WO2020087457A1 - Procédé de transmission de données et terminal - Google Patents

Procédé de transmission de données et terminal Download PDF

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Publication number
WO2020087457A1
WO2020087457A1 PCT/CN2018/113482 CN2018113482W WO2020087457A1 WO 2020087457 A1 WO2020087457 A1 WO 2020087457A1 CN 2018113482 W CN2018113482 W CN 2018113482W WO 2020087457 A1 WO2020087457 A1 WO 2020087457A1
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WO
WIPO (PCT)
Prior art keywords
network device
access network
data packet
pdcp entity
terminal
Prior art date
Application number
PCT/CN2018/113482
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English (en)
Chinese (zh)
Inventor
卢前溪
尤心
Original Assignee
Oppo广东移动通信有限公司
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 Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201880096335.4A priority Critical patent/CN112544104B/zh
Priority to PCT/CN2018/113482 priority patent/WO2020087457A1/fr
Publication of WO2020087457A1 publication Critical patent/WO2020087457A1/fr

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    • 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]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • the invention relates to wireless communication technology, in particular to a data transmission method and terminal.
  • the terminal and the access network device maintain a set of protocol stacks at the same time, and also correspond to only one Packet Data Convergence Protocol (PDCP) entity.
  • the terminal either maintains only the protocol stack with the source access network device and performs data transmission with the source access network device, or only maintains the protocol stack with the target access network device and performs data transmission with the target access network device.
  • PDCP Packet Data Convergence Protocol
  • NR New Radio
  • eMBB enhanced Make-before-break
  • the terminal can simultaneously maintain the protocol stacks with the source access network device and the target access network device, respectively, and correspond to different PDCP entities.
  • Various aspects of the present invention provide a data transmission method and terminal for implementing data transmission in an eMBB-based switching mode.
  • An aspect of the present invention provides a data transmission method, including:
  • the terminal uses the first PDCP entity of the terminal, the first PDCP entity of the first access network device, or the first PDCP entity of the first access network device and the second The second PDCP entity of the access network device performs data transmission;
  • the first PDCP entity of the terminal is one of the two PDCP entities of the terminal;
  • the first PDCP entity of the terminal and the first PDCP entity of the first access network device correspond to a first protocol stack
  • the second PDCP entity of the terminal and the second PDCP entity of the second access network device Corresponding to the second protocol stack.
  • Another aspect of the present invention provides a terminal, including:
  • the transmission unit is configured to use the first PDCP entity of the terminal, the first PDCP entity of the first access network device or the first PDCP entity of the first access network device during the handover process and The second PDCP entity of the second access network device performs data transmission;
  • the first PDCP entity of the terminal is one of the two PDCP entities of the terminal;
  • the first PDCP entity of the terminal and the first PDCP entity of the first access network device correspond to a first protocol stack
  • the second PDCP entity of the terminal and the second PDCP entity of the second access network device Corresponding to the second protocol stack.
  • the terminal can simultaneously maintain the protocol stacks with the source access network device and the target access network device, respectively, and correspond to different PDCP entities, namely the first A PDCP entity and a second PDCP entity may use the first PDCP entity of the terminal, the first PDCP entity of the first access network device or the first PDCP entity of the first access network device Performing data transmission with the second PDCP entity of the second access network device, thereby implementing data transmission in an eMBB-based switching mode.
  • FIG. 1 is a schematic flowchart of a data transmission method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a terminal according to another embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a data transmission method according to an embodiment of the present invention, as shown in FIG. 1.
  • the terminal uses the first PDCP entity of the terminal, the first PDCP entity of the first access network device, or the first PDCP entity of the first access network device and the The second PDCP entity of the second access network device performs data transmission.
  • the first PDCP entity of the terminal is one of the two PDCP entities of the terminal;
  • the first PDCP entity of the terminal and the first PDCP entity of the first access network device correspond to a first protocol stack
  • the second PDCP entity of the terminal and the second PDCP entity of the second access network device Corresponding to the second protocol stack.
  • the access network equipment involved in the present invention may be an evolved base station (Evolved) in the Evolved Universal Mobile Communication System Terrestrial Radio Access Network (Evolved Universal Mobile Telecommunication System Territorial Access Network, E-UTRAN) NodeB, eNB), or may also be a 5G base station in the next generation radio access network (Next-Generation-Radio Access Network, NG-RAN), that is, gNB, etc., which is not particularly limited in this embodiment.
  • Evolved Evolved Universal Mobile Communication System Terrestrial Radio Access Network
  • eNB Evolved Universal Mobile Telecommunication System Territorial Access Network
  • NG-RAN next generation radio access network
  • the core network device involved in the present invention may be a mobility management device, and may specifically be an access and mobility management function (Access and Mobility Management) in a 5G core network, that is, Next Generation Core (NGCN) Function (AMF), or may also be a 4G core network (evolved packet core (Evolved Packet Core, EPC) mobility management entity (MobilityManagementEntity, MME), etc., this embodiment is not particularly limited.
  • NGCN Next Generation Core
  • AMF Next Generation Core
  • EPC evolved Packet Core
  • MME Mobility ManagementEntity
  • the core idea of the present invention is that during the handover process based on eMBB, the terminal can simultaneously maintain the protocol stack with the source access network device and the target access network device, respectively, and correspond to different PDCP entities, namely the first PDCP entity. And the second PDCP entity, by using the first PDCP entity of the terminal, with the first PDCP entity of the first access network device or with the first PDCP entity of the first access network device and the The second PDCP entity of the second access network device performs data transmission, thereby implementing data transmission in the eMBB-based switching mode.
  • this embodiment can be applied to device switching between radio access networks of the same type, for example, in NG-RAN, switching from one gNB to another gNB, or, for example, in E-UTRAN , Handover from one eNB to another, or can also be applied to network handover between different types of radio access networks, for example, network handover from NG-RAN to E-UTRAN, or, for example, from E-UTRAN
  • the network handover to the NG-RAN is not particularly limited in this embodiment.
  • the first access network device may be a source access network device, and the second access network device may be a target access network device, or all The first access network device may be a target access network device, and the second access network device may be a source access network device, which is not particularly limited in this embodiment.
  • the first PDCP entity of the terminal used by the terminal may be the terminal according to the first access network device or the second access
  • the instruction of the network device is determined, or may be determined by the terminal according to the pre-configured configuration information, which is not particularly limited in this embodiment.
  • the terminal can simultaneously maintain the protocol stack with the first access network device, that is, the first protocol stack, and the protocol stack with the second access network device, that is, the second protocol stack, and respectively correspond to different PDCP entities That is, the first PDCP entity and the second PDCP entity.
  • the terminal may specifically use one of the two PDCP entities of the terminal, that is, the first PDCP entity, to communicate with the first PDCP entity of the first access network device Data transmission;
  • the terminal may specifically use one of the two PDCP entities of the terminal, namely the first PDCP entity, and the first PDCP entity of the first access network device and the The second PDCP entity of the second access network device performs data transmission.
  • the following transmission methods can be adopted for the transmission of downlink data. Among them, it involves the header compression processing and decompression processing of the downstream data.
  • header compression processing may be Robust Header Compression (ROHC) processing or other header compression processing, which is not particularly limited in this embodiment.
  • ROI Robust Header Compression
  • the so-called decompression process may be the decompression process corresponding to the ROHC process, or may also be the decompression process corresponding to the other header compression processes, as long as it corresponds to the adopted header compression process in one-to-one correspondence. This is not particularly limited.
  • the terminal may specifically use the first PDCP entity of the terminal to decompress the first downlink data packet sent by the first access network device.
  • the first downlink data packet may be obtained by performing header compression processing on the first downlink data for the first PDCP entity of the first access network device.
  • the first access network device may be a source access network device
  • the second access network device may be a target access network device
  • Transmission mode B The terminal may specifically use the first PDCP entity of the terminal to decompress the second downlink data packet sent by the second access network device.
  • the second downlink data packet may be obtained by the first PDCP entity of the first access network device performing header compression processing on the second downlink data and sent to the second access network device.
  • the first access network device may be a source access network device
  • the second access network device may be a target access network device
  • Transmission mode C Combine transmission mode A and transmission mode B to realize the transmission of downlink data.
  • the terminal in the first data transmission manner, may specifically send first uplink feedback information to the first access network device, the first The uplink feedback information may include uplink feedback information of the first downlink data packet and / or uplink feedback information of the second downlink data packet.
  • the first uplink feedback information may be a distributed robust header compression feedback control protocol data unit (Control PDU for interspersed ROHC feedback), or may be other compressed feedback control protocol data units. There is no particular limitation.
  • the first access network device may be a source access network device
  • the second access network device may be a target access network device
  • the terminal in the first data transmission manner, may specifically send second uplink feedback information to the second access network device, the second The uplink feedback information includes uplink feedback information of the first downlink data packet and / or uplink feedback information of the second downlink data packet for the second access network device to send the second uplink feedback information To the first access network device.
  • the second upstream feedback information may be a distributed robust header compression feedback control protocol data unit (Control PDU for interspersed ROHC feedback), or may be other compression feedback control protocol data units. There is no particular limitation.
  • the first access network device may be a source access network device
  • the second access network device may be a target access network device
  • the terminal may specifically use a combination of the technical solutions in the foregoing two implementation manners to transmit the first uplink feedback information and The second uplink feedback information.
  • the following transmission method can be used for the transmission of uplink data.
  • it involves header compression processing and decompression processing of upstream data.
  • header compression processing may be Robust Header Compression (ROHC) processing or other header compression processing, which is not particularly limited in this embodiment.
  • ROI Robust Header Compression
  • the so-called decompression process may be the decompression process corresponding to the ROHC process, or may also be the decompression process corresponding to the other header compression processes, as long as it corresponds to the adopted header compression process in one-to-one correspondence, this embodiment This is not particularly limited.
  • Transmission mode D The terminal may specifically use the first PDCP entity of the terminal to perform header compression processing on the first uplink data to obtain a first uplink data packet, and send the first uplink data packet to the first access network device.
  • the first access network device may be a target access network device
  • the second access network device may be a source access network device
  • Transmission mode E The terminal may specifically use the first PDCP entity of the terminal to perform header compression processing on the second uplink data to obtain a second uplink data packet, and send the second uplink data packet to the second access network device A second uplink data packet, and is sent by the second access network device to the first access network device for the first access network device to use the first PDCP of the first access network device The entity decompresses the second uplink data packet.
  • the first access network device may be a target access network device
  • the second access network device may be a source access network device
  • Transmission mode F Combine transmission mode D and transmission mode E to realize the transmission of downlink data.
  • the first network device may further perform merge processing on them, and then, after the aggregation processing The first uplink data packet and the second uplink data packet are decompressed.
  • the terminal in the first data transmission manner, may specifically receive the first downlink feedback information sent by the first access network device.
  • the first downlink feedback information may include downlink feedback information of the first uplink data packet and / or downlink feedback information of the second uplink data packet, and the first downlink feedback information may be the first access Generated by the network device, or may also be generated for the second access network device and sent to the first access network device.
  • the first downlink feedback information may be a distributed control protocol data unit of robust header compression feedback (Control PDU for interspersed ROHC feedback), or may be other control protocol data unit of compressed feedback. This is not particularly limited.
  • the first access network device may be a target access network device
  • the second access network device may be a source access network device
  • the terminal in the first data transmission manner, may specifically receive second downlink feedback information sent by the second access access network device.
  • the second downlink feedback information may include downlink feedback information of the first uplink data packet and / or downlink feedback information of the second uplink data packet, and the second downlink feedback information may be the second access network Generated by the device, or may also be generated for the first access network device and sent to the second access network device.
  • the second downlink feedback information may be a distributed robust header compression feedback control protocol data unit (Control PDU for interspersed ROHC feedback), or may be other compression feedback control protocol data units. There is no particular limitation.
  • the first access network device may be a target access network device
  • the second access network device may be a source access network device
  • the terminal may specifically use a combination of technical solutions in the foregoing two implementation manners to transmit the first downlink feedback information And second downlink feedback information.
  • the first access network device may directly Sending the first uplink data packet and / or the second uplink data packet after decompression processing to the core network device, or the first access network device may also send the core network device to the core network device through the second access network device Sending the first uplink data packet and / or the second uplink data packet after decompression processing, that is, the first access network device may send decompression processing to the second access network device
  • the subsequent first uplink data packet and / or the second uplink data packet for the second access network device to send the first uplink data packet and the first uplink data packet after decompression processing to the core network device / Or the second uplink data packet, or the first access network device may also combine the foregoing two methods to decompress the first uplink data packet and / or the second uplink data packet after decompression processing Send to the core network equipment, the real This embodiment is not particularly limited.
  • the first access network device may further receive header compression processing sent by the second access network device Or the first compressed information of the decompression process, as the compressed information used by the first access network device to perform the header compression process or the decompression process.
  • the first access network device may be a target access network device
  • the second access network device may be a source access network device
  • the first compressed information may include but is not limited to at least one of the following information:
  • Context Context
  • profile ID profile
  • sliding window sliding window
  • translation table translation
  • flag flag
  • field field
  • the first compressed information in the header compression processing or decompression processing may be transmitted using a resource block as a transmission unit, or may be transmitted using other resource units as a transmission unit, which is not performed in this embodiment Specially limited.
  • the first compression information of the header compression processing or decompression processing may be specifically carried in the handover request or may also be carried in the handover command, which is not particularly limited in this embodiment.
  • the terminal may further reset the first compressed information.
  • the first access network device also needs to reset the first compressed information to ensure synchronization between the terminal and the network side.
  • the terminal if the first condition is satisfied, the terminal resets the first compressed information of the downlink data;
  • the first condition may include but is not limited to at least one of the following cases:
  • Protocol Data Unit Protocol Data Unit
  • the terminal if the second condition is satisfied, the terminal resets the first compression information of the uplink data;
  • the second condition may include but is not limited to at least one of the following cases:
  • the first compression information of the header compression process or the decompression process may be specifically transmitted after the path switching process.
  • the first access network device may be a target access network device
  • the second access network device may be a source access network device
  • the following transmission methods can be adopted for the transmission of downlink data. Among them, it involves the header compression processing and decompression processing of the downstream data.
  • header compression processing may be Robust Header Compression (ROHC) processing or other header compression processing, which is not particularly limited in this embodiment.
  • ROI Robust Header Compression
  • the so-called decompression process may be the decompression process corresponding to the ROHC process, or may also be the decompression process corresponding to the other header compression processes, as long as it corresponds to the adopted header compression process in one-to-one correspondence, this embodiment This is not particularly limited.
  • Transmission mode A ′ The terminal may specifically use the first PDCP entity of the terminal to decompress the third downlink data packet sent by the first access network device; wherein, the third downlink data packet It may be obtained by performing header compression processing on the third downlink data for the first PDCP entity of the first access network device, or may also perform header on the third downlink data for the second PDCP entity of the second access network device The compression process obtains and sends to the first access network device.
  • Transmission mode B ′ The terminal uses the first PDCP entity of the terminal to decompress the fourth downlink data packet sent by the second access network device; wherein, the fourth downlink data packet may be The first PDCP entity of the first access network device performs header compression processing on the fourth downlink data and sends it to the second access network device, or may also be the second of the second access network device The PDCP entity performs header compression processing on the fourth downlink data to obtain it.
  • Transmission mode C ' Combine transmission mode A' and transmission mode B 'to realize the transmission of downlink data.
  • the terminal in the second data transmission manner, may specifically send third uplink feedback information to the first access network device, the third The uplink feedback information may include uplink feedback information of the third downlink data packet and / or uplink feedback information of the fourth downlink data packet.
  • the third upstream feedback information may be a distributed robust header compression feedback control protocol data unit (Control PDU for interspersed ROHC feedback), or may be other compression feedback control protocol data units. There is no particular limitation.
  • the terminal in the second data transmission manner, may specifically send fourth uplink feedback information to the second access network device, the fourth The uplink feedback information may include uplink feedback information of the third downlink data packet and / or uplink feedback information of the fourth downlink data packet.
  • the fourth uplink feedback information may be a distributed robust header compression feedback control protocol data unit (Control PDU for interspersed ROHC feedback), or may be other compression feedback control protocol data units. There is no particular limitation.
  • the terminal may specifically use a combination of the technical solutions in the foregoing two implementation manners to transmit the third uplink feedback information and Fourth uplink feedback information.
  • the first access network device may further transmit the third with the second access network device Uplink feedback information and / or the fourth uplink feedback information.
  • the following transmission method can be used for the transmission of uplink data.
  • it involves header compression processing and decompression processing of upstream data.
  • header compression processing may be Robust Header Compression (ROHC) processing or other header compression processing, which is not particularly limited in this embodiment.
  • ROI Robust Header Compression
  • the so-called decompression process may be the decompression process corresponding to the ROHC process, or may also be the decompression process corresponding to the other header compression processes, as long as it corresponds to the adopted header compression process in one-to-one correspondence. This is not particularly limited.
  • Transmission method D ′ The terminal may specifically use the first PDCP entity of the terminal to perform header compression processing on the third uplink data to obtain a third uplink data packet, and send the first uplink network device to the first access network device.
  • the access network device sends the third uplink data packet to the second access network device, and the second access network device uses the second PDCP entity of the second access network device to The third upstream data packet is decompressed
  • Transmission method E ′ The terminal may specifically use the first PDCP entity of the terminal to perform header compression processing on the fourth uplink data to obtain a fourth uplink data packet, and send the second uplink network device The fourth uplink data packet, for the second access network device to use the second PDCP entity of the second access network device to decompress the fourth uplink data packet, or the second The access network device sends the fourth uplink data packet to the first access network device, and the first access network device uses the first PDCP entity of the first access network device to The fourth upstream data packet is decompressed
  • Transmission mode F ' combine transmission mode D' and transmission mode E 'to realize the transmission of downlink data.
  • the first network device may further perform merge processing on them, and then, after the aggregation processing The third uplink data packet and the fourth uplink data packet are decompressed.
  • Transmission mode G ' Combine transmission mode D' and transmission mode E 'to realize the transmission of downlink data.
  • the first network device performs decompression processing after receiving the third uplink data packet
  • the second network device performs decompression processing after receiving the fourth uplink data packet
  • the The first network device or the second network device performs merge processing on them.
  • the terminal in the second data transmission manner, may specifically receive third downlink feedback information sent by the first access network device, and the first The three downlink feedback information may include downlink feedback information of the third uplink data packet and / or downlink feedback information of the fourth uplink data packet, and the third downlink feedback information may be generated for the first access network device Or, it may be generated for the second access network device and sent to the first access network device.
  • the third downlink feedback information may be a distributed control protocol data unit for robust header compression feedback (Control PDU for interspersed ROHC feedback), or may be another control protocol data unit for compressed feedback.
  • Control PDU for interspersed ROHC feedback
  • the terminal may specifically receive fourth downlink feedback information sent by the second access access network device.
  • the fourth downlink feedback information may include downlink feedback information of the third uplink data packet and / or downlink feedback information of the fourth uplink data packet, and the fourth downlink feedback information may be the second access network Generated by the device, or may also be generated for the first access network device and sent to the second access network device.
  • the fourth downlink feedback information may be a distributed robust header compression feedback control protocol data unit (Control PDU for interspersed ROHC feedback), or may be other compression feedback control protocol data units. There is no particular limitation.
  • the terminal may specifically use a combination of the technical solutions in the foregoing two implementation manners to transmit the third downlink feedback information and Fourth downlink feedback information.
  • the first uplink network device sends the third uplink data packet and / or the fourth uplink data packet After decompression processing, the first access network device may directly send the third uplink data packet and / or the fourth uplink data packet after decompression processing to the core network device, or the first access The network access device may also send the third uplink data packet and / or the fourth uplink data packet after decompression processing to the core network device through the second access network device, that is, the first access The network device may send the third uplink data packet and / or the fourth uplink data packet after decompression processing to the second access network device for the second access network device to send to the core The network device sends the third uplink data packet and / or the fourth uplink data packet after decompression processing, or the first access network device may also combine the foregoing two methods to Describe the third upstream packet and / The fourth uplink data packet to the core network apparatus, the present embodiment is not particularly limited to this embodiment.
  • the third uplink data packet and / or the fourth uplink data packet are sent by the second access network device to After decompression processing, the second access network device may directly send the third uplink data packet and / or the fourth uplink data packet after decompression processing to the core network device, or the second The network access device may also send the third uplink data packet and / or the fourth uplink data packet after decompression processing to the core network device through the first access network device, that is, the second access The network device may send the third uplink data packet and / or the fourth uplink data packet after decompression processing to the first access network device for the first access network device to send to the core The network device sends the third uplink data packet and / or the fourth uplink data packet after decompression processing, or the second access network device may also combine the foregoing two methods to Describe the third upstream packet and / The fourth uplink data packet to the core network apparatus, the present embodiment is not particularly limited to this embodiment.
  • the first access network device and the second access network device may specifically use the above two implementation methods.
  • the third uplink data packet and / or the fourth uplink data packet after decompression processing are sent to the core network device.
  • the first access network device and the second network device may respectively send the third uplink data packet and / or the fourth uplink data packet after decompression processing to the core network device.
  • the first access network device may further transmit the header compression with the second access network device
  • the second compressed information processed or decompressed is used as the compressed information used by the first access network device and the second access network device to perform header compression processing or decompression processing.
  • the second compressed information may include but is not limited to at least one of the following information:
  • Context Context
  • profile ID profile
  • sliding window sliding window
  • translation table translation
  • flag flag
  • field field
  • the second compressed information in the header compression processing or decompression processing may be transmitted in a resource block as a transmission unit, or may be transmitted in another resource unit as a transmission unit, which is not performed in this embodiment Specially limited.
  • the second compression information of the header compression processing or the decompression processing may be carried in a handover request or may also be carried in a handover command, which is not particularly limited in this embodiment.
  • the source access network device when the source access network device receives the handover command, the source access network device sends the second compression information of the header compression processing or decompression processing to the target access network device. Then, before the source access network device releases the corresponding protocol stack, periodic interaction is performed between the source access network device and the target access network device, or the source access network device triggers the interaction .
  • the terminal may further reset the second compressed information.
  • the first access network device and the second access network device also need to reset the second compressed information to ensure synchronization between the terminal and the network side and the network side.
  • the terminal if the third condition is satisfied, the terminal resets the second compressed information of the downlink data;
  • the third condition may include but is not limited to at least one of the following cases:
  • Protocol Data Unit Protocol Data Unit
  • the terminal if the fourth condition is satisfied, the terminal resets the second compressed information of the uplink data;
  • the fourth condition may include but is not limited to at least one of the following cases:
  • the second compression information of the header compression process or the decompression process may be specifically transmitted after the path switching process.
  • the terminal can simultaneously maintain the protocol stack with the source access network device and the target access network device, and correspond to different PDCP entities, namely the first PDCP entity and the third Two PDCP entities, by using the first PDCP entity of the terminal, with the first PDCP entity of the first access network device or with the first PDCP entity of the first access network device and the second
  • the second PDCP entity of the access network device performs data transmission, thereby implementing data transmission in the eMBB-based switching mode.
  • FIG. 2 is a schematic structural diagram of a terminal according to another embodiment of the present invention, as shown in FIG. 2.
  • the terminal in this embodiment may include a transmission unit 21, which may be used during the handover process to use the first PDCP entity of the terminal to communicate with the first PDCP entity of the first access network device or to the first The first PDCP entity of the network access device and the second PDCP entity of the second access network device perform data transmission.
  • the first PDCP entity of the terminal is one of the two PDCP entities of the terminal; the first PDCP entity of the terminal and the first PDCP entity of the first access network device correspond to the first Protocol stack, the second PDCP entity of the terminal and the second PDCP entity of the second access network device correspond to the second protocol stack.
  • the access network equipment involved in the present invention may be an evolved base station (Evolved) in the Evolved Universal Mobile Communication System Terrestrial Radio Access Network (Evolved Universal Mobile Telecommunication System Territorial Access Network, E-UTRAN) NodeB, eNB), or may also be a 5G base station in the next generation radio access network (Next-Generation-Radio Access Network, NG-RAN), that is, gNB, etc., which is not particularly limited in this embodiment.
  • Evolved Evolved Universal Mobile Communication System Terrestrial Radio Access Network
  • eNB Evolved Universal Mobile Telecommunication System Territorial Access Network
  • NG-RAN next generation radio access network
  • the core network device involved in the present invention may be a mobility management device, and may specifically be an access and mobility management function (Access and Mobility Management) in a 5G core network, that is, Next Generation Core (NGCN) Function (AMF), or may also be a 4G core network (evolved packet core (Evolved Packet Core, EPC) mobility management entity (MobilityManagementEntity, MME), etc., this embodiment is not particularly limited.
  • NGCN Next Generation Core
  • AMF Next Generation Core
  • EPC evolved Packet Core
  • MME Mobility ManagementEntity
  • the core idea of the present invention is that during the handover process based on eMBB, the terminal can simultaneously maintain the protocol stack with the source access network device and the target access network device, respectively, and correspond to different PDCP entities, namely the first PDCP entity. And the second PDCP entity, by using the first PDCP entity of the terminal, with the first PDCP entity of the first access network device or with the first PDCP entity of the first access network device and the The second PDCP entity of the second access network device performs data transmission, thereby implementing data transmission in the eMBB-based switching mode.
  • this embodiment can be applied to device switching between radio access networks of the same type, for example, in NG-RAN, switching from one gNB to another gNB, or, for example, in E-UTRAN , Handover from one eNB to another, or can also be applied to network handover between different types of radio access networks, for example, network handover from NG-RAN to E-UTRAN, or, for example, from E-UTRAN
  • the network handover to the NG-RAN is not particularly limited in this embodiment.
  • the first access network device may be a source access network device, and the second access network device may be a target access network device, or all The first access network device may be a target access network device, and the second access network device may be a source access network device, which is not particularly limited in this embodiment.
  • the first PDCP entity of the terminal utilized by the transmission unit 21 may be the transmission unit 21 according to the first access network device or the second access network device Is determined, or may be determined according to pre-configured configuration information, which is not particularly limited in this embodiment.
  • the terminal can simultaneously maintain the protocol stack with the first access network device, namely the first protocol stack, and the protocol stack with the second access network device, namely the second protocol stack, and correspond to different PDCP entities, respectively That is, the first PDCP entity and the second PDCP entity.
  • the transmission unit 21 may specifically be used
  • the first PDCP entity of the terminal uses the first PDCP entity of the terminal to decompress the first downlink data packet sent by the first access network device; wherein, the first downlink data packet is the first access network
  • the first PDCP entity of the device obtains header compression processing on the first downlink data; and / or
  • the first PDCP entity uses the first PDCP entity of the terminal to decompress the second downlink data packet sent by the second access network device; wherein, the second downlink data packet is of the first access network device
  • the first PDCP entity performs header compression processing on the second downlink data to obtain and send it to the second access network device.
  • the transmission unit 21 may be further used
  • first uplink feedback information includes uplink feedback information of the first downlink data packet and / or uplink feedback information of the second downlink data packet ;and / or
  • the second uplink feedback information includes uplink feedback information of the first downlink data packet and / or uplink feedback information of the second downlink data packet
  • the second access network device For the second access network device to send the second uplink feedback information to the first access network device.
  • the transmission unit 21 may specifically be used
  • the first access network device uses the first PDCP entity of the first access network device to decompress the first uplink data packet; and / or
  • the second access network device sends to the first access network device for the first access network device to use the first PDCP entity of the first access network device for the second uplink data
  • the package is decompressed.
  • the transmission unit 21 may be further used
  • first downlink feedback information sent by the first access network device, where the first downlink feedback information includes downlink feedback information of the first uplink data packet and / or downlink of the second uplink data packet Feedback information, the first downlink feedback information is generated for the first access network device, or generated for the second access network device and sent to the first access network device; and / or
  • the second downlink feedback information includes downlink feedback information of the first uplink data packet and / or downlink of the second uplink data packet
  • the second downlink feedback information is generated for the second access network device, or generated for the first access network device and sent to the second access network device.
  • the transmission unit 21 may be further used for the first uplink data packet and / or the second uplink data packet after the decompression process may be used by the first access network
  • the device is sent to the core network device, or may be sent by the first access network device to the second access network device, and sent by the second access network device to the core network device, or It can be sent to the core network device by combining the above two methods, which is not particularly limited in this embodiment.
  • the first compression information of the header compression processing or decompression processing may be sent by the second access network device to the first access network device.
  • the first compressed information in the header compression processing or decompression processing may be transmitted using a resource block as a transmission unit, or may be transmitted using other resource units as a transmission unit, which is not performed in this embodiment Specially limited.
  • the first compression information of the header compression process or the decompression process may be carried in a handover request, or may also be carried in a handover command, which is not particularly limited in this embodiment.
  • the transmission unit 21 may be further configured to reset the first compression information of the header compression processing or decompression processing.
  • the first access network device also needs to reset the first compressed information to ensure synchronization between the terminal and the network side.
  • the transmission unit 21 can be specifically used for the transmission unit 21 .
  • the transmission unit 21 can be specifically used for the transmission unit 21 .
  • the first condition includes at least one of the following:
  • the transmission unit 21 may specifically be used
  • the terminal resets the first compressed information of the uplink data;
  • the second condition includes at least one of the following:
  • the first compression information of the header compression process or the decompression process may be specifically transmitted after the path switching process.
  • the transmission unit 21 may specifically be used
  • the first PDCP entity of the terminal uses the first PDCP entity of the terminal to decompress the third downlink data packet sent by the first access network device; wherein, the third downlink data packet is the data of the first access network device
  • the first PDCP entity performs header compression processing on the third downlink data, or performs header compression processing on the third downlink data for the second PDCP entity of the second access network device, and sends it to the first access network Equipment; and / or
  • the first PDCP entity uses the first PDCP entity of the terminal to decompress the fourth downlink data packet sent by the second access network device; wherein, the fourth downlink data packet is of the first access network device
  • the first PDCP entity performs header compression processing on the fourth downlink data and sends it to the second access network device, or performs header compression processing on the fourth downlink data for the second PDCP entity of the second access network device obtain.
  • the transmission unit 21 may be further used
  • the third uplink feedback information includes uplink feedback information of the third downlink data packet and / or uplink feedback information of the fourth downlink data packet; and / or
  • the fourth uplink feedback information includes uplink feedback information of the third downlink data packet and / or uplink feedback information of the fourth downlink data packet.
  • the third uplink feedback information and / or the fourth uplink feedback information may be specifically transmitted between the first access network device and the second access network device.
  • the transmission unit 21 may specifically be used
  • the first access network device uses the first PDCP entity of the first access network device to decompress the third uplink data packet, or the first access network device transfers the third uplink data packet
  • the data packet is sent to the second access network device, and the second access network device uses the second PDCP entity of the second access network device to decompress the third uplink data packet; and / or
  • the first PDCP entity of the terminal uses the second PDCP entity of the second access network device to decompress the fourth uplink data packet, or the second access network device transfers the fourth uplink data packet
  • the data packet is sent to the first access network device, and the first access network device uses the first PDCP entity of the first access network device to decompress the fourth uplink data packet.
  • the transmission unit 21 may be further used
  • the third downlink feedback information is generated for the first access network device, or generated for the second access network device and sent to the first access network device; and / or
  • the fourth downlink feedback information includes downlink feedback information of the third uplink data packet and / or downlink of the fourth uplink data packet
  • the fourth downlink feedback information is generated for the second access network device, or generated for the first access network device and sent to the second access network device.
  • the third uplink data packet and / or the fourth uplink data packet after the decompression process may be sent by the first access network device to the core network device, or sent to the
  • the second access network device is sent by the second access network device to the core network device, or may be sent by the second access network device to the core network device, or sent to the
  • the first access network device is sent by the first access network device to the core network device, or may also be sent to the core network device in the above two manners, which is not particularly limited in this embodiment.
  • the second compressed information of the header compression processing or decompression processing may be transmitted between the first access network device and the second access network device.
  • the second compressed information in the header compression processing or decompression processing may be transmitted in a resource block as a transmission unit, or may be transmitted in another resource unit as a transmission unit, which is not performed in this embodiment Specially limited.
  • the second compression information of the header compression processing or the decompression processing may be carried in a handover request or may also be carried in a handover command, which is not particularly limited in this embodiment.
  • the transmission unit 21 may further be used to reset the second compression information of the header compression processing or decompression processing.
  • the first access network device and the second access network device also need to reset the second compressed information to ensure synchronization between the terminal and the network side.
  • the transmission unit 21 can be specifically used for the transmission unit 21 .
  • the transmission unit 21 can be specifically used for the transmission unit 21 .
  • the terminal resets the second compressed information of the downlink data;
  • the first condition includes at least one of the following:
  • the transmission unit 21 may specifically be used
  • the second condition includes at least one of the following conditions:
  • the second compression information of the header compression process or the decompression process may be specifically transmitted after the path switching process.
  • the terminal can simultaneously maintain the protocol stack with the source access network device and the target access network device, respectively, and correspond to different PDCP entities, namely the first PDCP entity and the first Two PDCP entities may use the first PDCP entity of the terminal through the transmission unit, the first PDCP entity of the first access network device or the first PDCP entity of the first access network device and the The second PDCP entity of the second access network device performs data transmission, thereby implementing data transmission in the eMBB-based switching mode.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined Or it can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, 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 the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware, or in the form of hardware plus software functional units.

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

Abstract

Un mode de réalisation de la présente invention concerne un procédé de transmission de données et un terminal. Dans le mode de réalisation de la présente invention, pendant un processus de transfert intercellulaire basé sur eMBB, le terminal peut simultanément gérer séparément des piles de protocoles avec un dispositif de réseau d'accès source et avec un dispositif de réseau d'accès cible et correspondre séparément avec différentes entités PDCP, à savoir une première entité PDCP et une seconde entité PDCP. La première entité PDCP du terminal peut être utilisée pour effectuer une transmission de données avec une première entité PDCP d'un premier dispositif de réseau d'accès ou avec la première entité PDCP du premier dispositif de réseau d'accès et une seconde entité PDCP d'un second dispositif de réseau d'accès, ce qui permet d'effectuer une transmission de données en un mode de transfert intercellulaire basé sur eMBB.
PCT/CN2018/113482 2018-11-01 2018-11-01 Procédé de transmission de données et terminal WO2020087457A1 (fr)

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CN201880096335.4A CN112544104B (zh) 2018-11-01 2018-11-01 数据的传输方法及终端
PCT/CN2018/113482 WO2020087457A1 (fr) 2018-11-01 2018-11-01 Procédé de transmission de données et terminal

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