WO2018077182A1 - 数据传输的方法、装置、用户设备和基站 - Google Patents

数据传输的方法、装置、用户设备和基站 Download PDF

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Publication number
WO2018077182A1
WO2018077182A1 PCT/CN2017/107632 CN2017107632W WO2018077182A1 WO 2018077182 A1 WO2018077182 A1 WO 2018077182A1 CN 2017107632 W CN2017107632 W CN 2017107632W WO 2018077182 A1 WO2018077182 A1 WO 2018077182A1
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Prior art keywords
base station
data
logical channel
transmitted
transmits
Prior art date
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PCT/CN2017/107632
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English (en)
French (fr)
Inventor
张健
曾清海
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP17863494.5A priority Critical patent/EP3522667B1/en
Publication of WO2018077182A1 publication Critical patent/WO2018077182A1/zh
Priority to US16/393,686 priority patent/US10735164B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, user equipment, and base station.
  • the UE can access multiple base stations at the same time, so that multiple base stations can simultaneously serve the UE.
  • the UE performs data transmission with multiple base stations is the focus of the industry.
  • the two base stations are simultaneously accessed by the UE as an example. According to the roles of the two base stations, the two base stations are respectively referred to as the primary base station and the secondary base station.
  • the UE transmits data to the primary base station
  • the UE can directly transmit data to the primary base station. Or, the data is first transmitted to the slave base station and forwarded by the slave base station to the master base station.
  • the primary base station transmits data to the UE
  • the primary base station may directly transmit the data to the UE, or may first transmit the data to the secondary base station, and the secondary base station forwards the data to the primary base station.
  • the data transmission fails, repeat the above process.
  • the present invention provides a method, an apparatus, a user equipment, and a base station for data transmission.
  • the technical solutions are as follows:
  • an embodiment of the present invention provides a data transmission method, where the method includes:
  • the user equipment UE When the user equipment UE transmits the same data between the first base station accessed by the UE and the second base station accessed by the UE, the UE passes the first logical channel and the first base station. Transmitting, by the first base station, data to be transmitted of the UE;
  • the UE since the UE transmits the same data between the first base station and the UE through the second logical channel and the second base station through the first logical channel, the reliability of the wireless link is improved, and the data transmission is reduced. Delay.
  • the method further includes:
  • the configuration information including the information that the UE transmits the same data between the first base station and the second base station is sent to the UE.
  • the first base station is triggered to transmit the same data between the UE and the first base station and the second base station, and the trigger mode is added.
  • the configuration information includes the UE and the first base station and the second The information for transmitting the same data between base stations is a diversity mode or a split type.
  • the configuration information when the first logical channel and the second logical channel are data radio bearers DRB, the configuration information includes the UE and the first base station and the second base station.
  • the information that transfers the same data between them is a diversity type or a split type.
  • the method further includes:
  • the UE acquires a first radio condition of a current channel, and when the first radio condition satisfies a first preset condition, the UE transmits the same data between the first base station and the second base station.
  • the UE determines whether to transmit the same data between the first base station and the second base station according to the first radio condition of the current channel, so as to trigger the triggering with the first base station when the first radio condition is not good.
  • the same data is transmitted between the second base stations, thereby improving the reliability of the wireless link and reducing the delay of data transmission.
  • the first preset condition includes at least one of the following conditions:
  • the reference signal received power RSRP between the UE and the first base station is not greater than the first preset power, and the reference signal received quality RSRQ between the UE and the first base station is not greater than the first preset value
  • the channel quality indication CQI of the radio channel between the UE and the first base station is not greater than a second preset value, and the signal to interference plus noise ratio SINR of the UE is not greater than a third preset value
  • the SNR of the SNR is not greater than the fourth preset value, and the statistic number of the hybrid automatic repeat request HARQ non-acknowledgement information NACK is greater than the fifth preset value, and the statistic number of the automatic retransmission request ARQ non-confirmation information NACK is greater than the sixth preset value.
  • the first wireless condition is any information that represents the wireless condition
  • the first preset condition is a condition corresponding to any information that represents the wireless condition, thereby enriching the triggering UE and the first base station.
  • the UE when the UE transmits the same data between the first base station accessed by the UE and the second base station accessed by the UE, the UE passes between the UE and the first base station.
  • the first logical channel, and the data of the UE transmitted by the first base station includes:
  • the UE When the UE transmits data to the first base station, and the UE transmits the same data between the first base station and the second base station, the UE passes the first logical channel, and the first Transmitting, by the base station, the data to be transmitted of the UE; or
  • the UE When the UE receives the data transmitted by the first base station, and the UE transmits the same data between the first base station and the second base station, the UE passes the first logical channel, and the The first base station transmits data to be transmitted of the UE.
  • the UE when the UE transmits in the uplink, the UE transmits the same data between the first base station and the second base station, and when the UE transmits in the downlink, the same data can be transmitted between the first base station and the second base station. Or different data.
  • the UE transmits in the downlink the UE transmits the same data between the first base station and the second base station, and when the UE transmits in the uplink, the same data or different data may be transmitted between the first base station and the second base station. Therefore, according to the specific conditions of uplink or downlink, the same or different transmission modes can be selected to improve the applicability of the solution.
  • the first base station and/or the second base station is a base station of a radio access network centralized processing unit CU and a distributed processing unit DU.
  • the first base station may be a traditional integrated base station, or may be a base station of a radio access network CU-DU separation architecture; the second base station may be a traditional integrated base station or a radio access network CU.
  • -DU separates the base station of the architecture, thus enriching the application scenario of the case.
  • the transmission mode in which the UE transmits the same data between the first base station and the second base station is a diversity transmission mode
  • the diversity transmission mode includes a diversity type or a diversity mode
  • the diversity transmission mode may be a diversity type or a diversity mode, thereby enriching the diversity transmission mode.
  • an embodiment of the present invention provides a data transmission method, where the method includes:
  • the first base station When the first base station transmits the same data between the user equipment UE and the second base station accessed by the UE, the first base station transmits the UE with the UE by using a first logical channel with the UE. Data to be transmitted;
  • the UE when the first base station transmits the same data between the UE and the second base station, the UE transmits the data to be transmitted of the UE to the UE through the first logical channel with the UE, and passes between the second base station and the second base station.
  • the interface between the first base station and the second base station transmits the data to be transmitted with the second base station, so that the second base station transmits the data to be transmitted with the UE through the second logical channel with the UE;
  • the same data is transmitted to the UE through the first logical channel and the second logical channel, thereby improving the reliability of the wireless link and reducing the delay of data transmission.
  • the method further includes:
  • the first base station acquires a second radio condition of the current channel, and when the second radio condition satisfies a second preset condition, the first base station transmits the same data between the UE and the second base station.
  • the first base station determines whether to transmit the same data between the UE and the second base station according to the second radio condition of the current channel, so as to trigger the UE and the second when the second radio condition is not good.
  • the same data is transmitted between the base stations, thereby improving the reliability of the wireless link and reducing the delay of data transmission.
  • the second preset condition includes at least one of the following conditions:
  • the reference signal received power RSRP between the UE and the first base station is not greater than the second preset power, and the reference signal received quality RSRQ between the UE and the first base station is not greater than a seventh preset value
  • the channel quality indication CQI of the radio channel between the UE and the first base station is not greater than an eighth preset value
  • the signal and interference plus noise ratio SINR of the UE is not greater than a ninth preset value
  • the UE is The SNR is not greater than the tenth preset value
  • the statistic number of the hybrid automatic repeat request HARQ non-acknowledgment information NACK is greater than the eleventh preset value
  • the statistic number of the automatic retransmission request ARQ non-confirmation information NACK is greater than the twelfth pre- Set the value.
  • the second wireless condition is any information that represents the wireless condition
  • the second preset condition is a condition corresponding to any information that represents the wireless condition, thereby enriching the trigger diversity UE and the first base station.
  • the method further includes:
  • the first base station sends configuration information to the UE, where the configuration information includes information about a manner in which data is transmitted between the UE and the first base station and the second base station.
  • the configuration information is sent to the UE to trigger the UE to transmit the same data between the first base station and the second base station.
  • the trigger mode has been increased.
  • the configuration information when the first logical channel and the second logical channel are both signaling radio bearers SRB, the configuration information includes a diversity mode or a split type.
  • the configuration information when the first logical channel and the second logical channel are data radio bearers DRB, the configuration information includes a diversity type or a split type.
  • the first base station transmits the data to be transmitted to the second base station by using an interface between the first base station and the second base station that is accessed by the UE, including:
  • the first base station sends a handover request message to the second base station, where the handover request message instructs the second base station to configure the second logical channel for the UE;
  • the application scenario of the present application is added in the handover scenario.
  • the first base station when the first base station transmits the same data between the user equipment UE and the second base station accessed by the UE, the first base station passes the first logic with the UE. And transmitting, by the UE, the data of the UE by using the UE, including:
  • the first base station When the first base station transmits data to the UE, and the first base station transmits the same data between the UE and the second base station, the first base station passes the first logical channel, and the Transmitting, by the UE, the data to be transmitted of the UE; or
  • the first base station When the first base station receives the data transmitted by the UE, and the first base station transmits the same data between the UE and the second base station, the first base station passes the first logical channel, and The UE transmits data to be transmitted of the UE.
  • the first base station when the first base station transmits in the uplink, the first base station transmits the same data between the UE and the second base station, and when the first base station transmits in the downlink, the same transmission may be performed between the UE and the second base station. Data or different data.
  • the first base station transmits in downlink the first base station transmits the same data between the UE and the second base station, and when the first base station transmits in the uplink, the same data or different data may be transmitted between the UE and the second base station. Therefore, according to the specific conditions of uplink or downlink, the same or different transmission modes can be selected to improve the applicability of the solution.
  • the first base station is a base station of a radio access network centralized processing unit CU and a distributed processing unit DU.
  • the first base station may be a traditional integrated base station, or may be a base station of the CU-DU separation architecture of the radio access network, thereby enriching the application scenario of the present application.
  • the transmission mode of transmitting the same data between the first base station and the UE and the second base station is a diversity transmission mode
  • the diversity transmission mode includes a diversity type or a diversity mode
  • the diversity transmission mode may be a diversity type or a diversity mode, thereby enriching the diversity transmission mode.
  • an embodiment of the present invention provides an apparatus for data transmission, where the apparatus includes:
  • a first transmission unit configured to: when transmitting the same data between the first base station accessed by the user equipment UE and the second base station accessed by the UE, by using a first logical channel with the first base station, Transmitting, by the first base station, data to be transmitted by the UE;
  • a second transmission unit configured to transmit the to-be-transmitted data with the second base station by using a second logical channel with the second base station, where the first logical channel is associated with the second logical channel The same radio bearer of the UE.
  • the device further includes:
  • a receiving unit configured to receive configuration information sent by the first base station, where the configuration information includes information about a manner of transmitting data between the UE and the first base station and the second base station;
  • the first determining unit is configured to be used with the first base station and the second base station. Transfer the same data between.
  • the configuration information includes the UE and the first base station and the second The information for transmitting the same data between base stations is a diversity mode or a split type.
  • the configuration information when the first logical channel and the second logical channel are data radio bearers DRB, the configuration information includes the UE and the first base station and the second base station.
  • the information that transfers the same data between them is a diversity type or a split type.
  • the device further includes:
  • a second determining unit configured to acquire a first radio condition of the current channel, and transmit the same data between the first base station and the second base station when the first radio condition meets the first preset condition.
  • the first preset condition includes at least one of the following conditions:
  • the reference signal received power RSRP between the UE and the first base station is not greater than the first preset power, and the reference signal received quality RSRQ between the UE and the first base station is not greater than the first preset value
  • the channel quality indication CQI of the radio channel between the UE and the first base station is not greater than a second preset value, and the signal to interference plus noise ratio SINR of the UE is not greater than a third preset value
  • the SNR of the SNR is not greater than the fourth preset value, and the statistic number of the hybrid automatic repeat request HARQ non-acknowledgement information NACK is greater than the fifth preset value, and the statistic number of the automatic retransmission request ARQ non-confirmation information NACK is greater than the sixth preset value.
  • the first transmission unit is further configured to transmit data to the first base station, and when the same data is transmitted between the first base station and the second base station, a first logical channel, and the first base station transmits the to-be-transmitted data of the UE;
  • the first transmission unit is further configured to receive data transmitted by the first base station, and transmit the same data between the first base station and the second base station, by using the first logical channel, The first base station transmits data to be transmitted of the UE.
  • the first base station and/or the second base station is a base station of a radio access network centralized processing unit CU and a distributed processing unit DU.
  • the transmission mode for transmitting the same data with the first base station and the second base station is a diversity transmission mode
  • the diversity transmission mode includes a diversity type or a diversity mode
  • an embodiment of the present invention provides an apparatus for data transmission, where the apparatus includes:
  • a third transmission unit configured to transmit the UE with the UE by using a first logical channel with the UE when the same data is transmitted between the user equipment UE and the second base station accessed by the UE Data to be transmitted;
  • a fourth transmission unit configured to transmit, by using an interface with the second base station, the data to be transmitted with the second base station, so that the second base station passes the second logic with the UE And transmitting, by the UE, the to-be-transmitted data, where the first logical channel and the second logical channel are associated with the same radio bearer of the UE.
  • the device further includes:
  • a third determining unit configured to acquire a second wireless condition of the current channel, and transmit the same data between the UE and the second base station when the second wireless condition meets the second preset condition.
  • the second preset condition includes at least one of the following conditions:
  • the reference signal received power RSRP between the UE and the device is not greater than a second preset power
  • the reference signal received quality RSRQ between the UE and the device is not greater than a seventh preset value
  • the UE and the The channel quality indication CQI of the wireless channel between the devices is not greater than an eighth preset value
  • the signal to interference plus noise ratio SINR of the UE is not greater than a ninth preset value
  • the signal to noise ratio SNR of the UE is not greater than
  • the tenth preset value, the hybrid automatic repeat request, the HARQ non-confirmation information NACK, the statistical number is greater than the eleventh preset value
  • the automatic retransmission request ARQ non-confirmation information NACK is greater than the twelfth preset value.
  • the device further includes:
  • a sending unit configured to send configuration information to the UE, where the configuration information includes information about a manner in which the UE transmits data between the device and the second base station.
  • the configuration information when the first logical channel and the second logical channel are both signaling radio bearers SRB, the configuration information includes a diversity mode or a split type.
  • the configuration information when the first logical channel and the second logical channel are data radio bearers DRB, the configuration information includes a diversity type or a split type.
  • the fourth transmission unit is further configured to send a handover request message to the second base station, where the handover request message indicates that the second base station configures the second logic for the UE And receiving, by the second base station, a handover response message, and transmitting, according to the handover response message, the data to be transmitted with the second base station by using an interface with a second base station that is accessed by the UE.
  • the third transmission unit is further configured to: transmit data to the UE, and transmit the same data between the UE and the second base station, by using the first logical channel. Transmitting, by the UE, the data to be transmitted of the UE; or
  • the third transmission unit is further configured to receive data transmitted by the UE, and transmit the same data between the UE and the second base station, and transmit the same to the UE by using the first logical channel.
  • the data to be transmitted of the UE is further configured to receive data transmitted by the UE, and transmit the same data between the UE and the second base station, and transmit the same to the UE by using the first logical channel. The data to be transmitted of the UE.
  • the device is a base station of a wireless access network centralized processing unit CU and a distributed processing unit DU.
  • the transmission mode for transmitting the same data with the UE and the second base station is a diversity transmission mode
  • the diversity transmission mode includes a diversity type or a diversity mode
  • an embodiment of the present invention provides a user equipment UE, where the UE includes: a transceiver, a processor, a bus, and a memory, where the transceiver, the processor, and the memory communicate with each other through the bus.
  • the transceiver Means for communication between the UE and a base station, the processor executing instructions stored in the memory, such that the UE performs the implementation of any of the possible implementations of any of the first aspect or the first aspect described above The method of transferring data.
  • an embodiment of the present invention provides a base station, where the base station includes: a transceiver, a processor, a bus, and a memory, where the transceiver, the processor, and the memory communicate with each other through the bus. Transmitting a transceiver for communication between the base station and a user equipment UE, the processor executing instructions stored in the memory, such that the base station performs a possible implementation of any one of the second aspect or the second aspect described above The method of transmitting data provided by the method.
  • an embodiment of the present invention provides a system chip, which is applied to a user equipment UE, where the chip includes: an input/output interface, at least one processor, a memory, and a bus; and the input/output interface passes through the bus.
  • the at least one processor is coupled to the memory, the input and output interface is for communication between the UE and a base station, and the at least one processor executes instructions stored in the memory such that the UE performs The method of transmitting data provided by any of the possible implementations of the first aspect or the first aspect.
  • an embodiment of the present invention provides a system chip, which is applied to a base station, where the chip includes: an input/output interface, at least one processor, a memory, and a bus; and the input/output interface passes through the bus and the At least one processor coupled to the memory, the input and output interface for communication between the base station and a user equipment UE, the at least one processor executing instructions stored in the memory such that the base station performs A method of transmitting data provided by any of the possible implementations of the second aspect or the second aspect above.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by a UE, including a program for performing UE design as described above.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by a first base station, including a program designed to perform the first base station as described above.
  • the UE transmits the to-be-transmitted data of the UE to the first base station by using the first logical channel, and transmits the to-be-transmitted data to the second base station by using the second logical channel, so that the second base station sends the to-be-transmitted data.
  • the data is forwarded to the first base station; since the UE transmits the same data through the first logical channel and the second logical channel, the reliability of the wireless link is improved, and the delay of data transmission is reduced.
  • FIG. 1 is a system architecture diagram of data transmission according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a first base station according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of another first base station according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for data transmission according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a UE transmitting a measurement report with a first base station according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a user plane protocol stack between a first base station and a second base station according to an embodiment of the present disclosure
  • FIG. 8 is a schematic structural diagram of a control plane protocol stack between a first base station and a second base station according to an embodiment of the present disclosure
  • FIG. 9 is a flowchart of another method for data transmission according to an embodiment of the present invention.
  • FIG. 10 is a block diagram of an apparatus for data transmission according to an embodiment of the present invention.
  • FIG. 11 is a block diagram of another apparatus for data transmission according to an embodiment of the present invention.
  • FIG. 12 is a block diagram of another apparatus for data transmission according to an embodiment of the present invention.
  • FIG. 13 is a block diagram of another apparatus for data transmission according to an embodiment of the present invention.
  • FIG. 14 is a block diagram of another apparatus for data transmission according to an embodiment of the present invention.
  • FIG. 15 is a block diagram of another apparatus for data transmission according to an embodiment of the present invention.
  • 16 is a block diagram of a first chip according to an embodiment of the present invention.
  • FIG. 17 is a block diagram of a second chip according to an embodiment of the present invention.
  • the embodiments of the present invention are mainly applied to a scenario of a high frequency cell, an ultra reliable and low latency communication (URLLC) communication scenario, or other scenarios requiring high reliability and delay of the wireless link. For example, switch scenes.
  • the wireless condition of the logical channel is not good, the data transmission may fail, and depending on the retransmission for recovery, the data transmission delay may increase, or the retransmission still fails when the wireless condition is still not good.
  • the embodiment of the invention transmits the same data through two logical channels, improves the reliability of the wireless link, and reduces the delay of data transmission.
  • an embodiment of the present invention provides a system architecture for data transmission, where the system architecture includes a UE 101, a first base station 102, and a second base station 103; the UE 101 simultaneously accesses the first base station 102 and the second base station 103;
  • a base station 102 can be a primary base station, and a second base station 103 can be a secondary base station; of course, the second base station 103 can be a primary base station, and the first base station 102 is a secondary base station; in the embodiment of the present invention, the first base station 102 and the second base station
  • the role of the base station 103 is not specifically limited.
  • the first base station 102 is the primary base station
  • the second base station 103 is the secondary base station as an example.
  • the UE 101 and the first base station 102 and the UE 101 and the second base station 103 use a diversity transmission mode for data transmission.
  • the UE 101 and the first base station 102 and the UE 101 and the second base station 103 may also perform data transmission by using a offload transmission mode.
  • the diversity transmission mode refers to transmitting the same data through the first logical channel between the UE 101 and the first base station 102 and the second logical channel between the UE 101 and the second base station 103; the offload transmission mode refers to the first logical channel and the first logical channel.
  • Two logical channels transmit different data.
  • the transmitted data may be radio resource control (RRC) signaling or user data.
  • RRC radio resource control
  • the first logical channel and the second logical channel are both associated with the same radio bearer of the UE 101, that is, the first logical channel and the second logical channel belong to the same radio bearer of the UE 101; the radio bearer is a wireless transmission data between the UE and the base station.
  • the first logical channel and the second logical channel are respectively established between the UE and the first cell (or the first cell group) provided by the first base station, and the second cell (or the second cell group) provided by the UE and the second base station between.
  • the first logical channel and the second logical channel are both connected to a same packet data convergence layer (PDCP).
  • PDCP packet data convergence layer
  • the type of the first logical channel and the type of the second logical channel are both signaling radio bearers (SRBs); when the transmitted data is user data, the first logical channel The type of the second logical channel and the second logical channel are both data radio bearers (DRBs).
  • the DRB Before transmitting data, establishing a first logical channel between the UE 101 and the first base station 102, and a second logical channel between the UE 101 and the second base station 103; when establishing the first logical channel and the second logical channel, the DRB is The type is configured as a diversity bearer or a split bearer; or the existing offload radio bearer is configured as a diversity mode or a split mode.
  • the SRB is configured as a diversity bearer or a split bearer, or the SRB is configured as a diversity mode or a split mode. Therefore, the diversity transmission mode includes a diversity bearer or a diversity mode; the offload transmission mode includes a split bearer or a split mode.
  • the data transmission method provided by the embodiment of the present invention can be applied to a traditional integrated base station, and can also be applied to a centralized unit (CU) and a distributed processing unit (DU) separation structure of a radio access network.
  • the first base station 102 may be a traditional integrated base station, or may be a base station of a radio access network CU-DU separation architecture
  • the second base station 103 may be a traditional integrated base station, or may be a radio access network CU-DU separation.
  • the base station of the architecture A traditional integrated base station refers to a base station in which radio protocol or air interface protocols are located in the same radio access network node.
  • the base station of the CU-DU separation architecture of the radio access network refers to a base station in which each protocol layer of the radio interface can be located in different radio access network nodes, and different radio access network nodes can be CU and DU.
  • the first base station 102 includes a first RRC 1021, a first PDCP 1022, a first radio link control (RLC), a first medium access control (MAC), and a first physical layer 1025. (Physical layer, PHY); a part of the first base station 102 is located in the first CU, the remaining units in the first base station 102 are located in the first DU, and the first base station 102 may include one or more first DUs.
  • the first CU and the first DU are connected by a wired link (such as an optical fiber) or a wireless link.
  • the unit located in the first CU and the unit located in the first DU may be flexibly deployed according to radio conditions between the first DU and the UE 101, different UE 101 or different radio bearers of the UE 101, and the like.
  • the first DU indicates that the first CU performs data transmission with the UE 101 by using a diversity transmission mode.
  • the first RRC 1021 is located in the first CU, and the first PDCP 1022, the first RLC 1023, the first MAC 1024, and the first PHY 1025 are located in the first DU.
  • the first RRC 1021 and the first PDCP 1022 are located in the first CU, and the first RLC 1023, the first MAC 1024, and the first PHY 1025 are located in the first DU; or, the first RRC 1021, the first PDCP 1022, and the first RLC 1023 are located.
  • the first MAC 1024 and the first PHY 1025 are located in the first DU; or, the first RRC 1021, the first PDCP 1022, the first RLC 1023, and the first MAC 1024 are located in the first CU, and the first PHY 1025 is located in the first DU.
  • the manner of protocol separation between the first CU and the plurality of first DUs may be different.
  • the second base station 103 includes a second RRC 1031, a second PDCP 1032, a second RLC 1033, and a second MAC 1034.
  • a second PHY 1035 a partial unit in the second base station 103 is located in the second CU, the remaining units in the second base station 103 are located in the second DU, and the second base station 103 may include one or more second DUs.
  • the second CU and the second DU are connected by a wired link or a wireless link.
  • the unit located in the second CU and the unit located in the second DU may be flexibly deployed according to radio conditions between the second DU and the UE 101, different UE 101 or different radio bearers of the UE 101, and the like.
  • the second DU indicates that the second CU performs data transmission with the UE 101 by using a diversity transmission manner.
  • the second RRC 1031 is located in the second CU, the second PDCP 1032, the second RLC 1033, the second MAC 1034, and the second PHY 1035 are located in the second DU; or the second RRC 1031 and the second PDCP 1032 are located in the second CU, and the second RLC 1033 The second MAC 1034 and the second PHY 1035 are located in the second DU; or the second RRC 1031, the second PDCP 1032, and the second RLC 1033 are located in the second CU, and the second MAC 1034 and the second PHY 1035 are located in the second DU; or, the second The RRC 1031, the second PDCP 1032, the second RLC 1033, and the second MAC 1034 are located in the second CU, and the second PHY 1035 is located in the second DU.
  • the protocol separation manner between the second CU and the plurality of second DUs may be different.
  • the first RRC 1021 (or the second RRC 1031) is configured to perform data broadcasting, paging, RRC connection management, security management, bearer management, and mobility management.
  • the first PDCP 1022 (or the second PDCP 1032) is used for head compression and security.
  • the first PDCP 1022 (or the second PDCP 1032) is used to encrypt, decrypt, integrity protect or verify the transmitted data.
  • the first RLC 1023 (or the second RLC 1033) is used to segment, cascade, or reorder the ARQ information.
  • the first MAC 1024 (or the second MAC 1034) is used for data scheduling, priority processing, and the like.
  • the first PHY 1025 (or the second PHY 1035) is used for waveform and multiple access, modulation, encoding, decoding, mapping of data information to radio resources, and the like.
  • the first base station 102 and the second base station 103 may be base stations of a Long Term Evolution (LTE) system or a future communication system; the first base station 102 and the second base station 103 may provide a low frequency cell, a high frequency cell, or an unlicensed spectrum ( Unlicensed spectrum).
  • LTE Long Term Evolution
  • Unlicensed spectrum Unlicensed spectrum
  • the first base station 102 and the second base station 103 may be fifth-generation mobile-generation (5G) base stations.
  • the UE 101 may be an LTE terminal or a next generation terminal; for example, the UE 101 may be a 5G terminal.
  • the UE 101 includes a first transceiver 1011, a first processor 1012, a first memory 1013, and a first bus 1014.
  • the first transceiver 1011, the first processor 1012, and the first memory 1013 communicate with each other through the first bus 1014; the first transceiver 1011 is used for communication between the UE 101 and the first base station 102, and the first memory 1013 is used for
  • the instructions are stored, the instructions including computer operating instructions, and the first processor 1012 executes the instructions stored in the first memory 1013 such that the UE 101 performs the method of data transmission described below.
  • a first base station 102 is provided according to an exemplary embodiment of the present invention.
  • the first base station 102 includes a second transceiver 1026, a second processor 1027, a second memory 1028, and a second bus. 1029.
  • the second transceiver 1026, the second processor 1027, and the second memory 1028 communicate with each other through the second bus 1029; the second transceiver 1026 is used for communication between the first base station 102 and the UE 101, and the second memory 1028 is used for communication between the first base station 102 and the UE 101.
  • the instructions are stored, the instructions including computer operating instructions, and the second processor 1027 executing the instructions stored in the second memory 1028 such that the first base station 102 performs the method of data transmission described below.
  • the embodiment of the invention provides a method for data transmission, which is applied between a UE, a first base station and a second base station.
  • the first base station and the second base station are base stations of the radio access network CU and the DU separation architecture, and the first base station and the second base station each include two DUs
  • the present invention is applied to the UE, the first CU of the first base station. Between two first DUs, a second CU of the second base station, and two second DUs.
  • the embodiment of the present invention is exemplified by two base stations or a CU of a base station and two DUs, and the present invention is not specifically limited. It can be understood that the embodiments of the present invention are also applicable to more base stations or CUs of one base station. Diversity transmission or offload transmission with more DUs. Referring to Figure 5, the method includes:
  • Step 301 The UE determines whether the same data is transmitted between the first base station and the second base station. If the UE transmits the same data between the first base station and the second base station, step 302 is performed, if the UE and the first base station and the second base station To transfer different data between them, go to step 304.
  • the step of the UE determining whether to transmit the same data between the first base station and the second base station may be implemented by the following first to third modes.
  • the UE determines whether the UE transmits the same data between the first base station and the second base station according to the radio condition of the current channel.
  • the first base station determines whether the UE transmits the same data between the UE and the first base station and the second base station according to the radio condition of the current channel, and notifies the UE of the result of the determination by using the configuration information.
  • the second base station determines whether the UE transmits the same data between the first base station and the second base station according to the radio condition of the current channel, and notifies the UE of the result of the determination by using the configuration information.
  • the configuration information includes a diversity mode or a split type, and the diversity mode Or the offload type is used to indicate that the UE transmits the same data between the first base station and the second base station.
  • the configuration information includes a diversity type or a split type, and the diversity type or the split The type is used to indicate that the UE transmits the same data between the first base station and the second base station.
  • this step can be:
  • the UE acquires a first radio condition of the current channel, and when the first radio condition satisfies the first preset condition, the UE transmits the same data between the first base station and the second base station; when the first radio condition meets the third preset condition The UE transmits different data between the first base station and the second base station.
  • the first wireless condition may be at least one of the following conditions:
  • Reference signal received power (RSRP) between the UE and the first base station Reference signal received power (RSRP) between the UE and the first base station, reference signal received quality (RSRQ) between the UE and the first base station, and between the UE and the first base station Channel quality indicator (CQI) of the radio channel, signal and noise-to-noise ratio (SINR) of the UE, signal noise ratio (SNR) of the UE, and hybrid automatic repeat request
  • RSRP Reference signal received power
  • RSRQ reference signal received quality
  • CQI Channel quality indicator
  • SINR signal noise-to-noise ratio
  • SNR signal noise ratio
  • hybrid automatic repeat request The number of statistics of the hybrid automatic retransmission request non acknowledgement (HARQ NACK) and the number of statistics of the automatic retransmission request non acknowledgement (ARQ NACK).
  • the UE may collect the UE to send to the first base station (or the second base station) within the first preset duration that is closest to the current time.
  • the number of statistics of the HARQ NACK; or, the UE counts the number of HARQ NACKs sent by the first base station (or the second base station) within the first preset duration that is closest to the current time.
  • the UE may collect the UE to send to the first base station (or the second base station) within a first preset duration that is closest to the current time.
  • ARQ NACK The number of statistics; or, the UE counts the number of statistics of the ARQ NACK sent by the first base station (or the second base station) within a first preset duration that is closest to the current time.
  • the first preset duration may be set and changed as needed.
  • the first preset duration is not specifically limited.
  • the first preset duration may be 5 hours or 8 hours, and the like.
  • the first preset condition may be at least one of the following conditions:
  • the RSRP is not greater than the first preset power
  • the RSRQ is not greater than the first preset value
  • the CQI is not greater than the second preset value
  • the SINR is not greater than the third preset value
  • the SNR is not greater than the fourth preset value
  • the statistics of the HARQ NACK are The number of statistics greater than the fifth preset value and the ARQ NACK is greater than the sixth preset value.
  • the third preset condition may be at least one of the following conditions:
  • the RSRP is greater than the first preset power, and is smaller than the third preset power
  • the RSRQ is greater than the first preset value and less than the thirteenth preset value
  • the CQI is greater than the second preset value, and is less than the fourteenth preset value
  • the SINR is greater than
  • the third preset value is less than the fifteenth preset value
  • the SNR is greater than the fourth preset value, and is less than the sixteenth preset value
  • the statistical quantity of the HARQ NACK is greater than the seventeenth preset value, and is not greater than the fifth
  • the preset number, the number of statistics of the ARQ NACK is greater than the eighteenth preset value, and is not greater than the sixth preset value.
  • the third preset power is greater than the first preset power
  • the thirteenth preset value is greater than the first preset value
  • the fourteenth preset value is greater than the second preset value
  • the fifteenth preset value is greater than the third preset value
  • the sixteenth preset value is greater than the fourth preset value
  • the seventeenth preset value is less than the fifth preset value
  • the eighteenth preset value is less than the sixth preset value.
  • the first preset power, the third preset power, the first preset value, the second preset value, the third preset value, the fourth preset value, the fifth preset value, and the sixth preset value The thirteenth preset value, the fourteenth preset value, the fifteenth preset value, the sixteenth preset value, the seventeenth preset value, and the eighteenth preset value may all be set and changed as needed.
  • the first preset power, the first preset value, the second preset value, the third preset value, the fourth preset value, the fifth preset value, and the sixth preset value are all No specific limitation.
  • this step can be:
  • the first base station acquires a second radio condition of the current channel, and when the second radio condition satisfies the second preset condition, the first base station determines to transmit the same data between the UE and the second base station, and sends the UE and the first base station to the UE.
  • the configuration information of the information of the same data is transmitted between the second base station (for convenience of distinction, the configuration information is referred to as the first configuration information) to trigger the UE to transmit the same data between the first base station and the second base station.
  • the UE receives the first configuration information sent by the first base station, and determines that the first configuration information includes information that the UE transmits the same data between the first base station and the second base station, and the UE transmits the same data between the first base station and the second base station. .
  • the first base station determines to transmit different data with the UE and the second base station, and sends, to the UE, information including the UE transmitting different data between the first base station and the second base station.
  • Second configuration information The UE receives the second configuration information sent by the first base station, and determines that the second configuration information includes the information that the UE transmits different data between the first base station and the second base station, and the UE transmits different data between the first base station and the second base station.
  • the first base station may directly send the first configuration information to the UE, or may send the first configuration information to the second base station, and the second base station forwards the first configuration information to the UE.
  • the first base station may directly send the second configuration information to the UE, or may send the second configuration information to the second base station, and the second base station forwards the second configuration information to the UE.
  • the second wireless condition may be at least one of the following conditions:
  • RSRP between the UE and the first base station
  • RSRQ between the UE and the first base station
  • no between the UE and the first base station The CQI of the line channel, the SINR of the UE, the SNR of the UE, the number of statistics of the HARQ NACK, and the number of statistics of the ARQ NACK.
  • the UE When the second radio condition is RSRP and/or CQI, the UE periodically sends a measurement report to the first base station when the reporting condition is reached, and the measurement report includes RSRP and/or CQI.
  • the first base station receives the measurement report reported by the UE, and obtains an RSRP and/or a CQI from the measurement report.
  • the measurement report may be sent to the first MAC included in the first base station; correspondingly, the first MAC receives the measurement report sent by the UE. Therefore, the first MAC determines, according to the measurement report, whether the UE transmits the same data between the first base station and the second base station.
  • the first MAC may report the measurement report to the first RRC, and the first RRC determines, according to the measurement report, whether the UE transmits the same data between the first base station and the second base station. See Figure 6.
  • the UE When the radio condition is the number of statistics of the HARQ NACK and/or the number of statistics of the ARQ NACK, the UE sends an RLC status report to the first base station when the data transmitted by the first base station fails, and the RLC status report includes the statistics of the HARQ NACK. The number of statistics and/or the number of ARQ NACKs.
  • the first base station receives the RLC status report sent by the UE, and obtains a statistical quantity of the HARQ NACK and/or a statistical quantity of the ARQ NACK from the RLC status report.
  • the RLC status report may be sent to the first RLC included in the first base station; correspondingly, the first RLC receives the RLC status report sent by the UE. Therefore, the first RLC determines whether the UE transmits the same data between the first base station and the second base station according to the RLC status report.
  • the first base station may count the second preset time period closest to the current time, the first base station to the UE (or the second base station) The number of statistics of the transmitted HARQ NACKs; or the number of statistics of the HARQ NACKs sent by the receiving UE (or the second base station) within the second preset duration that is the closest to the current time by the first base station.
  • the first base station may count the second preset duration that is closest to the current time, and the first base station sends the UE to the UE (or the second base station). The number of statistics of the transmitted ARQ NACKs; or the number of statistics of the ARQ NACKs sent by the receiving UE (or the second base station) within the second preset duration that is the closest to the current time by the first base station.
  • the second preset duration may be set and changed as needed.
  • the second preset duration is not specifically limited; for example, the second preset duration may be 5 hours or 8 hours.
  • the second preset condition may be at least one of the following conditions:
  • the RSRP is not greater than the second preset power
  • the RSRQ is not greater than the seventh preset value
  • the CQI is not greater than the eighth preset value
  • the SINR is not greater than the ninth preset value
  • the SNR is not greater than the tenth preset value
  • the statistics of the HARQ NACK are The number of statistics greater than the eleventh preset value and the ARQ NACK is greater than the twelfth preset value.
  • the fourth preset condition may be at least one of the following conditions:
  • the RSRP is greater than the second preset power, and is less than the fourth preset power
  • the RSRQ is greater than the seventh preset value, and is less than the nineteenth preset value
  • the CQI is greater than the eighth preset value, and is less than the twentieth preset value
  • the SINR is greater than the ninth preset value, and is smaller than the 21st preset value
  • the SNR is greater than the tenth preset value, and is less than the second preset value
  • the statistical quantity of the HARQ NACK is greater than the twenty-third preset value.
  • the number of statistics of the ARQ NACK is greater than the twenty-fourth preset value, and is not greater than the twelfth preset value.
  • the fourth preset power is greater than the second preset power
  • the nineteenth preset value is greater than the seventh preset value
  • the twentieth preset number The value is greater than the eighth preset value
  • the twentieth preset value is greater than the ninth preset value
  • the twenty-first preset value is greater than the tenth preset value
  • the twenty-second preset value is greater than the tenth preset value
  • Twenty-three preset values are smaller than the eleventh preset value
  • the twenty-fourth preset value is smaller than the twelfth preset value.
  • this step can be:
  • the second base station acquires a third radio condition of the current channel, and when the third radio condition satisfies the fifth preset condition, the second base station determines to transmit the same data between the UE and the first base station, and sends the UE and the first base station to the UE.
  • Third configuration information for transmitting information of the same data with the second base station to trigger transmission of the same data between the UE and the first base station and the second base station.
  • the UE receives the third configuration information sent by the second base station, and determines that the third configuration information includes the information that the UE transmits the same data between the first base station and the second base station, and the UE transmits the same data between the first base station and the second base station.
  • the second base station determines to transmit different data between the UE and the first base station, and sends, to the UE, information that transmits different data between the UE and the first base station and the second base station.
  • Fourth configuration information The UE receives the fourth configuration information sent by the second base station, and determines that the fourth configuration information includes the information that the UE transmits different data between the first base station and the second base station, and the UE transmits different data between the first base station and the second base station.
  • the second base station may directly send the third configuration information or the fourth configuration information to the UE, or may send the third configuration information or the fourth configuration information to the first base station, where the first base station sends the third configuration information or The fourth configuration information is forwarded to the UE.
  • the third MAC or the third RLC included by the UE indicates the third RRC or the third PDCP included by the UE and the first base station.
  • the same data or different data is transmitted between the second base station.
  • the UE determines whether to transmit the same data between the first base station and the second base station; before the UE receives the data transmitted by the first base station, the UE needs to determine and the first Whether the same data is transmitted between the base station and the second base station.
  • Step 302 When the UE transmits the same data between the first base station and the second base station, the UE transmits the to-be-transmitted data of the UE to the first base station by using the first logical channel (for convenience of distinguishing, the data to be transmitted at the location is called The first data to be transmitted).
  • the UE determines that, when transmitting the same data between the first base station and the second base station, the UE transmits the first to-be-transmitted data of the UE to the first base station by using the first logical channel, and the first base station receives the data by using the first logical channel.
  • the UE may transmit the same or different data between the first base station and the second base station in downlink transmission.
  • the UE determines that, in the downlink transmission, when the same data is transmitted between the first base station and the second base station, the first base station transmits the first to-be-transmitted data of the UE to the UE by using the first logical channel, and the UE receives the first through the first logical channel.
  • the UE may transmit the same or different data between the first base station and the second base station in uplink transmission.
  • the first to-be-transmitted data may be user data, an RRC signaling RRC message, a PDCP PDL message, a MAC PDU message, or a physical layer code modulated data.
  • the UE establishes a first logical channel with the first base station and establishes a second logical channel with the second base station.
  • the UE performs data transmission with the first base station by establishing a first logical channel on the first DU included in the first base station.
  • Step 303 The UE transmits the first to-be-transmitted data to the second base station by using the second logical channel, and ends.
  • the UE determines that, in the uplink transmission, when the same data is transmitted between the first base station and the second base station, the UE passes the second logic.
  • the channel transmits the first to-be-transmitted data to the second base station, and the second base station receives the first to-be-transmitted data transmitted by the UE by using the second logical channel, and transmits the first to the first base station by using an interface between the second base station and the first base station.
  • the UE may transmit the same or different data between the first base station and the second base station in downlink transmission.
  • the UE Determining, by the UE, that the first base station transmits the first to-be-transmitted data to the second base station by using an interface between the first base station and the second base station when transmitting the same data between the first base station and the second base station;
  • An interface between the first base station and the second base station receives the first to-be-transmitted data transmitted by the first base station, and transmits the first to-be-transmitted data to the UE by using the second logical channel;
  • the UE receives the second through the second logical channel
  • the UE may transmit the same or different data between the first base station and the second base station in uplink transmission.
  • the interface between the first base station and the second base station needs to be established.
  • the interface may be an X2 interface, or may be another interface on the base station, or may be an interface evolved on the basis of the X2 interface.
  • the interface between the base stations is not specifically limited.
  • an embodiment of the present invention provides a user plane protocol stack between a first base station and a second base station.
  • an embodiment of the present invention provides a first base station and a second base station.
  • the control plane protocol stack, the first PDCP in the first base station establishes a connection with the second RLC in the second base station through the X2 interface, thereby performing data transmission through the interface.
  • the second logical channel between the UE and the second base station may be established in advance, or the second logical channel may be established when data is transmitted.
  • Step 304 When the UE transmits different data between the first base station and the second base station, the UE transmits the second to-be-transmitted data of the UE with the first base station by using the first logical channel.
  • the UE transmits the second to-be-transmitted data of the UE to the first base station by using the first logical channel; the first base station receives the second to-be-transmitted data of the UE transmitted by the UE by using the first logical channel.
  • the first base station transmits the second to-be-transmitted data of the UE to the UE by using the first logical channel, and the UE receives the second to-be-transmitted data of the UE transmitted by the first base station by using the first logical channel.
  • the second to-be-transmitted data may be user data, an RRC signaling RRC message, a PDCP PDL message, a MAC PDU message, or a physical layer code modulated data.
  • the UE and the first base station transmit data (the first to-be-transmitted data or the second to-be-transmitted data)
  • the data is transmitted through the first logical channel and the wireless interface between the UE and the first base station.
  • Step 305 The UE transmits the third to-be-transmitted data of the UE with the second base station by using the second logical channel.
  • the UE transmits the third to-be-transmitted data of the UE to the second base station by using the second logical channel, and the second base station receives the third to-be-transmitted data of the UE transmitted by the UE through the second logical channel, and passes the first base station. And transmitting, by the interface between the second base station, the third to-be-transmitted data to the first base station, where the third to-be-transmitted data may be user data, RRC signaling RRC message, PDCP PDL message, MAC PDU message, or physical layer code modulation The data.
  • the first base station transmits the third to-be-transmitted data to the second base station through the interface between the first base station and the second base station; the second base station receives the first through the interface between the first base station and the second base station.
  • the third to-be-transmitted data transmitted by the base station transmits the third to-be-transmitted data of the UE to the UE through the second logical channel; the UE receives the third to-be-transmitted data of the UE transmitted by the second base station by using the second logical channel, and the third
  • the data to be transmitted may be user data, RRC signaling RRC message, PDCP PDL message, MAC PDU message or physical layer code modulated data.
  • the first base station and the second base station transmit data (the first to-be-transmitted data or the third to-be-transmitted data)
  • the first PDCP included in the first base station sends the data to the second RLC included in the second base station;
  • the second RLC included in the second base station sends the data to the first PDCP included in the first base station.
  • the number of transmissions between the UE and the second base station According to the first data to be transmitted or the third data to be transmitted, data transmission is performed through the second logical channel and the wireless interface between the UE and the second base station.
  • the UE when transmitting the same data between the UE and the first base station and the second base station, transmits the first to-be-transmitted data of the UE with the first base station by using the first logical channel with the first base station. Transmitting, by the second logical channel with the second base station, the first to-be-transmitted data with the second base station, so that the second base station forwards the first to-be-transmitted data to the first base station;
  • the logical channel transmits the same data as the UE, thereby improving the reliability of the wireless link and reducing the delay of data transmission.
  • An embodiment of the present invention provides a data transmission method, where the method is applied between a UE, a first base station, and a second base station.
  • the method includes:
  • Step 401 The first base station determines whether the same data is transmitted between the UE and the second base station. If the first base station transmits the same data between the UE and the second base station, step 402 is performed; the first base station and the UE and the second base station Step 404 is performed to transfer different data.
  • step 301 is the same as the second implementation of step 301, and details are not described herein again.
  • the first configuration information is sent to the UE, where the first configuration information is used to trigger the UE to transmit the same data between the first base station and the second base station. It should be noted that, in this step, the first configuration information is sent to the UE by the first MAC included in the first base station.
  • Step 402 When the first base station transmits the same data between the UE and the second base station, the first base station transmits the first to-be-transmitted data of the UE with the UE by using the first logical channel with the UE.
  • Step 403 The first base station transmits the first to-be-transmitted data to the second base station by using the interface between the first base station and the second base station, so that the second base station transmits the first to-be-transmitted data with the UE by using the second logic signal. End.
  • the embodiment of the present invention can be applied to the handover scenario.
  • the step can be implemented by the following steps 4031 and 4032, including:
  • the first base station sends a handover request message to the second base station, where the handover request message indicates that the second base station configures the second logical channel for the UE.
  • the second base station receives the handover request message sent by the first base station, establishes a second logical channel with the UE according to the handover request message, and sends a handover response message to the first base station, where the handover response message indicates that the second base station has configured the UE The second logical channel.
  • the first base station receives the handover response message sent by the second base station, and transmits the first to-be-transmitted data to the second base station by using an interface between the first base station and the second base station according to the handover response message.
  • Step 404 When the first base station transmits different data between the UE and the second base station, the first base station transmits the second to-be-transmitted data of the UE with the UE by using the first logical channel.
  • Step 405 The first base station transmits the third to-be-transmitted data of the UE to the second base station by using an interface between the first base station and the second base station, so that the second base station and the UE transmit the third to-be-transmitted data.
  • the first base station may transmit the same data between the UE and the second base station, that is, perform data transmission according to the foregoing steps 402-403; during downlink transmission, the first base station may cooperate with the UE and The same or different data is transmitted between the second base stations, that is, data transmission can be performed according to the above steps 402-403 or 404-405.
  • the first base station may transmit the same data between the UE and the second base station, and during uplink transmission, that is, according to the above steps 402-403, the first base station may be connected with the UE and the second base station. Transfer the same or not With the same data, data transmission can be performed according to the above steps 402-403 or 404-405.
  • the first to-be-transmitted data is transmitted to the UE through the first logical channel, and the interface between the second base station and the second base station is used. Transmitting, by the base station, the first to-be-transmitted data, so that the second base station transmits the first to-be-transmitted data with the UE by using the second logical channel with the UE; and transmitting the same data to the UE by using the first logical channel and the second logical channel, whereby the reliability of the wireless link is improved and the delay of data transmission is reduced.
  • FIG. 10 is a structural block diagram of an apparatus for data transmission according to an embodiment of the present invention.
  • the apparatus may be implemented as part or all of a user equipment by software, hardware, or a combination of both.
  • the apparatus includes a first transmission unit 501 and a second transmission unit 502.
  • the first transmission unit 501 is configured to perform step 302 and its alternatives in the foregoing embodiments.
  • the second transmission unit 502 is configured to perform step 303 and its alternatives in the foregoing embodiments.
  • the apparatus further includes: a receiving unit 503 and a first determining unit 504.
  • the receiving unit 503 is configured to perform the configuration information sent by the first base station and its optional solution in step 301 in the foregoing embodiment.
  • the first determining unit 504 is configured to perform, according to the configuration information, in step 301 in the foregoing embodiment, determining whether to transmit the same data and the alternative between the first base station and the second base station.
  • the apparatus further includes: a second determining unit 505.
  • the second determining unit 505 is configured to perform, according to the first radio condition of the current channel, in step 301 in the foregoing embodiment, determining whether to transmit the same data and the alternative between the first base station and the second base station.
  • FIG. 13 is a structural block diagram of an apparatus for data transmission according to an embodiment of the present invention.
  • the apparatus may be implemented as part or all of the first base station by software, hardware, or a combination of both.
  • the apparatus includes a third transmission unit 601 and a fourth transmission unit 602.
  • the third transmission unit 601 is configured to perform step 402 and its alternatives in the foregoing embodiments.
  • the fourth transmission unit 602 is configured to perform step 403 and its alternatives in the foregoing embodiments.
  • the apparatus further includes: a third determining unit 603.
  • the third determining unit 603 is configured to perform step 401 and its alternatives in the foregoing embodiment.
  • the apparatus further includes: a transmitting unit 604.
  • the sending unit 604 is configured to send configuration information and an optional solution to the UE in step 401 in the foregoing embodiment.
  • the device for data transmission provided by the foregoing embodiment is only illustrated by the division of each functional module. In actual applications, the function distribution may be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above.
  • the apparatus for data transmission provided by the foregoing embodiment belongs to the same concept as the method embodiment of data transmission, and the specific The implementation process is detailed in the method embodiment, and will not be described here.
  • FIG. 16 is a structural block diagram of a system chip according to an embodiment of the present invention. The method is applied to a UE.
  • the chip is referred to as a first chip, and the first chip includes: The input/output interface 701, the at least one third processor 702, the third memory 703, and the third bus 704; the third input/output interface 701 is connected to the at least one third processor 702 and the third memory 703 via the third bus 704,
  • the three input and output interface 701 is used for communication between the UE and the base station, and the at least one third processor 702 executes an instruction stored in the third memory 703, so that the UE performs the above method of transmitting data.
  • FIG. 17 is a structural block diagram of a system chip according to an embodiment of the present invention, which is applied to a base station (first base station). To facilitate distinguishing from a chip applied in a UE, the chip is referred to as a second chip, and second.
  • the chip includes: a second input/output interface 801, at least one fourth processor 802, a fourth memory 803, and a fourth bus 804; the fourth input output interface 801 passes through the fourth bus 804 and the at least one fourth processor 802 and the fourth
  • the memory 803 is connected, the fourth input/output interface 801 is used for communication between the base station and the UE, and the at least one fourth processor 802 executes an instruction stored in the fourth memory 803, so that the base station performs the above method of transmitting data.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明公开了一种数据传输的方法、装置、用户设备和基站，属于通信技术领域。方法包括：用户设备UE与所述UE接入的第一基站和所述UE接入的第二基站之间传输相同数据时，所述UE通过与所述第一基站之间的第一逻辑信道，与所述第一基站传输所述UE的待传输数据；所述UE通过与所述第二基站之间的第二逻辑信道，与所述第二基站传输所述待传输数据，所述第一逻辑信道与所述第二逻辑信道关联所述UE的同一个无线承载。本发明中，由于通过第一逻辑信道和第二逻辑信道与UE传输相同的数据，从而提高了无线链路可靠性，并且减少了数据传输的时延。

Description

数据传输的方法、装置、用户设备和基站
本申请要求于2016年10月25日提交国家知识产权局、申请号为201610934624.X、发明名称为“数据传输的方法、装置、用户设备和基站”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，特别涉及一种数据传输的方法、装置、用户设备和基站。
背景技术
在目前的无线通信系统中，为了解决用户设备(User Equipment，UE)的移动性问题，并为UE提供更大带宽，UE可以同时接入多个基站，从而实现多个基站同时为UE服务，此时UE如何与多个基站进行数据传输是业界关注的重点。
以UE同时接入两个基站为例进行说明，根据两个基站的角色，将两个基站分别称为主基站和从基站；UE向主基站传输数据时，UE可以直接将数据传输给主基站，或者先将数据传输给从基站，由从基站转发给主基站。同样，主基站向UE传输数据时，主基站可以直接将数据传输给UE，也可以先将数据传输给从基站，由从基站转发给主基站。当数据传输失败时，按以上过程进行重传。
在实现本发明的过程中，发明人发现现有技术至少存在以下问题：
当由于UE与主基站之间的无线信道条件较差或UE与从基站之间的无线信道条件较差，导致数据传输失败时，可能需要多次重传才能传输成功，多次重传会导致数据传输的网络时延大。
发明内容
为了解决现有技术的问题，本发明提供了一种数据传输的方法、装置、用户设备和基站。技术方案如下：
第一方面，本发明实施例提供了一种数据传输的方法，所述方法包括：
用户设备UE与所述UE接入的第一基站和所述UE接入的第二基站之间传输相同数据时，所述UE通过与所述第一基站之间的第一逻辑信道，与所述第一基站传输所述UE的待传输数据；
所述UE通过与所述第二基站之间的第二逻辑信道，与所述第二基站传输所述待传输数据，所述第一逻辑信道与所述第二逻辑信道关联所述UE的同一个无线承载。
在本发明实施例中，由于UE通过第一逻辑信道与第一基站以及UE通过第二逻辑信道与第二基站之间传输相同的数据，从而提高了无线链路可靠性，并且减少了数据传输的时延。
在一个可能的设计中，所述方法还包括：
所述UE接收所述第一基站发送的配置信息，所述配置信息包括所述UE与所述第一基 站和所述第二基站之间传输数据的方式的信息；
当所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输相同数据的信息时，所述UE与所述第一基站和所述第二基站之间传输相同数据。
在本发明实施例中，第一基站与第一基站和第二基站之间传输相同数据时，向UE发送包括UE与第一基站和第二基站之间传输相同数据的信息的配置信息。从而实现第一基站触发UE与第一基站和第二基站之间传输相同数据，增加了触发方式。
在另一个可能的设计中，当所述第一逻辑信道和所述第二逻辑信道均为信令无线承载SRB时，所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输相同数据的信息是分集模式或者分流类型。
在另一个可能的设计中，当所述第一逻辑信道和所述第二逻辑信道均为数据无线承载DRB时，所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输相同数据的信息是分集类型或者分流类型。
在另一个可能的设计中，所述方法还包括：
所述UE获取当前信道的第一无线条件，当所述第一无线条件满足第一预设条件时，所述UE与所述第一基站和所述第二基站之间传输相同数据。
在本发明实施例中，UE根据当前信道的第一无线条件，确定是否与第一基站和第二基站之间传输相同数据，从而实现在第一无线条件不好时，触发与第一基站和第二基站之间传输相同数据，进而提高无线链路可靠性，并减少了数据传输的时延。
在另一个可能的设计中，所述第一预设条件包括以下条件中的至少一个条件：
所述UE与所述第一基站之间的参考信号接收功率RSRP不大于第一预设功率、所述UE与所述第一基站之间的参考信号接收质量RSRQ不大于第一预设数值、所述UE与所述第一基站之间的无线信道的信道质量指示CQI不大于第二预设数值、所述UE的信号与干扰加噪声比SINR不大于第三预设数值、所述UE的信噪比SNR不大于第四预设数值、混合自动重传请求HARQ非确认信息NACK的统计数量大于第五预设数值、自动重传请求ARQ非确认信息NACK的统计数量大于第六预设数值。
在本发明实施例中，第一无线条件为任一表征无线条件的信息，相应的，第一预设条件为任一表征无线条件的信息对应的条件，从而丰富了触发UE与第一基站和第二基站之间传输相同数据的条件。
在另一个可能的设计中，所述UE与所述UE接入的第一基站和所述UE接入的第二基站之间传输相同数据时，所述UE通过与所述第一基站之间的第一逻辑信道，与所述第一基站传输所述UE的数据，包括：
所述UE向所述第一基站传输数据，且所述UE与所述第一基站和所述第二基站之间传输相同数据时，所述UE通过所述第一逻辑信道，与所述第一基站传输所述UE的待传输数据；或者，
所述UE接收所述第一基站传输的数据，且所述UE与所述第一基站和所述第二基站之间传输相同数据时，所述UE通过所述第一逻辑信道，与所述第一基站传输所述UE的待传输数据。
在本发明实施例中，UE在上行传输时，UE与第一基站和第二基站之间传输相同的数据，UE在下行传输时，可以与第一基站和第二基站之间传输相同的数据或者不同的数据。 UE在下行传输时，UE与第一基站和第二基站之间传输相同的数据，UE在上行传输时，可以与第一基站和第二基站之间传输相同的数据或者不同的数据。从而可以根据上行或下行的具体情况，选择使用相同或不同的传输方式，提高本方案的适用性。
在另一个可能的设计中，所述第一基站和/或所述第二基站为无线接入网集中式处理单元CU与分布式处理单元DU分离架构的基站。
在本发明实施例中，第一基站可以为传统一体化基站，也可以为无线接入网CU-DU分离架构的基站；第二基站可以为传统一体化基站，也可以为无线接入网CU-DU分离架构的基站，从而丰富了本案的应用场景。
在另一个可能的设计中，UE与第一基站和第二基站之间传输相同数据的传输方式为分集传输方式，所述分集传输方式包括分集类型或分集模式。
在本发明实施例中，分集传输方式可以为分集类型，也可以为分集模式，从而丰富了分集传输方式。
第二方面，本发明实施例提供了一种数据传输的方法，所述方法包括：
第一基站与用户设备UE和所述UE接入的第二基站之间传输相同数据时，所述第一基站通过与所述UE之间的第一逻辑信道，与所述UE传输所述UE的待传输数据；
所述第一基站通过与所述第二基站之间的接口，与所述第二基站传输所述待传输数据，以使所述第二基站通过与所述UE之间的第二逻辑信道，与所述UE传输所述待传输数据，所述第一逻辑信道与所述第二逻辑信道关联所述UE的同一个无线承载。
在本发明实施例中，第一基站与UE和第二基站之间传输相同数据时，通过与UE之间的第一逻辑信道，与UE传输UE的待传输数据，通过与第二基站之间的第一基站与第二基站之间的接口，与第二基站传输所述待传输数据，以使第二基站通过与UE之间的第二逻辑信道，与UE传输所述待传输数据；由于通过第一逻辑信道和第二逻辑信道与UE传输相同的数据，从而提高了无线链路可靠性，并且减少了数据传输的时延。
在一个可能的设计中，所述方法还包括：
所述第一基站获取当前信道的第二无线条件，当所述第二无线条件满足第二预设条件时，所述第一基站与所述UE和所述第二基站之间传输相同数据。
在本发明实施例中，第一基站根据当前信道的第二无线条件，确定是否与UE和第二基站之间传输相同数据，从而实现在第二无线条件不好时，触发与UE和第二基站之间传输相同数据，进而提高无线链路的可靠性，并减少了数据传输的时延。
在另一个可能的设计中，所述第二预设条件包括以下条件中的至少一个条件：
所述UE与所述第一基站之间的参考信号接收功率RSRP不大于第二预设功率、所述UE与所述第一基站之间的参考信号接收质量RSRQ不大于第七预设数值、所述UE与所述第一基站之间的无线信道的信道质量指示CQI不大于第八预设数值、所述UE的信号与干扰加噪声比SINR不大于第九预设数值、所述UE的信噪比SNR不大于第十预设数值、混合自动重传请求HARQ非确认信息NACK的统计数量大于第十一预设数值、自动重传请求ARQ非确认信息NACK的统计数量大于第十二预设数值。
在本发明实施例中，第二无线条件为任一表征无线条件的信息，相应的，第二预设条件为任一表征无线条件的信息对应的条件，从而丰富了触发分集UE与第一基站和第二基站 之间传输相同数据的条件。
在另一个可能的设计中，所述方法还包括：
所述第一基站向所述UE发送配置信息，所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输数据的方式的信息。
在本发明实施例中，第一基站确定与UE和第二基站之间传输相同数据时，向UE发送配置信息，以触发UE与第一基站和第二基站之间传输相同数据。从增加了触发方式。
在另一个可能的设计中，当所述第一逻辑信道和所述第二逻辑信道均为信令无线承载SRB时，所述配置信息包括分集模式或者分流类型。
在一个可能的设计中，当所述第一逻辑信道和所述第二逻辑信道均为数据无线承载DRB时，所述配置信息包括分集类型或者分流类型。
在另一个可能的设计中，所述第一基站通过与所述UE接入的第二基站之间的接口，与所述第二基站传输所述待传输数据，包括：
所述第一基站向所述第二基站发送切换请求消息，所述切换请求消息指示所述第二基站为所述UE配置所述第二逻辑信道；
所述第一基站接收所述第二基站发送的切换响应消息，根据所述切换响应消息，通过与所述UE接入的第二基站之间的接口，与所述第二基站传输所述待传输数据。
在本发明实施例中，可以应用在切换场景下，增加了本案的应用场景。
在另一个可能的设计中，所述第一基站与用户设备UE和所述UE接入的第二基站之间传输相同数据时，所述第一基站通过与所述UE之间的第一逻辑信道，与所述UE传输所述UE的数据，包括：
所述第一基站向所述UE传输数据，且所述第一基站与所述UE和所述第二基站之间传输相同数据时，所述第一基站通过所述第一逻辑信道，与所述UE传输所述UE的待传输数据；或者，
所述第一基站接收所述UE传输的数据，且所述第一基站与所述UE和所述第二基站之间传输相同数据时，所述第一基站通过所述第一逻辑信道，与所述UE传输所述UE的待传输数据。
在本发明实施例中，第一基站在上行传输时，第一基站与UE和第二基站之间传输相同的数据，第一基站在下行传输时，可以与UE和第二基站之间传输相同的数据或者不同的数据。第一基站在下行传输时，第一基站与UE和第二基站之间传输相同的数据，第一基站在上行传输时，可以与UE和第二基站之间传输相同的数据或者不同的数据。从而可以根据上行或下行的具体情况，选择使用相同或不同的传输方式，提高本方案的适用性。
在另一个可能的设计中，所述第一基站为无线接入网集中式处理单元CU与分布式处理单元DU分离架构的基站。
在本发明实施例中，第一基站可以为传统一体化基站，也可以为无线接入网CU-DU分离架构的基站，从而丰富了本案的应用场景。
在另一个可能的设计中，第一基站与UE和第二基站之间传输相同数据的传输方式为分集传输方式，所述分集传输方式包括分集类型或分集模式。
在本发明实施例中，分集传输方式可以为分集类型，也可以为分集模式，从而丰富了分集传输方式。
第三方面，本发明实施例提供了一种数据传输的装置，所述装置包括：
第一传输单元，用于与用户设备UE接入的第一基站和所述UE接入的第二基站之间传输相同数据时，通过与所述第一基站之间的第一逻辑信道，与所述第一基站传输所述UE的待传输数据；
第二传输单元，用于通过与所述第二基站之间的第二逻辑信道，与所述第二基站传输所述待传输数据，所述第一逻辑信道与所述第二逻辑信道关联所述UE的同一个无线承载。
在一个可能的设计中，所述装置还包括：
接收单元，用于接收所述第一基站发送的配置信息，所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输数据的方式的信息；
当所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输相同数据的信息时，第一确定单元，用于与所述第一基站和所述第二基站之间传输相同数据。
在另一个可能的设计中，当所述第一逻辑信道和所述第二逻辑信道均为信令无线承载SRB时，所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输相同数据的信息是分集模式或者分流类型。
在另一个可能的设计中，当所述第一逻辑信道和所述第二逻辑信道均为数据无线承载DRB时，所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输相同数据的信息是分集类型或者分流类型。
在另一个可能的设计中，所述装置还包括：
第二确定单元，用于获取当前信道的第一无线条件，当所述第一无线条件满足第一预设条件时，与所述第一基站和所述第二基站之间传输相同数据。
在另一个可能的设计中，所述第一预设条件包括以下条件中的至少一个条件：
所述UE与所述第一基站之间的参考信号接收功率RSRP不大于第一预设功率、所述UE与所述第一基站之间的参考信号接收质量RSRQ不大于第一预设数值、所述UE与所述第一基站之间的无线信道的信道质量指示CQI不大于第二预设数值、所述UE的信号与干扰加噪声比SINR不大于第三预设数值、所述UE的信噪比SNR不大于第四预设数值、混合自动重传请求HARQ非确认信息NACK的统计数量大于第五预设数值、自动重传请求ARQ非确认信息NACK的统计数量大于第六预设数值。
在另一个可能的设计中，所述第一传输单元，还用于向所述第一基站传输数据，且与所述第一基站和所述第二基站之间传输相同数据时，通过所述第一逻辑信道，与所述第一基站传输所述UE的待传输数据；
所述第一传输单元，还用于接收所述第一基站传输的数据，且与所述第一基站和所述第二基站之间传输相同数据时，通过所述第一逻辑信道，与所述第一基站传输所述UE的待传输数据。
在另一个可能的设计中，所述第一基站和/或所述第二基站为无线接入网集中式处理单元CU与分布式处理单元DU分离架构的基站。
在另一个可能的设计中，与第一基站和第二基站之间传输相同数据的传输方式为分集传输方式，所述分集传输方式包括分集类型或分集模式。
第四方面，本发明实施例提供了一种数据传输的装置，所述装置包括：
第三传输单元，用于与用户设备UE和所述UE接入的第二基站之间传输相同数据时，通过与所述UE之间的第一逻辑信道，与所述UE传输所述UE的待传输数据；
第四传输单元，用于通过与所述第二基站之间的接口，与所述第二基站传输所述待传输数据，以使所述第二基站通过与所述UE之间的第二逻辑信道，与所述UE传输所述待传输数据，所述第一逻辑信道与所述第二逻辑信道关联所述UE的同一个无线承载。
在一个可能的设计中，所述装置还包括：
第三确定单元，用于获取当前信道的第二无线条件，当所述第二无线条件满足第二预设条件时，与所述UE和所述第二基站之间传输相同数据。
在另一个可能的设计中，所述第二预设条件包括以下条件中的至少一个条件：
所述UE与所述装置之间的参考信号接收功率RSRP不大于第二预设功率、所述UE与所述装置之间的参考信号接收质量RSRQ不大于第七预设数值、所述UE与所述装置之间的无线信道的信道质量指示CQI不大于第八预设数值、所述UE的信号与干扰加噪声比SINR不大于第九预设数值、所述UE的信噪比SNR不大于第十预设数值、混合自动重传请求HARQ非确认信息NACK的统计数量大于第十一预设数值、自动重传请求ARQ非确认信息NACK的统计数量大于第十二预设数值。
在另一个可能的设计中，所述装置还包括：
发送单元，用于向所述UE发送配置信息，所述配置信息包括所述UE与所述装置和所述第二基站之间传输数据的方式的信息。
在另一个可能的设计中，当所述第一逻辑信道和所述第二逻辑信道均为信令无线承载SRB时，所述配置信息包括分集模式或者分流类型。
在另一个可能的设计中，当所述第一逻辑信道和所述第二逻辑信道均为数据无线承载DRB时，所述配置信息包括分集类型或者分流类型。
在另一个可能的设计中，所述第四传输单元，还用于向所述第二基站发送切换请求消息，所述切换请求消息指示所述第二基站为所述UE配置所述第二逻辑信道；接收所述第二基站发送的切换响应消息，根据所述切换响应消息，通过与所述UE接入的第二基站之间的接口，与所述第二基站传输所述待传输数据。
在另一个可能的设计中，所述第三传输单元，还用于向所述UE传输数据，且与所述UE和所述第二基站之间传输相同数据时，通过所述第一逻辑信道，与所述UE传输所述UE的待传输数据；或者，
所述第三传输单元，还用于接收所述UE传输的数据，且与所述UE和所述第二基站之间传输相同数据时，通过所述第一逻辑信道，与所述UE传输所述UE的待传输数据。
在另一个可能的设计中，所述装置为无线接入网集中式处理单元CU与分布式处理单元DU分离架构的基站。
在另一个可能的设计中，与UE和第二基站之间传输相同数据的传输方式为分集传输方式，所述分集传输方式包括分集类型或分集模式。
第五方面，本发明实施例提供了一种用户设备UE，所述UE包括：收发器、处理器、总线和存储器，所述收发器、所述处理器、所述存储器通过所述总线相互通信，所述收发 器用于所述UE和基站之间的通信，所述处理器执行所述存储器中存储的指令，使得所述UE执行如上述第一方面或第一方面中任意一种可能的实现方式所提供的传输数据的方法。
第六方面，本发明实施例提供了一种基站，所述基站包括：收发器、处理器、总线和存储器，所述收发器、所述处理器、所述存储器通过所述总线相互通信，所述收发器用于所述基站和用户设备UE之间的通信，所述处理器执行所述存储器中存储的指令，使得所述基站执行如上述第二方面或第二方面中任意一种可能的实现方式所提供的传输数据的方法。
第七方面，本发明实施例提供了一种系统芯片，应用于用户设备UE中，所述芯片包括：输入输出接口、至少一个处理器、存储器和总线；所述输入输出接口通过所述总线与所述至少一个处理器和所述存储器相连，所述输入输出接口用于所述UE与基站之间的通信，所述至少一个处理器执行所述存储器中存储的指令，使得所述UE执行如上述第一方面或第一方面中任意一种可能的实现方式所提供的传输数据的方法。
第八方面，本发明实施例提供了一种系统芯片，应用于基站中，所述芯片包括：输入输出接口、至少一个处理器、存储器和总线；所述输入输出接口通过所述总线与所述至少一个处理器和所述存储器相连，所述输入输出接口用于所述基站与用户设备UE之间的通信，所述至少一个处理器执行所述存储器中存储的指令，使得所述基站执行如上述第二方面或第二方面中任意一种可能的实现方式所提供的传输数据的方法。
第九方面，本发明实施例提供了一种计算机存储介质，用于存储为UE所用的计算机软件指令，其包含用于执行如上述方面为UE所设计的程序。
第十方面，本发明实施例提供了一种计算机存储介质，用于存储为第一基站所用的计算机软件指令，其包含用于执行如上述方面为第一基站所设计的程序。
上述本发明实施例第二到第十方面所获得的技术效果与第一方面中对应的技术手段获得的技术效果近似，在这里不再赘述。
综上所述，本发明实施例提供的技术方案带来的有益效果是：
在本发明实施例中，UE通过第一逻辑信道与第一基站传输UE的待传输数据，通过第二逻辑信道与第二基站传输所述待传输数据，以使第二基站将所述待传输数据转发给第一基站；由于UE通过第一逻辑信道和第二逻辑信道传输相同的数据，从而提高了无线链路可靠性，并且减少了数据传输的时延。
附图说明
图1是本发明实施例提供的一种数据传输的系统架构图；
图2是本发明实施例提供的一种第一基站的结构示意图；
图3是本发明实施例提供的一种UE的结构示意图；
图4是本发明实施例提供的另一种第一基站的结构示意图；
图5是本发明实施例提供的一种数据传输的方法流程图；
图6是本发明实施例提供的一种UE与第一基站传输测量报告的示意图；
图7是本发明实施例提供的一种第一基站和第二基站之间的用户面协议栈的结构示意图；
图8是本发明实施例提供的一种第一基站和第二基站之间的控制面协议栈的结构示意图；
图9是本发明实施例提供的另一种数据传输的方法流程图；
图10是本发明实施例提供的一种数据传输的装置方框图；
图11是本发明实施例提供的另一种数据传输的装置方框图；
图12是本发明实施例提供的另一种数据传输的装置方框图；
图13是本发明实施例提供的另一种数据传输的装置方框图；
图14是本发明实施例提供的另一种数据传输的装置方框图；
图15是本发明实施例提供的另一种数据传输的装置方框图；
图16是本发明实施例提供的一种第一芯片的方框图；
图17是本发明实施例提供的一种第二芯片的方框图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
本发明实施例主要应用在高频小区的场景、超高可靠超低时延通信(ultra reliable and low latency communication，URLLC)通信场景、或其它对无线链路可靠性和时延要求较高的场景，例如，切换场景。当逻辑信道的无线条件不好时，可能导致数据传输失败的问题，而依赖于重传进行恢复，将导致数据传输延时增加，或无线条件仍然不好时重传仍然失败的场景。本发明实施例通过两个逻辑信道传输相同的数据，提高无线链路可靠性，以及减少数据传输的时延。
参见图1，本发明实施例提供了一种数据传输的系统架构，该系统架构中包括UE101、第一基站102和第二基站103；UE101同时接入第一基站102和第二基站103；第一基站102可以为主基站，第二基站103为从基站；当然，第二基站103可以为主基站，第一基站102为从基站；在本发明实施例中，对第一基站102和第二基站103的角色不作具体限定。在本发明实施例中，以第一基站102为主基站，第二基站103为从基站为例进行说明。
UE101与第一基站102之间传输数据时，为了降低传输时延，UE101与第一基站102和UE101与第二基站103之间采用分集传输方式进行数据传输。为了提高传输效率，UE101与第一基站102和UE101与第二基站103之间还可以采用分流传输方式进行数据传输。
分集传输方式是指通过UE101与第一基站102之间的第一逻辑信道以及UE101与第二基站103之间的第二逻辑信道传输相同的数据；分流传输方式是指通过第一逻辑信道和第二逻辑信道传输不同的数据。传输的数据可以为无线资源控制(radio resource control，RRC)信令或者用户数据。
第一逻辑信道和第二逻辑信道均关联UE101的同一个无线承载，也即第一逻辑信道和第二逻辑信道均属于UE101的同一个无线承载；无线承载为UE与基站之间传输数据的无线逻辑资源。第一逻辑信道和第二逻辑信道分别建立在UE与第一基站提供的第一小区(或第一小区组)之间、以及UE与第二基站提供的第二小区(或第二小区组)之间。其中第一逻辑信道和第二逻辑信道均连接同一个分组数据汇聚协议层(PDCP，packet data convergence layer)。当传输的数据为RRC信令时，第一逻辑信道的类型和第二逻辑信道的类型均为信令无线承载(signaling radio bearer，SRB)；当传输的数据为用户数据时，第一逻辑信道的类型和第二逻辑信道的类型均为数据无线承载(data radio bearer，DRB)。
在传输数据之前，建立UE101与第一基站102之间的第一逻辑信道，以及UE101与第二基站103之间的第二逻辑信道；在建立第一逻辑信道和第二逻辑信道时，将DRB类型配置为分集类型(diversity bearer)或分流类型(split bearer)；或者将现有的分流无线承载配置为分集模式(diversity mode)或分流模式(split mode)。将SRB配置为分集类型(diversity bearer)或分流类型(split bearer)，或者，将SRB配置为分集模式(diversity mode)或分流模式(split mode)。因此，分集传输模式包括分集类型(diversity bearer)或分集模式(diversity mode)；分流传输方式包括分流类型(split bearer)或分流模式(split mode)。
本发明实施例提供的数据传输的方法可以应用在传统一体化基站中，也可以应用在无线接入网集中式处理单元(central unit，CU)与分布式处理单元(distributed unit，DU)分离架构的基站中。因此，第一基站102可以为传统一体化基站，也可以为无线接入网CU-DU分离架构的基站；第二基站103可以为传统一体化基站，也可以为无线接入网CU-DU分离架构的基站。传统一体化基站是指无线接口(radio interface)或空口(air interface)的各协议层位于同一个无线接入网节点中的基站。无线接入网CU-DU分离架构的基站是指无线接口的各协议层可以位于不同的无线接入网节点中的基站，不同的无线接入网节点可以为CU和DU。
第一基站102包括第一RRC1021、第一PDCP1022、第一无线链路控制协议1023(Radio link control，RLC)、第一媒体接入控制协议1024(Medium access control，MAC)和第一物理层1025(Physical layer，PHY)；第一基站102中的部分单元位于第一CU中，第一基站102中的剩余单元位于第一DU中，第一基站102可以包括一个或多个第一DU。第一CU和第一DU之间通过有线链路(如光纤)或无线链路进行连接。位于第一CU的单元和位于第一DU中的单元可以根据第一DU与UE101之间的无线条件、不同的UE101或UE101的不同无线承载等灵活部署。第一DU指示第一CU采用分集传输方式与UE101之间进行数据传输。
例如，第一RRC1021位于第一CU中，第一PDCP1022、第一RLC1023、第一MAC1024和第一PHY1025位于第一DU中。或者，参见图2，第一RRC1021和第一PDCP1022位于第一CU中，第一RLC1023、第一MAC1024和第一PHY1025位于第一DU中；或者，第一RRC1021、第一PDCP1022和第一RLC1023位于第一CU中，第一MAC1024和第一PHY1025位于第一DU中；或者，第一RRC1021、第一PDCP1022、第一RLC1023和第一MAC1024位于第一CU中，第一PHY1025位于第一DU中。针对第一基站102，第一CU与多个第一DU之间的协议分离方式可以不同。
同样，第二基站103包括第二RRC1031、第二PDCP1032、第二RLC1033、第二MAC1034 和第二PHY1035；第二基站103中的部分单元位于第二CU中，第二基站103中的剩余单元位于第二DU中，第二基站103可以包括一个或多个第二DU。第二CU和第二DU之间通过有线链路或无线链路进行连接。位于第二CU的单元和位于第二DU的单元可以根据第二DU与UE101之间的无线条件、不同的UE101或UE101的不同无线承载等灵活部署。第二DU指示第二CU采用分集传输方式与UE101之间进行数据传输。
例如，第二RRC1031位于第二CU中，第二PDCP1032、第二RLC1033、第二MAC1034和第二PHY1035位于第二DU中；或者，第二RRC1031和第二PDCP1032位于第二CU中，第二RLC1033、第二MAC1034和第二PHY1035位于第二DU中；或者，第二RRC1031、第二PDCP1032和第二RLC1033位于第二CU中，第二MAC1034和第二PHY1035位于第二DU中；或者，第二RRC1031、第二PDCP1032、第二RLC1033和第二MAC1034位于第二CU中，第二PHY1035位于第二DU中。针对第二基站103，第二CU与多个第二DU之间的协议分离方式可以不同。
第一RRC1021(或第二RRC1031)用于进行数据广播、寻呼、RRC连接管理、安全管理、承载管理、移动管理。第一PDCP1022(或第二PDCP1032)用于进行头压缩和安全。例如，第一PDCP1022(或第二PDCP1032)用于对传输的数据进行加密、解密、完整性保护或验证等。第一RLC1023(或第二RLC1033)用于对ARQ信息进行分段、级联或重排序等。第一MAC1024(或第二MAC1034)用于进行数据调度和优先级处理等。第一PHY1025(或第二PHY1035)用于对波形和多址、调制、编码、解码、数据信息到无线资源的映射等。
第一基站102和第二基站103可以为长期演进(Long Term Evolution，LTE)系统或未来通信系统的基站；第一基站102和第二基站103可以提供低频小区、高频小区或非授权频谱(unlicensed spectrum)小区等。例如，第一基站102和第二基站103可以为第五代移动通信技术(fifth-generation，5G)基站。UE101可以为LTE终端或下一代终端；例如，UE101可以为5G终端。
参见图3，其示出了本发明示例性实施例提供的一种UE101，该UE101包括：第一收发器1011、第一处理器1012、第一存储器1013和第一总线1014。其中，第一收发器1011、第一处理器1012、第一存储器1013通过第一总线1014相互通信；第一收发器1011用于UE101和第一基站102之间的通信，第一存储器1013用于存储指令，该指令包括计算机操作指令，第一处理器1012执行第一存储器1013中存储的指令，使得UE101执行下述数据传输的方法。
参见图4，其示出了本发明示例性实施例提供的一种第一基站102，该第一基站102包括：第二收发器1026、第二处理器1027、第二存储器1028和第二总线1029。其中，第二收发器1026、第二处理器1027、第二存储器1028通过第二总线1029相互通信；第二收发器1026用于第一基站102和UE101之间的通信，第二存储器1028用于存储指令，该指令包括计算机操作指令，第二处理器1027执行第二存储器1028中存储的指令，使得第一基站102执行下述数据传输的方法。
本发明实施例提供了一种数据传输的方法，该方法应用在UE、第一基站和第二基站之间。当第一基站和第二基站均为无线接入网CU与DU分离架构的基站，且第一基站和第二基站均包括两个DU时，本发明应用在UE、第一基站的第一CU与两个第一DU、第二基站的第二CU和两个第二DU之间。本发明实施例以两个基站或一个基站的CU与两个DU之间为例进行说明，并不对本发明做具体限定；可以理解，本发明实施例同样适用于更多基站或一个基站的CU与更多DU之间进行分集传输或分流传输。参见图5，该方法包括：
步骤301：UE确定与第一基站和第二基站之间是否传输相同数据；如果UE与第一基站和第二基站之间传输相同数据，执行步骤302，如果UE与第一基站和第二基站之间传输不同数据，执行步骤304。
UE确定与第一基站和第二基站之间是否传输相同的数据的步骤可以通过以下第一种方式至第三种方式实现。对于第一种实现方式，UE根据当前信道的无线条件，确定UE与第一基站和第二基站之间是否传输相同的数据。对于第二种实现方式，由第一基站根据当前信道的无线条件，确定UE与第一基站和第二基站之间是否传输相同的数据，并通过配置信息将确定的结果通知给UE。对于第三种实现方式，由第二基站根据当前信道的无线条件，确定UE与第一基站和第二基站之间是否传输相同的数据，并通过配置信息将确定的结果通知给UE。其中，当第一逻辑信道和第二逻辑信道均为SRB，且确定的结果为UE与第一基站和第二基站之间传输相同的数据时，配置信息包括分集模式或者分流类型，该分集模式或者分流类型用于指示UE与第一基站和第二基站之间传输相同的数据。当第一逻辑信道和第二逻辑信道均为DRB，且确定的结果为UE与第一基站和第二基站之间传输相同的数据时，配置信息包括分集类型或者分流类型，该分集类型或者分流类型用于指示UE与第一基站和第二基站之间传输相同的数据。
对于第一种实现方式，本步骤可以为：
UE获取当前信道的第一无线条件，当第一无线条件满足第一预设条件时，UE与第一基站和第二基站之间传输相同的数据；当第一无线条件满足第三预设条件时，UE与第一基站和第二基站之间传输不同的数据。
第一无线条件可以为以下条件中的至少一个：
UE与第一基站之间的参考信号接收功率(reference signal received power，RSRP)，UE与第一基站之间的参考信号接收质量(reference signal received quality，RSRQ)、UE与第一基站之间的无线信道的信道质量指示(channel quality indicator，CQI)、UE的信号与干扰加噪声比(signal interference noise rate，SINR)、UE的信噪比(signal noise rate，SNR)、混合自动重传请求非确认信息(hybrid automatic retransmission request non acknowledgement，HARQ NACK)的统计数量、自动重传请求非确认信息(automatic retransmission request non acknowledgement，ARQ NACK)的统计数量。
其中，当第一无线条件为HARQ NACK的统计数量时，为了提高确定的准确性，UE可以统计离当前时间最近的第一预设时长内，UE向第一基站(或第二基站)发送的HARQ NACK的统计数量；或者，UE统计离当前时间最近的第一预设时长内，接收第一基站(或第二基站)发送的HARQ NACK的统计数量。
同样，当第一无线条件为ARQ NACK的统计数量时，为了提高确定的准确性，UE可以统计离当前时间最近的第一预设时长内，UE向第一基站(或第二基站)发送的ARQ NACK 的统计数量；或者，UE统计离当前时间最近的第一预设时长内，接收第一基站(或第二基站)发送的ARQ NACK的统计数量。
第一预设时长可以根据需要进行设置并更改，在本发明实施例中，对第一预设时长不作具体限定。例如，第一预设时长可以为5小时或者8小时等。
相应的，第一预设条件可以为以下条件中的至少一个条件：
RSRP不大于第一预设功率、RSRQ不大于第一预设数值、CQI不大于第二预设数值、SINR不大于第三预设数值、SNR不大于第四预设数值、HARQ NACK的统计数量大于第五预设数值、ARQ NACK的统计数量大于第六预设数值。
第三预设条件可以为以下条件中的至少一个条件：
RSRP大于第一预设功率，且小于第三预设功率、RSRQ大于第一预设数值且小于第十三预设数值、CQI大于第二预设数值且小于第十四预设数值、SINR大于第三预设数值，且小于第十五预设数值、SNR大于第四预设数值，且小于第十六预设数值、HARQ NACK的统计数量大于第十七预设数值，且不大于第五预设数值、ARQ NACK的统计数量大于第十八预设数值，且不大于第六预设数值。
第三预设功率大于第一预设功率，第十三预设数值大于第一预设数值，第十四预设数值大于第二预设数值，第十五预设数值大于第三预设数值，第十六预设数值大于第四预设数值，第十七预设数值小于第五预设数值，第十八预设数值小于第六预设数值。并且，第一预设功率、第三预设功率、第一预设数值、第二预设数值、第三预设数值、第四预设数值、第五预设数值和第六预设数值、第十三预设数值、第十四预设数值、第十五预设数值、第十六预设数值、第十七预设数值和第十八预设数值都可以根据需要进行设置并更改，在本发明实施例中，对第一预设功率、第一预设数值、第二预设数值、第三预设数值、第四预设数值、第五预设数值和第六预设数值都不作具体限定。
对于第二种实现方式，本步骤可以为：
第一基站获取当前信道的第二无线条件，当第二无线条件满足第二预设条件时，第一基站确定与UE和第二基站之间传输相同数据，向UE发送包括UE与第一基站和第二基站之间传输相同数据的信息的配置信息(为了便于区分，将该配置信息称为第一配置信息)，以触发UE与第一基站和第二基站之间传输相同的数据。UE接收第一基站发送的第一配置信息，确定第一配置信息包括UE与第一基站和第二基站之间传输相同数据的信息时，UE与第一基站和第二基站之间传输相同数据。
当第二无线条件满足第四预设条件时，第一基站确定与UE和第二基站之间传输不同数据，向UE发送包含UE与第一基站和第二基站之间传输不同数据的信息的第二配置信息。UE接收第一基站发送的第二配置信息，确定第二配置信息包括UE与第一基站和第二基站之间传输不同数据的信息时，UE与第一基站和第二基站之间传输不同数据。
需要说明的是，第一基站可以直接向UE发送第一配置信息，也可以向第二基站发送第一配置信息，由第二基站将第一配置信息转发给UE。同样，第一基站可以直接向UE发送第二配置信息，也可以向第二基站发送第二配置信息，由第二基站将第二配置信息转发给UE。
第二无线条件可以为以下条件中的至少一个：
UE与第一基站之间的RSRP，UE与第一基站之间的RSRQ、UE与第一基站之间的无 线信道的CQI、UE的SINR、UE的SNR、HARQ NACK的统计数量、ARQ NACK的统计数量。
当第二无线条件为RSRP和/或CQI时，UE周期性或者当达到上报条件时，UE向第一基站发送测量报告，该测量报告包括RSRP和/或CQI。第一基站接收UE上报的该测量报告，从该测量报告中获取RSRP和/或CQI。
需要说明的是，UE向第一基站发送该测量报告时，可以向第一基站包括的第一MAC发送该测量报告；相应的，第一MAC接收UE发送的该测量报告。因此，第一MAC根据该测量报告，确定UE与第一基站和第二基站之间是否传输相同数据。
进一步地，第一MAC接收到该测量报告后，也可以将该测量报告上报给第一RRC，由第一RRC根据该测量报告，确定UE与第一基站和第二基站之间是否传输相同数据，参见图6。
当无线条件为HARQ NACK的统计数量和/或ARQ NACK的统计数量时，UE在接收第一基站传输的数据失败时，向第一基站发送RLC状态报告，该RLC状态报告中包括HARQ NACK的统计数量和/或ARQ NACK的统计数量。第一基站接收UE发送的该RLC状态报告，从该RLC状态报告中获取该HARQ NACK的统计数量和/或ARQ NACK的统计数量。
需要说明的是，UE向第一基站发送该RLC状态报告时，可以向第一基站包括的第一RLC发送该RLC状态报告；相应的，第一RLC接收UE发送的该RLC状态报告。因此，第一RLC根据该RLC状态报告，确定UE与第一基站和第二基站之间是否传输相同数据。
同样，当第二无线条件为HARQ NACK的统计数量时，为了提高确定的准确性，第一基站可以统计离当前时间最近的第二预设时长内，第一基站向UE(或第二基站)发送的HARQ NACK的统计数量；或者，第一基站统计离当前时间最近的第二预设时长内，接收UE(或第二基站)发送的HARQ NACK的统计数量。
同样，当第二无线条件为ARQ NACK的统计数量时，为了提高确定的准确性，第一基站可以统计离当前时间最近的第二预设时长内，第一基站向UE(或第二基站)发送的ARQ NACK的统计数量；或者，第一基站统计离当前时间最近的第二预设时长内，接收UE(或第二基站)发送的ARQ NACK的统计数量。
第二预设时长可以根据需要进行设置并更改，在本发明实施例中，对第二预设时长不作具体限定；例如，第二预设时长可以为5小时或者8小时等。
第二预设条件可以为以下条件中的至少一个条件：
RSRP不大于第二预设功率、RSRQ不大于第七预设数值、CQI不大于第八预设数值、SINR不大于第九预设数值、SNR不大于第十预设数值、HARQ NACK的统计数量大于第十一预设数值、ARQ NACK的统计数量大于第十二预设数值。
第四预设条件可以为以下条件中的至少一个条件：
RSRP大于第二预设功率，且小于第四预设功率、RSRQ大于第七预设数值，且小于第十九预设数值、CQI大于第八预设数值，且小于第二十预设数值、SINR大于第九预设数值，且小于第二十一预设数值、SNR大于第十预设数值，且小于第二十二预设数值、HARQ NACK的统计数量大于第二十三预设数值，且不大于第十一预设数值、ARQ NACK的统计数量大于第二十四预设数值，且不大于第十二预设数值。
第四预设功率大于第二预设功率，第十九预设数值大于第七预设数值，第二十预设数 值大于第八预设数值，第二十预设数值大于第九预设数值，第二十一预设数值大于第十预设数值，第二十二预设数值大于第十预设数值，第二十三预设数值小于第十一预设数值，第二十四预设数值小于第十二预设数值。
对于第三种实现方式，本步骤可以为：
第二基站获取当前信道的第三无线条件，当第三无线条件满足第五预设条件时，第二基站确定与UE和第一基站之间传输相同数据，向UE发送包括UE与第一基站和第二基站之间传输相同数据的信息的第三配置信息以触发UE与第一基站和第二基站之间传输相同的数据。UE接收第二基站发送的第三配置信息，确定第三配置信息包括UE与第一基站和第二基站之间传输相同数据的信息时，UE与第一基站和第二基站之间传输相同数据。
当第二无线条件满足第六预设条件时，第二基站确定与UE和第一基站之间传输不同数据，向UE发送包含UE与第一基站和第二基站之间传输不同数据的信息的第四配置信息。UE接收第二基站发送的第四配置信息，确定第四配置信息包括UE与第一基站和第二基站之间传输不同数据的信息时，UE与第一基站和第二基站之间传输不同数据。
需要说明的是，第二基站可以直接向UE发送第三配置信息或第四配置信息，也可以向第一基站发送第三配置信息或第四配置信息，由第一基站将第三配置信息或第四配置信息转发给UE。
需要说明的是，UE确定与第一基站和第二基站之间传输相同数据或不同数据时，UE包括的第三MAC或第三RLC指示UE包括的第三RRC或第三PDCP与第一基站和第二基站之间传输相同数据或不同数据。
需要说明的是，在UE向第一基站传输数据之前，UE确定与第一基站和第二基站之间是否传输相同数据；在UE接收第一基站传输的数据之前，UE还需要确定与第一基站和第二基站之间是否传输相同数据。
步骤302：UE与第一基站和第二基站之间传输相同数据时，UE通过第一逻辑信道，与第一基站传输UE的待传输数据(为了便于区分，将该处的待传输数据称为第一待传输数据)。
UE确定在上行传输，与第一基站和第二基站之间传输相同数据时，UE通过第一逻辑信道，向第一基站传输UE的第一待传输数据，第一基站通过第一逻辑信道接收UE传输的UE的第一待传输数据。UE在下行传输时与第一基站和第二基站之间可以传输相同或不同数据。
UE确定在下行传输，与第一基站和第二基站之间传输相同数据时，第一基站通过第一逻辑信道，向UE传输UE的第一待传输数据，UE通过第一逻辑信道接收第一基站传输的UE的第一待传输数据。UE在上行传输时与第一基站和第二基站之间可以传输相同或不同数据。
其中，第一待传输数据可以为用户数据、RRC信令RRC消息、PDCP PDL消息、MAC PDU消息或物理层编码调制后的数据。
需要说明的是，在本步骤之前，UE建立与第一基站之间的第一逻辑信道，以及建立与第二基站之间的第二逻辑信道。
UE通过建立在第一基站包括的第一DU上的第一逻辑信道，与第一基站进行数据传输。
步骤303：UE通过第二逻辑信道，与第二基站传输第一待传输数据，结束。
UE确定在上行传输，与第一基站和第二基站之间传输相同数据时，UE通过第二逻辑 信道向第二基站传输第一待传输数据，第二基站通过第二逻辑信道接收UE传输的第一待传输数据，通过第二基站与第一基站之间的接口，向第一基站传输第一待传输数据。UE在下行传输时与第一基站和第二基站之间可以传输相同或不同数据。
UE确定在下行传输，与第一基站和第二基站之间传输相同数据时，第一基站通过与第二基站之间的接口，向第二基站传输第一待传输数据；第二基站通过第一基站与第二基站间之间的接口，接收第一基站传输的第一待传输数据，并通过第二逻辑信道，向UE传输第一待传输数据；UE通过第二逻辑信道，接收第二基站传输的第一待传输数据。UE在上行传输时与第一基站和第二基站之间可以传输相同或不同数据。
在本步骤之前，第一基站和第二基站之间需要建立接口，例如，该接口可以为X2接口，也可以为基站上的其他接口，也可以为在X2接口的基础上演进出来的接口，在本发明实施例中，对基站间接口不作具体限定。
例如，参见图7，本发明实施例提供了一种第一基站和第二基站之间的用户面协议栈；参见图8，本发明实施例提供了一种第一基站和第二基站之间的控制面协议栈，第一基站中的第一PDCP通过X2接口与第二基站中的第二RLC建立连接，从而通过该接口进行数据传输。
需要说明的是，UE与第二基站之间的第二逻辑信道可以预先建立，也可以在传输数据时，才建立第二逻辑信道。
步骤304：UE与第一基站和第二基站之间传输不同数据时，UE通过第一逻辑信道，与第一基站传输UE的第二待传输数据。
在上行传输时，UE通过第一逻辑信道，向第一基站传输UE的第二待传输数据；第一基站通过第一逻辑信道接收UE传输的UE的第二待传输数据。在下行传输时，第一基站通过第一逻辑信道，向UE传输UE的第二待传输数据，UE通过第一逻辑信道接收第一基站传输的UE的第二待传输数据。其中，第二待传输数据可以为用户数据、RRC信令RRC消息、PDCP PDL消息、MAC PDU消息或物理层编码调制后的数据。
需要说明的是，UE与第一基站传输数据(第一待传输数据或者第二待传输数据)时，通过第一逻辑信道以及UE与第一基站之间的无线接口进行数据传输。
步骤305：UE通过第二逻辑信道，与第二基站传输UE的第三待传输数据。
在上行传输时，UE通过第二逻辑信道，向第二基站传输UE的第三待传输数据；第二基站通过第二逻辑信道，接收UE传输的UE的第三待传输数据，通过第一基站与第二基站间之间的接口，向第一基站传输第三待传输数据，第三待传输数据可以为用户数据、RRC信令RRC消息、PDCP PDL消息、MAC PDU消息或物理层编码调制后的数据。
在下行传输时，第一基站通过第一基站与第二基站之间的接口，向第二基站传输第三待传输数据；第二基站通过第一基站与第二基站之间的接口，接收第一基站传输的第三待传输数据，通过第二逻辑信道，向UE传输UE的第三待传输数据；UE通过第二逻辑信道，接收第二基站传输的UE的第三待传输数据，第三待传输数据可以为用户数据、RRC信令RRC消息、PDCP PDL消息、MAC PDU消息或物理层编码调制后的数据。
需要说明的是，第一基站与第二基站传输数据(第一待传输数据或第三待传输数据)时，第一基站包括的第一PDCP向第二基站包括的第二RLC发送该数据；或者，第二基站包括的第二RLC向第一基站包括的第一PDCP发送该数据。并且，UE与第二基站传输数 据(第一待传输数据或者第三待传输数据)时，通过第二逻辑信道以及UE与第二基站之间的无线接口进行数据传输。
在本发明实施例中，UE与第一基站和第二基站之间传输相同数据时，UE通过与第一基站之间的第一逻辑信道，与第一基站传输UE的第一待传输数据，通过与第二基站之间的第二逻辑信道，与第二基站传输第一待传输数据，以使第二基站将第一待传输数据转发给第一基站；由于通过第一逻辑信道和第二逻辑信道与UE传输相同的数据，从而提高了无线链路可靠性，并且减少了数据传输的时延。
本发明实施例提供了一种数据传输的方法，该方法应用在UE、第一基站和第二基站之间，参见图9，该方法包括：
步骤401：第一基站确定与UE和第二基站之间是否传输相同数据；如果第一基站与UE和第二基站之间传输相同数据，执行步骤402；第一基站与UE和第二基站之间传输不同数据，执行步骤404。
本步骤和步骤301的第二种实现方式相同，在此不再赘述。
进一步地，第一基站确定与UE和第二基站之间传输相同数据之后，向UE发送第一配置信息，第一配置信息用于触发UE与第一基站和第二基站之间传输相同数据。其中，需要说明的是，在本步骤中，由第一基站包括的第一MAC向UE发送第一配置信息。
步骤402：第一基站与UE和第二基站之间传输相同数据时，第一基站通过与UE之间的第一逻辑信道，与UE传输UE的第一待传输数据。
步骤403：第一基站通过第一基站与第二基站之间的接口，与第二基站传输第一待传输数据，以使第二基站通过第二逻辑信号，与UE传输第一待传输数据，结束。
本发明实施例可以应用在切换场景下，当第一基站切换到第二基站时，本步骤可以通过以下步骤4031和4032实现，包括：
4031：第一基站向第二基站发送切换请求消息，该切换请求消息指示第二基站为UE配置第二逻辑信道。
第二基站接收第一基站发送的切换请求消息，根据该切换请求消息建立与UE之间的第二逻辑信道，向第一基站发送切换响应消息，该切换响应消息指示第二基站已经为UE配置第二逻辑信道。
4032：第一基站接收第二基站发送的切换响应消息，根据该切换响应消息，通过第一基站与第二基站之间的接口，与第二基站传输第一待传输数据。
步骤404：第一基站与UE和第二基站之间传输不同数据时，第一基站通过第一逻辑信道，与UE传输UE的第二待传输数据。
步骤405：第一基站通过第一基站与第二基站之间的接口，与第二基站传输UE的第三待传输数据，以使第二基站与UE传输第三待传输数据。
需要说明的是，在上行传输时，第一基站可以与UE和第二基站之间传输相同数据，也即按照以上步骤402-403进行数据传输；在下行传输时，第一基站可以与UE和第二基站之间传输相同或不同数据，也即可以按照以上步骤402-403或者404-405进行数据传输。
在下行传输时，第一基站可以与UE和第二基站之间传输相同数据，在上行传输时，也即按照以上步骤402-403进行数据传输；第一基站可以与UE和第二基站之间传输相同或不 同数据，也即可以按照以上步骤402-403或者404-405进行数据传输。
本发明实施例中，可以有多个第二基站；多个第二基站中的每个第二基站执行的操作都可以相同。
在本发明实施例中，第一基站与UE和第二基站之间传输相同数据时，通过第一逻辑信道与UE传输第一待传输数据，通过与第二基站之间的接口，与第二基站传输第一待传输数据，以使第二基站通过与UE之间的第二逻辑信道，与UE传输第一待传输数据；由于通过第一逻辑信道和第二逻辑信道与UE传输相同数据，从而提高了无线链路可靠性，并且减少了数据传输的时延。
下述为本发明装置实施例，可以用于执行本发明方法实施例。对于本发明装置实施例中未披露的细节，请参照本发明方法实施例。
图10是本发明实施例提供的一种数据传输的装置的结构方框图，该装置可以通过软件、硬件或者两者的结合实现成为用户设备的部分或者全部。
该装置包括：第一传输单元501和第二传输单元502。
第一传输单元501用于执行上述实施例中的步骤302及其可选方案。
第二传输单元502用于执行上述实施例中的步骤303及其可选方案。
参见图11，在一个可能的设计中，该装置还包括：接收单元503和第一确定单元504。
接收单元503用于执行上述实施例中的步骤301中接收第一基站发送的配置信息及其可选方案。
第一确定单元504用于执行上述实施例中的步骤301中根据配置信息，确定与第一基站和第二基站之间是否传输相同数据及其可选方案。
参见图12，在一个可能的设计中，该装置还包括：第二确定单元505。
第二确定单元505用于执行上述实施例中的步骤301中根据当前信道的第一无线条件，确定与第一基站和第二基站之间是否传输相同数据及其可选方案。
图13是本发明实施例提供的一种数据传输的装置的结构方框图，该装置可以通过软件、硬件或者两者的结合实现成为第一基站的部分或者全部。
该装置包括：第三传输单元601和第四传输单元602。
第三传输单元601用于执行上述实施例中的步骤402及其可选方案。
第四传输单元602用于执行上述实施例中的步骤403及其可选方案。
参见图14，该装置还包括：第三确定单元603。
第三确定单元603用于执行上述实施例中的步骤401及其可选方案。
参见图15，该装置还包括：发送单元604。
发送单元604用于执行上述实施例中的步骤401中向UE发送配置信息及其可选方案。
需要说明的是：上述实施例提供的数据传输的装置在数据传输时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的数据传输的装置与数据传输的方法实施例属于同一构思，其具体 实现过程详见方法实施例，这里不再赘述。
图16是本发明实施例提供的一种系统芯片的结构方框图，应用于UE中，为了便于与应用在基站中的芯片进行区分，将该芯片称为第一芯片，第一芯片包括：第一输入输出接口701、至少一个第三处理器702、第三存储器703和第三总线704；第三输入输出接口701通过第三总线704与至少一个第三处理器702和第三存储器703相连，第三输入输出接口701用于UE与基站之间的通信，至少一个第三处理器702执行第三存储器703中存储的指令，使得UE执行上述传输数据的方法。
图17是本发明实施例提供的一种系统芯片的结构方框图，应用于基站(第一基站)中，为了便于与应用在UE中的芯片进行区分，将该芯片称为第二芯片，第二芯片包括：第二输入输出接口801、至少一个第四处理器802、第四存储器803和第四总线804；第四输入输出接口801通过第四总线804与至少一个第四处理器802和第四存储器803相连，第四输入输出接口801用于基站与UE之间的通信，至少一个第四处理器802执行第四存储器803中存储的指令，使得基站执行上述传输数据的方法。
本发明中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (21)

  1. 一种数据传输的方法，其特征在于，所述方法包括：
    用户设备UE与所述UE接入的第一基站和所述UE接入的第二基站之间传输相同数据时，所述UE通过与所述第一基站之间的第一逻辑信道，与所述第一基站传输所述UE的待传输数据；
    所述UE通过与所述第二基站之间的第二逻辑信道，与所述第二基站传输所述待传输数据，所述第一逻辑信道与所述第二逻辑信道关联所述UE的同一个无线承载。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述UE接收所述第一基站发送的配置信息，所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输数据的方式的信息；
    当所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输相同数据的信息时，所述UE与所述第一基站和所述第二基站之间传输相同数据。
  3. 根据权利要求2所述的方法，其特征在于，
    当所述第一逻辑信道和所述第二逻辑信道均为信令无线承载SRB时，所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输相同数据的信息是分集模式或者分流类型。
  4. 根据权利要求2所述的方法，其特征在于，
    当所述第一逻辑信道和所述第二逻辑信道均为数据无线承载DRB时，所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输相同数据的信息是分集类型或者分流类型。
  5. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述UE获取当前信道的第一无线条件，当所述第一无线条件满足第一预设条件时，所述UE与所述第一基站和所述第二基站之间传输相同数据。
  6. 根据权利要求5所述的方法，其特征在于，所述第一预设条件包括以下条件中的至少一个条件：
    所述UE与所述第一基站之间的参考信号接收功率RSRP不大于第一预设功率、所述UE与所述第一基站之间的参考信号接收质量RSRQ不大于第一预设数值、所述UE与所述第一基站之间的无线信道的信道质量指示CQI不大于第二预设数值、所述UE的信号与干扰加噪声比SINR不大于第三预设数值、所述UE的信噪比SNR不大于第四预设数值、混合自动重传请求HARQ非确认信息NACK的统计数量大于第五预设数值、自动重传请求ARQ非确认信息NACK的统计数量大于第六预设数值。
  7. 根据权利要求1所述的方法，其特征在于，所述UE与所述UE接入的第一基站和所述UE接入的第二基站之间传输相同数据时，所述UE通过与所述第一基站之间的第一逻辑信道，与所述第一基站传输所述UE的数据，包括：
    所述UE向所述第一基站传输数据，且所述UE与所述第一基站和所述第二基站之间传输相同数据时，所述UE通过所述第一逻辑信道，与所述第一基站传输所述UE的待传输数据；或者，
    所述UE接收所述第一基站传输的数据，且所述UE与所述第一基站和所述第二基站之间传输相同数据时，所述UE通过所述第一逻辑信道，与所述第一基站传输所述UE的待传输数据。
  8. 根据权利要求1-7任一所述的方法，其特征在于，所述第一基站和/或所述第二基站为无线接入网集中式处理单元CU与分布式处理单元DU分离架构的基站。
  9. 一种数据传输的方法，其特征在于，所述方法包括：
    第一基站与用户设备UE和所述UE接入的第二基站之间传输相同数据时，所述第一基站通过与所述UE之间的第一逻辑信道，与所述UE传输所述UE的待传输数据；
    所述第一基站通过与所述第二基站之间的接口，与所述第二基站传输所述待传输数据，以使所述第二基站通过与所述UE之间的第二逻辑信道，与所述UE传输所述待传输数据，所述第一逻辑信道与所述第二逻辑信道关联所述UE的同一个无线承载。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    所述第一基站获取当前信道的第二无线条件，当所述第二无线条件满足第二预设条件时，所述第一基站与所述UE和所述第二基站之间传输相同数据。
  11. 根据权利要求10所述的方法，其特征在于，所述第二预设条件包括以下条件中的至少一个条件：
    所述UE与所述第一基站之间的参考信号接收功率RSRP不大于第二预设功率、所述UE与所述第一基站之间的参考信号接收质量RSRQ不大于第七预设数值、所述UE与所述第一基站之间的无线信道的信道质量指示CQI不大于第八预设数值、所述UE的信号与干扰加噪声比SINR不大于第九预设数值、所述UE的信噪比SNR不大于第十预设数值、混合自动重传请求HARQ非确认信息NACK的统计数量大于第十一预设数值、自动重传请求ARQ非确认信息NACK的统计数量大于第十二预设数值。
  12. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    所述第一基站向所述UE发送配置信息，所述配置信息包括所述UE与所述第一基站和所述第二基站之间传输数据的方式的信息。
  13. 根据权利要求12所述的方法，其特征在于，
    当所述第一逻辑信道和所述第二逻辑信道均为信令无线承载SRB时，所述配置信息包括分集模式或者分流类型。
  14. 根据权利要求12所述的方法，其特征在于，
    当所述第一逻辑信道和所述第二逻辑信道均为数据无线承载DRB时，所述配置信息包括分集类型或者分流类型。
  15. 根据权利要求10所述的方法，其特征在于，所述第一基站通过与所述UE接入的第二基站之间的接口，与所述第二基站传输所述待传输数据，包括：
    所述第一基站向所述第二基站发送切换请求消息，所述切换请求消息指示所述第二基站为所述UE配置所述第二逻辑信道；
    所述第一基站接收所述第二基站发送的切换响应消息，根据所述切换响应消息，通过与所述UE接入的第二基站之间的接口，与所述第二基站传输所述待传输数据。
  16. 根据权利要求10所述的方法，其特征在于，所述第一基站与用户设备UE和所述UE接入的第二基站之间传输相同数据时，所述第一基站通过与所述UE之间的第一逻辑信道，与所述UE传输所述UE的数据，包括：
    所述第一基站向所述UE传输数据，且所述第一基站与所述UE和所述第二基站之间传输相同数据时，所述第一基站通过所述第一逻辑信道，与所述UE传输所述UE的待传输数据；或者，
    所述第一基站接收所述UE传输的数据，且所述第一基站与所述UE和所述第二基站之间传输相同数据时，所述第一基站通过所述第一逻辑信道，与所述UE传输所述UE的待传输数据。
  17. 根据权利要求9-16任一所述的方法，其特征在于，所述第一基站为无线接入网集中式处理单元CU与分布式处理单元DU分离架构的基站。
  18. 一种用户设备UE，其特征在于，所述UE包括：收发器、处理器、总线和存储器，所述收发器、所述处理器、所述存储器通过所述总线相互通信，所述收发器用于所述UE和基站之间的通信，所述处理器执行所述存储器中存储的指令，使得所述UE执行如权利要求1-8任一权利要求所述的数据传输的方法。
  19. 一种基站，其特征在于，所述基站包括：收发器、处理器、总线和存储器，所述收发器、所述处理器、所述存储器通过所述总线相互通信，所述收发器用于所述基站和用户设备UE之间的通信，所述处理器执行所述存储器中存储的指令，使得所述基站执行如权利要求9-17任一权利要求所述的数据传输的方法。
  20. 一种计算机存储介质，其特征在于，所述存储介质上存储计算机程序，所述计算机程序被处理器执行时实现以下步骤：
    用户设备UE与所述UE接入的第一基站和所述UE接入的第二基站之间传输相同数据时，通过与所述第一基站之间的第一逻辑信道，与所述第一基站传输所述UE的待传输数据；
    通过与所述第二基站之间的第二逻辑信道，与所述第二基站传输所述待传输数据，所述第一逻辑信道与所述第二逻辑信道关联所述UE的同一个无线承载。
  21. 一种计算机存储介质，其特征在于，所述存储介质上存储计算机程序，所述计算机程序被处理器执行时实现以下步骤：
    第一基站与用户设备UE和所述UE接入的第二基站之间传输相同数据时，通过与所述UE之间的第一逻辑信道，与所述UE传输所述UE的待传输数据；
    通过与所述第二基站之间的接口，与所述第二基站传输所述待传输数据，以使所述第二基站通过与所述UE之间的第二逻辑信道，与所述UE传输所述待传输数据，所述第一逻辑信道与所述第二逻辑信道关联所述UE的同一个无线承载。
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