WO2022007829A1 - 数据的传输方法、装置及设备 - Google Patents

数据的传输方法、装置及设备 Download PDF

Info

Publication number
WO2022007829A1
WO2022007829A1 PCT/CN2021/104920 CN2021104920W WO2022007829A1 WO 2022007829 A1 WO2022007829 A1 WO 2022007829A1 CN 2021104920 W CN2021104920 W CN 2021104920W WO 2022007829 A1 WO2022007829 A1 WO 2022007829A1
Authority
WO
WIPO (PCT)
Prior art keywords
functional entity
data
layer
bearer
mac
Prior art date
Application number
PCT/CN2021/104920
Other languages
English (en)
French (fr)
Inventor
刘光毅
孙军帅
黄宇红
Original Assignee
中国移动通信有限公司研究院
中国移动通信集团有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国移动通信有限公司研究院, 中国移动通信集团有限公司 filed Critical 中国移动通信有限公司研究院
Priority to EP21836899.1A priority Critical patent/EP4181622A1/en
Priority to US18/013,614 priority patent/US20230292178A1/en
Publication of WO2022007829A1 publication Critical patent/WO2022007829A1/zh

Links

Images

Classifications

    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • 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
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • 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
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • 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
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
    • 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]

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a data transmission method, apparatus, and device.
  • a third-generation (3 rd Generation, 3G) / fourth generation (4 th Generation, 4G) / fifth generation (5 th Generation, 5G) system in (terminal side AS layer.
  • the control plane Control Plane, CP
  • the radio resource control (Radio Resource Control, RRC) protocol layer completes the radio resource control function, and does not have the data processing function of the UP plane.
  • the existing L2 packet processing function (Packet Processing: packet processing) of the AS layer has been redesigned.
  • the new L2 packet processing function is mainly to undertake the characteristics of the upper-layer service data, and combine the channel characteristics of the lower-layer air interface to form a combination of air interface and Quality of Service (QoS) indicators and operations for business characteristics.
  • QoS Quality of Service
  • the L2 data plane functions in 5G include Service Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) and MAC and other protocol functions entity.
  • SDAP Service Data Adaptation Protocol
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC MAC and other protocol functions entity.
  • SDAP Service Data Adaptation Protocol
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Management Entity
  • the functions of the relevant SDAP/PDCP/RLC/MAC protocols in data packet processing are defined by the relevant L2 protocols, and the processing of the data packets includes: multiplexing, header compression/decompression, encryption/decryption, segmentation, and repetition. transmission and other functions.
  • RLC has a sorting function for segmented data packets
  • PDCP has a sorting function for all data packets, whether it is ultra-reliable and low-latency.
  • Communication Ultra-Reliable and Low Latency Communications, URLLC
  • eMBB enhanced Mobile Broadband
  • mMTC massive Machine Type Communication
  • the present disclosure provides a data transmission method, apparatus and device. To achieve the simplification of the L2 layer, it is no longer necessary to perform multi-layer protocol processing on the data.
  • a data transmission method applied to Layer 2 L2, the method comprising:
  • Data packet transmission is performed between the second functional entity of the L2 medium access control MAC and the first functional entity of the layer 3 L3, and the first functional entity of the layer 3 L3 is the access layer AS that processes the user plane UP data. functional entity.
  • the transmission of data packets between the second functional entity of the media access control MAC of the L2 and the first functional entity of the Layer 3 L3 includes:
  • the second functional entity of the medium access control MAC of the L2 receives the data packet sent by the first functional entity of the layer three L3, processes the data packet and sends the data packet to the layer one L1.
  • the transmission of data packets between the second functional entity of the media access control MAC of the L2 and the first functional entity of the Layer 3 L3 includes:
  • the second functional entity of the L2 receives data from the L1, processes the data to obtain a data packet, and sends the data packet to the first functional entity of the L3.
  • the second functional entity of the media access control MAC of the L2 receives the data packet sent by the first functional entity of the layer three L3 layer, and sends the data packet to the layer one L1 after processing, including:
  • the second functional entity of L2 receives the data packet sent by the first functional entity of L3;
  • the second functional entity of the L2 forms the data packet into a media access control MAC protocol data unit (protocol data unit, PDU), and sends the MAC PDU to the L1.
  • PDU media access control MAC protocol data unit
  • the data transmission method further includes at least one of the following:
  • the second functional entity of the L2 determines the QoS characteristic value of the lower layer bearer according to the QoS flow group or the quality of service QoS parameter of the lower layer bearer configured by the RRC or indicated by the MAC scheduler;
  • the second functional entity of the L2 maps the upper layer bearer to the lower layer bearer according to the QoS characteristic value of the lower layer bearer.
  • the second functional entity of the L2 maps the upper layer bearer to the lower layer bearer according to the QoS feature value of the lower layer bearer, including:
  • the second functional entity of the L2 directly maps the upper layer bearer to the lower layer bearer;
  • the QoS characteristic value of the second functional entity of the L2 at the lower layer bearer does not meet the QoS requirement of the upper layer bearer, then modify its QoS characteristic value to meet the QoS requirement of the upper layer bearer, and map the upper layer bearer to the lower layer bearer. on the load; or,
  • the second functional entity of the L2 selects a lower layer bearer according to the QoS parameters of the upper layer bearer, and maps the upper layer bearer to the lower layer bearer.
  • the lower layer bearer includes: a logical channel, a transport channel and/or a physical channel.
  • each of the lower-layer bearers has a data cache unit, a lower-layer bearer carries one or more data packets carried by an upper-layer bearer, and each upper-layer bearer carried on the lower-layer bearer is cached to the lower-layer bearer. in the cache.
  • the serial number of the upper-layer bearer carried on the lower-layer bearer inside the MAC consists of an identifier of the lower-layer bearer and an identifier of the upper-layer bearer inside the lower-layer bearer.
  • the data transmission method further includes: classifying upper layer bearers according to QoS parameters to obtain multiple upper layer bearer groups.
  • the QoS characteristic value of the lower layer bearer is determined according to the QoS characteristic value of the upper layer bearer carried by the lower layer bearer and/or the scheduler of the MAC of the L2 is determined according to the statistical characteristic value of the air interface.
  • the data packet is formed into a media access control protocol data unit MAC PDU, and the MAC PDU is sent to L1, including:
  • the data packet is formed into a medium access control protocol data unit MAC PDU, and the MAC PDU is sent to the L1.
  • the data transmission method further includes: when the second functional entity of the L2 performs data reorganization according to the instruction of the scheduler, reorganizing the upper layer bearer to perform MAC PDU reorganization.
  • the MAC PDU carries at least one of the following:
  • the DP functional entity of the L2 receives data from the L1, processes the data to obtain a data packet, and sends the data packet to the first functional entity of the L3, including:
  • the second functional entity of the L2 receives data from the L1 layer
  • the received data is processed to obtain the MAC PDU
  • Embodiments of the present disclosure also provide a data transmission apparatus, which is applied to a communication device, where the communication device includes a layer 3 L3, a layer 2 L2, and a layer 1 L1; the second functional entity of the media access control MAC of the L2 is related to Data packet transmission is performed between the first functional entities of Layer 3 L3, where the first functional entity of Layer 3 L3 is the functional entity of the access layer AS processing user plane UP data.
  • the transmission of data packets between the second functional entity of the media access control MAC of the L2 and the first functional entity of the Layer 3 L3 includes:
  • the second functional entity of the medium access control MAC of the L2 receives the data packet sent by the first functional entity of the layer three L3, processes the data packet and sends the data packet to the layer one L1.
  • the transmission of data packets between the second functional entity of the media access control MAC of the L2 and the first functional entity of the Layer 3 L3 includes:
  • the second functional entity of the L2 receives data from the L1, processes the data, obtains a data packet, and sends the data packet to the first functional entity of the L3.
  • the second functional entity of the media access control MAC of the L2 receives the data packet sent by the first functional entity of the layer three L3 layer, and sends the data packet to the layer one L1 after processing, including:
  • the second functional entity of L2 receives the data packet sent by the first functional entity of L3;
  • the second functional entity of the L2 forms the data packet into a media access control protocol data unit MAC PDU, and sends the MAC PDU to the L1.
  • the data transmission device further includes:
  • the second functional entity of the L2 determines the QoS feature value of the lower layer bearer according to the QoS flow group or the QoS parameter of the lower layer bearer configured by the RRC or indicated by the MAC scheduler;
  • the second functional entity of the L2 maps the upper layer bearer to the lower layer bearer according to the QoS characteristic value of the lower layer bearer.
  • the second functional entity of the L2 maps the upper layer bearer to the lower layer bearer according to the QoS feature value of the lower layer bearer, including:
  • the second functional entity of the L2 directly maps the upper layer bearer to the lower layer bearer;
  • the QoS characteristic value of the second functional entity of the L2 at the lower layer bearer does not meet the QoS requirement of the upper layer bearer, then modify its QoS characteristic value to meet the QoS requirement of the upper layer bearer, and map the upper layer bearer to the lower layer bearer. on the load; or,
  • the second functional entity of the L2 selects a lower layer bearer according to the QoS parameters of the upper layer bearer, and maps the upper layer bearer to the lower layer bearer.
  • the lower layer bearer includes: a logical channel, a transport channel and/or a physical channel.
  • each of the lower-layer bearers has a data cache unit, a lower-layer bearer carries one or more data packets carried by an upper-layer bearer, and each upper-layer bearer carried on the lower-layer bearer is cached to the lower-layer bearer. in the cache.
  • the serial number of the upper-layer bearer carried on the lower-layer bearer inside the MAC consists of an identifier of the lower-layer bearer and an identifier of the upper-layer bearer inside the lower-layer bearer.
  • the second functional entity of the L2 classifies the upper layer bearers according to QoS parameters to obtain multiple upper layer bearer groups.
  • the QoS characteristic value of the lower layer bearer is determined according to the QoS characteristic value of the upper layer bearer carried by the lower layer bearer and/or the scheduler of the MAC of the L2 is determined according to the statistical characteristic value of the air interface.
  • the data packet is formed into a media access control protocol data unit MAC PDU, and the MAC PDU is sent to L1, including:
  • the data packet is formed into a medium access control protocol data unit MAC PDU, and the MAC PDU is sent to the L1.
  • the data transmission device further includes:
  • the second functional entity of the L2 When performing data reorganization according to the instruction of the scheduler, the second functional entity of the L2 performs MAC PDU reorganization on the upper layer bearer.
  • the MAC PDU carries at least one of the following:
  • the ID of the lower layer bearer The ID of the lower layer bearer, the ID of the upper layer bearer to which the MAC PDU belongs, the identifier N of whether the data on multiple upper layer bearers is included at the same time, the length of the data packet, and the length indicator of the length of the data packet.
  • the second functional entity of the L2 receives data from the L1, processes the data to obtain a data packet, and sends the data packet to the first functional entity of the L3, including:
  • the second functional entity of the L2 receives data from the L1 layer
  • the received data is processed to obtain the MAC PDU
  • Embodiments of the present disclosure further provide a communication device, including: Layer 3 L3, Layer 2 L2, and Layer 1 L1; a transceiver of the L2, configured to access the second functional entity of the MAC through the media access control of the L2 and Data packet transmission is performed between the first functional entities of Layer 3 L3, where the first functional entity of Layer 3 L3 is the functional entity of the access layer AS processing user plane UP data.
  • a communication device including: Layer 3 L3, Layer 2 L2, and Layer 1 L1; a transceiver of the L2, configured to access the second functional entity of the MAC through the media access control of the L2 and Data packet transmission is performed between the first functional entities of Layer 3 L3, where the first functional entity of Layer 3 L3 is the functional entity of the access layer AS processing user plane UP data.
  • Embodiments of the present disclosure also provide a communication device, including: a processor, and a memory storing a computer program, the computer program executing the above-described method when executed by the processor.
  • Embodiments of the present disclosure also provide a computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method as described above.
  • data packet transmission is performed between the second functional entity of the L2 medium access control MAC and the first functional entity of the Layer 3 L3.
  • L2 transmits data packets between the second functional entity and the first functional entity of L3, so that L2 can directly transmit data packets with the first functional entity of L3, and L2 no longer needs to transmit data packets.
  • the second functional entity of the media access control MAC of the L2 receives the data packet sent by the first functional entity of the L3, and sends the data packet to the L1; the second functional entity of the L2 receives the data from the L1, Process the data, obtain a data packet, and send the data packet to the first functional entity of L3; here, L2 directly sends the data packet to the L1 layer, and directly sends the data of the L1 layer to the L3 layer, thereby To achieve the simplification of the L2 layer, it is no longer necessary to perform multi-layer protocol processing on the data.
  • Figure 1 is a functional schematic diagram of the AS layer protocol stack
  • FIG. 2 is a schematic diagram of a protocol functional entity of an L2 data plane functional entity
  • FIG. 4 is an overall schematic diagram of a DP functional entity of a MAC
  • Fig. 5 is the schematic diagram of DP functional entity data processing of MAC
  • FIG. 6 is a schematic diagram of the MAC PDU format
  • Fig. 7 is the flow of RRC establishment and reconfiguration between network and UE
  • Figure 8 shows the configuration flow of the L3 UP and MAC functional entities by the RRC inside the network and the UE, respectively.
  • the user plane (User Plane, UP) is introduced into the layer 3 of the access layer (Access Stratum, AS) (Layer 3, L3, the RRC layer of the AS layer in the 5G system is called the 3-layer protocol).
  • the UP function of L3 is responsible for the storage and forwarding of data packets at the AS layer, and in the process of data transmission, data packets are sent and received through the data air interface reported by L2. Whether the transmission is correct or not, L3 UP completes the support processing function of the data.
  • L3 UP completes the support processing function of the data.
  • MAC medium access control
  • the UP of the L3 of the AS layer has the function of sending an Internet protocol (Internet protocol, IP) packet for the first time or more than once.
  • IP Internet protocol
  • the L3 user plane (User Plane, UP) functional entity sends the data packet to the L2 MAC functional entity.
  • the MAC functional entity receives the data packet, it schedules and completes the formation of the MAC PDU and sends it to the air interface.
  • L2 Based on the function of L3 UP, L2 provides L3 UP with various control information such as data sending and receiving instructions, data retransmission instructions, data backup and new instructions, and realizes the precise distribution of data packets by the L3 UP layer.
  • the AS layer includes layer 1 (Layer 1, L1, physical layer), layer 2 (Layer 2, L2) and layer 3 (Layer 3, L3).
  • an embodiment of the present disclosure provides a data transmission method, which is applied to Layer 2 L2, and the method includes:
  • Step 30 Data packet transmission is performed between the second functional entity of the L2 medium access control MAC and the first functional entity of the Layer 3 L3.
  • L2 transmits data packets between the second functional entity and the first functional entity of L3, so that L2 can directly transmit data packets with the first functional entity of L3, and L2 no longer needs to transmit data packets. Carry out multi-layer protocol processing to achieve L2 simplification.
  • this step 30 may include:
  • Step 31 The second functional entity of the media access control MAC of the L2 receives the data packet sent by the first functional entity of the layer three L3, processes the data packet and sends it to the layer one L1;
  • the data packet here may include a control Data packets (such as control PDUs and data data packets (such as data PDUs); here, when the UP functional entity of L3 sends a data packet to L2, it can be sent through an IP stream, or through a logical channel or a radio bearer RB; here the first A functional entity may be similar to the user plane UP functional entity, and has the ability to receive and transmit data;
  • the second functional entity here may be the data processing function (Data Process, DP) entity of the MAC, which can receive data packets sent by L3, It can also receive data packets sent by L1, and has the ability to receive and send data;
  • Data Process, DP Data Process
  • Step 32 The second functional entity of L2 receives data from L1, processes the data to obtain a data packet, and sends the data packet to the first functional entity of L3.
  • the first functional entity of L3 sends the data packet to the data processing function DP functional entity of the MAC layer through the IP stream, and the DP functional entity of the MAC layer can also parse the data packet received from L1 to obtain the The data packet is sent to the first functional entity of L3 through an IP flow (IP Flow).
  • IP Flow IP flow
  • the basic functions of the MAC include a DP functional entity, a scheduler (Scheduler), a hybrid automatic repeat request (Hybrid automatic repeat request, HARQ) functional entity and other functional entities.
  • step 31 may include:
  • the second functional entity of L2 receives the data packet sent by the first functional entity of L3;
  • the second functional entity of the L2 forms the data packet into a media access control protocol data unit MAC PDU, and sends the MAC PDU to the L1.
  • the above method may further include:
  • the second functional entity of the L2 determines the lower layer according to the QoS flow group or the quality of service QoS parameter (the configuration is the QoS feature value of multiple IP flows) carried by the lower layer configured by the RRC or indicated by the MAC scheduler. Bearer QoS characteristic value;
  • the second functional entity of the L2 maps the upper layer bearer to the lower layer bearer according to the QoS characteristic value of the lower layer bearer.
  • the upper layer bearer may be an IP stream or other type of bearer;
  • the DP functional entity uses the signaling parameters configured by the RRC as the basic QoS feature value and the basic rules for mapping IP streams to lower layer bearers, and performs grouping of IP streams (IP Flow Group), and determine the QoS characteristic value (QoS parameter) of the IP flow group or the lower-layer bearer, and determine each IP flow and the lower-layer bearer, where the lower-layer bearer can be a logical channel (Logical Channel), or a physical channel or The mapping relationship of other low-level carriers);
  • the DP updates the QoS parameters (eigenvalues) of the IP flow or IP flow group according to the instruction of the scheduler, thereby adjusting the mapping relationship with the lower layer bearer.
  • the DP of the MAC buffers or multiplexes the data packets on each IP flow to the corresponding lower-layer bearer, and forms a MAC PDU.
  • the scheduler instructs the DP functional module to perform data reorganization
  • the DP functional module completes the reorganization of the MAC PDU according to the scheduler's instruction, and sends it to the HARQ functional entity.
  • the DP functional entity mainly includes QoS Control (QoS control function), buffering and data packet formation and disassembly functions.
  • the QoS control entity forms a QoS flow group according to the QoS parameters (characteristic values) of each QoS flow configured by the RRC signaling, and completes the setting of the QoS flow groups or the QoS parameters (characteristic values) of each lower layer bearer.
  • the second functional entity of the L2 maps the upper layer bearer to the lower layer bearer according to the QoS feature value of the lower layer bearer, including:
  • the second functional entity of the L2 directly maps the upper layer bearer to the lower layer bearer;
  • the QoS characteristic value of the second functional entity of the L2 at the lower layer bearer does not meet the QoS requirement of the upper layer bearer, then modify its QoS characteristic value to meet the QoS requirement of the upper layer bearer, and map the upper layer bearer to the lower layer bearer. on the load; or,
  • the second functional entity of the L2 selects a lower layer bearer according to the QoS parameters of the upper layer bearer, and maps the upper layer bearer to the lower layer bearer. That is, a lower-layer bearer is selected, the QoS parameter capability of the upper-layer bearer is assigned to the lower-layer bearer, and the upper-layer bearer is mapped to the lower-layer bearer.
  • the lower layer bearers here may include: logical channels, transport channels and/or physical channels.
  • each of the lower-layer bearers has a data cache unit, a lower-layer bearer carries one or more data packets carried by the upper-layer, and each upper-layer bearer carried on the lower-layer bearer is cached in the cache of the lower-layer bearer middle.
  • a data buffer (Data Buffer) is established according to the lower-layer bearer unit.
  • Each lower-layer bearer has a data cache, each lower-layer bearer carries one or more data packets of IP flows, and the data packets of each IP flow carried on the lower-layer bearer are cached in the cache of the lower-layer bearer; DP functional entity
  • the MAC layer receives the data packets of the L3 UP functional entity and buffers them in the corresponding buffers.
  • the MAC PDUs sent to the air interface are formed. .
  • the number of the upper layer bearer carried on the lower layer bearer and inside the MAC is composed of the identifier of the lower layer bearer and the identifier of the upper layer bearer inside the lower layer bearer.
  • IP flows carried onto a lower layer bearer use the numbering within the lower layer bearer.
  • the addressing mode of an IP flow is: Lower Bearer ID+IP Flow_Offset_ID, where Lower Bearer ID is the ID of the lower-layer bearer, and IP Flow_Offset_ID is the ID of the IP flow in the lower-layer bearer.
  • the index value of the IP flow in each lower-layer bearer is 0 as the starting value. For example, if 4 IP flows are carried on the lower-layer bearer, the IDs of these 4 IP flows are 0, 1, and 2. , 3.
  • the above method may further include:
  • the upper-layer bearers are classified according to the QoS parameters to obtain multiple upper-layer bearer groups.
  • it can be divided into multiple IP flow groups according to the QoS requirements of the IP flows carried on the lower layer bearer, wherein the QoS requirements of the IP flow groups are obtained according to the QoS requirements of each IP flow in the IP flow group. ;
  • the data of all QoS flows of the same IP flow group are buffered into a buffer of the lower layer bearer.
  • the IP flows carried on the lower layer bearer can be divided into several IP flow groups according to the QoS requirements (index parameters) of each IP flow, and the QoS requirements (index parameters) of each IP flow group can be divided into several IP flow groups.
  • parameter) is obtained according to the QoS requirements of each IP flow in the IP flow group, for example, by linear fitting, or taking an average value, or taking a maximum value and other methods.
  • the data buffer carried by the lower layer can be divided according to the IP flow group, and the data of all QoS flows in the same IP flow group are buffered together.
  • the QoS characteristic value of the lower layer bearer is determined according to the QoS characteristic value of the IP flow carried by the lower layer bearer and the scheduler of the L2 MAC according to the statistical characteristic value of the air interface.
  • the QoS characteristic value of the lower layer bearer is jointly determined by the QoS characteristic value of the upper layer bearer and the statistical characteristic value of the scheduler according to the air interface (long-term air interface data sending and receiving characteristic, cell load statistical characteristic value). Either one can be obtained by mathematical fitting of the two (linear fitting is performed using normalized calculation primers).
  • the data packet is formed into a media access control protocol data unit MAC PDU, and the MAC PDU is sent to L1, including:
  • the data packet is formed into a medium access control protocol data unit MAC PDU, and the MAC PDU is sent to the L1.
  • the data transmission method may further include: when the second L2 functional entity performs data reorganization according to the instruction of the scheduler, reorganizing the MAC PDU on the upper layer bearer Formation, further, the reorganized MAC PDU can be sent to the hybrid automatic repeat HARQ function entity of the MAC of the L2.
  • the MAC PDU carries at least one of the following: an ID of a lower-layer bearer, an ID of an upper-layer bearer to which the MAC PDU belongs, an identifier of whether data on multiple upper-layer bearers is included at the same time N, the length of the data packet, and the length indication identifier of the data packet length.
  • the second functional entity of the L2 receives data from the L1, processes the data to obtain a data packet, and sends the data packet to the first functional entity of the L3, including:
  • the second functional entity of the L2 receives data from the L1 layer
  • the received data is processed to obtain the MAC PDU
  • the scheduler when the scheduler needs to dynamically modify the QoS flow group or the QoS parameters (eigenvalues) carried by each lower layer, transmits and receives the information of air interface data, the air interface channel quality of the user, the load information of the cell, and the scheduler.
  • the probability or times of scheduling users are sent to the QoS control, and the QoS control updates the QoS flow group or the lower-layer bearer QoS parameters (eigenvalues) according to the information; or according to the new QoS parameters (eigenvalues), the QoS flow group is mapped to the new low-level carrier.
  • the data packet assembling and disassembling function (Assembling&disassembling MAC PDU) is responsible for assembling the MAC PDU, reorganizing the MAC PDU, and parsing the MAC PDU to obtain the IP packet.
  • the ID carried by the lower layer indicates the identity, other information, where:
  • Bearer ID The lower layer bearer ID is the ID of the bearer that carries the MAC PDU, and the length is one byte or several bits.
  • IP flow ID The IP flow ID to which the MAC SDU (IP packet) contained in the MAC PDU this time belongs, with a length of an entire byte or a few bits.
  • N Whether the data contained in this MAC PDU comes from multiple IP flows, the value is "Yes", and "No". For example, 0: No, means there is only one IP flow; 1: Yes, means more than one IP flow. This field is one bit long.
  • F The length indicator of the length of the data packet; the two options for the length of the data packet are one byte and two bytes. For example, 0: indicates a length of one byte; 1: a length of two bytes. This field is 1 bit long.
  • L The length field of the data packet, indicating the byte length of the data packet.
  • the field length is 8 bits or 16 bits.
  • N is one bit
  • the lower layer bearer ID is 6 bits
  • the IP stream ID is 7 bits
  • F is 1 bit.
  • IP flow ID When an IP flow has multiple data packets to be sent at the same time, fill in the IP flow ID according to the individual data packets. For example, if IP Flow#0 wants to send three independent data packets, there are three IP Flow#0 and corresponding data length fields at the same time.
  • the bearer ID and N fields are obtained from the first byte. It can be determined whether it is a data packet through the LC ID. If it is a data packet, judge whether there are data packets of multiple IP flows according to the N field.
  • IP flow data packets obtain all IP flow information according to the combination of F+IP Flow ID+L, and obtain the corresponding data packet according to each IP flow information.
  • a low-layer bearer can carry up to 128 IP flows.
  • the sender constructs the MAC PDU according to the parsing method of the receiver above.
  • the RRC signaling configures the mapping relationship between the L3 UP and the MAC to the IP flow ID.
  • the lower layer bearer is represented by taking the logical channel as an example.
  • the ID of each IP flow (the ID is the ID of the IP flow inside the LC, that is, the unified number of all IP flows carried on one LC)
  • the IP flow ID defined in FIG. 4 is 7 bits, so the maximum number is 128, and the value range of the IP flow ID is: 0-127.
  • the RRC on the UE side After receiving the signaling configured by the RRC on the network side, the RRC on the UE side configures the MAC and L3 UP on the UE side.
  • the RRC on the network side and the UE side are configured with respective MAC and L3 UP.
  • the content configured to the MAC is: all the above-mentioned content in the above signaling, except for the part "ID or index of the IP flow of the L3 UP corresponding to each IP flow", which is optional at the MAC layer and can be configured or Do not configure.
  • the MAC layer classifies the IP flow according to the QoS parameters of the LC and the QoS parameters of the IP flow, and combines the scheduled air interface status to generate the corresponding IP flow group, and compares the QoS parameters of the LC and the IP flow or the IP flow group. After improvement, the QoS parameters used in MAC scheduling of LG and IP flows (groups) are obtained respectively.
  • the content configured for L3 UP is: among all the above-mentioned contents in the above-mentioned signaling,
  • the ID of each IP flow (the ID is the ID of the IP flow inside the LC, that is, the unified number of all IP flows carried on one LC)
  • the IP flow ID defined in FIG. 4 is 7 bits, so the maximum number is 128, and the value range of the IP flow ID is: 0-127.
  • this part is optional in L3 UP, which can be configured or not.
  • the L3 UP functional entity receives the IP packet sent by the upper layer:
  • the LC ID corresponding to the IP flow and the flow ID inside the LC are obtained.
  • the DP functional entity of the MAC After the DP functional entity of the MAC receives the data packet, it buffers it into the data buffer (Buffer) of the LC according to the LC ID it carries and the stream ID inside the LC, and obtains the corresponding QoS parameters.
  • Buffer data buffer
  • the scheduler of the MAC After the scheduler of the MAC is adjusted, it informs the DP to form the corresponding MAC PDU, and sends it to L1 according to the instruction of the scheduler to adjust the result.
  • HARQ feeds back the reorganized configuration information to the scheduler, and the scheduler instructs the DP to reorganize the MAC PDU.
  • the MAC After the MAC receives the data from L1, it obtains the MAC PDU according to the instruction information of the scheduler. Obtain the LCID and QoS Flow ID from the MAC PDU. According to these two IDs, the IP packet obtained by the analysis is sent to the receiving module related to L3 UP. After the L3UP is processed, it is sent to the upper layer through the IP stream.
  • the IP flow is directly mapped to the logical channel; the global IP flow (long ID) and the IP flow in the LC (short ID) are used to reduce the overhead of the MAC PDU; the logic in the 5G MAC can be maintained.
  • the architecture of the channel group (Logical Channel Group, LCG) as the basic unit remains unchanged. The node that simplifies the internal data processing of L2.
  • SDAP/PDCP/RLC in 5G, which involves the mapping of QoS flow to data radio bearer (DRB), and the mapping of DRB to logical channel; realizes the MAC scheduler to chain
  • DRB data radio bearer
  • Embodiments of the present disclosure also provide a data transmission apparatus, which is applied to a communication device, where the communication device includes a layer 3 L3, a layer 2 L2, and a layer 1 L1; the second functional entity of the media access control MAC of the L2 is related to Data packet transmission is performed between the first functional entities of Layer 3 L3.
  • the data packet transmission between the second functional entity of the media access control MAC of the L2 and the first functional entity of the Layer 3 L3 includes:
  • the second functional entity of the medium access control MAC of the L2 receives the data packet sent by the first functional entity of the layer three L3, processes the data packet and sends the data packet to the layer one L1.
  • the transmission of data packets between the second functional entity of the media access control MAC of the L2 and the first functional entity of the Layer 3 L3 includes:
  • the second functional entity of L2 receives the data packet sent by the first functional entity of L3;
  • the second functional entity of the L2 forms the data packet into a media access control protocol data unit MAC PDU, and sends the MAC PDU to the L1.
  • the data transmission apparatus further includes: the second functional entity of the L2 determines the QoS of the lower layer bearer according to the QoS flow group or the quality of service QoS parameter of the lower layer bearer configured by the radio resource control RRC or indicated by the MAC scheduler. Eigenvalues;
  • the second functional entity of the L2 maps the upper layer bearer to the lower layer bearer according to the QoS characteristic value of the lower layer bearer.
  • the second functional entity of the L2 maps the upper layer bearer to the lower layer bearer according to the QoS feature value of the lower layer bearer, including:
  • the second functional entity of the L2 directly maps the upper layer bearer to the lower layer bearer;
  • the QoS characteristic value of the second functional entity of the L2 at the lower layer bearer does not meet the QoS requirement of the upper layer bearer, then modify its QoS characteristic value to meet the QoS requirement of the upper layer bearer, and map the upper layer bearer to the lower layer bearer. on the load; or,
  • the second functional entity of the L2 selects a lower layer bearer according to the QoS parameters of the upper layer bearer, and maps the upper layer bearer to the lower layer bearer.
  • the lower layer bearer includes: a logical channel, a transport channel and/or a physical channel.
  • each of the lower-layer bearers has a data cache unit, a lower-layer bearer carries one or more data packets carried by an upper-layer bearer, and each upper-layer bearer carried on the lower-layer bearer is cached to the lower-layer bearer. in the cache.
  • the serial number of the upper-layer bearer carried on the lower-layer bearer inside the MAC consists of an identifier of the lower-layer bearer and an identifier of the upper-layer bearer inside the lower-layer bearer.
  • the second functional entity of the L2 classifies the upper layer bearers according to QoS parameters to obtain multiple upper layer bearer groups.
  • the QoS characteristic value of the lower layer bearer is determined according to the QoS characteristic value of the upper layer bearer carried by the lower layer bearer and/or the scheduler of the MAC of the L2 is determined according to the statistical characteristic value of the air interface.
  • the data packet is formed into a media access control protocol data unit MAC PDU, and the MAC PDU is sent to L1, including:
  • the data packet is formed into a medium access control protocol data unit MAC PDU, and the MAC PDU is sent to the L1.
  • the data transmission device further includes:
  • the second functional entity of the L2 When performing data reorganization according to the instruction of the scheduler, the second functional entity of the L2 performs MAC PDU reorganization on the upper layer bearer.
  • the MAC PDU carries at least one of the following:
  • the ID of the lower layer bearer The ID of the lower layer bearer, the ID of the upper layer bearer to which the MAC PDU belongs, the identifier N of whether the data on multiple upper layer bearers is included at the same time, the length of the data packet, and the length indicator of the length of the data packet.
  • the second functional entity of the L2 receives data from the L1, processes the data to obtain a data packet, and sends the data packet to the first functional entity of the L3, including:
  • the second functional entity of the L2 receives data from the L1 layer
  • the received data is processed to obtain the MAC PDU
  • this device is a device corresponding to the method shown in FIG. 3 above, and all contents in the above method embodiment are applicable to this embodiment, and the same technical effect can also be achieved.
  • Embodiments of the present disclosure further provide a communication device, including: Layer 3 L3, Layer 2 L2, and Layer 1 L1;
  • the L2 transceiver is used to transmit data packets between the second functional entity of the L2 medium access control MAC and the first functional entity of the Layer 3 L3.
  • the transceiver of L2 receives data packets sent by the first functional entity of Layer 3 L3, processes the data packets and sends them to Layer 1 L1; receives data from L1, processes the data to obtain data packets, and sends the data The packet is sent to the first functional entity of L3.
  • the communication device may be a network-side device or a terminal.
  • the network-side device includes: Layer 3 L3, Layer 2 L2, and Layer 1 L1; L2 receives data packets sent by the first functional entity of L3, and sends the data packets to to L1; sent to the terminal through L1;
  • data is received from the terminal through L1, the data is parsed, a data packet is obtained, and the data packet is sent to the first functional entity of L3.
  • the terminal includes: Layer 3 L3, Layer 2 L2, and Layer 1 L1; L1 of the terminal receives data sent by a device on the network side, parses the data, obtains a data packet, and sends the data packet to the first layer of L3 a functional entity.
  • the L2 of the terminal receives the data packet sent by the first functional entity of the L3, sends the data packet to the L1, and sends the data packet to the network side device through the L1.
  • Embodiments of the present disclosure also provide a communication device, including: a processor, and a memory storing a computer program, the computer program executing the above-described method when executed by the processor. All implementation manners in the foregoing method embodiment are applicable to this embodiment, and the same technical effect can also be achieved.
  • Embodiments of the present disclosure also provide a computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method as described above. All implementation manners in the foregoing method embodiment are applicable to this embodiment, and the same technical effect can also be achieved.
  • the disclosed apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the computer software product is stored in a storage medium, including several
  • the instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk and other mediums that can store program codes.
  • the realization of all or part of the processes in the methods of the above embodiments can be accomplished by controlling the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and the program can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM) and the like.
  • modules, units, and subunits can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSP Device, DSPD) ), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general-purpose processor, controller, microcontroller, microprocessor, in other electronic units or combinations thereof.
  • ASIC Application Specific Integrated Circuits
  • DSP Digital Signal Processor
  • DSP Device Digital Signal Processing Device
  • DSPD Digital Signal Processing Device
  • PLD Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the technologies described in the embodiments of the present disclosure may be implemented through modules (eg, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
  • Software codes may be stored in memory and executed by a processor.
  • the memory can be implemented in the processor or external to the processor.
  • each component or each step can be decomposed and/or recombined.
  • These disaggregations and/or recombinations should be considered equivalents of the present disclosure.
  • the steps of performing the above-mentioned series of processes can naturally be performed in chronological order in the order described, but need not necessarily be performed in chronological order, and some steps can be performed in parallel or independently of each other.
  • Those of ordinary skill in the art can understand all or any steps or components of the method and device of the present disclosure. , software, or a combination thereof, which can be implemented by those of ordinary skill in the art using their basic programming skills after reading the description of the present disclosure.
  • the objects of the present disclosure can also be achieved by running a program or set of programs on any computing device.
  • the computing device may be a known general purpose device. Therefore, the objects of the present disclosure can also be achieved merely by providing a program product containing program code for implementing the method or apparatus. That is, such a program product also constitutes the present disclosure, and a storage medium in which such a program product is stored also constitutes the present disclosure.
  • the storage medium can be any known storage medium or any storage medium developed in the future.
  • each component or each step can be decomposed and/or recombined. These disaggregations and/or recombinations should be considered equivalents of the present disclosure.
  • the steps of executing the above-described series of processes can naturally be executed in chronological order in the order described, but need not necessarily be executed in chronological order. Certain steps may be performed in parallel or independently of each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本公开的实施例提供一种数据的传输方法、装置及设备；数据的传输方法应用于层二L2，所述方法包括：所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输。

Description

数据的传输方法、装置及设备
相关申请的交叉引用
本申请主张在2020年7月7日在中国提交的中国专利申请号No.202010646878.8的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，特别是指一种数据的传输方法、装置及设备。
背景技术
在第三代(3 rd Generation，3G)/第四代(4 th Generation，4G)/第五代(5 th Generation，5G)系统中，处于AS层(终端侧。对于网络侧，为RRC协议层)的只有控制面(Control Plane，CP)，即只有RRC协议层(或者子层)。无线资源控制(Radio Resource Control，RRC)协议层完成无线资源控制功能，没有UP面的数据处理功能。
已有的AS层的L2的包处理功能(Packet Processing：包处理)进行重新设计，新的L2的包处理功能主要是承接上层业务数据的特长，并结合低层空口的信道特长，形成兼顾空口和业务特征的服务质量(Quality of Service，QoS)指标和操作。
5G中的L2数据面功能包括服务数据适应协议(Service Data Adaptation Protocol，SDAP)、分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)、无线链路控制(Radio Link Control，RLC)和MAC等协议功能实体。如38.300协议中的Figure4.4.1-1给出的用户面协议栈。
相关的SDAP/PDCP/RLC/MAC协议在数据包处理中的功能由相关L2的协议进行定义，分别对数据包的处理包括：复用、头压/解压缩、加密/解密、分段、重传等功能。
相关技术中5G无线接入层协议栈的数据处理存在很大的冗余，比如RLC针对分段的数据包的排序功能，PDCP有对所有数据包的排序功能，无论是超可靠和低时延通信(Ultra-Reliable and Low Latency Communications， URLLC)/增强移动宽带(enhanced Mobile Broadband，eMBB)/大规模机器类型通信(massive Machine Type Communication，mMTC)三者类型的业务对时延或者可靠性的要求差距多么大，使用的协议栈功能几乎是一样的(RLC AM或者UM模式)，这种方式无法满足业务的需要。
发明内容
本公开提供了一种数据的传输方法、装置及设备。实现L2层的简化，不再需要对数据进行多层协议的处理。
为解决上述技术问题，本公开的实施例提供如下方案：
一种数据的传输方法，应用于层二L2，所述方法包括：
所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，所述层三L3第一功能实体为接入层AS处理用户面UP数据的功能实体。
可选的，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，包括：
所述L2的媒体访问控制MAC的第二功能实体接收层三L3的第一功能实体发送的数据包，将所述数据包处理后发送给层一L1。可选的，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，包括：
所述L2的第二功能实体从L1接收数据，对所述数据进行处理得到数据包，将所述数据包发送给L3的第一功能实体。
可选的，所述L2的媒体访问控制MAC的第二功能实体接收层三L3层的第一功能实体发送的数据包，将所述数据包处理后发送给层一L1，包括：
所述L2的第二功能实体接收L3的第一功能实体发送的数据包；
所述L2的第二功能实体将所述数据包组建为媒体访问控制MAC协议数据单元(protocol data unit，PDU)，并向L1发送所述MAC PDU。
可选的，数据的传输方法，还包括以下至少一项：
所述L2的第二功能实体按照无线资源控制RRC配置的或者MAC调度器指示的低层承载的QoS流组或者服务质量QoS参数，确定低层承载的QoS 特征值；
所述L2的第二功能实体根据所述低层承载的QoS特征值，将所述上层承载映射到所述低层承载上。
可选的，所述L2的第二功能实体根据所述低层承载的QoS特征值，将所述上层承载映射到所述低层承载上，包括：
所述L2的第二功能实体在所述低层承载的QoS特征值满足上层承载的QoS需求，则将所述上层承载直接映射到所述低层承载上；或者，
所述L2的第二功能实体在所述低层承载的QoS特征值不满足上层承载的QoS需求，则修改其QoS特征值以使满足上层承载的QoS需求，将所述上层承载映射到所述低层承载上；或者，
所述L2的第二功能实体在没有与上层承载的QoS需求匹配的低层承载时，按照上层承载的QoS参数，选择一个低层承载，将所述上层承载映射到所述低层承载上。
可选的，所述低层承载包括：逻辑信道、传输信道和/或物理信道。
可选的，每个所述低层承载上具有一个数据缓存单元，一个低层承载上承载一个或者多个上层承载的数据包，该低层承载上承载的每一个上层承载的数据包都缓存到低层承载的缓存中。
可选的，所述低层承载上承载的上层承载在MAC内部的编号由低层承载的标识和所述上层承载在所述低层承载内部的标识组成。
可选的，数据的传输方法，还包括：将上层承载按照QoS参数进行分类，得到多个上层承载组。
可选的，所述低层承载的QoS特征值，根据所述低层承载承载的上层承载的QoS特征值和/或所述L2的MAC的调度器根据空口的统计特征值确定。
可选的，将所述数据包组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU，包括：
根据所述L2的MAC中的调度器的指示，将所述数据包组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU。
可选的，数据的传输方法还包括：所述L2的第二功能实体在根据所述调度器的指示进行数据重组时，将所述上层承载进行MAC PDU的重新组建。
可选的，所述MAC PDU中携带以下至少一项：
低层承载的标识(Identifier，ID)、该MAC PDU所属的上层承载的ID、是否同时包含了多个上层承载上的数据的标识N、数据包的长度以及数据包长度的长度指示标识。
可选的，所述L2的DP功能实体从L1接收数据，对所述数据进行处理得到数据包，将所述数据包发送给L3的第一功能实体，包括：
所述L2的第二功能实体从L1层接收数据；
根据调度器的指示，对接收的数据进行处理，得到MAC PDU；
对MAC PDU进行解析，得到低层承载的标识、上层承载在低层承载内标识MAC服务数据单元(service data unit，SDU)；
将所述MAC SDU发送给L3的第一功能实体。
本公开的实施例还提供一种数据传输的装置，应用于通信设备，所述通信设备包括层三L3、层二L2以及层一L1；所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，所述层三L3第一功能实体为接入层AS处理用户面UP数据的功能实体。
可选的，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，包括：
所述L2的媒体访问控制MAC的第二功能实体接收层三L3的第一功能实体发送的数据包，将所述数据包处理后发送给层一L1。
可选的，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，包括：
所述L2的第二功能实体从L1接收数据，对所述数据进行处理，得到数据包，将所述数据包发送给L3的第一功能实体。
可选的，所述L2的媒体访问控制MAC的第二功能实体接收层三L3层的第一功能实体发送的数据包，将所述数据包处理后发送给层一L1，包括：
所述L2的第二功能实体接收L3的第一功能实体发送的数据包；
所述L2的第二功能实体将所述数据包，组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU。
可选的，数据的传输装置，还包括：
所述L2的第二功能实体按照无线资源控制RRC配置的的或者MAC调度器指示的低层承载的QoS流组或者服务质量QoS参数，确定低层承载的QoS特征值；
所述L2的第二功能实体根据所述低层承载的QoS特征值，将所述上层承载映射到所述低层承载上。
可选的，所述L2的第二功能实体根据所述低层承载的QoS特征值，将所述上层承载映射到所述低层承载上，包括：
所述L2的第二功能实体在所述低层承载的QoS特征值满足上层承载的QoS需求，则将所述上层承载直接映射到所述低层承载上；或者，
所述L2的第二功能实体在所述低层承载的QoS特征值不满足上层承载的QoS需求，则修改其QoS特征值以使满足上层承载的QoS需求，将所述上层承载映射到所述低层承载上；或者，
所述L2的第二功能实体在没有与上层承载的QoS需求匹配的低层承载时，按照上层承载的QoS参数，选择一个低层承载，将所述上层承载映射到所述低层承载上。
可选的，所述低层承载包括：逻辑信道、传输信道和/或物理信道。
可选的，每个所述低层承载上具有一个数据缓存单元，一个低层承载上承载一个或者多个上层承载的数据包，该低层承载上承载的每一个上层承载的数据包都缓存到低层承载的缓存中。
可选的，所述低层承载上承载的上层承载在MAC内部的编号由低层承载的标识和所述上层承载在所述低层承载内部的标识组成。
可选的，所述L2的第二功能实体将上层承载按照QoS参数进行分类，得到多个上层承载组。
可选的，所述低层承载的QoS特征值，根据所述低层承载承载的上层承载的QoS特征值和/或所述L2的MAC的调度器根据空口的统计特征值确定。
可选的，将所述数据包组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU，包括：
根据所述L2的MAC中的调度器的指示，将所述数据包组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU。
可选的，数据的传输装置，还包括：
所述L2的第二功能实体在根据所述调度器的指示进行数据重组时，将所述上层承载进行MAC PDU的重新组建。
可选的，所述MAC PDU中携带以下至少一项：
低层承载的ID、该MAC PDU所属的上层承载的ID、是否同时包含了多个上层承载上的数据的标识N、数据包的长度以及数据包长度的长度指示标识。
可选的，所述L2的第二功能实体从L1接收数据，对所述数据进行处理得到数据包，将所述数据包发送给L3的第一功能实体，包括：
所述L2的第二功能实体从L1层接收数据；
根据调度器的指示，对接收的数据进行处理，得到MAC PDU；
对MAC PDU进行解析，得到低层承载的标识、上层承载在低层承载内标识MAC服务数据单元MAC SDU；
将所述MAC SDU发送给L3的第一功能实体。
本公开的实施例还提供一种通信设备，包括：层三L3、层二L2以及层一L1；所述L2的收发机，用于通过所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，所述层三L3第一功能实体为接入层AS处理用户面UP数据的功能实体。
本公开的实施例还提供一种通信设备，包括：处理器、存储有计算机程序的存储器，所述计算机程序被处理器运行时，执行如上所述的方法。
本公开的实施例还提供一种计算机可读存储介质，包括指令，当所述指令在计算机运行时，使得计算机执行如上所述的方法。
本公开的上述方案至少包括以下有益效果：
本公开的上述方案，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输。这里，L2通过第二功能实体与L3的第一功能实体之间进行数据包的传输，从而实现了L2可以直接与L3的第一功能实体之间进行数据包的传输，L2不再需要对数据进行多层协议的处理，实现L2的简化。进一步的，所述L2的媒体访问控制MAC的第二功能实体接收L3的第一功能实体发送的数据包，将所述数据包发送给L1；所 述L2的第二功能实体从L1接收数据，对所述数据进行处理，得到数据包，将所述数据包发送给L3的第一功能实体；这里，L2直接将数据包发送给L1层，以及直接将L1层的数据发送给L3层，从而实现L2层的简化，不再需要对数据进行多层协议的处理。
附图说明
图1为AS层协议栈功能示意图；
图2为L2数据面功能实体的协议功能实体示意图；
图3为本公开的数据的传输方法的流程示意图；
图4为MAC的DP功能实体的总体示意图；
图5为MAC的DP功能实体数据处理的示意图；
图6为MAC PDU格式示意图；
图7为网络和UE之间RRC建立和重配置的流程；
图8为网络和UE内部RRC分别对L3 UP和MAC功能实体的配置流程。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
面向下一代移动通信的极简网络(Lite Network)的设计目标，提出了在L3引入用户面功能(User Plane)进行数据处理。
如图1所示，在接入层(Access Stratum，AS)的层3(Layer 3，L3，5G系统中AS层的RRC层称之为3层协议)中引入用户面(User Plane，UP)功能。
对于RRC，除去传统相关技术中的无线资源管理功能外，L3的UP功能负责处理数据包在AS层的存储、转发，并且在数据传输过程中，通过L2上报的数据空口收发情况，即数据包发送的正确与否，L3 UP完成数据的支撑处理功能。对于媒体访问控制(medium access control，MAC)，增加对L2的 包处理功能的实时调度和控制功能。
AS层的L3的UP具有对互联网协议(Internet protocol，IP)包的第一次或者多于一次的发送功能。随着L3的UP功能的引入，L2已有的数据处理功能需要进行重新定义。
本公开的实施例中，L3的用户面(User Plane，UP)功能实体把数据包发送给L2的MAC功能实体。MAC功能实体接收到数据包后，调度并完成MAC PDU的组建，发送到空口。
通过L3的UP功能实体为L2提供数据服务功能，包括按照L2的要求提供数据长度或者数量、数据格式、数据的备份和数据重传服务等。
L2基于L3 UP的功能，给L3 UP提供数据收发指示、数据重传指示、数据备份跟新指示等各种控制信息，实现L3 UP层对数据包的精准分配。
AS层包括层1(Layer 1，L1，物理层)、层2(Layer 2，L2)和层3(Layer 3，L3)。
如图3所示，本公开的实施例提供一种数据的传输方法，应用于层二L2，所述方法包括：
步骤30，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输。这里，L2通过第二功能实体与L3的第一功能实体之间进行数据包的传输，从而实现了L2可以直接与L3的第一功能实体之间进行数据包的传输，L2不再需要对数据进行多层协议的处理，实现L2的简化。
进一步的，该步骤30可以包括：
步骤31，所述L2的媒体访问控制MAC的第二功能实体接收层三L3的第一功能实体发送的数据包，将所述数据包处理后发送给层一L1；这里的数据包可以包括控制数据包(例如控制PDU和数据数据包(例如数据PDU)；这里，L3的UP功能实体向L2发送数据包时，可以通过IP流发送，也可以通过逻辑信道或者无线承载RB发送；这里的第一功能实体可以是类似于用户面UP功能实体，具有数据的接收和发送能力；这里的第二功能实体可以是MAC的数据处理功能(Data Process，DP)实体，可以接收L3发送的数据包，也可以接收L1发送的数据包，具有数据的接收和发送能力；
步骤32，所述L2的第二功能实体从L1接收数据，对所述数据进行处理得到数据包，将所述数据包发送给L3的第一功能实体。
该实施例中，L3的第一功能实体把数据包通过IP流发送给MAC层的数据处理功能DP功能实体，MAC层的DP功能实体同样可以把从L1接收到的数据包进行解析后得到的数据包通过IP流(IP Flow)发送给L3的第一功能实体。
如图4所示，本公开的实施例中，MAC基本功能包括DP功能实体，调度器(Scheduler)、混合自动重传请求(Hybrid automatic repeat request，HARQ)功能实体以及其它的功能实体。
本公开的一可选的实施例中，步骤31可以包括：
所述L2的第二功能实体接收L3的第一功能实体发送的数据包；
所述L2的第二功能实体将所述数据包，组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU。
本公开的一可选的实施例中，上述方法还可以包括：
所述L2的第二功能实体按照无线资源控制RRC配置的的或者MAC调度器指示的低层承载的QoS流组或者服务质量QoS参数(配置的即为多个IP流的QoS特征值)，确定低层承载的QoS特征值；
所述L2的第二功能实体根据所述低层承载的QoS特征值，将所述上层承载映射到所述低层承载上。
该实施例中，上层承载可以是IP流或者其它类型的承载；DP功能实体以RRC配置的信令参数为基本QoS特征值和IP流到低层承载映射的基本规则，进行IP流的分组(IP流Group)，并确定IP流组或者低层承载的QoS特征值(QoS参数)，以及确定每个IP流和低层承载，这里的低层承载可以是逻辑信道(Logical Channel)，也可以是物理信道或者其它低层的载体)的映射关系；
DP在系统运行过程中，DP根据调度器的指示更新IP流或者IP流组的QoS参数(特征值)，从而调整和低层承载的映射关系。MAC的DP把每个IP流上的数据包缓存或者复用到相应的低层承载上，并组建MAC PDU。当调度器指示DP功能模块进行数据重组时，DP功能模块按照调度器的指示完 成MAC PDU的重新组建，并发送给HARQ功能实体。
如图5所示，DP功能实体主要包括QoS Control(QoS控制功能)、缓存和数据包组建和拆解功能组成。
QoS控制实体根据RRC信令配置的每个QoS流的QoS参数(特征值)构成QoS流组，并完成QoS流组或者每个低层承载的QoS参数(特征值)设置。
本公开的一可选的实施例中，所述L2的第二功能实体根据所述低层承载的QoS特征值，将所述上层承载映射到所述低层承载上，包括：
所述L2的第二功能实体在所述低层承载的QoS特征值满足上层承载的QoS需求，则将所述上层承载直接映射到所述低层承载上；或者，
所述L2的第二功能实体在所述低层承载的QoS特征值不满足上层承载的QoS需求，则修改其QoS特征值以使满足上层承载的QoS需求，将所述上层承载映射到所述低层承载上；或者，
所述L2的第二功能实体在没有与上层承载的QoS需求匹配的低层承载时，按照上层承载的QoS参数，选择一个低层承载，将所述上层承载映射到所述低层承载上。也就是说，选择一个低层承载，把上层承载的QoS参数能力赋值给该低层承载，将所述上层承载映射到所述低层承载上。
这里的所述低层承载可以包括：逻辑信道、传输信道和/或物理信道。
其中，每个所述低层承载上具有一个数据缓存单元，一个低层承载上承载一个或者多个上层承载的数据包，该低层承载上承载的每一个上层承载的数据包都缓存到低层承载的缓存中。
该实施例中，按照低层承载为单位建立数据缓存(Data Buffer)。每一个低层承载有一个数据缓存，每个低层承载上承载一个或者多个IP流的数据包，该低层承载上承载的每一个IP流的数据包都缓存到低层承载的缓存中；DP功能实体在发送方向上按照RRC和调度器QoS控制信令和控制指示完成MAC层接收L3 UP功能实体的数据包并缓存到相应的缓存中，按照MAC层调度器的指示，组建发送到空口的MAC PDU。
所述低层承载上承载的上层承载在MAC内部的编号由低层承载的标识和所述上层承载在所述低层承载内部的标识组成。该实施例中，承载到一个 低层承载上的IP流使用低层承载内的编号。一个IP流的寻址方式为：Lower Bearer ID+IP Flow_Offset_ID的方式，其中Lower Bearer ID为低层承载ID，IP Flow_Offset_ID为该IP流在低层承载内的ID。如图3所示，每个低层承载内的IP流的索引值都为0为起始值，比如低层承载上承载了4个IP流，则这4个IP流的ID为0，1，2，3。
本公开的一可选的实施例中，上述方法还可以包括：
将上层承载按照QoS参数进行分类，得到多个上层承载组。
可选地，可以按照所述低层承载上承载的IP流的QoS需求，分成多个IP流组，其中，IP流组的QoS需求，根据该IP流组中的每一个IP流的QoS需求得到；
将同一个IP流组的所有QoS流的数据缓存到所述低层承载的一个缓存中。
该实施例中，对数据包的管理上，可以把低层承载上承载的IP流按照每个IP流的QoS需求(指标参数)分成若干个IP流组，每个IP流组的QoS需求(指标参数)根据该IP流组中的每一个IP流的QoS需求得到，比如通过线性拟合，或者取平均值，或者取最大值等方法。低层承载的数据缓存可以按照IP流组进行划分，同一个IP流组的所有QoS流的数据一起缓存。
本公开的一可选的实施例中，所述低层承载的QoS特征值，根据所述低层承载承载的IP流的QoS特征值和所述L2的MAC的调度器根据空口的统计特征值确定。
这里，具体的，低层承载的QoS特征值有其承载的上层承载的QoS特征值和调度器的根据空口的统计特征值(长时间的空口数据收发特征、小区负载统计特征值)共同决定，可以取其一，也可以二者进行数学拟合得到(使用归一化的计算引子进行线性拟合)。
本公开的一可选的实施例中，将所述数据包，组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU，包括：
根据所述L2的MAC中的调度器的指示，将所述数据包，组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU。
本公开的一可选的实施例中，数据的传输方法还可以包括：所述L2的第二功能实体在根据所述调度器的指示进行数据重组时，将所述上层承载进行 MAC PDU的重新组建，进一步的，可以将重新组建的MAC PDU发送给所述L2的MAC的混合自动重传HARQ功能实体。
本公开的一可选的实施例中，所述MAC PDU中携带以下至少一项：低层承载的ID、该MAC PDU所属的上层承载的ID、是否同时包含了多个上层承载上的数据的标识N、数据包的长度以及数据包长度的长度指示标识。
本公开的一可选的实施例中，所述L2的第二功能实体从L1接收数据，对所述数据进行处理得到数据包，将所述数据包发送给L3的第一功能实体，包括：
所述L2的第二功能实体从L1层接收数据；
根据调度器的指示，对接收的数据进行处理，得到MAC PDU；
对MAC PDU进行解析，得到低层承载的标识、上层承载在低层承载内标识MAC服务数据单元MAC SDU；
将所述MAC SDU发送给L3的第一功能实体。
上述实施例中，当调度器需要动态修改QoS流组或者每个低层承载的QoS参数(特征值)时，调度器把空口数据收发的信息、用户的空口信道质量、小区的负载信息、调度器调度用户的概率或者次数等发送给QoS控制，QoS控制根据该信息更新QoS流组或者低层承载QoS参数(特征值)；或者根据新的QoS参数(特征值)，实现QoS流组映射到新的低层承载上。
数据包组建和拆解功能(Assembling&disassembling MAC PDU)负责组建MAC PDU，重组MAC PDU，解析MAC PDU得到IP包。
如图6所示，在MAC PDU中，需要携带低层承载的ID、该数据所属的IP流的ID、是否同时包含了多个IP流上的数据的标识N，数据包的长度，数据包长度的长度指示标识，其它信息，其中：
承载ID：低层承载ID为承载该MAC PDU的承载的ID，长度为一个字节或者几个比特。
IP流ID：该MAC PDU本次包含的MAC SDU(IP包)所属的IP流ID，长度为整字节或者几个比特。
N：该MAC PDU中包含的数据是否来自与多个IP流，取值为“是”，和“不是”。比如0：不是，表示只有一个IP流；1：是，表示多于一个IP流。 该字段长度为一个比特。
F：数据包长度的长度指示标识；数据包长度两种选择为一个字节和两个字节两种选择。比如0：表示一个字节长度；1：两个字节长度。该字段长度为1个比特。
L：数据包的长度域，表示数据包的字节长度。该字段长度为8个比特或者16个比特。
N为一个比特，低层承载ID为6比特，IP流ID为7比特，F为1比特。
当一个IP流同时有多个数据包要发送时，按照单独的数据包填写IP流ID。比如IP Flow#0要发送三个独立的数据包，则同时存在三个IP Flow#0和对应的数据长度域。
接收方收到MAC PDU后：从第一个字节中得到承载ID和N字段。通过该LC ID能够判断是否为数据包。如果为数据包，则根据N字段判断是否存在多个IP流的数据包。
如果只有一个IP流的数据包，则读取第二字节的F字段和IP流ID字段。根据F字段，判断数据包的长度域L的长度，如果L为8比特长度，则读取第三个字节为数据包长度，第四个字节及以后为数据包。如果L为16比特长度，则读取第三、第四个字节为数据包长度，第五个字节及以后为数据包。
如果有多个IP流的数据包，按照F+IP Flow ID+L组合得到所有的IP流信息，根据每个IP流信息，得到对应的数据包。
如图6所示，因为IP流ID长度为7比特，则一个低层承载上最多可以承载128个IP流。发送方按照上述接收方的解析方式组建MAC PDU。
如图7所示，为本公开的上述实施例中，RRC信令配置L3 UP和MAC对IP流ID的映射关系的示意图。
如图8所示，为本公开的上述实施例中，网络和UE内部RRC分别对L3 UP和MAC功能实体的配置流程；
在RRC重配置过程完成IP流和逻辑信道的映射关系配置。
网络侧的RRC产生的RRC Reconfiguration(RRC重配置)时：
低层承载以逻辑信道为例子进行表述。
对于逻辑信道(logical channel，LC)的配置，新增LC和IP流的映射关系：
该LC的QoS参数；
该LC上承载的IP流的数目；
该LC承载的IP流的列表：
{
每个IP流的ID；(该ID为IP流在LC内部的ID，即一个LC上承载的所有IP流统一编号)
每个IP流对应的L3 UP的IP流的ID或者索引；(LC上承载的IP流和L3 UP的IP流的映射关系，即为LC内部的IP流和L3全局的IP流的映射关系)
每个IP流的QoS参数；
}；
对于每个LC上承载的最大IP流的数目，按照图4中定义的IP流ID为7比特，所以，最大数目为128，IP流ID的取值范围为：0～127。
UE侧的RRC接收到到网络侧的RRC配置的该信令后，配置UE侧的MAC和L3 UP。
图8中，网络侧和UE侧的RRC分别配置各自的MAC和L3 UP。
把LC配置中新增LC和IP流的映射关系分别配置给MAC和L3 UP：
配置给MAC的内容为：上述信令中上述的全部内容，除去“每个IP流对应的L3 UP的IP流的ID或者索引”部分，该部分在MAC层为可选内容，可以配置也可以不配置。
接收到该命令后，MAC层根据LC的QoS参数和IP流的QoS参数，结合调度的空口状态，对IP流进行分类产生相应IP流组，并对LC和IP流或者IP流组的QoS参数进行完善，分别得到LG和IP流(组)在MAC调度时使用的QoS参数。
配置给L3 UP的内容为：上述信令中上述的全部内容中，
该LC上承载的IP流的数目；
该LC承载的IP流的列表：
{
每个IP流的ID；(该ID为IP流在LC内部的ID，即一个LC上承载的所有IP流统一编号)
每个IP流对应的L3 UP的IP流的ID或者索引；(LC上承载的IP流和L3 UP的IP流的映射关系，即为LC内部的IP流和L3全局的IP流的映射关系)
}；
对于每个LC上承载的最大IP流的数目，按照图4中定义的IP流ID为7比特，所以，最大数目为128，IP流ID的取值范围为：0～127。
除去上述内容，对于“该LC的QoS参数；”和“每个IP流的QoS参数；”两部分，该部分在L3 UP为可选内容，可以配置也可以不配置。
本公开的上述实施例中，L3 UP功能实体接收到上层发送的IP包：
通过承载该IP包的IP流的ID或者索引，根据RRC配置，得到该IP流对应的LC ID以及LC内部的流ID。
把IP包附件上LC ID和LC内部的流ID，发送给MAC层。
MAC的DP功能实体接收到数据包后，根据其携带的LC ID和LC内部的流ID，缓存到LC的数据缓存(Buffer)中，并得到相应的QoS参数。
MAC的调度器调到完毕后，通知DP组建相应的MAC PDU，并按照调度器调到结果的指示，发送到L1。
当重传的MAC PDU需要重组时，HARQ反馈重组的配置信息给调度器，调度器指示DP进行MAC PDU重组。
MAC从L1接收到数据后，根据调度器的指示信息，得到MAC PDU。从MAC PDU中得到LCID和QoS流ID。根据这两个ID把解析得到的IP包发送到L3 UP相关的接收模块上，L3UP处理完毕后，通过IP流发送给上层。
本公开的上述实施例中，IP流直接映射到逻辑信道上；采用全局IP流(长ID)和LC内IP流(短ID)的方式，降低MAC PDU的开销；可以维持5G MAC中以逻辑信道组(Logical Channel Group，LCG)为基本单位的架构方式不变。简化了L2内部数据处理的节点，5G中有SDAP/PDCP/RLC，涉及到QoS流到数据无线承载(Data Radio Bearer，DRB)的映射，DRB到 逻辑信道的映射；实现了MAC调度器对链路的实时控制和RRC的近实时控制的结合；相对于5G，减少了SDAP/PDCP/RLC的头开销，降低了系统开销。
本公开的实施例还提供一种数据传输的装置，应用于通信设备，所述通信设备包括层三L3、层二L2以及层一L1；所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输。
可选的，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输包括：
所述L2的媒体访问控制MAC的第二功能实体接收层三L3的第一功能实体发送的数据包，将所述数据包处理后发送给层一L1。
可选的，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，包括：
所述L2的第二功能实体接收L3的第一功能实体发送的数据包；
所述L2的第二功能实体将所述数据包，组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU。
可选的，数据的传输装置还包括：所述L2的第二功能实体按照无线资源控制RRC配置的的或者MAC调度器指示的低层承载的QoS流组或者服务质量QoS参数，确定低层承载的QoS特征值；
所述L2的第二功能实体根据所述低层承载的QoS特征值，将所述上层承载映射到所述低层承载上。
可选的，所述L2的第二功能实体根据所述低层承载的QoS特征值，将所述上层承载映射到所述低层承载上，包括：
所述L2的第二功能实体在所述低层承载的QoS特征值满足上层承载的QoS需求，则将所述上层承载直接映射到所述低层承载上；或者，
所述L2的第二功能实体在所述低层承载的QoS特征值不满足上层承载的QoS需求，则修改其QoS特征值以使满足上层承载的QoS需求，将所述上层承载映射到所述低层承载上；或者，
所述L2的第二功能实体在没有与上层承载的QoS需求匹配的低层承载时，按照上层承载的QoS参数，选择一个低层承载，将所述上层承载映射到所述低层承载上。
可选的，所述低层承载包括：逻辑信道、传输信道和/或物理信道。
可选的，每个所述低层承载上具有一个数据缓存单元，一个低层承载上承载一个或者多个上层承载的数据包，该低层承载上承载的每一个上层承载的数据包都缓存到低层承载的缓存中。
可选的，所述低层承载上承载的上层承载在MAC内部的编号由低层承载的标识和所述上层承载在所述低层承载内部的标识组成。
可选的，所述L2的第二功能实体将上层承载按照QoS参数进行分类，得到多个上层承载组。
可选的，所述低层承载的QoS特征值，根据所述低层承载承载的上层承载的QoS特征值和/或所述L2的MAC的调度器根据空口的统计特征值确定。
可选的，将所述数据包组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU，包括：
根据所述L2的MAC中的调度器的指示，将所述数据包组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU。
可选的，数据的传输装置，还包括：
所述L2的第二功能实体在根据所述调度器的指示进行数据重组时，将所述上层承载进行MAC PDU的重新组建。
可选的，所述MAC PDU中携带以下至少一项：
低层承载的ID、该MAC PDU所属的上层承载的ID、是否同时包含了多个上层承载上的数据的标识N、数据包的长度以及数据包长度的长度指示标识。
可选的，所述L2的第二功能实体从L1接收数据，对所述数据进行处理得到数据包，将所述数据包发送给L3的第一功能实体，包括：
所述L2的第二功能实体从L1层接收数据；
根据调度器的指示，对接收的数据进行处理，得到MAC PDU；
对MAC PDU进行解析，得到低层承载的标识、上层承载在低层承载内标识MAC服务数据单元MAC SDU；
将所述MAC SDU发送给L3的第一功能实体。
需要说明的是，该装置是与上述图3所示方法对应的装置，上述方法实 施例中的所有内容均适用于该实施例中，也能达到相同的技术效果。
本公开的实施例还提供一种通信设备，包括：层三L3、层二L2以及层一L1；
L2的收发机，用于通过所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输。
L2的收发机接收层三L3的第一功能实体发送的数据包，将所述数据包处理后发送给层一L1；从L1接收数据，对所述数据进行处理得到数据包，将所述数据包发送给L3的第一功能实体。
该通信设备可以是网络侧设备，也可以是终端，网络侧设备包括：层三L3、层二L2以及层一L1；L2接收L3的第一功能实体发送的数据包，将所述数据包发送给L1；通过L1发送给终端；
相应的，通过L1从终端接收数据，对所述数据进行解析，得到数据包，将所述数据包发送给L3的第一功能实体。
该终端包括：层三L3、层二L2以及层一L1；终端的L1接收到网络侧的设备发送的数据，对所述数据进行解析，得到数据包，将所述数据包发送给L3的第一功能实体。
相应的，终端的L2接收L3的第一功能实体发送的数据包，将所述数据包发送给L1，通过L1发送给网络侧设备。
需要说明的是，上述方法实施例中的所有实现方式均适用于该通信设备的实施例中，也能达到相同的技术效果。
本公开的实施例还提供一种通信设备，包括：处理器、存储有计算机程序的存储器，所述计算机程序被处理器运行时，执行如上所述的方法。上述方法实施例中的所有实现方式均适用于该实施例中，也能达到相同的技术效果。
本公开的实施例还提供一种计算机可读存储介质，包括指令，当所述指令在计算机运行时，使得计算机执行如上所述的方法。上述方法实施例中的所有实现方式均适用于该实施例中，也能达到相同的技术效果。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结 合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本公开所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程， 是可以通过计算机程序来控制相关的硬件来完成，所述的程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储器(Read-Only Memory，ROM)或随机存取存储器(Random Access Memory，RAM)等。
可以理解的是，本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，模块、单元、子单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processor，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
此外，需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行，某些步骤可以并行或彼此独立地执行。对本领域的普通技术人员而言，能够理解本公开的方法和装置的全部或者任何步骤或者部件，可以在任何计算装置(包括处理器、存储介质等)或者计算装置的网络中，以硬件、固件、软件或者它们的组合加以实现，这是本领域普通技术人员在阅读了本公开的说明的情况下运用他们的基本编程技能就能实现的。
因此，本公开的目的还可以通过在任何计算装置上运行一个程序或者一组程序来实现。所述计算装置可以是公知的通用装置。因此，本公开的目的也可以仅仅通过提供包含实现所述方法或者装置的程序代码的程序产品来实现。也就是说，这样的程序产品也构成本公开，并且存储有这样的程序产品的存储介质也构成本公开。显然，所述存储介质可以是任何公知的存储介 质或者将来所开发出来的任何存储介质。还需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
以上所述是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (19)

  1. 一种数据的传输方法，应用于层二L2，包括：
    所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，所述层三L3第一功能实体为接入层AS处理用户面UP数据的功能实体。
  2. 根据权利要求1所述的数据的传输方法，其中，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，包括：
    所述L2的媒体访问控制MAC的第二功能实体接收层三L3的第一功能实体发送的数据包，将所述数据包处理后发送给层一L1。
  3. 根据权利要求1所述的数据的传输方法，其中，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，包括：
    所述L2的第二功能实体从L1接收数据，对所述数据进行处理得到数据包，将所述数据包发送给L3的第一功能实体。
  4. 根据权利要求1所述的数据的传输方法，其中，所述L2的媒体访问控制MAC的第二功能实体接收层三L3层的第一功能实体发送的数据包，将所述数据包处理后发送给层一L1，包括：
    所述L2的第二功能实体接收L3的第一功能实体发送的数据包；
    所述L2的第二功能实体将所述数据包组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU。
  5. 根据权利要求4所述的数据的传输方法，还包括以下至少一项：
    所述L2的第二功能实体按照无线资源控制RRC配置的或者MAC调度器指示的低层承载的服务质量QoS流组或者QoS参数，确定低层承载的QoS特征值；
    所述L2的第二功能实体根据所述低层承载的QoS特征值，将所述上层承载映射到所述低层承载上。
  6. 根据权利要求5所述的数据的传输方法，其中，所述L2的第二功能 实体根据所述低层承载的QoS特征值，将所述上层承载映射到所述低层承载上，包括：
    所述L2的第二功能实体在所述低层承载的QoS特征值满足上层承载的QoS需求，则将所述上层承载直接映射到所述低层承载上；或者，
    所述L2的第二功能实体在所述低层承载的QoS特征值不满足上层承载的QoS需求，则修改其QoS特征值以使满足上层承载的QoS需求，将所述上层承载映射到所述低层承载上；或者，
    所述L2的第二功能实体在没有与上层承载的QoS需求匹配的低层承载时，按照上层承载的QoS参数，选择一个低层承载，将所述上层承载映射到所述低层承载上。
  7. 根据权利要求5所述的数据的传输方法，其中，所述低层承载包括：逻辑信道、传输信道和/或物理信道。
  8. 根据权利要求5所述的数据的传输方法，其中，每个所述低层承载上具有一个数据缓存单元，一个低层承载上承载一个或者多个上层承载的数据包，该低层承载上承载的每一个上层承载的数据包都缓存到低层承载的缓存中。
  9. 根据权利要求5所述的数据的传输方法，其中，所述低层承载上承载的上层承载在MAC内部的编号由低层承载的标识和所述上层承载在所述低层承载内部的标识组成。
  10. 根据权利要求5所述的数据的传输方法，还包括：
    将上层承载按照QoS参数进行分类，得到多个上层承载组。
  11. 根据权利要求3所述的数据的传输方法，其中，所述低层承载的QoS特征值，根据所述低层承载承载的上层承载的QoS特征值和/或所述L2的MAC的调度器根据空口的统计特征值确定。
  12. 根据权利要求2所述的数据的传输方法，其中，将所述数据包组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU，包括：
    根据所述L2的MAC中的调度器的指示，将所述数据包组建为媒体访问控制协议数据单元MAC PDU，并向L1发送所述MAC PDU。
  13. 根据权利要求10所述的数据的传输方法，还包括：
    所述L2的第二功能实体在根据所述调度器的指示进行数据重组时，将所述上层承载进行MAC PDU的重新组建。
  14. 根据权利要求10或11所述的数据的传输方法，其中，所述MAC PDU中携带以下至少一项：
    低层承载的ID、该MAC PDU所属的上层承载的ID、是否同时包含了多个上层承载上的数据的标识N、数据包的长度以及数据包长度的长度指示标识。
  15. 根据权利要求1所述的数据的传输方法，其中，所述L2的第二功能实体从L1接收数据，对所述数据进行处理得到数据包，将所述数据包发送给L3的第一功能实体，包括：
    所述L2的第二功能实体从L1层接收数据；
    根据调度器的指示，对接收的数据进行处理，得到MAC PDU；
    对MAC PDU进行解析，得到低层承载的标识、上层承载在低层承载内标识MAC服务数据单元MAC SDU；
    将所述MAC SDU发送给L3的第一功能实体。
  16. 一种数据传输的装置，应用于通信设备，所述通信设备包括层三L3、层二L2以及层一L1；其中，所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，所述层三L3第一功能实体为接入层AS处理用户面UP数据的功能实体。
  17. 一种通信设备，包括：层三L3、层二L2以及层一L1；其中，
    所述L2的收发机，用于通过所述L2的媒体访问控制MAC的第二功能实体与层三L3的第一功能实体之间进行数据包的传输，所述层三L3第一功能实体为接入层AS处理用户面UP数据的功能实体。
  18. 一种通信设备，包括：处理器、存储有计算机程序的存储器，所述计算机程序被所述处理器运行时，执行如权利要求1至15中任一项所述的方法。
  19. 一种计算机可读存储介质，包括指令，当所述指令在计算机运行时，使得所述计算机执行如权利要求1至15中任一项所述的方法。
PCT/CN2021/104920 2020-07-07 2021-07-07 数据的传输方法、装置及设备 WO2022007829A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21836899.1A EP4181622A1 (en) 2020-07-07 2021-07-07 Data transmission method, apparatus, and device
US18/013,614 US20230292178A1 (en) 2020-07-07 2021-07-07 Data transmission method, apparatus, and device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010646878.8 2020-07-07
CN202010646878.8A CN113923717B (zh) 2020-07-07 2020-07-07 一种数据的传输方法、装置及设备

Publications (1)

Publication Number Publication Date
WO2022007829A1 true WO2022007829A1 (zh) 2022-01-13

Family

ID=79231383

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/104920 WO2022007829A1 (zh) 2020-07-07 2021-07-07 数据的传输方法、装置及设备

Country Status (4)

Country Link
US (1) US20230292178A1 (zh)
EP (1) EP4181622A1 (zh)
CN (1) CN113923717B (zh)
WO (1) WO2022007829A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023138580A1 (zh) * 2022-01-18 2023-07-27 中国移动通信有限公司研究院 Mac pdu发送方法、接收方法及通信设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102868643A (zh) * 2012-08-31 2013-01-09 苏州简约纳电子有限公司 一种lte数据面软件架构
CN103716881A (zh) * 2012-10-08 2014-04-09 华为技术有限公司 空口信息处理系统、方法及设备
CN104010277A (zh) * 2013-02-26 2014-08-27 成都鼎桥通信技术有限公司 集群通信方法、lte网络设备和集群通信系统
US20170257866A1 (en) * 2016-03-01 2017-09-07 Wipro Limited Methods and Systems for Radio Carriers Management in a Wireless Broadband Network
CN107359968A (zh) * 2016-05-10 2017-11-17 电信科学技术研究院 一种单层序列号的数据传输方法及装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6654363B1 (en) * 1999-12-28 2003-11-25 Nortel Networks Limited IP QOS adaptation and management system and method
EP2725825B1 (en) * 2011-07-26 2018-04-11 Huawei Technologies Co., Ltd. Wireless local area network cooperated data transmission method, device and system
WO2019175805A1 (en) * 2018-03-16 2019-09-19 Telefonaktiebolaget Lm Ericsson (Publ) User plane qos bearer control method for 5g fixed access

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102868643A (zh) * 2012-08-31 2013-01-09 苏州简约纳电子有限公司 一种lte数据面软件架构
CN103716881A (zh) * 2012-10-08 2014-04-09 华为技术有限公司 空口信息处理系统、方法及设备
CN104010277A (zh) * 2013-02-26 2014-08-27 成都鼎桥通信技术有限公司 集群通信方法、lte网络设备和集群通信系统
US20170257866A1 (en) * 2016-03-01 2017-09-07 Wipro Limited Methods and Systems for Radio Carriers Management in a Wireless Broadband Network
CN107359968A (zh) * 2016-05-10 2017-11-17 电信科学技术研究院 一种单层序列号的数据传输方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "Architecture for integrated access and backhaul", 3GPP DRAFT; R2-1801022 - ARCHITECTURE FOR INTEGRATED ACCESS AND BACKHAUL, vol. RAN WG2, 12 January 2018 (2018-01-12), Vancouver, Canada, pages 1 - 9, XP051386522 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023138580A1 (zh) * 2022-01-18 2023-07-27 中国移动通信有限公司研究院 Mac pdu发送方法、接收方法及通信设备

Also Published As

Publication number Publication date
CN113923717B (zh) 2024-05-31
CN113923717A (zh) 2022-01-11
EP4181622A1 (en) 2023-05-17
US20230292178A1 (en) 2023-09-14

Similar Documents

Publication Publication Date Title
US10721754B2 (en) Data transmission method and apparatus
US7688857B2 (en) Data transmission method using packet aggregation
AU2006229508B2 (en) Method of generating lower layer data block in wireless mobile communication system
US7839892B2 (en) Data link layer protocol unit
US9240974B2 (en) Wireless communication method, sending device and receiving device
JP2002271366A (ja) パケット伝送方法及びシステム、並びにパケット送信装置、受信装置、及び送受信装置
US20050201353A1 (en) Optimized radio bearer configuration for voice over IP
CN102316516B (zh) 一种lte上行数据传输结构构建方法
JP2008517551A (ja) 移動通信システムにおけるアップリンクデータ伝送のための端末状態情報のシグナリング方法及び装置
WO2015006896A1 (zh) 数据处理装置和方法
WO2021232568A1 (zh) 无线局域网收发数据的方法、终端和系统及网络接入设备
US8654858B2 (en) Methods and apparatus for differential encoding
WO2005117395A1 (fr) Procede de traitement des donnees de l'interface utilisateur
JP2013153514A (ja) 通信システムにおけるパケットの分割および連結をシグナリングする方法および装置
WO2019149248A1 (zh) 通信的方法和装置
WO2018027674A1 (zh) 传输状态报告装置、方法以及通信系统
WO2019101054A1 (zh) 聚合速率控制方法、设备以及系统
CN108235379A (zh) 一种数据传输的方法及设备
WO2022007829A1 (zh) 数据的传输方法、装置及设备
KR20080018055A (ko) 패킷 데이터 송수신 방법 및 장치
KR100625244B1 (ko) 휴대 인터넷 시스템의 기지국장치 및 데이터 트래픽 처리방법
WO2023045815A1 (zh) 传输方法、电子设备及计算机可读存储介质
WO2023231599A1 (zh) 一种用户数据处理方法和装置
WO2023125804A1 (zh) 服务质量流的配置信息及数据的传输方法及设备
WO2022068911A1 (zh) 一种数据的传输方法、装置及设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21836899

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2021836899

Country of ref document: EP

Effective date: 20230207