WO2018227752A1 - Procédé de transmission de données et dispositif associé - Google Patents

Procédé de transmission de données et dispositif associé Download PDF

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Publication number
WO2018227752A1
WO2018227752A1 PCT/CN2017/098147 CN2017098147W WO2018227752A1 WO 2018227752 A1 WO2018227752 A1 WO 2018227752A1 CN 2017098147 W CN2017098147 W CN 2017098147W WO 2018227752 A1 WO2018227752 A1 WO 2018227752A1
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WO
WIPO (PCT)
Prior art keywords
terminal
physical layer
information
area
transmission mode
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PCT/CN2017/098147
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English (en)
Chinese (zh)
Inventor
孙彦良
Original Assignee
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 CN201780057953.3A priority Critical patent/CN109716667A/zh
Publication of WO2018227752A1 publication Critical patent/WO2018227752A1/fr

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a data transmission method and related devices.
  • the standardization organization 3GPP launched the New RAT (NR) SI project in the first half of 2016, which is aimed at the fifth-generation mobile communication technology (5th-Generation, 5G), including physical layer signal design, high-level network segmentation, and signaling process.
  • 5G fifth-generation mobile communication technology
  • the New RAT (NR) study can eliminate the need to consider backward compatibility with the long-term evolution of the Long Term Evolution (LTE) system. Instead, it can be based on predictions of future technology trends in the technical solution. In the design, add some forward compatibility considerations.
  • the frequency band coverage of NR research is wider, and it is hoped to establish a unified air interface technology framework in sub-6GHz (0-6GHz) and above-6GHz (6-100GHz).
  • sub-6GHz sub-6GHz
  • 6-100GHz 6-100GHz
  • Beamforming technology has been discussed in LTE. If the antenna array is a line array or a planar array, then based on a discrete Fourier transform (DFT) codebook, the transmitting end can generate a beam with good main lobe directionality.
  • DFT discrete Fourier transform
  • the concept of Beam Pair Link is established, and one BPL represents the pairing of one base station side beam and one terminal side beam.
  • the establishment of BPL is based on the beam management process.
  • the beam management process is a series of processes based on the transmission and measurement of reference signals to obtain uplink and downlink beam pairing information.
  • the BPL information is managed on the base station side, and the terminal is notified by signaling.
  • the traditional LTE uplink definition in the process of designing the simultaneous transmission of the control channel and the data channel, does not involve a beam management process for the low frequency band design, and the antenna array gain is low.
  • the present application proposes a data transmission method and related equipment, so that the multi-antenna transmission mode adopted for data transmission is based on beam pairing output by the beam management process, which improves the antenna array gain and the paired beam transmission determined by the beam management process. The reliability of data transmission.
  • a data transmission method including:
  • the terminal transmits the physical layer control information by using the first multi-antenna transmission mode, and transmits the physical layer control information and the physical layer data information by using the second multi-antenna transmission mode;
  • the first multi-antenna transmission mode and the second multi-antenna transmission mode are the same beam pairing set output based on the same beam management process, and the beam pairing set includes the paired terminal side beam.
  • the embodiment of the present application enables the multi-antenna transmission mode used for data transmission to be based on beam pairing output by the beam management process, improves the array gain of the antenna, and the paired beam transmission determined by the beam management process, thereby improving the reliability of data transmission.
  • the transmission of the physical layer control information and the physical layer data information share the beam pairing output by the same beam management process, thereby avoiding beam pairing of the physical layer control information and the physical layer data information by using one beam management process, thereby reducing data transmission. Delay, and ensure that the reliability of physical layer control information transmission is greater than the physical layer data letter The reliability of the transmission.
  • the terminal transmits the physical layer control information on each orthogonal frequency division multiplexing modulated OFDM symbol in the first region, and uses the paired terminal side beam in the beam pairing set to transmit the physical layer control information;
  • the network device schedules an area of the uplink transmission time-frequency resource block for transmitting the physical layer control information to the terminal.
  • the first area of the embodiment of the present application adopts a diversity technology, and the diversity technology improves the quality of physical layer data information transmission.
  • the terminal generates a physical layer data information by transmitting a beam of the terminal side of the M layer based on the paired terminal side beams in the beam pairing set in the second region, where M is greater than zero and A positive integer that is less than or equal to the number of beams of the paired terminal side; the second area is an area of the uplink transmission time-frequency resource block that the network device schedules to transmit the physical layer data information to the terminal.
  • the second area of the embodiment of the present application adopts a spatial multiplexing technology, and the spatial multiplexing technology improves the number of physical layer control data information transmission.
  • the terminal receives the first modulation and coding indication information, and the acknowledgement information or the non-acknowledgment information of the physical layer data information transmission, where the first modulation and coding indication information includes the first modulation and coding parameter MCS or the first rank indication.
  • the first modulation and coding indication information includes the first modulation and coding parameter MCS or the first rank indication.
  • the terminal adjusts the first modulation and coding indication information according to the acknowledgement information or the non-confirmation information, and obtains the second modulation and coding indication information, where the second modulation and coding indication information includes the second MCS or the second RI;
  • the second RI is the number M of transmission layers.
  • the physical layer control information includes a second MCS of each of the transport layer number M and the transport layer number M.
  • the first area and the second area occupy the same uplink transmission time-frequency resource block that is scheduled to be sent to the terminal, and the uplink transmission time-frequency resource block is continuous in the time domain and the frequency domain.
  • the waveform of the physical layer control information and the physical layer data information sent by the terminal is a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform
  • the first region and the second region have the same time domain, different frequency domains, and the first region and the second region are adjacent in the frequency domain.
  • the waveform of the physical layer control information and the physical layer data information sent by the terminal is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-s-OFDM waveform
  • the first region and the second region have the same frequency domain, different time domains, and the first region and the second region are adjacent in the time domain.
  • the first area and the second area can share a power control process, avoiding the first area and the The second area separately designs the power control flow, which reduces the signaling overhead.
  • Another data transmission method including:
  • the network device sends beam indication information to the terminal, where the beam indication information includes a beam pairing set output by the beam management process, and the beam pairing set includes a paired terminal side beam;
  • the beam management process is based on the first multi-antenna transmission mode and the second multi-antenna transmission mode;
  • the first multi-antenna transmission mode is a multi-antenna transmission mode used by the terminal to transmit physical layer control information
  • the second multi-antenna transmission mode is a multi-antenna transmission mode used by the terminal to transmit physical layer data information.
  • the network device sends configuration information to the terminal, where the configuration information includes that the first area occupies a sub-band width of an uplink transmission time-frequency resource block scheduled to be sent to the terminal, or the first area occupies an uplink transmission scheduled to the terminal.
  • the orthogonal frequency division multiplexing of the time-frequency resource block modulates the number of symbols of the OFDM.
  • the network device sends the first modulation and coding indication information, and the acknowledgement information or the non-acknowledgment information of the physical layer data information transmission to the terminal, where the first modulation and coding indication information includes the first modulation and coding parameter MCS or the first a rank indicating RI;
  • the first modulation coding indication information, the acknowledgement information of the physical layer data information transmission, or the non-confirmation information is used to determine the number of transmission layers of the physical layer data information.
  • a terminal comprising a module or unit for performing the data transmission method of the above first aspect.
  • a network device comprising a module or unit for performing the data transmission method of the second aspect described above.
  • a terminal in a fifth aspect, includes a processor, a communication module, and a memory, and the memory is configured to store instructions.
  • the instructions for the processor to read the memory perform the data transfer method of the first aspect described above.
  • a network device in a sixth aspect, includes a processor, a communication module, and a memory, and the memory is configured to store instructions.
  • the instructions for the processor to read the memory perform the data transfer method of the second aspect described above.
  • a computer storage medium for storing computer software instructions for use in the terminal, comprising a program designed to perform the first aspect described above.
  • a computer storage medium for storing computer software instructions for use in the network device, comprising a program designed to perform the second aspect described above.
  • the embodiment of the present application enables the multi-antenna transmission mode used for data transmission to be based on beam pairing output by the beam management process, improves the array gain of the antenna, and the paired beam transmission determined by the beam management process, thereby improving the reliability of data transmission.
  • the transmission of the physical layer control information and the physical layer data information share the beam pairing output by the same beam management process, thereby avoiding beam pairing of the physical layer control information and the physical layer data information by using one beam management process, thereby reducing data transmission.
  • the delay and the reliability of the physical layer control information transmission are greater than the reliability of the physical layer data information transmission.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present application.
  • 3A is a schematic diagram of a first area and a second area provided by an embodiment of the present application.
  • FIG. 3B is a schematic diagram of still another first region and a second region according to an embodiment of the present application.
  • 3C is a schematic diagram of still another first region and a second region provided by the embodiment of the present application.
  • FIG. 4A is a schematic diagram of still another first region and a second region provided by an embodiment of the present application.
  • 4B is a schematic diagram of still another first area and a second area provided by the embodiment of the present application.
  • 4C is a schematic diagram of still another first region and a second region provided by the embodiment of the present application.
  • 4D is a schematic diagram of still another first region and a second region provided by the embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of still another terminal according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of still another network device according to an embodiment of the present application.
  • the communication system 100 includes a terminal 101 and a network device 102.
  • the terminal 101 and the network device 102 communicate through air interfaces. among them:
  • Terminal 101 is a device that provides voice and/or data connectivity to a user, a handheld device with wired/wireless connectivity, or other processing device that is connected to a wireless modem.
  • the terminal 101 can communicate with one or more core networks via a Radio Access Network (RAN).
  • RAN Radio Access Network
  • the terminal 101 can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, and can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges with the RAN.
  • the terminal 101 may also be referred to as a user agent (User Agent) or a user device (User Device).
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistants
  • the terminal 101 may also be referred to as a user agent (User Agent) or a user device (User Device).
  • Network device 102 is a device deployed in a wireless access network to provide wireless communication functionality to terminal 101.
  • Network devices may include various forms of macro base stations, micro base stations, relay stations, access points, and the like.
  • the names of devices having the functions of the network device 102 may be different.
  • the network device 102 may be referred to as a network device in a new wireless technology (New Radio, NR).
  • New Radio NR
  • the SCDMA system may be referred to as a base station (NodeB, NB), or may also be referred to as an evolved Node B (eNB) or the like in the LTE system.
  • NodeB NodeB
  • eNB evolved Node B
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • an embodiment of the present application provides a schematic flowchart of a data transmission method, where the method includes but is not limited to the following steps:
  • the terminal sends physical layer control information by using a first multi-antenna transmission mode.
  • the terminal sends physical layer data information by using a second multi-antenna transmission mode.
  • the embodiment of the present application uses the "first" and the "second" to distinguish the multi-antenna transmission mode used by the terminal to transmit the physical layer control information and the physical layer data information, and the multi-antenna transmission mode may be a mode for transmitting data through multiple antennas. It can be understood that the first multi-antenna transmission mode and the second multi-antenna transmission mode may be the same multi-antenna transmission mode, or may be different multi-antenna transmission modes, which are not limited herein.
  • the first multi-antenna transmission mode and the second multi-antenna transmission mode may be jointly based on the same beam pairing set output by the same beam management process, and the beam pairing set may include a paired terminal side beam.
  • the paired terminal side beam and the paired network device side beam may be jointly based on the same beam pairing set output by the same beam management process.
  • the beam management process may include the following steps:
  • Step 11 The terminal sends an uplink beam measurement reference signal to the network device.
  • Step 13) The network device sends beam indication information to the terminal, where the beam indication information includes the determined paired terminal side beam.
  • Step 14 The terminal receives beam indication information sent by the network device.
  • the terminal sends four uplink beam measurement reference signals (uplink beam measurement reference signals 1, 3, 4, and 8) to the network device, and the network device performs based on the four uplink beam measurement reference signals and the matched downlink receive beams.
  • uplink beam measurement reference signals uplink beam measurement reference signals 1, 3, 4, and 8
  • the network device performs based on the four uplink beam measurement reference signals and the matched downlink receive beams.
  • Corresponding receiving strength calculations determining uplink beams 1, 3 and 8 whose receiving strength is greater than a preset intensity threshold from the four uplink beam measurement reference signals, that is, determining the paired terminal side beams 1, 3 and 8.
  • the first multi-antenna transmission mode and the second multi-antenna transmission mode may jointly transmit physical layer control information and physical respectively based on the paired terminal-side beams 1, 3, and 8 output by the beam management flow of the above steps 11) to 14) Layer data information.
  • the beam management process may include the above steps 11) to 14) and the following steps:
  • Step 22 The terminal performs corresponding receiving strength calculation and beam selection (ie, determining a paired network device side beam) based on the downlink beam measurement reference signal and the matched uplink receiving beam.
  • the network device sends four downlink beam measurement reference signals (downlink beam measurement reference signals 1, 2, 3, and 4) to the terminal, and the terminal responds according to the four downlink beam measurement reference signals and the matched uplink receiving beams.
  • the received strength calculation determines the downlink beams 1 and 2 whose received strength is greater than the preset intensity threshold from the four downlink beam measurement reference signals, that is, determines the paired network device side beams 1, 2, and 3. It can be seen that the sequence numbers 1, 2, 3, and 4 of the beam are actually the sequence numbers of the downlink measurement reference signals.
  • the first multi-antenna transmission mode and the second multi-antenna transmission mode may be based on the paired terminal-side beams 1, 3 and 8 and the beam management flow output of step 11) to step 14) and step 21), step 22)
  • the paired network device side beams 1, 2, and 3 respectively transmit physical layer control information and physical layer data information.
  • the network device may send the beam indication information to the terminal by using high layer signaling, such as a radio resource control message.
  • high layer signaling such as a radio resource control message.
  • the paired terminal side beam may be a semi-static configuration.
  • the multi-antenna transmission mode used for data transmission is based on beam pairing output by the beam management process, the antenna array gain is improved, and the paired beam transmission determined by the beam management process is performed. Improve the reliability of data transmission.
  • the transmission of the physical layer control information and the physical layer data information share the beam pairing output by the same beam management process, thereby avoiding beam pairing of the physical layer control information and the physical layer data information by using one beam management process, thereby reducing data transmission.
  • the delay and the reliability of the physical layer control information transmission are greater than the reliability of the physical layer data information transmission.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • step S201 may be: the terminal is on each Orthogonal Frequency Division Multiplexing (OFDM) symbol in the first region.
  • the loop uses the paired terminal side beams in the beam pairing set to transmit physical layer control information.
  • Step S202 may be: the terminal generates a physical layer data information by transmitting a beam of the terminal side with the number of transmission layers M based on the beam of the terminal side in the beam pairing set in the second area, where M is greater than zero and less than or equal to the paired terminal. A positive integer of the number of beams on the side.
  • the first area may be an area that occupies the physical layer control information of the uplink transmission time-frequency resource block that is scheduled to be sent to the terminal, and the second area may occupy an area of the uplink transmission time-frequency resource block that is scheduled to be sent to the terminal to send physical layer data information.
  • the uplink transmission time-frequency resource block that is allocated to the terminal by the first area and the second area may be the same time-frequency resource block that is continuous in both the time domain and the frequency domain, and the first area And the second area is on the uplink transmission time-frequency resource block, the time domain is the same, the frequency domain is different, and the first area and the second area are adjacent in the frequency domain.
  • the network device may notify the configuration of the waveform of the terminal by using high-level signaling, such as a radio resource control message, or when the terminal is in an idle state, the network device may pass the message2 in the random access process. Notify the configuration of the terminal waveform. If the network device notifies the terminal that the waveform is a cyclic prefixed orthogonal frequency division multiplexing (CP-OFDM) waveform, the network device may send the first configuration information to the terminal, where the first configuration information may indicate the first The area occupies a subband width of an uplink transmission time-frequency resource block that is scheduled to be sent to the terminal, and the terminal receives the first configuration information.
  • CP-OFDM cyclic prefixed orthogonal frequency division multiplexing
  • the first area may be an area of the uplink transmission time-frequency resource block, and the sub-band width is an area of the sub-band width indicated by the first configuration information, where the second area may be in the uplink transmission time-frequency resource block, except The area outside the first area; or the first area may be the center position of the uplink transmission time-frequency resource block, the sub-band width is the area of the sub-band width indicated by the first configuration information, and the second area may be the uplink transmission In the time-frequency resource block, an area other than the first area, and the like.
  • the first area and the second area are on the uplink transmission time-frequency resource block, the time domain is the same, the frequency domain is different, and the first area and the second area are adjacent in the frequency domain.
  • FIG. 3A a schematic diagram of a first area and a second area shown in FIG. 3A, where the entire area shown in FIG. 3A is an uplink transmission time-frequency resource block scheduled by the network device, if the terminal receives the first configuration.
  • the information indicates that the first area occupies the sub-band width of the time-frequency resource block is delta_1, and the unit of the delta_1 is a physical resource block (PRB).
  • the first area may be the uplink.
  • the network device may send the first configuration information to the terminal by using high-layer signaling, such as a radio resource control message, where the first area and the second area may be semi-statically configured through high-level signaling, thereby reducing physical layer control information and Transmission delay of physical layer data information.
  • high-layer signaling such as a radio resource control message
  • the paired terminal side beams in the beam pairing set may be cyclically configured in a sequential order or in another order, such as random, etc., and the terminal may be configured in the first region.
  • the beam on each OFDM symbol transmits physical layer control information.
  • the physical layer control information can be transmitted at a fixed rate.
  • a schematic diagram of still another first region and a second region shown in FIG. 3B, the first region from left to right OFDM symbols: symbol 1 to symbol 14, may be cyclically configured with the pairing in the beam pairing set described above.
  • the paired terminal side beams in the beam pairing set may be cyclically configured in a cyclic mode, and the terminal may use a beam configured on each OFDM symbol in the first region.
  • the physical layer control information is sent.
  • the loop mode may be as follows: x is a radio frame number, y is an ID number of the terminal, z is a symbol sequence number, k is a number of beams, and BeamID is a sequence number of the beam. Based on the analysis of the first embodiment, the sequence number of the beam is actually the sequence number of the downlink measurement reference signal.
  • ⁇ A, B, C, D ⁇ are integers unrelated to x, y, z.
  • the configured beam is beam 2, ie:
  • the configured beam is beam 2, ie:
  • the first region adopts the transmission diversity technology, which improves the quality of the physical layer control information transmission.
  • the number of transmission layers M may be based on a first modulation and coding scheme (MCS), a first rank indication (RI), and one or more acknowledgements given by the network device. (Acknowledgement, ACK) or Non-Acknowledgement (NACK) information is determined.
  • MCS modulation and coding scheme
  • RI first rank indication
  • ACK Acknowledgement
  • NACK Non-Acknowledgement
  • the process of determining the number of the transmission layers M may be: the network device sends the first modulation coding indication information to the terminal, and the terminal receives the first modulation coding indication information, where the first modulation coding indication information includes the first MCS or the first RI
  • the terminal receives the first MCS and the first RI.
  • the first RI is a range of values of the second RI
  • the first MCS is an initial value of the second MCS for each transport layer under each optional RI within a range of values defined by the first RI.
  • Terminal will be the first
  • the lower limit of the value range in the RI is determined as the initial value of the second RI
  • the MCS of each transport layer in the second RI in the first MCS is determined as the initial value of the second MCS.
  • the terminal may raise the second MCS, and the second RI does not change; or, when the number of ACK information received by the terminal is greater than the first preset
  • the threshold may be that the terminal may raise the second RI and determine that the MCS of each transport layer corresponding to the new second RI in the first MCS is the second MCS, and the second RI is the number M of transport layers.
  • the terminal may generate the physical layer data information based on the paired terminal side beam in the beam pairing set, the beam on the terminal side whose transmission layer number is the second RI, or the transmission rate is the rate corresponding to the second MCS.
  • the terminal sends the second RI and the second MCS to the network device through the uplink physical control channel.
  • the network device can receive the uplink physical control channel, determine the RI and MCS used for the uplink data transmission, and further decode the uplink data packet.
  • the first MCS is 5, the first RI is 1 to 2, the initial value of the second RI may be the lower limit 1 of the value range in the first RI, and the initial value of the second MCS may be the first MCS, when the terminal receives When the number of ACK information is greater than the first preset threshold, the terminal may raise the second MCS, for example, increase the second MCS to 6, and the second RI may still be the initial value, if the beam pairing set is used.
  • the value 5 does not change and can be lowered. For example, if the paired terminal-side beams in the beam pairing set are beams 1, 3, and 8, the terminal may pass any two of the beams 1, 3, and 8, and the two beams may all be initialized with the second MCS.
  • the physical layer data information is sent at a rate corresponding to the value of 5, or one of the two beams transmits physical layer data information at a rate corresponding to the second MCS of 4, and the other beam transmits the physical layer at a rate corresponding to the second MCS. Data information.
  • the second RI that is, the number of transmission layers M of the physical layer data information sent by the terminal side, may be greater than zero and less than or equal to the paired terminal side beams in the beam pairing set described in Embodiment 1.
  • the second area may also be divided into multiple sub-bands in order to meet the requirements of different sub-bands in the second area for quality of service (QoS).
  • QoS quality of service
  • Each of the plurality of subbands divided by the second region may have a different number of transmission layers and an MCS corresponding to each number of transmission layers, and the terminal may generate each subband based on the paired terminal side beams in the beam pairing set.
  • each of the sub-bands may have different The number of transmission layers and the number of MCSs corresponding to the number of transmission layers, the terminal may generate a beam on the terminal side of the number of transmission layers of each subband based on the paired terminal side beams in the beam pairing set, and corresponding to each transmission layer number
  • the MCS transmits physical layer data information, and each of the OFDM symbols in another partial sub-band is configured with one of the above-mentioned beam pairing sets, and the terminal may transmit by using a beam configured on each OFDM symbol in the first region.
  • the terminal configuration may be adopted data beam transmitter physical layer information on each OFDM symbol in the first region.
  • the second MCS and the second RI on each subband, and the configuration of each subband are sent to the network device through a physical uplink control channel. In this way, the network device can receive the uplink physical control channel, determine the RI and MCS used for the uplink data transmission, and the sub-bands divided by the uplink transmission, thereby implementing decoding of the uplink data packet.
  • the network device may transmit the area division of the second area by using high layer signaling, such as a radio resource control message transmission.
  • high layer signaling such as a radio resource control message transmission.
  • Information in order to reduce the overhead of signaling, the division of the subbands in the second region may be a semi-static configuration.
  • the second region shown in FIG. 3C divides two sub-bands, sub-band 1 and sub-band 2, and sub-band 1 and sub-band 2 have the same time domain and different frequency domains.
  • the first region of the embodiment of the present application adopts a diversity technology
  • the diversity technology improves the quality of the physical layer control information transmission
  • the second region adopts a spatial multiplexing technology, which improves the number of physical layer data information transmission.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the step S201 may be: the terminal uses the paired terminal side beam in the beam pairing set to cycle on each OFDM symbol in the first area.
  • Step S202 may be: the terminal generates a physical layer data information by transmitting a beam of the terminal side with the number of transmission layers M based on the paired terminal side beams in the beam pairing set in the second area, where M is greater than zero and less than or equal to the pairing. The number of beams on the terminal side.
  • the first area may be an area that occupies the physical layer control information of the uplink transmission time-frequency resource block that is scheduled to be sent to the terminal, and the second area may occupy an area of the uplink transmission time-frequency resource block that is scheduled to be sent to the terminal to send physical layer data information.
  • the first area and the second area are on the uplink transmission time-frequency resource block, the frequency domain is the same, the time domain is different, and the first area and the second area are adjacent in the time domain.
  • the network device may notify the configuration of the waveform of the terminal by using high-level signaling, such as a radio resource control message, or when the terminal is in an idle state, the network device may pass the message2 in the random access process. Notify the configuration of the terminal waveform. If the network device notifies the terminal that the waveform is a Discrete Fourier Transform Spreading Frequency Division Multiplexing (DFT-s-OFDM) waveform, the network device may send the second configuration information to the terminal, where the The second configuration information may indicate that the first area occupies the number of OFDM symbols of the uplink transmission time-frequency resource block scheduled to the terminal, and the terminal receives the second configuration information.
  • DFT-s-OFDM Discrete Fourier Transform Spreading Frequency Division Multiplexing
  • the first area may be an area of the left edge of the uplink transmission time-frequency resource block, where the number of OFDM symbols is the number of OFDM symbols indicated by the second configuration information
  • the second area may be the uplink transmission time-frequency resource block, An area other than the first area, and the like.
  • the first area and the second area are on the uplink transmission time-frequency resource block, the frequency domain is the same, the time domain is different, and the first area and the second area are adjacent in the time domain.
  • FIG. 4A a schematic diagram of still another first area and a second area shown in FIG. 4A
  • the entire area shown in FIG. 4A is an uplink transmission time-frequency resource block scheduled by the network device for the terminal, and if the terminal receives the second
  • the configuration information indicates that the number of OFDM symbols occupied by the first area occupying the time-frequency resource block is symbol_1, as shown in FIG. 4A, the first area may be the left edge of the uplink transmission time-frequency resource block, and the number of OFDM symbols is symbol_1
  • the area, the second area may be an area of the uplink transmission time-frequency resource block except the first area.
  • the network device may send the first configuration information to the terminal by using high-layer signaling, such as a radio resource control message, where the first area and the second area may be semi-statically configured through the high-level information.
  • high-layer signaling such as a radio resource control message
  • the scheduling of the first area and the second area can share a set of uplink resource scheduling signaling, which reduces the transmission delay of the physical layer control information and the physical layer data information.
  • a pair of terminal beam beams in the pair of beam pairings may be cyclically configured in a sequential order or in another order, such as random, etc.; or
  • the paired terminal side beams in the above beam pairing set are cyclically arranged in a cyclic mode.
  • the terminal can be configured in The beam on each OFDM symbol in the first region transmits physical layer control information. I will not repeat them here.
  • a schematic diagram of still another first region and a second region shown in FIG. 4B, the first region from left to right OFDM symbols: symbol 1 to symbol 4, may be sequentially configured with paired terminals in the beam pairing set described above Beams on the side: Beam 1, Beam 3, and Beam 8, that is, symbol 1 is configured with beam 1, symbol 2 is configured with beam 3, symbol 3 is configured with beam 8, and symbol 4 is configured with beam 1.
  • the first area may be further divided into multiple sub-bands, and the paired terminal side beams in the beam pairing set are respectively configured on different OFDM symbols of the same sub-band.
  • the first region shown in FIG. 4C is further divided into four sub-bands: sub-band 1, sub-band 2, sub-band 3, and sub-band 4, as shown in FIG. 4C, in sub-band 1
  • the OFDM symbol 1 can be configured with the paired terminal side beam 1 in the beam pairing set
  • the OFDM symbol 2 in the subband 1 can be configured with the paired terminal side beam 3 and subband 1 in the beam pairing set.
  • the OFDM symbol 3 can be configured with the paired terminal side beam 8 in the beam pairing set
  • the OFDM symbol 4 in the subband 1 can be configured with the paired terminal side beam 1 and subband 2 in the beam pairing set.
  • the OFDM symbol 1 can be configured with the paired terminal side beam 3 and the like in the above beam pairing set.
  • the number of transmission layers M may be determined based on a first modulation and coding parameter MCS, a first rank indication RI, and one or more acknowledgement ACKs or non-determined NACK information given by the network device.
  • the second region may also be divided into multiple sub-bands.
  • Each of the plurality of subbands divided by the second region may have a different number of transmission layers and an MCS corresponding to each number of transmission layers, and the terminal may generate each subband based on the paired terminal side beams in the beam pairing set.
  • each of the sub-bands may have different The number of transmission layers and the number of MCSs corresponding to the number of transmission layers, the terminal may generate a beam on the terminal side of the number of transmission layers of each subband based on the paired terminal side beams in the beam pairing set, and corresponding to each transmission layer number
  • the MCS transmits physical layer data information, and each of the OFDM symbols in another partial sub-band is configured with one of the above-mentioned beam pairing sets, and the terminal may transmit by using a beam configured on each OFDM symbol in the first region.
  • the terminal configuration may be adopted data beam transmitter physical layer information on each OFDM symbol in the first region.
  • the second region shown in FIG. 4D divides two sub-bands, sub-band 1 and sub-band 2, and sub-band 1 and sub-band 2 have the same time domain and different frequency domains.
  • the network device may transmit the split information of the area in the second area by using the high-layer signaling, such as the RRC message.
  • the sub-band division in the second area may be a semi-static configuration.
  • the first region of the embodiment of the present application adopts a diversity technology
  • the diversity technology improves the quality of the physical layer control information transmission
  • the second region adopts a spatial multiplexing technology, which improves the number of physical layer data information transmission.
  • the first area and the second area of the uplink transmission time-frequency resource block that are allocated to the terminal and are consecutive in the time domain and the frequency domain the first area and the second area
  • the transmission process on the area has a high similarity and can overcome the requirement of the power control path loss.
  • the first area and the second area can share a power control flow, avoiding being separate for the first area and the second area. Designing a power control flow that reduces the signaling pin.
  • the embodiment of the present application further provides a terminal, which can be applied to the foregoing method embodiments.
  • a schematic structural diagram of a terminal provided by an embodiment of the present disclosure may include:
  • the sending unit 501 is configured to send physical layer control information by using a first multi-antenna transmission mode, and send physical layer control information and physical layer data information by using a second multi-antenna transmission mode;
  • the first multi-antenna transmission mode and the second multi-antenna transmission mode are the same beam pairing set output based on the same beam management process, and the beam pairing set includes the paired terminal side beam.
  • the sending unit 501 is configured to: in each of the orthogonal frequency division multiplexing modulated OFDM symbols in the first region, cyclically use the paired terminal side beams in the beam pairing set to send physical layer control information;
  • the area is an area of the uplink transmission time-frequency resource block that the network device schedules to transmit the physical layer control information to the terminal.
  • the sending unit 501 is configured to generate, according to the paired terminal side beam in the beam pairing set, a beam of the terminal side with the transmission layer number M, to send physical layer data information, where M is greater than zero. And a positive integer that is less than or equal to the number of beams of the paired terminal side; the second area is an area of the uplink transmission time-frequency resource block that the network device schedules to transmit the physical layer data information to the terminal.
  • the terminal further includes:
  • the receiving unit 502 is configured to receive first modulation and coding indication information, and acknowledgment information or non-confirmation information of physical layer data information transmission, where the first modulation coding indication information includes a first modulation coding parameter MCS or a first rank indication RI;
  • the processing unit 503 is configured to adjust the first modulation and coding indication information according to the acknowledgement information or the non-confirmation information, to obtain the second modulation and coding indication information, where the second modulation and coding indication information includes the second MCS or the second RI;
  • the second RI is the number M of transmission layers.
  • the physical layer control information includes a second MCS of each of the transport layer number M and the transport layer number M.
  • the first area and the second area occupy the same uplink time-frequency resource block that is scheduled to be sent to the terminal, and the uplink transmission time-frequency resource block is continuous in the time domain and the frequency domain.
  • the waveform of the physical layer control information and the physical layer data information sent by the terminal is a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform;
  • CP-OFDM orthogonal frequency division multiplexing
  • the first region and the second region have the same time domain, different frequency domains, and the first region and the second region are adjacent in the frequency domain.
  • the waveform of the physical layer control information and the physical layer data information sent by the terminal is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-s-OFDM waveform;
  • the first region and the second region have the same frequency domain, different time domains, and the first region and the second region are adjacent in the time domain.
  • the multi-antenna transmission mode adopted for data transmission is based on beam pairing outputted by the beam management process, the antenna array gain is improved, and the paired beam transmission determined by the beam management process is improved, and the data transmission is improved. reliability.
  • the transmission of the physical layer control information and the physical layer data information share the beam pairing output by the same beam management process, thereby avoiding beam pairing of the physical layer control information and the physical layer data information by using one beam management process, thereby reducing data transmission.
  • the delay and the reliability of the physical layer control information transmission are greater than the reliability of the physical layer data information transmission.
  • the embodiment of the present application further provides a network device, which can be applied to the foregoing method embodiments.
  • FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present disclosure, which may include:
  • the sending unit 601 is configured to send beam indication information to the terminal, where the beam indication information includes a beam pairing set output by the beam management process, where the beam pairing set includes a paired terminal side beam;
  • the beam management process is based on the first multi-antenna transmission mode and the second multi-antenna transmission mode;
  • the first multi-antenna transmission mode is a multi-antenna transmission mode used by the terminal to transmit physical layer control information
  • the second multi-antenna transmission mode is a multi-antenna transmission mode used by the terminal to transmit physical layer data information.
  • the sending unit 601 is further configured to send configuration information to the terminal, where the configuration information includes that the first area occupies a sub-band width of an uplink transmission time-frequency resource block that is scheduled to be sent to the terminal, or the first area occupies an uplink that is scheduled to be sent to the terminal.
  • the number of symbols of OFDM is modulated by orthogonal frequency division multiplexing of transmission time-frequency resource blocks.
  • the sending unit 601 is further configured to send the first modulation and coding indication information, and the acknowledgement information or the non-confirmation information of the physical layer data information transmission to the terminal, where the first modulation and coding indication information includes the first modulation and coding parameter MCS or the first a rank indicating RI;
  • the first modulation coding indication information, the acknowledgement information of the physical layer data information transmission, or the non-confirmation information is used to determine the number of transmission layers of the physical layer data information.
  • the multi-antenna transmission mode adopted for data transmission is based on beam pairing outputted by the beam management process, the antenna array gain is improved, and the paired beam transmission determined by the beam management process is improved, and the data transmission is improved. reliability.
  • the transmission of the physical layer control information and the physical layer data information share the beam pairing output by the same beam management process, thereby avoiding beam pairing of the physical layer control information and the physical layer data information by using one beam management process, thereby reducing data transmission.
  • the delay and the reliability of the physical layer control information transmission are greater than the reliability of the physical layer data information transmission.
  • FIG. 7 is a schematic structural diagram of still another terminal provided by an embodiment of the present application, where the terminal includes a processor 701, a memory 702, and a communication module 703.
  • the memory 702 includes, but is not limited to, a random access memory (English: random access memory, abbreviated as: RAM), a read-only memory (English: read-only memory, abbreviated as: ROM) or an erasable programmable read-only memory (English: Erasable programmable read-only memory (abbreviation: EPROM), the memory 702 is used to store related program codes and related data.
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable programmable read-only memory
  • the processor 701 may be one or more central processing units (English: central processing unit, CPU for short). In the case that the processor 701 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.
  • the processor 701 in the terminal reads the program code stored in the memory 702 to perform the following operations:
  • the first multi-antenna transmission mode and the second multi-antenna transmission mode are output based on the same beam management process.
  • the same beam pairing set, the beam pairing set includes the paired terminal side beams.
  • the processor 701 in the terminal reads the program code stored in the memory 702, and can also perform the following operations:
  • the communication module 703 Transmitting, by the communication module 703, each of the orthogonal frequency division multiplexing modulated OFDM symbols in the first region, cyclically using the paired terminal side beams in the beam pairing set to transmit physical layer control information; the first region is a network device scheduling to the terminal The area of the uplink transmission time-frequency resource block that transmits the physical layer control information.
  • the processor 701 in the terminal reads the program code stored in the memory 702, and can also perform the following operations:
  • the communication module 703 Transmitting, by the communication module 703, a beam on the terminal side of the pair of transmission layers based on the paired terminal side beams in the beam pairing set in the second region to transmit physical layer data information, where M is greater than zero and less than or equal to the paired terminal side
  • M is greater than zero and less than or equal to the paired terminal side
  • the positive number of the number of beams; the second area is an area of the uplink transmission time-frequency resource block that the network device schedules to transmit the physical layer data information to the terminal.
  • the processor 701 in the terminal reads the program code stored in the memory 702, and can also perform the following operations:
  • first modulation coding indication information includes a first modulation coding parameter MCS or a first rank indication RI;
  • the second RI is the number M of transmission layers.
  • the physical layer control information includes a second MCS of each of the transport layer number M and the transport layer number M.
  • the first area and the second area occupy the same uplink time-frequency resource block that is scheduled to be sent to the terminal, and the uplink transmission time-frequency resource block is continuous in the time domain and the frequency domain.
  • the waveform of the physical layer control information and the physical layer data information sent by the terminal is a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform
  • the first region and the second region have the same time domain, different frequency domains, and the first region and the second region are adjacent in the frequency domain.
  • the waveform of the physical layer control information and the physical layer data information sent by the terminal is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-s-OFDM waveform
  • the first region and the second region have the same frequency domain, different time domains, and the first region and the second region are adjacent in the time domain.
  • the multi-antenna transmission mode adopted for data transmission is based on beam pairing outputted by the beam management process, the antenna array gain is improved, and the paired beam transmission determined by the beam management process is improved, and the data transmission is improved. reliability.
  • the transmission of the physical layer control information and the physical layer data information share the beam pairing output by the same beam management process, thereby avoiding beam pairing of the physical layer control information and the physical layer data information by using one beam management process, thereby reducing data transmission.
  • the delay and the reliability of the physical layer control information transmission are greater than the reliability of the physical layer data information transmission.
  • FIG. 8 is a schematic structural diagram of still another network device according to an embodiment of the present application.
  • the network device includes a processor 801, a memory 802, and a communication module 803.
  • Memory 802 includes, but is not limited to, a RAM, ROM or EPROM for storing associated program code and associated data.
  • the processor 801 may be one or more CPUs.
  • the CPU may be a single core CPU or a multi-core CPU.
  • the processor 801 in the network device reads the program code stored in the memory 802 to perform the following operations:
  • the communication module 803 Transmitting, by the communication module 803, beam indication information to the terminal, where the beam indication information includes a beam pairing set output by the beam management process, and the beam pairing set includes a paired terminal side beam;
  • the beam management process is based on the first multi-antenna transmission mode and the second multi-antenna transmission mode;
  • the first multi-antenna transmission mode is a multi-antenna transmission mode used by the terminal to transmit physical layer control information
  • the second multi-antenna transmission mode is a multi-antenna transmission mode used by the terminal to transmit physical layer data information.
  • the processor 801 in the network device reads the program code stored in the memory 802, and can also perform the following operations:
  • the configuration information is sent to the terminal by the communication module 803, where the configuration information includes the sub-band width of the uplink transmission time-frequency resource block that the first area occupies to the terminal, or the first area occupies the positive transmission time-frequency resource block that is scheduled to the terminal.
  • the frequency division multiplexing modulates the number of symbols of OFDM.
  • the processor 801 in the network device reads the program code stored in the memory 802, and can also perform the following operations:
  • the communication module 803 Transmitting, by the communication module 803, the first modulation and coding indication information, and the acknowledgment information or the non-confirmation information of the physical layer data information transmission, where the first modulation coding indication information includes the first modulation coding parameter MCS or the first rank indication RI;
  • the first modulation coding indication information, the acknowledgement information of the physical layer data information transmission, or the non-confirmation information is used to determine the number of transmission layers of the physical layer data information.
  • the multi-antenna transmission mode adopted for data transmission is based on beam pairing outputted by the beam management process, the antenna array gain is improved, and the paired beam transmission determined by the beam management process is improved, and the data transmission is improved. reliability.
  • the transmission of the physical layer control information and the physical layer data information share the beam pairing output by the same beam management process, thereby avoiding beam pairing of the physical layer control information and the physical layer data information by using one beam management process, thereby reducing data transmission.
  • the delay and the reliability of the physical layer control information transmission are greater than the reliability of the physical layer data information transmission.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above software function parts can be stored in the storage unit.
  • the storage unit includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform some of the steps of the methods described in various embodiments of the present application.
  • the storage unit includes: one or more memories, such as a read-only memory (ROM), a random access memory (RAM), and an electrically erasable programmable read only memory (EEPROM). and many more.
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read only memory
  • the storage unit can exist independently or in combination
  • the controller is integrated.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a Solid State DisB (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium eg, a Solid State DisB (SSD)

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

Abstract

La présente invention se rapporte au domaine techniques des communications, et concerne en particulier un procédé de transmission de données et un dispositif associé. Le procédé comprend les étapes suivantes : un terminal envoie des informations de commande de couche physique à l'aide d'un premier mode de transmission multi-antenne, et envoie les informations de commande de couche physique et des informations de données de couche physique à l'aide d'un second mode de transmission multi-antenne, le premier mode de transmission multi-antenne et le second mode de transmission multi-antenne étant basés sur les mêmes ensembles de paires de faisceaux émis durant un processus de gestion de faisceau, chaque ensemble de paires de faisceaux comprenant des faisceaux côté terminal appariés. Via l'implémentation des modes de réalisation de la présente invention, des modes de transmission multi-antenne sont utilisés pour la transmission de données sur la base de paires de faisceaux émises durant le processus de gestion de faisceau, ce qui améliore le gain du réseau d'antennes. En outre, des données sont transmises au moyen des faisceaux appariés déterminés par le processus de gestion de faisceau, ce qui accroît la fiabilité de transmission des données.
PCT/CN2017/098147 2017-06-14 2017-08-18 Procédé de transmission de données et dispositif associé WO2018227752A1 (fr)

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