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WO2020088609A1 - Dispositif et procédé de transmission de données de bout en bout - Google Patents

Dispositif et procédé de transmission de données de bout en bout Download PDF

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Publication number
WO2020088609A1
WO2020088609A1 PCT/CN2019/114825 CN2019114825W WO2020088609A1 WO 2020088609 A1 WO2020088609 A1 WO 2020088609A1 CN 2019114825 W CN2019114825 W CN 2019114825W WO 2020088609 A1 WO2020088609 A1 WO 2020088609A1
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WIPO (PCT)
Prior art keywords
terminal
sidelink
channels
sub
pscch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/114825
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English (en)
Inventor
Huei-Ming Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN201980062147.4A priority Critical patent/CN112840588B/zh
Publication of WO2020088609A1 publication Critical patent/WO2020088609A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • 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

Definitions

  • the present disclosure relates to the field of wireless communication technologies, and more particularly, to an end-to-end data transmission method and device.
  • sidelink In legacy design in Long Term Evolution (LTE) Vehicle-to-X (V2X) specifications, sidelink has been specified for direct communication between User Equipments (UEs) .
  • sidelink physical channels includes: Physical sidelink Control Channel (PSCCH) and Physical sidelink Shared Channel (PSSCH) .
  • PSSCH is used to carry data from a sending UE for sidelink communication, and PSCCH indicates resource and other transmission parameters used by a receiving UE for PSSCH reception.
  • V2X direct vehicle-to-X
  • 5G-NR new radio
  • the present disclosure provides an end-to-end data transmission method and device.
  • the present disclosure provides an end-to-end data transmission method, which may comprise encoding a sidelink control information (SCI) as per sidelink sub-channel size, modulating the encoded SCI, mapping the modulated SCI onto a physical sidelink control channel (PSCCH) , and transmitting the PSCCH repeatedly in the same sidelink sub-channels that are used for carrying the physical sidelink shared channel (PSSCH) corresponding to the PSCCH, when frequency domain sidelink sub-channels are used for transmitting a PSSCH.
  • SCI sidelink control information
  • PSCCH physical sidelink control channel
  • the sidelink sub-channels in the frequency domain are consecutive.
  • the method may further comprise receiving information of the sidelink sub-channels.
  • the method may further comprise receiving a sidelink resource pool for sidelink transmission, and determining the sidelink sub-channels according to the resources of PSSCH and PSCCH in the sidelink resource pool.
  • the present disclosure provides an end-to-end data transmission method, which may comprise monitoring configured PSCCHs, receiving its PSCCHs in sidelink sub-channels, and decoding SCI from the received PSCCHs.
  • decoding SCI from the received PSCCHs comprises: demodulating each PSCCH per sidelink sub-channel and decoding the SCI individually.
  • decoding SCI from the received PSCCHs comprises: combining the received PSCCHs incrementally across the sidelink sub-channels and decoding the combined SCI.
  • the present disclosure provides a terminal, which may comprises an encoding unit, a modulating unit, a mapping unit and a transmitting unit; wherein the encoding unit is configured to encode a SCI as per sidelink sub-channel size; the modulating unit is configured to modulate the encoded SCI; the mapping unit is configured to map the modulated SCI onto a PSCCH; the transmitting unit is configured to transmit the PSCCH repeatedly in the same sidelink sub-channels that are used for carrying the PSSCH corresponding to the PSCCH, when frequency domain sidelink sub-channels are used for transmitting a PSSCH.
  • the sidelink sub-channels in the frequency domain are consecutive.
  • the terminal may further comprise a receiving unit, wherein the receiving unit is configured to receive information of the sidelink sub-channels.
  • the terminal may further comprise a determining unit and a receiving unit, wherein the receiving unit is configured to receive a sidelink resource pool for sidelink transmission and the determining unit is configured to determine the sidelink sub-channels according to the resources of PSSCH and PSCCH in the sidelink resource pool.
  • the present disclosure provides a terminal, which may comprise a receiving unit and a decoding unit, wherein the receiving unit is configured to monitor configured PSCCHs and receive its PSCCHs in sidelink sub-channels and the decoding unit is configured to decode SCI from the received PSCCHs.
  • the decoding unit is further configured to demodulate each PSCCH per sidelink sub-channel and decode the SCI individually.
  • the decoding unit is further configured to combine the received PSCCHs incrementally across the sidelink sub-channels and decode the combined SCI.
  • the present disclosure provides a terminal device for performing the method in the above first aspect or any of the possible implementations of the first aspect.
  • the terminal device includes functional modules for performing the method in the above first aspect or any of the possible implementations of the first aspect.
  • the present disclosure provides a terminal device, including a processor and a memory; wherein the memory is configured to store instructions executable by the processor and the processor is configured to perform the method in the above first aspect or any of the possible implementations of the first aspect.
  • the present disclosure provides a computer readable medium for storing computer programs, which include instructions for executing the above first aspect or any possible implementation of the first aspect.
  • the present disclosure provides a computer program product including a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is executable to cause a computer to perform the method in the above first aspect or any possible implementation of the first aspect.
  • the present disclosure provides a terminal device for performing the method in the above second aspect or any of the possible implementations of the second aspect.
  • the terminal device includes functional modules for performing the method in the above second aspect or any of the possible implementations of the second aspect.
  • the present disclosure provides a terminal device, including a processor and a memory; wherein the memory is configured to store instructions executable by the processor and the processor is configured to perform the method in the above second aspect or any of the possible implementations of the second aspect.
  • the present disclosure provides a computer readable medium for storing computer programs, which include instructions for executing the above second aspect or any possible implementation of the second aspect.
  • the present disclosure provides a computer program product including a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is executable to cause a computer to perform the method in the above second aspect or any possible implementation of the second aspect.
  • the end-to-end data transmission method of the embodiment of the disclosure aims to solve the problem of transmitting power mismatch between PSCCH and PSSCH transmissions described in the present disclosure and at the same time allowing low latency transmission for large data TB size messages.
  • Other benefits from adopting the above-mentioned transmission structure include: to improve reliability for PSCCH reception by combining at the receiving terminal the repeated control channel transmissions; no additional receiver complexity in decoding control channel information; and allowing flexible UE implementation of control channel reception and decoding of PSCCH, as it is entirely up to the receiving terminal to perform combining of PSCCH before decoding.
  • FIG. 1 schematically illustrates an end-to-end data transmission system architecture according to an embodiment of the present disclosure.
  • FIG. 2 schematically illustrates a structure for sidelink control channel repetition over multiple sidelink sub-channels.
  • FIG. 3 schematically illustrates a flowchart of an end-to-end data transmission method according to an embodiment of the present disclosure.
  • FIG. 4 schematically illustrates a flowchart of an end-to-end data transmission method according to another embodiment of the present disclosure.
  • FIG. 5 schematically illustrates a flowchart of an end-to-end data transmission method according to another embodiment of the present disclosure.
  • FIG. 6 schematically illustrates a flowchart of an end-to-end data transmission method according to another embodiment of the present disclosure.
  • FIG. 7 schematically illustrates a terminal according to an embodiment of the present disclosure.
  • FIG. 8 schematically illustrates a terminal according to another embodiment of the present disclosure.
  • FIG. 9 schematically illustrates a terminal according to another embodiment of the present disclosure.
  • FIG. 10 schematically illustrates a terminal according to another embodiment of the present disclosure.
  • FIG. 11 schematically illustrates a terminal device according to an embodiment of the present disclosure.
  • FIG. 12 schematically illustrates a terminal device according to another embodiment of the present disclosure.
  • the meaning of "a plurality” is at least two, for example, two, three, etc., unless specifically defined otherwise.
  • “And/or” describing the association relationship of the associated objects, indicates that there may be three relationships, such as A and/or B, which may indicate that there are three cases of single A, single B and both A and B.
  • the symbol “/” generally indicates that the contextual object is an "or” relationship.
  • the terms “first” and “second” are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • HARQ Hybrid Automatic Repeat reQuest
  • Rx-UE receiving UE
  • Tx-UE sending UE
  • HARQ Hybrid Automatic Repeat reQuest
  • s retransmission
  • TB data transport block
  • the sidelink structure comprises a first physical sidelink control channel (PSCCH) for signaling sidelink channel information and then followed by a physical sidelink shared channel (PSSCH) for carrying data TB within a fixed sub-channel block.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • additional sub-channels can be used by means of slot-aggregation in the time domain.
  • the present disclosure provides an end-to-end data transmission method and device.
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • NR New Radio
  • the communication between a terminal and a network device in the wireless communication network may be performed according to any suitable generation communication protocols, including , but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • any suitable generation communication protocols including , but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • terminal refers to any end device that can access a wireless communication network and receive services therefrom.
  • the terminal may include user equipment (UE) , which is also referred to as a mobile terminal or mobile user equipment and so on.
  • UE user equipment
  • the user equipment may be a mobile terminal such as a mobile telephone (also referred to as a cellular telephone) or a computer having a mobile terminal such as portable, pocket, hand-held, vehicle-mounted mobile apparatuses or a mobile apparatus with a built-in computer.
  • the term “network device” refers to a device in a wireless communication network via which a terminal accesses the network and receives services therefrom.
  • the network device may include a base station (BS) , an access point (AP) , a Mobile Management Entity (MME) , a Multi-cell/Multicast Coordination Entity (MCE) , a Access and Mobility Management Function (AMF) /User Plane Function (UPF) , a gateway, a server, a controller or any other suitable device in the wireless communication network.
  • BS base station
  • AP access point
  • MME Mobile Management Entity
  • MCE Multi-cell/Multicast Coordination Entity
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • the BS may be, for example, a base transceiver station (BTS) in the GSM or the CDMA, or may be a Node B in the WCDMA, or may be an evolutional Node B (eNB or e-NodeB) in the LTE or the LTE-A, or may be a gNB in the NR, and the present disclosure is not limited thereto.
  • BTS base transceiver station
  • eNB evolutional Node B
  • e-NodeB evolutional Node B
  • FIG. 1 schematically illustrates an end-to-end data transmission system architecture according to an embodiment of the present disclosure.
  • the end-to-end data transmission system 10 comprises: a network device 11, a first terminal 12 (which refers here to a sending terminal) and a second terminal 13 (which refers here to a receiving terminal) .
  • Communication between the network device 11 and the first terminal 12, as well as communication between the network device 11 and the second terminal 13, is implemented through a first-type air interface (e.g. a Uu Interface in cellular mobile communication) .
  • a second-type air interface e.g. a sidelink air interface
  • a sidelink resource for the first terminal 12 transmission can be scheduled by the network device 11.
  • DCI downlink control information
  • a sidelink resource pool for the first terminal 12 transmission can be configured by the network device 11.
  • a sidelink resource pool for sidelink transmission is configured statically or semi-statically by the network device 11.
  • the first terminal 12 shall determine the PSSCH resource and PSCCH resource according to the resources of PSSCH and PSCCH in the sidelink resource pool.
  • the first terminal 12 After the first terminal 12 receives or determines the PSSCH resource and PSCCH resource, it shall transmit the PSSCH resource and other transmission parameters on PSCCH to the second terminal 13 on the PSCCH, and transmit its sidelink data on PSSCH to the second terminal 13 based on the PSSCH resource.
  • first terminals and second terminals there may be multiple first terminals and second terminals.
  • FIG. 1 in order to simplify the drawing, only the first terminal 12 and the second terminal 13 are exemplarily illustrated. However, it does not mean that the number of the first terminal 12 and the second terminal 13 is limited.
  • sidelink data may include user data of the user plane, and may also include signaling or messages of the control plane.
  • additional sub-channels can be used by means of slot-aggregation in the time domain.
  • the additional sub-channels appended at the end is not ideal for sidelink transmissions that require low latency delivery.
  • variable number of sub-channels in the frequency domain is configured to adapt to varying data TB sizes.
  • only one sub-channel block is used for transmitting PSCCH and multiple sub-channels are used for transmitting PSSCH, there is a mismatch of amount of sidelink resources used in the frequency domain for transmitting PSCCH and the PSSCH corresponding to the PSCCH.
  • the power that is required to transmit PSCCH would be much less than that for transmitting PSSCH. Consequently, the first terminal 12 will need to use an additional orthogonal frequency division multiplexing (OFDM) symbol between the PSCCH and PSSCH for automatic gain control (AGC) training at the second terminal 13 to account for the power mismatch.
  • OFDM orthogonal frequency division multiplexing
  • the present disclosure further provides a structure for sidelink control channel repetition when PSSCH is transmitted over multiple sidelink sub-channels in the frequency domain to solve the above problems.
  • FIG. 2 schematically illustrates a structure for sidelink control channel repetition over multiple sidelink sub-channels.
  • an exemplary structure (100) of sidelink control channel repetition over multiple sidelink sub-channels is provided.
  • multiple sidelink sub-channels (103’s) are used for transmitting a PSSCH (102) .
  • its associated PSCCH (101) is transmitted as well. Since multiple sidelink sub-channels (103’s) are used for carrying one PSSCH (102) , the same PSCCH (101) is repeated (104’s) and transmitted in all sidelink sub-channels (103’s) .
  • a sidelink sub-channel may occupy one or multiple slot (s) in time domain, or may occupy one or multiple OFDM symbol (s) , but the present disclosure is not limited to the examples described herein.
  • the first terminal 12 encodes sidelink control information (SCI) as per sidelink sub-channel size.
  • SCI sidelink control information
  • the first terminal 12 may also encode the SCI based on size of multiple sidelink sub-channels.
  • the number of the sidelink sub-channels used for SCI encoding shall be smaller than the number of the sidelink sub-channels used to carry the PSSCH.
  • the encoded SCI is then modulated and mapped to a physical sidelink control channel (PSCCH) .
  • PSCCH physical sidelink control channel
  • the second terminal 13 monitors configured PSCCHs, receives SCI from the received PSCCH’s in multiple sidelink sub-channels, and performs either to demodulate each PSCCH per sidelink sub-channel and attempt to decode SCI individually, or to combine PSCCH incrementally across sidelink sub-channels before attempting to decode SCI.
  • sub-channels in the frequency domain are consecutive.
  • the PSCCH is repeated and transmitted in the same multiple consecutive sidelink sub-channels that are used for carrying the PSSCH corresponding to the PSCCH.
  • the first terminal 12 and the second terminal 13 may receive synchronization signals sent by each other.
  • the first terminal 12 and the second terminal 13 may send the synchronization signals to each other by broadcast, so that other second terminals 13 communicating with the first terminal 12 through the sidelink may receive the synchronization signals sent by the first terminals.
  • the synchronization signal may include clock information (atransmit clock) and identity (ID) information. Therefore, when receiving the synchronization signals sent by each other, the first terminal 12 and the second terminal 13 may obtain the clock information and ID information of each other, and then the first terminal 12 and the second terminal 13 may complete synchronization.
  • a synchronization process may refer to descriptions about synchronization in a conventional art and will not be elaborated in the embodiment of the disclosure.
  • the first terminal 12 and the second terminal 13 may receive broadcast channels sent by the other.
  • the first terminal 12 and the second terminal 13 may receive the broadcast channels of each other to determine transmission bandwidths of each other and determine whether they are within coverage of the network device 11 or not.
  • the network device 11 may receive a resource request for the sidelink data transmission sent by the first terminal 12 before transmitting the specific DCI to the first terminal 12 for transmitting the PSSCH resource.
  • the resource request for the sidelink data transmission may be a scheduling request (SR) or a buffer status report (BSR) .
  • the network device 11 may also receive sidelink channel state information (CSI) from the first terminal 12 to feedback the channel quality information in sidelink before transmitting the specific DCI to the first terminal 12 for transmitting the PSSCH resource.
  • CSI sidelink channel state information
  • the SCI format may include a field of frequency domain resource assignment and a field of time domain resource assignment.
  • the fields of frequency domain resource assignment and time domain resource assignment are configured to indicate, respectively, the frequency resource and the time resource in the sidelink allocated to the first terminal 12 for the sidelink transmission.
  • the SCI format may include a field of sub-channel block assignment to indicate the time-frequency domain resource in the sidelink.
  • the field of NR sub-channel assignment is configured to indicate the sub-channel block in the sidelink for the sidelink transmission or reception.
  • a sub-channel block may be defined as a preset number of consecutive OFDM symbols in the time domain and a preset number of consecutive subcarriers in the frequency domain.
  • the frequency-domain resource for the sidelink transmission and reception may be determined by the first terminal 12’s active bandwidth part for sidelink transmission and the second terminal 13’s active bandwidth part for sidelink reception.
  • the time-domain resource for the sidelink transmission and reception may be based on the time-domain resource set/table configured to the first terminal 12 and the time-domain resource set/table configured to the second terminal 13.
  • the SCI may further include a field of Modulation and coding scheme. This field is configured to indicate the modulation and coding scheme of the sidelink data transmitted in the sidelink.
  • the first terminal 12 encodes and modulates the sidelink data to be sent by using the modulation and coding scheme, and the second terminal 13 uses the modulation and coding scheme to demodulate and decode the received sidelink data.
  • FIG. 3 schematically illustrates a flowchart of an end-to-end data transmission method according to an embodiment of the present disclosure. The method may be applied, for example, to the end-to-end data transmission system 10 in FIG. 1.
  • the method 20 comprises:
  • Step S202 the network device 11 transmits a DCI on PDCCH to the first terminal 12 for scheduling the sidelink resource for PSCCH and PSSCH.
  • the first terminal 12 and the second terminal 13 may receive synchronization signals sent by each other.
  • the first terminal 12 and the second terminal 13 may send the synchronization signals to each other by broadcast, so that other second terminals 13 communicating with the first terminal 12 through the sidelink may receive the synchronization signals sent by the first terminals.
  • the synchronization signal may include clock information (atransmit clock) and identity (ID) information. Therefore, when receiving the synchronization signals sent by each other, the first terminal 12 and the second terminal 13 may obtain the clock information and ID information of each other, and then the first terminal 12 and the second terminal 13 may complete synchronization.
  • a synchronization process may refer to descriptions about synchronization in a conventional art and will not be elaborated in the embodiment of the disclosure.
  • the first terminal 12 and the second terminal 13 may receive broadcast channels sent by the other.
  • the first terminal 12 and the second terminal 13 may receive the broadcast channels of each other to determine transmission bandwidths of each other and determine whether they are within coverage of the network device 11 or not.
  • the network device 11 may receive a resource request for the sidelink data transmission sent by the first terminal 12 before transmitting the specific DCI to the first terminal 12 for transmitting the PSSCH resource.
  • the resource request for the sidelink data transmission may be a scheduling request (SR) or a buffer status report (BSR) .
  • the network device 11 may also receive sidelink channel state information (CSI) from the first terminal 12 to feedback the channel quality information in sidelink before transmitting the specific DCI to the first terminal 12 for transmitting the PSSCH resource before Step S202.
  • CSI sidelink channel state information
  • the first terminal 12 monitors the DCI and receives the sidelink resource for PSCCH and PSSCH, including information of sub-channels for PSCCH transmission.
  • Variable number of sub-channels in the frequency domain for PSSCH is configured to adapt to varying data TB sizes.
  • sub-channels in the frequency domain are consecutive.
  • Step S204 the first terminal 12 encodes SCI as per sidelink sub-channel size, modulates the encoded SCI and then maps the modulated SCI onto PSCCH.
  • the first terminal 12 transmits the PSCCH repeatedly in the same multiple sidelink sub-channels that are used for carrying the PSSCH corresponding to the PSCCH.
  • the SCI format may include a field of frequency domain resource assignment and a field of time domain resource assignment.
  • the fields of frequency domain resource assignment and time domain resource assignment are configured to indicate, respectively, the frequency resource and the time resource in the sidelink allocated to the first terminal 12 for the sidelink transmission.
  • the SCI format may include a field of sub-channel block assignment to indicate the time-frequency domain resource in the sidelink.
  • the field of NR sub-channel assignment is configured to indicate the sub-channel block in the sidelink for the sidelink transmission or reception.
  • a sub-channel block may be defined as a preset number of consecutive OFDM symbols in the time domain and a preset number of consecutive subcarriers in the frequency domain.
  • the frequency-domain resource for the sidelink transmission and reception may be determined by the first terminal 12’s active bandwidth part for sidelink transmission and the second terminal 13’s active bandwidth part for sidelink reception.
  • the time-domain resource for the sidelink transmission and reception may be based on the time-domain resource set/table configured to the first terminal 12 and the time-domain resource set/table configured to the second terminal 13.
  • the SCI may further include a field of Modulation and coding scheme. This field is configured to indicate the modulation and coding scheme of the sidelink data transmitted in the sidelink.
  • the first terminal 12 encodes and modulates the sidelink data to be sent by using the modulation and coding scheme, and the second terminal 13 uses the modulation and coding scheme to demodulate and decode the received sidelink data.
  • step S206 the second terminal 13 monitors configured PSCCHs, receives its PSCCH (s) in multiple sidelink sub-channels and decodes SCI from the received PSCCH (s) .
  • the second terminal 13 demodulates each PSCCH per sidelink sub-channel and attempts to decode SCI individually.
  • the second terminal 13 combines PSCCH (s) incrementally across sidelink sub-channels and attempts to decode combined SCI.
  • the end-to-end data transmission method of the embodiment of the disclosure aims to solve the previously described problem of transmitting power mismatch between PSCCH and PSSCH transmissions and at the same time allowing low latency transmission for large data TB size messages.
  • Other benefits from adopting the above-mentioned transmission structure include: to improve reliability for PSCCH reception by combining at the receiving terminal the repeated control channel transmissions; no additional receiver complexity in decoding control channel information; and allowing flexible UE implementation of control channel reception and decoding of PSCCH, as it is entirely up to the receiving terminal to perform combining of PSCCH before decoding.
  • FIG. 4 schematically illustrates a flowchart of an end-to-end data transmission method according to another embodiment of the present disclosure. The method may also be applied, for example, to the end-to-end data transmission system 10 in FIG. 1.
  • the method 30 comprises:
  • Step S302 the network device 11 statically or semi-statically configures a sidelink resource pool for the first terminal 12.
  • the network device 11 may configure the sidelink resource pool for the first terminal 12 by RRC (Radio Resource Control) message.
  • RRC Radio Resource Control
  • the first terminal 12 receives and stores the sidelink resource pool for sidelink transmission.
  • Step S304 the first terminal 12 determines the PSSCH resource and PSCCH resource for sidelink transmission to the second terminal 13 according to the resources of PSSCH and PSCCH in the sidelink resource pool.
  • the first terminal 12 may learn, for example, which sidelink resources (including PSSCH resources and PSCCH resources) in the sidelink resource pool are not occupied by monitoring other sidelink transmissions.
  • Variable number of sub-channels in the frequency domain for PSSCH is configured to adapt to varying data TB sizes.
  • sub-channels in the frequency domain are consecutive.
  • the first terminal 12 and the second terminal 13 may receive synchronization signals sent by each other.
  • the first terminal 12 and the second terminal 13 may send the synchronization signals to each other by broadcast, so that other second terminals 13 communicating with the first terminal 12 through the sidelink may receive the synchronization signals sent by the first terminals.
  • the synchronization signal may include clock information (atransmit clock) and identity (ID) information. Therefore, when receiving the synchronization signals sent by each other, the first terminal 12 and the second terminal 13 may obtain the clock information and ID information of each other, and then the first terminal 12 and the second terminal 13 may complete synchronization.
  • a synchronization process may refer to descriptions about synchronization in a conventional art and will not be elaborated in the embodiment of the disclosure.
  • the first terminal 12 and the second terminal 13 may receive broadcast channels sent by the other.
  • the first terminal 12 and the second terminal 13 may receive the broadcast channels of each other to determine transmission bandwidths of each other and determine whether they are within coverage of the network device 11 or not.
  • Step S306 the first terminal 12 encodes SCI as per sidelink sub-channel size, modulates the encoded SCI and then maps the modulated SCI onto PSCCH.
  • the first terminal 12 transmits the PSCCH repeatedly in the same multiple sidelink sub-channels that are used for carrying the PSSCH corresponding to the PSCCH.
  • the SCI format may include a field of frequency domain resource assignment and a field of time domain resource assignment.
  • the fields of frequency domain resource assignment and time domain resource assignment are configured to indicate, respectively, the frequency resource and the time resource in the sidelink allocated to the first terminal 12 for the sidelink transmission.
  • the SCI format may include a field of sub-channel block assignment to indicate the time-frequency domain resource in the sidelink.
  • the field of NR sub-channel assignment is configured to indicate the sub-channel block in the sidelink for the sidelink transmission or reception or reception.
  • a sub-channel block may be defined as a preset number of consecutive OFDM symbols in the time domain and a preset number of consecutive subcarriers in the frequency domain.
  • the SCI may further include a field of Modulation and coding scheme. This field is configured to indicate the modulation and coding scheme of the sidelink data transmitted in the sidelink.
  • the first terminal 12 encodes and modulates the sidelink data to be sent by using the modulation and coding scheme, and the second terminal 13 uses the modulation and coding scheme to demodulate and decode the received sidelink data.
  • step S308 the second terminal 13 monitors configured PSCCHs, receives its PSCCH (s) in multiple sidelink sub-channels and decodes SCI from the received PSCCH (s) .
  • the second terminal 13 demodulates each PSCCH per sidelink sub-channel and attempts to decode SCI individually.
  • the second terminal 13 combines PSCCH (s) incrementally across sidelink sub-channels and attempts to decode combined SCI.
  • the end-to-end data transmission method of the embodiment of the disclosure aims to solve the previously described problem of transmitting power mismatch between PSCCH and PSSCH transmissions and at the same time allowing low latency transmission for large data TB size messages.
  • Other benefits from adopting the above-mentioned transmission structure include: to improve reliability for PSCCH reception by combining at the receiving terminal the repeated control channel transmissions; no additional receiver complexity in decoding control channel information; and allowing flexible UE implementation of control channel reception and decoding of PSCCH, as it is entirely up to the receiving terminal to perform combining of PSCCH before decoding.
  • FIG. 5 schematically illustrates a flowchart of an end-to-end data transmission method according to another embodiment of the present disclosure. The method may be applied, for example, to the first terminal 12 in FIG. 1.
  • the method 40 comprises:
  • Step S402 the first terminal 12 encodes SCI as per sidelink sub-channel size and modulates the encoded SCI.
  • the first terminal 12 After the first terminal 12 receives or determines the PSSCH resource and PSCCH resource, it encodes SCI as per sidelink sub-channel size and modulates the encoded SCI.
  • a sidelink sub-channel may occupy one or multiple slot (s) in time domain, or may occupy one or multiple OFDM symbol (s) , but the present disclosure is not limited to the examples described herein.
  • Step S404 the first terminal 12 maps the modulated SCI onto PSCCH.
  • the SCI format may include a field of frequency domain resource assignment and a field of time domain resource assignment.
  • the fields of frequency domain resource assignment and time domain resource assignment are configured to indicate, respectively, the frequency resource and the time resource in the sidelink allocated to the first terminal 12 for the sidelink transmission.
  • the SCI format may include a field of sub-channel block assignment to indicate the time-frequency domain resource in the sidelink.
  • the field of NR sub-channel assignment is configured to indicate the sub-channel block in the sidelink for the sidelink transmission or reception or reception.
  • a sub-channel block may be defined as a preset number of consecutive OFDM symbols in the time domain and a preset number of consecutive subcarriers in the frequency domain.
  • the SCI may further include a field of Modulation and coding scheme. This field is configured to indicate the modulation and coding scheme of the sidelink data transmitted in the sidelink.
  • the first terminal 12 encodes and modulates the sidelink data to be sent by using the modulation and coding scheme, and the second terminal 13 uses the modulation and coding scheme to demodulate and decode the received sidelink data.
  • Step S406 when plurality of frequency domain sidelink sub-channels are used for transmitting a PSSCH, the first terminal 12 transmits the PSCCH repeatedly in the same multiple sidelink sub-channels that are used for carrying the PSSCH corresponding to the PSCCH.
  • the first terminal 12 also transmits the sidelink data in the multiple sidelink sub-channels to the second terminal 13.
  • the end-to-end data transmission method of the embodiment of the disclosure aims to solve the previously described problem of transmitting power mismatch between PSCCH and PSSCH transmissions and at the same time allowing low latency transmission for large data TB size messages.
  • Other benefits from adopting the above-mentioned transmission structure include: to improve reliability for PSCCH reception by combining at the receiving terminal the repeated control channel transmissions; no additional receiver complexity in decoding control channel information; and allowing flexible UE implementation of control channel reception and decoding of PSCCH, as it is entirely up to the receiving terminal to perform combining of PSCCH before decoding.
  • FIG. 6 schematically illustrates a flowchart of an end-to-end data transmission method according to another embodiment of the present disclosure. The method may be applied, for example, to the second terminal 13 in FIG. 1.
  • the method 50 comprises:
  • Step S502 the second terminal 13 monitors configured PSCCHs.
  • the second terminal 13 may receive the configured PSCCHs for sidelink reception from the network device 11, for example, by RRC message.
  • Step S504 the second terminal 13 receives its PSCCH (s) in multiple sidelink sub-channels and decodes SCI from the received PSCCH (s) .
  • the second terminal 13 demodulates each PSCCH per sidelink sub-channel and attempts to decode SCI individually.
  • the second terminal 13 combines PSCCH (s) incrementally across sidelink sub-channels and attempts to decode combined SCI.
  • the second terminal 13 shall receive and decode the sidelink data from the sidelink sub-channels on PSSCH indicated by the SCI.
  • the end-to-end data transmission method of the embodiment of the disclosure aims to solve the previously described problem of transmitting power mismatch between PSCCH and PSSCH transmissions and at the same time allowing low latency transmission for large data TB size messages.
  • Other benefits from adopting the above-mentioned transmission structure include: to improve reliability for PSCCH reception by combining at the receiving terminal the repeated control channel transmissions; no additional receiver complexity in decoding control channel information; and allowing flexible UE implementation of control channel reception and decoding of PSCCH, as it is entirely up to the receiving terminal to perform combining of PSCCH before decoding.
  • FIG. 7 schematically illustrates a terminal according to an embodiment of the present disclosure.
  • the terminal may be the first terminal 12 in FIG. 1.
  • the terminal 60 comprises: an encoding unit 602, a modulating unit 604, a mapping unit 606 and a transmitting unit 608.
  • the encoding unit 602 is configured to encode a SCI as per sidelink sub-channel size.
  • the modulating unit 604 is configured to modulate the encoded SCI.
  • the mapping unit 606 is configured to map the modulated SCI onto a PSCCH.
  • the transmitting unit 608 is configured to transmit the PSCCH repeatedly in the same multiple sidelink sub-channels that are used for carrying the PSSCH corresponding to the PSCCH, when multiple frequency domain sidelink sub-channels are used for transmitting a PSSCH.
  • multiple sidelink sub-channels in the frequency domain are consecutive.
  • the encoding unit 602, the modulating unit 604 and the mapping unit 606 may be implemented by a processor (e.g. the processor 1102 in FIG. 11)
  • the transmitting unit 608 may be implemented by a transmitter (e.g. the transmitter 1106 in FIG. 11) .
  • FIG. 11 schematically illustrates a terminal device according to an embodiment of the present disclosure.
  • a terminal device 110 may include a processor 1102, a receiver 1104, a transmitter 1106 and a memory 1108, wherein the memory 1108 may be configured to store a code executed by the processor 1102 an the like.
  • Each component in the terminal device 110 is coupled together through a bus system 1110, wherein the bus system 1010 includes a data bus, and further includes a power bus, a control bus and a state signal bus.
  • the bus system 1010 includes a data bus, and further includes a power bus, a control bus and a state signal bus.
  • the terminal 60 illustrated in FIG. 7 and the terminal device 110 illustrated in FIG. 11 may implement each process implanted by the first terminal 12 in the abovementioned method embodiments and will not be elaborated herein to avoid repetitions.
  • the processor 1102 typically controls overall operations of the terminal device 110, such as the operations associated with display, data communications and recording operations.
  • the processor 1102 may include one or more processors to execute codes in the memory 1108.
  • the processor 1102 implements the method performed by the first terminal device 12 in the method embodiment, which will not be repeated here for brevity.
  • the processor 1102 may include one or more modules which facilitate the interaction between the processor 1102 and other components.
  • the memory 1108 is configured to store various types of data to support the operation of the terminal device 110. Examples of such data include instructions for any applications or methods operated on the terminal device 110, contact data, phonebook data, messages, pictures, video, etc.
  • the memory 1008 may be implemented using any type of volatile or non-volatile memory devices, or a combination thereof, such as a static random access memory (SRAM) , an electrically erasable programmable read-only memory (EEPROM) , an erasable programmable read-only memory (EPROM) , a programmable read-only memory (PROM) , a read-only memory (ROM) , a magnetic memory, a flash memory or a magnetic or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable programmable read-only memory
  • PROM programmable read-only memory
  • ROM read-only memory
  • magnetic memory a magnetic memory
  • flash memory or a
  • the receiver 1104 is configured to receive an electromagnetic signal received by the antenna.
  • the main function of the receiver is to select the frequency components it needs from the numerous electromagnetic waves existing in the air, suppress or filter out unwanted signals or noise and interference signals, and then obtain the original useful information after amplification and demodulation.
  • the transmitter 1106 is configured to generate and modulate the RF current and transmit the radio waves through the antenna.
  • the transmitter 1106 and receiver 1104 may be implemented as a transceiver.
  • FIG. 8 schematically illustrates a terminal according to another embodiment of the present disclosure.
  • the terminal may be the first terminal 12 in FIG. 1.
  • the terminal 70 comprises: an encoding unit 702, a modulating unit 704, a mapping unit 706, a transmitting unit 708 and a receiving unit 710.
  • the encoding unit 702 is configured to encode a SCI as per sidelink sub-channel size.
  • the modulating unit 704 is configured to modulate the encoded SCI.
  • the mapping unit 706 is configured to map the modulated SCI onto a PSCCH.
  • the transmitting unit 708 is configured to transmit the PSCCH repeatedly in the same multiple sidelink sub-channels that are used for carrying the PSSCH corresponding to the PSCCH, when multiple frequency domain sidelink sub-channels are used for transmitting a PSSCH.
  • the receiving unit 710 is configured to receive information of the sidelink sub-channels.
  • the sidelink sub-channels in the frequency domain are consecutive.
  • the encoding unit 702, the modulating unit 704 and the mapping unit 706 may be implemented by a processor (e.g. the processor 1102 in FIG. 11)
  • the transmitting unit 708 may be implemented by a transmitter (e.g. the transmitter 1106 in FIG. 11)
  • the receiving unit 710 may be implemented by a receiver (e.g. the receiver 1104 in FIG. 11) .
  • the terminal 70 illustrated in FIG. 8 and the terminal device 110 illustrated in FIG. 11 may implement each process implanted by the first terminal 12 in the abovementioned method embodiments and will not be elaborated herein to avoid repetitions.
  • FIG. 9 schematically illustrates a terminal according to another embodiment of the present disclosure.
  • the terminal may be the first terminal 12 in FIG. 1.
  • the terminal 80 comprises: an encoding unit 802, a modulating unit 804, a mapping unit 806, a transmitting unit 808, a receiving unit 810 and a determining unit 812.
  • the encoding unit 802 is configured to encode a SCI as per sidelink sub-channel size.
  • the modulating unit 804 is configured to modulate the encoded SCI.
  • the mapping unit 806 is configured to map the modulated SCI onto a PSCCH.
  • the transmitting unit 808 is configured to transmit the PSCCH repeatedly in the same multiple sidelink sub-channels that are used for carrying the PSSCH corresponding to the PSCCH, when multiple frequency domain sidelink sub-channels are used for transmitting a PSSCH.
  • the receiving unit 810 is configured to receive a sidelink resource pool for sidelink transmission.
  • the determining unit 812 is configured to determine the multiple sidelink sub-channels according to the resources of PSSCH and PSCCH in the sidelink resource pool.
  • the sidelink sub-channels in the frequency domain are consecutive.
  • the encoding unit 802, the modulating unit 804, the mapping unit 806, and the determining unit 810 may be implemented by a processor (e.g. the processor 1102 in FIG. 11)
  • the transmitting unit 808 may be implemented by a transmitter (e.g. the transmitter 1106 in FIG. 11)
  • the receiving unit 812 may be implemented by a receiver (e.g. the receiver 1104 in FIG. 11) .
  • the terminal 80 illustrated in FIG. 9 and the terminal device 110 illustrated in FIG. 11 may implement each process implanted by the first terminal 12 in the abovementioned method embodiments and will not be elaborated herein to avoid repetitions.
  • FIG. 10 schematically illustrates a terminal according to another embodiment of the present disclosure.
  • the terminal may be the second terminal 13 in FIG. 2.
  • the terminal 90 comprises: a receiving unit 902 and a decoding unit 904.
  • the receiving unit 902 is configured to monitor configured PSCCHs and receive its PSCCHs in multiple sidelink sub-channels.
  • the decoding unit 904 is configured to decode SCI from the received PSCCHs.
  • the decoding unit 904 is further configured to demodulate each PSCCH per sidelink sub-channel and decode the SCI individually.
  • the decoding unit 904 is further configured to combine the received PSCCHs incrementally across sidelink sub-channels and decode the combined SCI.
  • the receiving unit 902 may be implemented by a receiver (e.g. the receiver 1204 in FIG. 12) and the decoding unit 904 may be implemented by a processor (e.g. the processor 1202 in FIG. 12) .
  • FIG. 12 schematically illustrates a terminal device according to another embodiment of the present disclosure.
  • a terminal device 120 may include a processor 1202, a receiver 1204, a transmitter 1206 and a memory 1208, wherein the memory 1208 may be configured to store a code executed by the processor 1202 an the like.
  • Each component in the terminal device 120 is coupled together through a bus system 1210, wherein the bus system 1210 includes a data bus, and further includes a power bus, a control bus and a state signal bus.
  • the bus system 1210 includes a data bus, and further includes a power bus, a control bus and a state signal bus.
  • the processor 1202 typically controls overall operations of the terminal device 120, such as the operations associated with display, data communications and recording operations.
  • the processor 1202 may include one or more processors to execute codes in the memory 1208.
  • the processor 1202 implements the method performed by the second terminal device 13 in the method embodiment, which will not be repeated here for brevity.
  • the processor 1202 may include one or more modules which facilitate the interaction between the processor 1202 and other components.
  • the memory 1208 is configured to store various types of data to support the operation of the terminal device 120. Examples of such data include instructions for any applications or methods operated on the terminal device 120, contact data, phonebook data, messages, pictures, video, etc.
  • the memory 1008 may be implemented using any type of volatile or non-volatile memory devices, or a combination thereof, such as a static random access memory (SRAM) , an electrically erasable programmable read-only memory (EEPROM) , an erasable programmable read-only memory (EPROM) , a programmable read-only memory (PROM) , a read-only memory (ROM) , a magnetic memory, a flash memory or a magnetic or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable programmable read-only memory
  • PROM programmable read-only memory
  • ROM read-only memory
  • magnetic memory a magnetic memory
  • flash memory or a
  • the receiver 1204 is configured to receive an electromagnetic signal received by the antenna.
  • the main function of the receiver is to select the frequency components it needs from the numerous electromagnetic waves existing in the air, suppress or filter out unwanted signals or noise and interference signals, and then obtain the original useful information after amplification and demodulation.
  • the transmitter 1206 is configured to generate and modulate the RF current and transmit the radio waves through the antenna.
  • the transmitter 1206 and receiver 1204 may be implemented as a transceiver.
  • the terminal 90 illustrated in FIG. 10 and the terminal device 120 illustrated in FIG. 12 may implement each process implanted by the second terminal 13 in the abovementioned method embodiments and will not be elaborated herein to avoid repetitions.

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

Abstract

Selon des modes de réalisation, la présente invention concerne un dispositif et un procédé de transmission de données de bout en bout. Le procédé consiste : à coder des informations de commande de liaison latérale (SCI) en tant que taille de sous-canal de liaison latérale et à moduler les SCI codées (S402), à mapper les SCI modulées sur un canal de commande de liaison latérale physique (PSCCH) (S404), et à transmettre le PSCCH de manière répétée dans les mêmes sous-canaux de liaison latérale qui sont utilisés pour transporter le canal partagé de liaison latérale physique (PSSCH) correspondant au PSCCH, lorsque des sous-canaux de liaison latérale de domaine de fréquence sont utilisés pour transmettre un PSSCH (S406).
PCT/CN2019/114825 2018-11-01 2019-10-31 Dispositif et procédé de transmission de données de bout en bout Ceased WO2020088609A1 (fr)

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