configured to determine a first public RB that matches the QoS requirement of the first QoS flow according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the first QoS flow; and transmitting the first data packet received from the first QoS flow to the second function of the MAC layer through the first public RB.
Optionally, the processor 802 is further configured to receive a first data packet from the first QoS flow by the first function of the SDAP layer, and obtain a QoS requirement of the first data packet; determining a first public RB matched with the QoS requirement of a first data packet according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the first data packet; and sending the first data packet to a second function of the MAC layer through the first public RB.
Optionally, the data packet sent from the first function of the SDAP layer to the second function of the MAC layer carries at least one of the following information: the RB identification of the public RB mapped by the data packet, the QoS flow identification of the QoS flow to which the data packet belongs, the terminal identification corresponding to the data packet and the SDAP PDU;
the data packet received by the first function of the SDAP layer from the RB carries at least one of the following information: the RB identifier of the public RB mapped by the data packet, the QoS flow identifier of the QoS flow to which the data packet belongs, the terminal identifier corresponding to the data packet and the SDAP PDU.
For a more detailed description of the common RB established between the first function of the SDAP layer and the second function of the MAC layer, please refer to the above description, which is not repeated here.
It should be noted that, the device in this embodiment corresponds to the method applied to the first function side of the SDAP layer, and the implementation manner in each embodiment is applicable to the first function embodiment of the SDAP layer, which can achieve the same technical effects. The first function of the SDAP layer provided by the embodiment of the present application can implement all the method steps implemented by the embodiment of the method and achieve the same technical effects, and the same parts and beneficial effects as those of the embodiment of the method in the embodiment are not described in detail herein.
Referring to fig. 9, an embodiment of the present application further provides a data transmission apparatus 900, applied to a second function of a MAC layer, including:
a first processing module 901, configured to receive a first data packet sent by a first function of an SDAP layer from a first public RB, determine a QoS requirement of the first data packet or a first QoS flow according to QoS guarantee requirements corresponding to the first public RB and the public RB, and schedule the data packet or schedule a QoS flow according to the QoS requirement of the first data packet, where the first QoS flow is a QoS flow to which the first data packet belongs;
and/or the number of the groups of groups,
a second processing module 902, configured to determine a second common RB that matches the QoS requirement of the second data packet according to the QoS guarantee requirement corresponding to each common RB and the QoS requirement of the second data packet, and map the second data packet onto the second common RB, and send the second data packet to the first function of the SDAP layer;
At least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission.
Based on the second function of the MAC layer, the embodiment of the present application realizes data transmission for service purposes between the SDAP layer and the MAC layer through a common RB between the SDAP layer and the MAC layer, thereby realizing a flexible function under the reduced network.
Optionally, the second function of the MAC layer further includes:
and the first determining module is used for determining the QoS requirement of the second data packet according to the QoS rule before determining the second public RB matched with the QoS requirement of the second data packet.
Optionally, the data packet received by the second function of the MAC layer from the RB carries at least one of the following information: the RB identification of the public RB mapped by the data packet, the QoS flow identification of the QoS flow to which the data packet belongs, the terminal identification corresponding to the data packet and the SDAP PDU;
the data packet sent by the second function of the MAC layer to the first function of the SDAP layer carries at least one of the following information: the RB identifier of the public RB mapped by the data packet, the QoS flow identifier of the QoS flow to which the data packet belongs, the terminal identifier corresponding to the data packet and the SDAP PDU.
For a more detailed description of the common RB established between the first function of the SDAP layer and the second function of the MAC layer, please refer to the above description, which is not repeated here.
Note that, the device in this embodiment corresponds to the method applied to the second function side of the MAC layer, and the implementation manner in each of the embodiments described above is applicable to the second function embodiment of the MAC layer, so that the same technical effects can be achieved. The second function of the MAC layer provided by the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effects, and the parts and beneficial effects that are the same as those of the method embodiment in the present embodiment are not described in detail herein.
Referring to fig. 10, an embodiment of the present application further provides a data transmission apparatus 1000, applied to a second function of a MAC layer, including: a transceiver 1001 and a processor 1002;
the transceiver 1001 is configured to receive and transmit data under the control of the processor;
the processor 1002 is configured to receive a first data packet sent by a first function of an SDAP layer from a first common RB, determine a QoS requirement of the first data packet or a first QoS flow according to QoS guarantee requirements corresponding to the first common RB and the common RB, and schedule the data packet or schedule a QoS flow according to the QoS requirement of the first data packet, where the first QoS flow is a QoS flow to which the first data packet belongs; and/or, determining a second public RB matched with the QoS requirement of the second data packet according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the second data packet, and mapping the second data packet onto the second public RB and sending the second data packet to the first function of the SDAP layer;
At least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission.
Optionally, the processor 1002 is further configured to determine, according to QoS rules, a QoS requirement of the second data packet before determining a second common RB that matches the QoS requirement of the second data packet.
Optionally, the data packet received by the second function of the MAC layer from the RB carries at least one of the following information: the RB identification of the public RB mapped by the data packet, the QoS flow identification of the QoS flow to which the data packet belongs, the terminal identification corresponding to the data packet and the SDAP PDU;
the data packet sent by the second function of the MAC layer to the first function of the SDAP layer carries at least one of the following information: the RB identifier of the public RB mapped by the data packet, the QoS flow identifier of the QoS flow to which the data packet belongs, the terminal identifier corresponding to the data packet and the SDAP PDU.
For a more detailed description of the common RB established between the first function of the SDAP layer and the second function of the MAC layer, please refer to the above description, which is not repeated here.
Note that, the device in this embodiment corresponds to the method applied to the second function side of the MAC layer, and the implementation manner in each of the embodiments described above is applicable to the second function embodiment of the MAC layer, so that the same technical effects can be achieved. The second function of the MAC layer provided by the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effects, and the parts and beneficial effects that are the same as those of the method embodiment in the present embodiment are not described in detail herein.
Referring to fig. 11, the embodiment of the present application further provides a first function 1100 of the SDAP layer, including a processor 1101, a memory 1102, and a computer program stored in the memory 1102 and capable of running on the processor 1101, where the computer program when executed by the processor 1101 implements the processes of the data transmission method embodiment executed by the first function of the SDAP layer, and can achieve the same technical effects, and for avoiding repetition, the description is omitted herein.
Referring to fig. 12, the embodiment of the present application further provides a second function 1200 of the MAC layer, including a processor 1201, a memory 1202, and a computer program stored in the memory 1202 and capable of running on the processor 1201, where the computer program when executed by the processor 1201 implements the processes of the above embodiment of the data transmission method executed by the second function of the MAC layer, and can achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the processes of the above-mentioned data transmission method embodiment, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims (24)

1. A data transmission method, comprising:
a first function of a Service Data Adaptation Protocol (SDAP) layer maps a first data packet received from a first QoS flow to a first public RB and sends the first data packet to a second function of a Media Access Control (MAC) layer according to a QoS guarantee requirement corresponding to the public Radio Bearer (RB) and a QoS requirement of the first QoS flow;
and/or the number of the groups of groups,
the first function of the SDAP layer receives a second data packet sent by a second function of the MAC layer from a second public RB, and maps the second data packet to a second QoS flow of the first terminal for sending according to a terminal identifier of the first terminal and a QoS flow identifier of the second QoS flow carried by the second data packet;
at least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission.
2. The method of claim 1 wherein the mapping the first data packets received from the first QoS flow onto the first common RB for transmission to the medium access control second function according to the QoS requirements corresponding to the common radio bearer RB and the QoS requirements of the first QoS flow comprises:
the first function determines a first public RB matched with the QoS requirement of a first QoS flow according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the first QoS flow;
and sending the first data packet received from the first QoS flow to the second function through the first public RB.
3. The method of claim 1 wherein the mapping the first data packets received from the first QoS flow onto the first common RB for transmission to the medium access control second function according to the QoS requirements corresponding to the common radio bearer RB and the QoS requirements of the first QoS flow comprises:
the first function receives a first data packet from the first QoS flow and obtains the QoS requirement of the first data packet;
determining a first public RB matched with the QoS requirement of a first data packet according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the first data packet;
And sending the first data packet to the second function through the first public RB.
4. The method of claim 1, wherein the identity ID of the common RB is: and indexing the QoS guarantee requirement corresponding to the public RB.
5. The method of claim 1, wherein the first function and the second function are directly connected through the common RB.
6. The method of claim 1, wherein the step of determining the position of the substrate comprises,
and establishing a public RB at the terminal side between the first function and the second function of the terminal, and establishing a public RB at the network side, which is consistent with the public RB at the terminal side and has QoS guarantee requirements, between the first function and the second function of the network equipment.
7. The method of claim 1, wherein any common RB established between the first function and the second function of the network device is used for transmitting data packets of at least one QoS flow, the at least one QoS flow being a QoS flow of one or more terminals, and a QoS requirement of the at least one QoS flow matches a QoS guarantee requirement of the any common RB.
8. The method of claim 1, wherein the common RB established between the first and second functions is a connection-oriented bearer or a connectionless bearer, wherein the connectionless RB refers to no connection entity between the first and second functions.
9. The method of claim 1, wherein the transmission direction of the common RB established between the first and second functions comprises unidirectional transmission or bidirectional transmission.
10. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the data packet sent by the first function to the second function carries at least one of the following information: the RB identification of the public RB mapped by the data packet, the QoS flow identification of the QoS flow to which the data packet belongs, the terminal identification corresponding to the data packet and the SDAP PDU;
the data packet received by the first function from the RB carries at least one of the following information: the RB identifier of the public RB mapped by the data packet, the QoS flow identifier of the QoS flow to which the data packet belongs, the terminal identifier corresponding to the data packet and the SDAP PDU.
11. A data transmission method, comprising:
the second function of the MAC layer receives a first data packet sent by the first function of the SDAP layer from a first public RB, determines the QoS requirement of the first data packet or a first QoS stream according to the QoS guarantee requirements corresponding to the first public RB and the public RB, and performs scheduling of the data packet or scheduling of the QoS stream according to the QoS requirement of the first data packet, wherein the first QoS stream is the QoS stream to which the first data packet belongs;
And/or the number of the groups of groups,
the second function of the MAC layer determines a second public RB matched with the QoS requirement of a second data packet according to the QoS requirement corresponding to each public RB and the QoS requirement of the second data packet, and maps the second data packet to the first function of the second public RB and sends the second data packet to the SDAP layer;
at least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission.
12. The method of claim 11, further comprising, prior to determining a second common RB that matches the QoS requirement of the second data packet:
the second function determines a QoS requirement of the second data packet according to the QoS rule.
13. The method of claim 11, wherein the identity ID of the common RB is: and indexing the QoS guarantee requirement corresponding to the public RB.
14. The method of claim 11, wherein the second function is directly connected with the first function through the common RB.
15. The method of claim 11, wherein a terminal-side common RB established between the first function and the second function of the terminal establishes a network-side common RB having QoS guarantee requirements consistent with the terminal-side common RB between the first function and the second function of the network device.
16. The method of claim 11, wherein any common RB established between the second function and the first function of the network device is used for transmitting packets of at least one QoS flow, the at least one QoS flow being a QoS flow of one or more terminals, and a QoS requirement of the at least one QoS flow matches a QoS guarantee requirement of the any common RB.
17. The method of claim 11, wherein the common RB established between the second function and the first function is a connection-oriented bearer or a connectionless bearer, wherein the connectionless RB refers to no connection entity between the first function and the second function.
18. The method of claim 11, wherein the transmission direction of the common RB established between the second function and the first function comprises unidirectional transmission or bidirectional transmission.
19. The method of claim 11, wherein the step of determining the position of the probe is performed,
the data packet received by the second function from the RB carries at least one of the following information: the RB identification of the public RB mapped by the data packet, the QoS flow identification of the QoS flow to which the data packet belongs, the terminal identification corresponding to the data packet and the SDAP PDU;
The data packet sent by the second function to the first function carries at least one of the following information: the RB identifier of the public RB mapped by the data packet, the QoS flow identifier of the QoS flow to which the data packet belongs, the terminal identifier corresponding to the data packet and the SDAP PDU.
20. A data transmission apparatus, characterized by a first function applied to an SDAP layer, comprising: a transceiver and a processor:
the transceiver is used for receiving and transmitting data under the control of the processor;
the processor is used for mapping a first data packet received from a first QoS flow to a first public RB and sending the first data packet to a second function of a MAC layer according to a QoS guarantee requirement corresponding to the RB and a QoS requirement of the first QoS flow; and/or receiving a second data packet sent by a second function of the MAC layer from a second public RB, and mapping the second data packet to a second QoS flow of the first terminal for sending according to a terminal identifier of the first terminal and a QoS flow identifier of the second QoS flow carried by the second data packet;
at least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission.
21. A data transmission apparatus, characterized by a first function applied to an SDAP layer, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any one of claims 1 to 10.
22. A data transmission apparatus, characterized by a second function applied to a MAC layer, comprising: a transceiver and a processor:
the transceiver is used for receiving and transmitting data under the control of the processor;
the processor is configured to receive a first data packet sent by a first function of an SDAP layer from a first public RB, determine a QoS requirement of the first data packet or a first QoS flow according to QoS guarantee requirements corresponding to the first public RB and the public RB, and schedule the data packet or schedule a QoS flow according to the QoS requirement of the first data packet, where the first QoS flow is a QoS flow to which the first data packet belongs; and/or, determining a second public RB matched with the QoS requirement of the second data packet according to the QoS guarantee requirement corresponding to each public RB and the QoS requirement of the second data packet, and mapping the second data packet onto the second public RB and sending the second data packet to the first function of the SDAP layer;
At least one public RB is established between the SDAP layer and the MAC layer, the public RB is shared by at least one terminal, and each public RB corresponds to a QoS guarantee requirement of data transmission.
23. A data transmission apparatus, characterized by a second function applied to a MAC layer, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any one of claims 11 to 19.
24. A computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 19.
CN202210528202.8A 2022-05-16 2022-05-16 Data transmission method, device and storage medium Pending CN117119411A (en)

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