WO2017049934A1 - Procédé d'appel unique dans une communication dmo et terminal - Google Patents

Procédé d'appel unique dans une communication dmo et terminal Download PDF

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Publication number
WO2017049934A1
WO2017049934A1 PCT/CN2016/083173 CN2016083173W WO2017049934A1 WO 2017049934 A1 WO2017049934 A1 WO 2017049934A1 CN 2016083173 W CN2016083173 W CN 2016083173W WO 2017049934 A1 WO2017049934 A1 WO 2017049934A1
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WIPO (PCT)
Prior art keywords
called
calling
response message
data packet
message
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PCT/CN2016/083173
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English (en)
Chinese (zh)
Inventor
鲁志兵
胡军
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海能达通信股份有限公司
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Publication of WO2017049934A1 publication Critical patent/WO2017049934A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1809—Selective-repeat protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/08—Trunked mobile radio systems

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a single call method and terminal in DMO communication.
  • the Direct Mode Operation (DMO) technology refers to a technology for direct communication between terminals without cellular network coverage.
  • D2D device-to-device
  • 3GPP 3rd Generation Partnership Project
  • UE User Equipment
  • the inventors of the present invention have found that in the standard 3GPP R12 D2D communication technology protocol, it is impossible to know whether the transmitted data is successfully received between two communication UEs, and it is impossible to determine whether retransmission is required, so the DMO communication is lowered. The quality of data transmission does not support single call well.
  • Embodiments of the present invention provide a single call method and a terminal in DMO communication, which are used to improve the quality of data transmission in DMO communication.
  • the present invention provides a single call method in a pass-through mode DMO communication, including:
  • the called user equipment UE establishes DMO communication with the calling UE;
  • the called UE receives the first data packet sent by the calling UE;
  • the called UE sends a response message to the calling UE, and the response message includes an ACK or NACK message.
  • the ACK message is used to indicate that the calling UE sends the second data packet
  • the NACK message is used to indicate that the calling UE retransmits the first data packet.
  • the method further includes: the called UE determines the target channel, and the target channel is used to carry the response.
  • the message includes that the target channel includes a physical side link control channel (PSCCH) or a physical side link shared channel (PSSCH).
  • PSCCH physical side link control channel
  • PSSCH physical side link shared channel
  • the called UE sends a response message to the calling UE.
  • the called UE sends a response message to the calling UE through the target channel.
  • the target UE determines that the target channel that sends the response message to the calling UE includes: the called UE determines to send by using the PSCCH Whether the time of the data is earlier than the time when the data is transmitted through the PSSCH, if it is earlier, the PSCCH is determined to be the target channel, and if it is later than, the PSSCH is determined to be the target channel.
  • the called UE is to the calling UE Sending the response message includes: the called UE acquires N time slots that send a response message to the calling UE within the preset time T, where N is greater than 2; the called UE occupies one of the N time slots to the calling UE Send a reply message.
  • an embodiment of the present invention provides a single call method in a direct mode DMO communication, including:
  • the calling user equipment UE establishes DMO communication with the called UE;
  • the calling UE receives the response message sent by the called UE, and the response message includes an ACK or NACK message;
  • the calling UE sends the second data packet to the called UE;
  • the calling UE retransmits the first data packet to the called UE.
  • the receiving, by the calling UE, the response message sent by the called UE includes: the calling UE receiving the response sent by the called UE by using the physical side link control channel PSCCH Message.
  • the receiving, by the calling UE, the response message sent by the called UE includes: the calling UE receiving the called UE to share the channel through the physical side link A response message sent by the PSSCH.
  • an embodiment of the present invention provides a terminal in a direct mode DMO communication, including:
  • a receiving module configured to receive a first data packet sent by the calling UE
  • a sending module configured to send a response message to the calling UE, where the response message includes an ACK or a NACK message, where the ACK message is used to indicate that the called UE sends the second data packet, and the NACK message is used to indicate that the called UE retransmits the first data packet.
  • the terminal further includes:
  • a determining module configured to determine a target channel, where the target channel is used to carry a response message, the target channel includes a physical side link control channel (PSCCH) or a physical side link shared channel (PSSCH), and a sending module is specifically configured to use the target channel to the calling UE. Send a reply message.
  • PSCCH physical side link control channel
  • PSSCH physical side link shared channel
  • the determining module includes: a determining unit, configured to determine whether a time for transmitting data by using the PSCCH is earlier than sending data by using the PSSCH a determining unit configured to determine, when the determining unit determines that the time of transmitting data through the PSCCH is earlier than the time when the data is transmitted through the PSSCH, the PSCCH is the target channel, and when the determining unit determines that the data is transmitted through the PSCCH, the data is sent later than the data through the PSSCH.
  • the PSSCH is determined to be the target channel.
  • the sending module includes: acquiring the unit And for acquiring N time slots for sending a response message to the calling UE within the preset time T, where N is greater than 2; the sending unit is configured to use one of the N time slots to send a response message to the calling UE. .
  • an embodiment of the present invention provides a terminal in a direct mode DMO communication, including:
  • a sending module configured to send the first data packet to the called UE
  • a receiving module configured to receive a response message sent by the called UE, where the response message includes an ACK or a NACK message;
  • the sending module is further configured to: when the response message received by the receiving module is an ACK message, send the second data packet to the called UE;
  • the sending module is further configured to: when the response message received by the receiving module is a NACK message, resend the first data packet to the called UE.
  • the receiving module is configured to receive a response message sent by the called UE by using the physical side link control channel PSCCH.
  • the receiving module is configured to receive a response message sent by the called UE by using the physical side link shared channel (PSSCH).
  • PSSCH physical side link shared channel
  • an embodiment of the present invention provides a terminal in a direct mode DMO communication, where the terminal includes:
  • Receiver transmitter, processor, and memory
  • the processor is configured to establish DMO communication with the calling user equipment UE.
  • a receiver configured to receive a first data packet sent by the calling UE
  • a transmitter configured to send a response message to the calling UE, where the response message includes an ACK or a NACK message, where the ACK message is used to indicate that the called UE sends the second data packet, and the NACK message is used to indicate that the called UE retransmits the first data packet.
  • an embodiment of the present invention provides a terminal in a direct mode DMO communication, where the terminal includes:
  • Receiver transmitter, processor, and memory
  • the processor is configured to establish DMO communication with the called user equipment UE.
  • a transmitter configured to send the first data packet to the called UE
  • a receiver configured to receive a response message sent by the called UE, where the response message includes an ACK or a NACK message;
  • the transmitter is further configured to: when the response message received by the receiving module is an ACK message, send the second data packet to the called UE;
  • the transmitter is further configured to: when the response message received by the receiving module is a NACK message, resend the first data packet to the called UE.
  • the called UE establishes DMO communication with the calling UE, and the called UE receives the main message.
  • the first data packet sent by the UE is sent, and then the called UE sends a response message to the calling UE.
  • the response message includes an ACK or a NACK message, where the ACK message indicates that the first data packet received by the called UE is correct, indicating the called UE.
  • Sending a second data packet the NACK message indicates that the first data packet received by the called UE is incorrect, and indicates that the called UE retransmits the first data packet. Therefore, through the ACK/NACK mechanism, the two DMO communication UEs can know whether the transmitted data is correctly received, and if not correctly received, retransmit the unsuccessfully transmitted message, thereby improving the DMO communication.
  • the quality of data transmission is possible.
  • FIG. 1 is a flow chart of a single call method in DMO communication according to an embodiment of the present invention
  • FIG. 2 is another flow chart of a single call method in DMO communication according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a functional module of a terminal in DMO communication according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of another functional module of a terminal in DMO communication according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of hardware of a terminal in DMO communication according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another hardware structure of a terminal in DMO communication according to an embodiment of the present invention.
  • Embodiments of the present invention provide a single call method and a terminal in DMO communication, which are used to improve the quality of data transmission in DMO communication. The details are described below separately.
  • a single call method in DMO communication in the embodiment of the present invention includes:
  • the called UE establishes DMO communication with the calling UE.
  • the direct mode communication can be established.
  • the specific time to establish the DMO communication is that the time-frequency domain resources can be pre-configured by the upper layer or randomly selected by the user. .
  • the establishment of the DMO communication may be initiated by one of the calling UE and the called UE, and the specific manner of establishing the DMO communication is the prior art, which is not described in detail herein.
  • the called UE receives the first data packet sent by the calling UE.
  • the called UE After the DMO communication is established, after the calling UE sends the first data packet to the called UE, the called UE receives the first data packet sent by the calling UE, and the first data packet may be user data information or control information.
  • the physical side link control channel PSCCH
  • PSCCH physical side link control channel
  • PSSCH physical side link shared channel
  • the called UE sends a response message to the calling UE.
  • the called UE After receiving the first data packet sent by the calling UE, the called UE performs error detection on the first data packet, and if the receiving is correct, returns an acknowledgement ACK (Acknowledgement) message to the calling UE to notify the calling UE. And continuing to send the second data packet; if the error detection finds that the received first data packet is incorrect, sending a negative acknowledgement NACK (negative acknowledge) message to the calling UE to notify the calling UE to resend the first data packet.
  • ACK Acknowledgement
  • NACK negative acknowledge
  • the called UE establishes DMO communication with the calling UE, and the called UE receives the first data packet sent by the calling UE, and then the called UE sends a response message to the calling UE, and the response message includes ACK or NACK.
  • the message where the ACK message indicates that the first data packet received by the called UE is correct, indicating that the called UE sends the second data packet, and the NACK message indicates that the first data packet received by the called UE is incorrect, indicating that the called UE retransmits The first packet. Therefore, through the ACK/NACK mechanism, the two DMO communication UEs can know whether the transmitted data is correctly received, and if not correctly received, retransmit the unsuccessfully transmitted message, thereby improving the DMO communication. The quality of data transmission.
  • the ACK or NACK message returned by the called UE to the calling UE may be fed back through the PSCCH or the PSSCH.
  • the feedback When the feedback is performed through the PSCCH, it is sent through a certain domain in the PSCCH, for example, the 11-bit highest bit occupied by the TA domain of the PSCCH is redefined as ACK and NACK, or a domain is added for feedback ACK and NACK.
  • the called UE selects PSCCH or PSSCH to carry an ACK or NACK message by sending data time priority, as follows:
  • the called UE determines whether the time when the data is transmitted through the PSCCH is earlier than the time when the data is transmitted through the PSSCH. If it is earlier, the PSCCH is determined to be the target channel carrying the ACK or NACK message, and if it is later, the PSSCH is determined to be the bearer ACK or NACK message. Target channel.
  • each node in order to prevent missed ACK/NACK reception timing, if each node knows each other's transmission resource table configuration based on the class routing protocol, it may receive on the specified time-frequency resource to improve efficiency.
  • the specific resource configuration requirements are:
  • Time Division Duplexing (TDD) system cannot transmit and receive at the same time slot, if two UEs transmit at the same time, they cannot receive each other's information.
  • the ACK/NACK will not be successfully received, so it must be staggered in resource configuration.
  • each UE has at least 2 transmission opportunities within time T, and it cannot happen that the two UEs in the time T are all in the same transmitter.
  • Time slot When the number of users is large, multiple users can be placed in each time slot to ensure that the users are evenly distributed within the time T, thereby ensuring timely feedback of the ACK/NACK.
  • the time domain resource configuration may be pre-configured by the upper layer, or the time domain resource may be randomly selected by the calling UE and the called UE. After the time domain resource is allocated to the called UE according to the resource configuration requirement, the called UE acquires Sending N timeslots of ACK/NACK to the calling UE within the preset time T, N is greater than 2 (ie, at least 2 time slots), and the called UE reoccupies one of the N time slots to the calling party. The UE sends an ACK/NACK.
  • the time domain resources allocated to UE1 are 2ms and 50ms, and the 2ms is simultaneously allocated to UE2. Therefore, when UE1 has a resource conflict between 2ms and UE2, it can continue to resend at 50ms, so it must be guaranteed at 100ms.
  • UE1 can occupy one idle time slot to send an ACK/NACK message.
  • the above is an introduction to the single-call method in the DMO communication from the called UE side that transmits the ACK/NACK message, and the single-call method in the DMO communication is introduced from the calling UE side that receives the ACK/NACK message.
  • a single call method in DMO communication in the embodiment of the present invention includes:
  • the calling UE establishes DMO communication with the called UE.
  • the direct mode communication can be established.
  • the specific time to establish the DMO communication is that the time-frequency domain resources can be pre-configured by the upper layer or randomly selected by the user. .
  • the establishment of the DMO communication may be initiated by one of the calling UE and the called UE, and the specific manner of establishing the DMO communication is the prior art, which is not described in detail herein.
  • the first data packet sent by the calling UE to the called UE.
  • the calling UE sends the first data packet to the called UE, and the first data packet may be user data information or control information. Specifically, it may be sent through the physical side link control channel PSCCH or through the physical side link shared channel PSSCH.
  • the calling UE receives the response message sent by the called UE.
  • the called UE After the calling UE sends the first data packet to the called UE, the called UE receives the first data packet sent by the calling UE, and then performs error detection on the first data packet, and if the receiving is correct, returns to the calling UE.
  • the acknowledgement ACK message is acknowledged; if the error detection finds that the received first data packet is incorrect, a negative acknowledgement NACK message is sent to the calling UE.
  • the calling UE sends the second data packet to the called UE.
  • the calling UE If the calling UE receives the ACK message returned by the called UE, the calling UE sends the second data packet to the called UE.
  • the calling UE retransmits the first data packet to the called UE.
  • the calling UE If the calling UE receives the NACK message returned by the called UE, the calling UE calls to the called party. The UE resends the first data packet.
  • the calling UE establishes DMO communication with the called UE, and the calling UE sends the first data packet to the called UE, and then the calling UE receives the ACK or NACK response message sent by the called UE, if yes, The ACK message indicates that the first data packet received by the called UE is correct, the calling UE continues to send the second data packet, and if it is a NACK message, it indicates that the first data packet received by the called UE is incorrect, and the calling UE Resend the first packet. Therefore, through the ACK/NACK mechanism, the two DMO communication UEs can know whether the transmitted data is correctly received, and if not correctly received, retransmit the unsuccessfully transmitted message, thereby improving the DMO communication. The quality of data transmission.
  • the ACK or NACK message sent by the called UE received by the calling UE may be carried by using PSCCH or PSSCH.
  • the ACK/NACK may be sent on a certain domain in the PSCCH, for example, redefining the highest bit of 11 bits occupied by the TA domain of the PSCCH into ACK and NACK, or Adding a field is dedicated to feedback ACK and NACK.
  • the calling UE When the calling UE receives an ACK or NACK message through the PSSCH, the ACK/NACK can be punctured and placed in the PSSCH for feedback.
  • the above is a description of the single-call method in the DMO communication in the embodiment of the present invention.
  • the terminal in the implementation of the present invention is introduced from the perspective of a functional module.
  • the terminal 3 in the embodiment of the present invention includes:
  • Establishing a communication module 301 configured to establish DMO communication with the calling user equipment UE;
  • the receiving module 302 is configured to receive a first data packet sent by the calling UE.
  • the sending module 303 is configured to send a response message to the calling UE, where the response message includes an ACK or a NACK message, where the ACK message is used to indicate that the called UE sends the second data packet, and the NACK message is used to indicate that the called UE retransmits the first data. package.
  • the establishing communication module 301 establishes DMO communication with the calling UE, and the receiving module 302 receives the first data packet sent by the calling UE, and then the sending module 303 sends the first data packet to the calling UE.
  • the response message, the response message includes an ACK or a NACK message, where the ACK message indicates that the first data packet received by the called UE is correct, indicating that the called UE sends the second data packet, and the NACK message indicates the first data packet received by the called UE. Incorrect, indicating that the called UE retransmits the first data packet. Therefore, through the ACK/NACK mechanism, the two DMO communication UEs can know whether the transmitted data is correctly received, and if not correctly received, retransmit the unsuccessfully transmitted message, thereby improving the DMO communication. The quality of data transmission.
  • the terminal 3 further includes:
  • a determining module configured to determine a target channel, where the target channel is used to carry an ACK/NACK message, and the target channel includes a physical side link control channel PSCCH or a physical side link shared channel PSSCH;
  • the sending module is specifically configured to send a response message to the calling UE through the target channel. ;
  • the determining module includes:
  • a determining unit configured to determine whether a time at which data is transmitted through the PSCCH is earlier than a time at which data is transmitted through the PSSCH;
  • a determining unit configured to determine that the PSCCH is the target channel when the determining unit determines that the time for transmitting data through the PSCCH is earlier than the time when the data is transmitted through the PSSCH, and when the determining unit determines that the time for transmitting data through the PSCCH is later than the time for transmitting data through the PSSCH, Then the PSSCH is determined to be the target channel.
  • the sending module 303 includes:
  • An acquiring unit configured to acquire N time slots for sending a response message to the calling UE within the preset time T, where N is greater than 2;
  • a sending unit configured to occupy one of the N time slots to send a response message to the calling UE.
  • the terminal 4 in the embodiment of the present invention includes:
  • Establishing a communication module 401 configured to establish DMO communication with the called user equipment UE;
  • the sending module 402 is configured to send the first data packet to the called UE.
  • the receiving module 403 is configured to receive a response message sent by the called UE, where the response message includes an ACK or a NACK message;
  • the sending module 402 is further configured to: when the response message received by the receiving module is an ACK message, send the second data packet to the called UE;
  • the sending module 402 is further configured to: when the response message received by the receiving module is a NACK message, retransmit the first data packet to the called UE.
  • the establishing communication module 401 of the terminal 4 establishes DMO communication with the called UE, and the sending module 402 sends the first data packet to the called UE, and then the receiving module 403 receives the ACK or NACK response sent by the called UE.
  • the message if it is an ACK message, indicates that the first data packet received by the called UE is correct, the sending module 402 continues to send the second data packet, and if it is a NACK message, it indicates that the first data packet received by the called UE is incorrect.
  • the sending module 402 resends the first data packet. Therefore, through the ACK/NACK mechanism, the two DMO communication UEs can know whether the transmitted data is correctly received, and if not correctly received, retransmit the unsuccessfully transmitted message, thereby improving the DMO communication. The quality of data transmission.
  • the receiving module 403 is specifically configured to receive an ACK or NACK message that is sent by the called UE through the physical side link control channel PSCCH.
  • the receiving module 403 is specifically configured to receive an ACK or NACK message that is sent by the called UE through the physical side link shared channel PSSCH.
  • the terminal is introduced from the perspective of function modularization.
  • the terminal in the embodiment of the present invention is introduced from the perspective of hardware processing.
  • FIG. 5 is another schematic structural diagram of the terminal 5 according to the embodiment of the present invention.
  • Terminal 5 may include at least one network interface or other communication interface, at least one receiver 501, at least one transmitter 502, at least one processor 503, and memory 504 to enable connection communication between these devices through at least one network interface (
  • the communication connection between the system gateway and at least one other network element can be implemented by wired or wireless.
  • the memory 504 can include read only memory and random access memory, and provides instructions and data to the processor 503.
  • a portion of the memory 504 can also include, possibly including, a high speed random access memory (RAM), and possibly a non- Un-volatile memory.
  • RAM high speed random access memory
  • Memory 504 stores the following elements, executable modules or data structures, or subsets thereof, or their extended sets:
  • Operation instructions include various operation instructions for implementing various operations.
  • Operating system Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.
  • the processor 503 performs the following operations by calling an operation instruction stored in the memory 504, which can be stored in the operating system:
  • the response message includes an ACK or NACK message, where the ACK message is used
  • the called UE is sent to send a second data packet, and the NACK message is used to indicate that the called UE retransmits the first data packet.
  • the processor 503 can perform the following steps:
  • the target channel is used for carrying a response message, and the target channel includes a physical side link control channel PSCCH or a physical side link shared channel PSSCH; and the transmitter 502 is called to send a response message to the calling UE through the target channel.
  • the target channel includes a physical side link control channel PSCCH or a physical side link shared channel PSSCH; and the transmitter 502 is called to send a response message to the calling UE through the target channel.
  • the processor 503 can perform the following steps:
  • the processor 503 can perform the following steps:
  • N is greater than 2; the transmitter 502 occupies one of the N time slots to send an ACK/NACK response message to the calling UE.
  • the processor 503 establishes DMO communication with the calling UE, and the receiver 501 receives the first data packet sent by the calling UE. Then, the transmitter 501 sends a response message to the calling UE, and the response message includes an ACK or a NACK.
  • the message where the ACK message indicates that the first data packet received by the called UE is correct, indicating that the called UE sends the second data packet, and the NACK message indicates that the first data packet received by the called UE is incorrect, indicating that the called UE retransmits The first packet. Therefore, through the ACK/NACK mechanism, the two DMO communication UEs can know whether the transmitted data is correctly received, and if not correctly received, retransmit the unsuccessfully transmitted message, thereby Increased the quality of data transmission in DMO communications.
  • FIG. 6 is another schematic structural diagram of the terminal 6 according to the embodiment of the present invention.
  • Terminal 6 may include at least one network interface or other communication interface, at least one receiver 601, at least one transmitter 602, at least one processor 603, and memory 604 to enable connection communication between these devices through at least one network interface ( The communication connection between the system gateway and at least one other network element can be implemented by wired or wireless.
  • Memory 604 can include read only memory and random access memory, and provides instructions and data to processor 603, which can also include portions of high speed RAM, and possibly non-stable memory.
  • the memory 604 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:
  • Operation instructions include various operation instructions for implementing various operations.
  • Operating system Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.
  • the processor 603 performs the following operations by calling an operation instruction stored in the memory 604 (the operation instruction can be stored in the operating system):
  • the receiver 601 can also perform the following steps:
  • the receiver 601 can also perform the following steps:
  • the processor 603 establishes DMO communication with the called UE, and the first data packet sent by the transmitter 602 to the called UE, and then the receiver 601 receives the ACK or NACK response message sent by the called UE, if it is an ACK.
  • the message indicates that the first data packet received by the called UE is correct, the transmitter 602 continues to send the second data packet, and if it is a NACK message, it indicates the called UE.
  • the received first data packet is incorrect, and the transmitter 602 retransmits the first data packet. Therefore, through the ACK/NACK mechanism, the two DMO communication UEs can know whether the transmitted data is correctly received, and if not correctly received, retransmit the unsuccessfully transmitted message, thereby improving the DMO communication.
  • the quality of data transmission is possible to be used to the two DMO communication UE.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention 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 a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM, Read-Only) Memory, random access memory (RAM), disk or optical disk, and other media that can store program code.

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  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

L'invention concerne un procédé d'appel unique dans une communication DMO et un terminal, que l'on utilise dans l'amélioration de la qualité de transmission des données d'un appel unique dans une communication DMO. Le procédé selon les modes de réalisation de la présente invention comprend les étapes suivantes : un UE appelé établit une connexion de communication DMO avec un UE appelant; l'UE appelé reçoit un premier paquet de données envoyé par l'UE appelant; l'UE appelé envoie un message de réponse à l'UE appelant, le message de réponse comprenant un message ACK ou NACK, le message ACK indique que le premier paquet de données reçu par l'UE appelé est correct et ordonne à l'UE appelé d'envoyer un deuxième paquet de données, tandis que le message NACK indique que le premier paquet de données reçu par l'appelé n'est pas correct et ordonne à l'UE appelé d'envoyer à nouveau le premier paquet de données. Par conséquent, au moyen d'un mécanisme ACK/NACK, deux UE dans une communication DMO peuvent apprendre si les données envoyés sont correctement reçues, et si les données ne sont pas correctement reçues, les données qui ne sont pas transmises avec succès sont retransmises, ce qui permet d'améliorer la qualité de la transmission de données d'un appel unique dans une communication DMO.
PCT/CN2016/083173 2015-09-21 2016-05-24 Procédé d'appel unique dans une communication dmo et terminal WO2017049934A1 (fr)

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CN110381599B (zh) 2018-04-13 2021-05-25 维沃移动通信有限公司 Sidelink的传输方法和终端
CN111800244A (zh) * 2019-04-01 2020-10-20 英特尔公司 Nr-v2x的物理侧链路反馈信道的设计

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