WO2020206618A1 - 直连通信的反馈信息传输方法、装置、设备及系统 - Google Patents

直连通信的反馈信息传输方法、装置、设备及系统 Download PDF

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Publication number
WO2020206618A1
WO2020206618A1 PCT/CN2019/081967 CN2019081967W WO2020206618A1 WO 2020206618 A1 WO2020206618 A1 WO 2020206618A1 CN 2019081967 W CN2019081967 W CN 2019081967W WO 2020206618 A1 WO2020206618 A1 WO 2020206618A1
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WIPO (PCT)
Prior art keywords
terminal
feedback information
time interval
retransmission
harq feedback
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PCT/CN2019/081967
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English (en)
French (fr)
Inventor
赵群
Original Assignee
北京小米移动软件有限公司
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Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN201980000624.4A priority Critical patent/CN110169094B/zh
Priority to PCT/CN2019/081967 priority patent/WO2020206618A1/zh
Priority to EP19923863.5A priority patent/EP3955604A4/en
Priority to US17/601,391 priority patent/US11973599B2/en
Publication of WO2020206618A1 publication Critical patent/WO2020206618A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1858Transmission or retransmission of more than one copy of acknowledgement message
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1854Scheduling and prioritising arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1861Physical mapping arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/189Transmission or retransmission of more than one copy of a message
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/40Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/16Interfaces between hierarchically similar devices
    • H04W92/18Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a method, device, equipment and system for transmitting feedback information of direct communication.
  • vehicle-mounted devices and other devices can communicate directly through sidelinks.
  • the Internet of Vehicles technology supports blind retransmission mechanism and HARQ (Hybrid Automatic Repeat Request) feedback retransmission mechanism.
  • the blind retransmission mechanism means that the second terminal repeatedly transmits direct data to the first terminal when the HARQ feedback information sent by the first terminal is not received. In this way, even if the first terminal does not receive the HARQ feedback information due to half-duplex, Receiving the direct data transmitted for the first time (that is, the first terminal sends the direct data on the time-frequency resource for sending the data), the first terminal can also receive the direct data repeatedly transmitted to ensure reliable data transmission Sex.
  • the HARQ feedback retransmission mechanism means that after the first terminal determines that the second terminal sends the direct data, it sends HARQ feedback information to the second terminal according to whether the direct data is correctly received, and the second terminal determines whether to retransmit according to the HARQ feedback information. Pass the direct data.
  • the time interval between the time when the direct data is retransmitted for the last time and the time when the HARQ feedback information is transmitted can be pre-configured.
  • the second terminal uses the blind retransmission mechanism to send the direct data to the first terminal for the last time.
  • the first terminal may determine the time for transmitting the HARQ feedback information according to the time interval, and then transmit the HARQ feedback information to the second terminal.
  • the HARQ feedback transmission of the two directly connected data will also collide.
  • the present disclosure provides a method, device, equipment and system for transmitting feedback information of direct connection communication, which are used to solve the problem of the HARQ feedback transmission of the two direct connection data when the last blind retransmission of two direct connection data collides. There will also be collision problems.
  • a feedback information transmission method of direct communication including:
  • the first terminal After the first terminal determines that the second terminal uses the first blind retransmission mechanism to send direct data to the first terminal for the last time, the first terminal transmits the hybrid automatic repeat request HARQ feedback information to the second terminal, The HARQ feedback information is used to indicate the receiving state of the direct data after the blind retransmission ends;
  • the first terminal retransmits the HARQ feedback information to the second terminal by using a second blind retransmission mechanism.
  • the first terminal uses the second blind retransmission mechanism to retransmit the HARQ feedback information to the second terminal, including:
  • the first terminal retransmits the HARQ feedback information to the second terminal according to the first retransmission time interval.
  • the first terminal determining the first retransmission time interval includes:
  • the first terminal acquires the first resource location where the HARQ feedback information is transmitted to the second terminal for the first time, and determines the first retransmission time interval according to the first resource location, where different first The resource location corresponds to a different first retransmission time interval; or,
  • the first terminal obtains the second resource location where the HARQ feedback information was last transmitted to the second terminal, and determines the first retransmission time interval according to the second resource location, wherein a different second resource The positions correspond to different first retransmission time intervals.
  • the determining the first retransmission time interval according to the first resource location includes:
  • the first terminal searches for the first retransmission time interval corresponding to the acquired first resource location in the first correspondence.
  • the determining the first retransmission time interval according to the second resource location includes:
  • the first terminal searches for the first retransmission time interval corresponding to the acquired second resource location in the second correspondence.
  • the first terminal determining the first retransmission time interval includes:
  • the first terminal determines the second retransmission time interval as the first retransmission time interval.
  • the first terminal to retransmit the HARQ feedback information to the second terminal according to the first retransmission time interval includes:
  • a resource set used to retransmit the HARQ feedback information according to the first retransmission time interval the resource set including at least one of a time resource, a frequency resource, and a code resource
  • the first terminal uses resources in the target resource subset in the at least two orthogonal resource subsets to retransmit the HARQ feedback information to the second terminal according to the number of retransmissions, where different times The retransmissions correspond to different target resource subsets.
  • the HARQ feedback information is the first HARQ feedback information
  • the method further includes:
  • the first terminal determines to transmit the first HARQ feedback information to the second terminal according to the configuration information; or, the first terminal determines to receive the second HARQ feedback information transmitted by the third terminal according to the configuration information , Wherein the time resources for transmitting the first HARQ feedback information and for transmitting the second HARQ feedback information are the same.
  • a feedback information transmission method for direct communication including:
  • the second terminal After sending the direct data to the first terminal for the last time using the first blind retransmission mechanism, the second terminal receives the HARQ feedback information of the hybrid automatic repeat request transmitted by the first terminal, and the HARQ feedback information is used to indicate the The receiving state of the direct data after the blind retransmission ends;
  • the second terminal receives the HARQ feedback information retransmitted by the first terminal using a second blind retransmission mechanism.
  • the receiving, by the second terminal, the HARQ feedback information retransmitted by the first terminal using the second blind retransmission mechanism includes:
  • the second terminal receives the HARQ feedback information retransmitted by the first terminal according to the first retransmission time interval.
  • the second terminal determining the first retransmission time interval includes:
  • the second terminal obtains the first resource location where the HARQ feedback information transmitted by the first terminal is received for the first time, and determines the first retransmission time interval according to the first resource location, where different first A resource location corresponds to a different first retransmission time interval; or,
  • the second terminal obtains the second resource location where the HARQ feedback information transmitted by the first terminal was received last time, and determines the first retransmission time interval according to the second resource location, where a different second The resource locations correspond to different first retransmission time intervals.
  • the determining the first retransmission time interval according to the first resource location includes:
  • the second terminal searches for the first retransmission time interval corresponding to the acquired first resource location in the first correspondence.
  • the determining the first retransmission time interval according to the second resource location includes:
  • the second terminal searches for the first retransmission time interval corresponding to the acquired second resource location in the second correspondence.
  • the second terminal determining the first retransmission time interval includes:
  • the second terminal determines the second retransmission time interval as the first retransmission time interval.
  • the receiving, by the second terminal, the HARQ feedback information retransmitted by the first terminal according to the first retransmission time interval includes:
  • a resource set used to retransmit the HARQ feedback information according to the first retransmission time interval the resource set including at least one of a time resource, a frequency resource, and a code resource
  • the second terminal uses resources in the target resource subset in the at least two orthogonal resource subsets to receive the HARQ feedback information retransmitted by the first terminal according to the number of retransmissions, where different The number of retransmissions corresponds to different target resource subsets.
  • a feedback information transmission device for direct communication including:
  • the transmission module is configured to transmit the hybrid automatic repeat request HARQ feedback information to the second terminal after determining that the second terminal sends the direct data to the first terminal for the last time using the first blind retransmission mechanism, and the HARQ feedback
  • the information is used to indicate the receiving state of the direct data after the blind retransmission ends;
  • the retransmission module is configured to retransmit the HARQ feedback information to the second terminal using a second blind retransmission mechanism.
  • the retransmission module is further configured to:
  • the retransmission module is further configured to:
  • the retransmission module is further configured to:
  • the retransmission module is further configured to:
  • the retransmission module is further configured to:
  • the second retransmission time interval is determined as the first retransmission time interval.
  • the retransmission module is further configured to:
  • the resource includes at least one of a time resource, a frequency resource, and a code resource;
  • the HARQ feedback information is retransmitted to the second terminal using resources in the target resource subset in the at least two orthogonal resource subsets, where different times of retransmission correspond to Different target resource subsets.
  • the HARQ feedback information is first HARQ feedback information
  • the apparatus further includes:
  • the obtaining module is configured to obtain configuration information
  • the determining module is configured to determine to transmit the first HARQ feedback information to the second terminal according to the configuration information; or determine to receive the second HARQ feedback information transmitted by the third terminal according to the configuration information, where the transmission
  • the first HARQ feedback information and the time resource for transmitting the second HARQ feedback information are the same.
  • a feedback information transmission device for direct communication including:
  • the receiving module is configured to receive the HARQ feedback information of the hybrid automatic repeat request transmitted by the first terminal after the first blind retransmission mechanism sends the direct data to the first terminal for the last time, and the HARQ feedback information is used for Indicating the receiving state of the direct data after the blind retransmission ends;
  • the receiving module is further configured to receive the HARQ feedback information retransmitted by the first terminal using a second blind retransmission mechanism.
  • the receiving module is further configured to:
  • the receiving module is further configured to:
  • the receiving module is further configured to:
  • the receiving module is further configured to:
  • the receiving module is further configured to:
  • the second retransmission time interval is determined as the first retransmission time interval.
  • the receiving module is further configured to:
  • the resource set including at least one of a time resource, a frequency resource, and a code resource
  • the resources in the target resource subset in the at least two orthogonal resource subsets are used to receive the HARQ feedback information retransmitted by the first terminal, wherein different times of retransmission correspond to For different target resource sub-collections.
  • a first terminal including:
  • a memory for storing processor executable instructions
  • the processor is configured to:
  • the hybrid automatic repeat request HARQ feedback information is transmitted to the second terminal, and the HARQ feedback information is used to indicate the The receiving state of the direct data after the blind retransmission ends;
  • a second terminal including:
  • a memory for storing processor executable instructions
  • the processor is configured to:
  • the HARQ feedback information of the hybrid automatic repeat request transmitted by the first terminal is received, and the HARQ feedback information is used to indicate the direct connection.
  • the receiving state of even data after the blind retransmission ends;
  • a feedback information transmission system for direct communication including a first terminal and a second terminal;
  • the first terminal includes the data transmission device according to the third aspect
  • the second terminal includes the data transmission device according to the fourth aspect.
  • a feedback information transmission system for direct communication including a first terminal and a second terminal;
  • the first terminal is the first terminal described in the fifth aspect
  • the second terminal is the second terminal described in the sixth aspect.
  • a computer-readable storage medium stores at least one instruction, at least one program, code set, or instruction set, the at least one instruction, the at least one The program, the code set or the instruction set is loaded and executed by the processor to implement the feedback information transmission method of direct communication as described in the first aspect or the second aspect.
  • the first terminal After the first terminal determines that the second terminal uses the first blind retransmission mechanism to send direct data to the first terminal for the last time, the first terminal transmits HARQ feedback information to the second terminal to indicate the direct connection through the HARQ feedback information The receiving state of the data after the blind retransmission ends.
  • the first terminal needs to retransmit the HARQ feedback information to the second terminal through the second blind retransmission mechanism, so that even if the second terminal does not receive the HARQ feedback information
  • the HARQ feedback information transmitted at a certain time can also receive the retransmitted HARQ feedback information, which can prevent the second terminal from mistakenly thinking that the first terminal did not receive the direct data, and re-transmit the first terminal through the first blind retransmission mechanism.
  • FIG. 1 is a schematic diagram of a network architecture to which various embodiments of the present disclosure are applicable.
  • Fig. 2 is a flow chart of a method for transmitting feedback information in direct communication in the related art.
  • Fig. 3 is a flow chart of a method for transmitting feedback information of direct communication in the related art.
  • Fig. 4 is a flow chart showing a method for transmitting feedback information in direct communication according to an exemplary embodiment.
  • Fig. 5 is a flow chart showing a method for transmitting feedback information in direct communication according to another exemplary embodiment.
  • Fig. 6 is a schematic diagram showing feedback information transmission in direct communication according to another exemplary embodiment.
  • Fig. 7 is a schematic diagram showing feedback information transmission of direct communication according to another exemplary embodiment.
  • Fig. 8 is a schematic diagram showing a resource division according to another exemplary embodiment.
  • Fig. 9 is a block diagram showing a device for transmitting feedback information in direct communication according to an exemplary embodiment.
  • Fig. 10 is a block diagram showing a device for transmitting feedback information in direct communication according to an exemplary embodiment.
  • Fig. 11 is a block diagram showing a device for transmitting feedback information in direct communication according to an exemplary embodiment.
  • Fig. 12 is a block diagram showing a device for transmitting feedback information of direct communication according to an exemplary embodiment.
  • Fig. 1 shows a schematic diagram of a network architecture to which an embodiment of the present disclosure may be applicable.
  • the network architecture may be a network architecture of a C-V2X system.
  • C refers to cellular (English: Cellular)
  • the C-V2X system is a vehicle-mounted wireless communication system based on the evolution of cellular network communication systems such as 3G, 4G, or 5G.
  • the network architecture may include: a core network 11, an access network 12, and a terminal 13.
  • the core network 11 includes several core network equipment.
  • the function of the core network equipment is mainly to provide user connections, manage users, and complete the bearing of services, as the bearer network to provide an interface to the external network.
  • the core network of the LTE (Long Term Evolution) system may include MME (Mobility Management Entity, mobility management node), S-GW (Serving Gateway), and P-GW (PDN Gateway, PDN gateway). And other equipment.
  • the core network of the 5G NR (New Radio) system may include AMF (Access and Mobility Management Function, access and mobility management function) entities, UPF (User Plane Function, user plane function) entities, and SMF (Session Management Function) entities. Function, session management function) entity and other equipment.
  • the access network 12 includes several access network devices 120.
  • the access network device 120 and the core network device 110 communicate with each other through a certain interface technology, such as the S1 interface in the LTE system, and the NG interface in the 5G NR system.
  • the access network device 120 may be a BS (Base Station, base station), which is a device deployed in the access network 12 to provide the terminal 13 with a wireless communication function.
  • the base station may include various forms of macro base stations, micro base stations, relay stations, access points, and so on.
  • the names of devices with base station functions may be different. For example, in LTE systems, they are called eNodeB or eNB; in 5G NR systems, they are called gNodeB or gNB.
  • the name "base station” may change.
  • the above-mentioned devices for providing wireless communication functions for the terminal 13 are collectively referred to as the access network device 120.
  • the terminal 13 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of UE (User Equipment), MS (Mobile Station, mobile station), terminal (terminal device) and so on.
  • UE User Equipment
  • MS Mobile Station, mobile station
  • terminal terminal device
  • the access network device 120 and the terminal 13 communicate with each other through a certain air interface technology, such as a Uu interface.
  • the terminal 13 includes: a vehicle 131, other vehicles 132, infrastructure 133, and pedestrians 134.
  • Vehicle to Vehicle refers to the communication between the vehicle 131 and other vehicles 132.
  • the own vehicle sends its own related information to the other vehicle.
  • the related information includes driving speed, geographic location, driving direction and driving Status, etc.
  • V2I Vehicle to Infrastructure refers to the communication between the vehicle 131 and the infrastructure 133.
  • the infrastructure 133 includes all the infrastructure encountered during the driving of the vehicle, including traffic lights, bus stops, buildings, tunnels and other buildings facility.
  • Vehicle to Pedestrian refers to the communication between the vehicle 131 and the pedestrian 134.
  • Pedestrian generally refers to electronic devices with mobile communication capabilities carried by pedestrians, such as mobile phones and wearable devices.
  • wearable devices include smart bracelets, smart watches, and smart rings.
  • the vehicle 131 is referred to as the first terminal, and the other vehicles 132, infrastructure 133, and pedestrians 134 are referred to as the second terminal for illustration, but the two can also exchange roles, which is not limited. .
  • the first terminal and the second terminal are both terminals that support direct communication
  • the communication system may be an NR system and a subsequent evolution system.
  • the V2X direct communication in LTE can only support some basic security V2X applications, such as the exchange of basic security messages (BSM-Basic Safety Message) such as CAM (Cooperative Awareness Messages) or DENM (Decentralized Environmental Notification Message).
  • BSM-Basic Safety Message basic security messages
  • CAM Cooperative Awareness Messages
  • DENM Decentralized Environmental Notification Message
  • the 3GPP SA1 Service Requirement
  • the 3GPP SA1 Service Requirement working group has established some new V2x communication business requirements that need to be met, including fleet management (Vehicles Platooning), extended sensors, advanced driving (Advanced Driving), and remote driving (remote driving) ).
  • fleet management Vehicle Platooning
  • Advanced Driving Advanced Driving
  • remote driving remote driving
  • NR V2X direct communication needs to provide a higher communication rate, shorter communication delay, and more reliable communication quality.
  • the terminal 13 in the aforementioned network architecture may be a half-duplex communication module or a full-duplex communication mode.
  • Half-duplex means that due to the existence of transmission and reception interference, the terminal cannot send and receive direct data at the same time at the same time.
  • the terminal may have multiple services at the same time, some services need to send directly connected data, and some services need to receive directly connected data. If a terminal sends direct data on a certain time resource, then the terminal cannot receive direct data sent by other terminals on the same time resource, even if the transmitted direct data and the received direct data occupy the frequency domain Orthogonal resources do not work.
  • Full duplex means that the terminal can send and receive direct data at the same time on the resource at the same time.
  • RAN1 Radio Access Network
  • the physical layer HARQ feedback retransmission mechanism and in order to solve the half-duplex problem, it supports a blind re-transmission mechanism (blind re-transmission) of directly connected data that does not rely on feedback.
  • the blind retransmission mechanism refers to the second terminal repeatedly transmitting direct data to the first terminal when the HARQ feedback information sent by the first terminal is not received, so that even if the first terminal does not receive the HARQ feedback information due to half-duplex
  • the first terminal may also receive the direct data repeatedly transmitted to ensure the reliability of data transmission.
  • the first transmission of direct data or HARQ feedback information is called a transmission process
  • the second and subsequent transmissions of direct data or HARQ feedback information are called a blind retransmission process.
  • the HARQ feedback retransmission mechanism means that after the second terminal sends direct data to the first terminal, the first terminal sends HARQ feedback information to the second terminal according to whether the direct data is correctly received, and the second terminal determines according to the HARQ feedback information Whether to retransmit the direct data.
  • RAN1 decided to support the setting of the time interval between HARQ feedback information transmission and direct data transmission through pre-configuration or system configuration.
  • both the second terminal and the first terminal use the HARQ feedback retransmission mechanism and the blind retransmission mechanism at the same time, then after the first terminal determines that the second terminal uses the blind retransmission mechanism to transmit the direct data for the last time, according to the direct data Whether it is received correctly and transmits HARQ-ACK (i.e. HARQ feedback information) to the second terminal; the second terminal decides whether to perform HARQ retransmission according to HARQ-ACK (i.e. whether to retransmit direct data to the first terminal through blind retransmission mechanism) ).
  • HARQ-ACK i.e. HARQ feedback information
  • the first terminal transmits to the second terminal in the mth time unit.
  • Transmission of HARQ feedback information where nm is a pre-configured or system-configured value. Among them, n and m are positive integers.
  • the white box in FIG. 2 represents the directly connected data
  • the vertical shaded box represents the HARQ feedback information.
  • a time resource dedicated to transmitting HARQ feedback information can also be configured, and this embodiment does not limit the number and positions of symbols included in the time resource. In a possible implementation manner, this embodiment takes the time resource as the second and third symbols from the bottom of the time slot as an example for description.
  • the time resource is represented by a gray box.
  • the time interval configured for each direct communication is the same.
  • the direct communication mentioned here refers to the communication that sends directly connected data between different terminals.
  • the first terminal sending direct data to the second terminal is called a direct communication
  • the second terminal sends direct data to the third terminal. This is called a direct communication. If the last blind retransmission of two direct-connected communications collides due to half-duplex, the HARQ feedback transmissions of the two direct-connected communications will also collide.
  • the second terminal transmits the first continuous data to the first terminal in the n-2th and nth slots, respectively, and the first terminal is in the first
  • the second direct connection data is transmitted to the third terminal in n-1 and n time slots.
  • the first terminal needs to receive the first continuous data transmitted by the second terminal in the n-2th and nth time slots, respectively, in the n-1th and nth time slots.
  • the second direct connection data is transmitted internally to the third terminal.
  • the first terminal can receive the first continuous data; in the nth time slot, due to half-duplex reasons, the first terminal can send the second direct data, Unable to receive the first continuous data. Since both the first direct data and the second direct data are transmitted in the nth time slot, and nm is a preset value, in the mth time slot, the first terminal needs to send to the second terminal.
  • the first HARQ feedback information for the first direct connection data also needs to receive the second HARQ feedback information for the second direct connection data sent by the third terminal. Due to half-duplex reasons, the first terminal either cannot send the first HARQ feedback information or cannot receive the second HARQ feedback information.
  • the first continuous data is represented by a white frame
  • the second direct data is represented by a black frame
  • the first HARQ feedback information is represented by a vertical shaded frame
  • the horizontal The shaded box of the line represents the second HARQ feedback information.
  • the first terminal can transmit HARQ feedback information to the second terminal through a blind retransmission mechanism. In this way, even if the second terminal does not receive the HARQ feedback information due to half-duplex, it can still receive the retransmitted information. HARQ feedback information, thereby improving the reliability of transmitting HARQ feedback information.
  • Fig. 4 is a flow chart showing a method for transmitting feedback information of direct communication according to an exemplary embodiment.
  • the method for transmitting feedback information of direct communication is applied to the network architecture shown in Fig. 1, as shown in Fig. 4
  • the feedback information transmission method of direct communication includes the following steps.
  • step 401 after the first terminal determines that the second terminal sends the direct data to the first terminal for the last time using the first blind retransmission mechanism, the first terminal transmits HARQ feedback information to the second terminal.
  • the direct data is physical layer data sent by the second terminal to the first terminal through the direct link.
  • the HARQ feedback information is used to indicate the receiving state of the direct data after the blind retransmission ends.
  • the HARQ feedback information may be used to indicate that the first terminal has correctly received the direct data sent by the second terminal, or the HARQ feedback information may be used to indicate that the first terminal has not correctly received the direct data sent by the second terminal.
  • the first blind retransmission mechanism is a blind retransmission mechanism set up for directly connected data, which can specify the number of retransmissions of directly connected data, the time interval between each transmission, and other information.
  • step 402 the second terminal receives the HARQ feedback information transmitted by the first terminal.
  • the second terminal may not receive the HARQ feedback information due to half-duplex. Therefore, in order to ensure the reliability of transmitting the HARQ feedback information, the first terminal may also blindly retransmit the HARQ feedback information, that is, step 403 is performed.
  • step 403 the first terminal retransmits the HARQ feedback information to the second terminal using the second blind retransmission mechanism.
  • the second blind retransmission mechanism is a blind retransmission mechanism set for HARQ feedback information, which can specify the number of retransmissions of HARQ feedback information, the time interval between each transmission, and other information.
  • the second blind retransmission mechanism may be the same as the first blind retransmission mechanism, or may be different from the first blind retransmission mechanism, which is not limited in this embodiment.
  • step 404 the second terminal receives the HARQ feedback information retransmitted by the first terminal using the second blind retransmission mechanism.
  • steps 401 and 403 can be implemented separately as an embodiment on the first terminal side, and steps 402 and 404 can be implemented separately as an embodiment on the second terminal side.
  • the feedback information transmission method for direct communication provided by the present disclosure, after the first terminal determines that the second terminal sends the direct data to the first terminal for the last time using the first blind retransmission mechanism, the first terminal will The second terminal transmits HARQ feedback information to indicate the receiving state of the direct data after the blind retransmission ends through the HARQ feedback information.
  • the first terminal needs to retransmit the HARQ feedback information to the second terminal through the second blind retransmission mechanism, so that even if the second terminal does not receive the HARQ feedback information
  • the HARQ feedback information transmitted at a certain time can also receive the retransmitted HARQ feedback information, which can prevent the second terminal from mistakenly thinking that the first terminal did not receive the direct data, and re-transmit the first terminal through the first blind retransmission mechanism.
  • Fig. 5 is a flow chart showing a method for transmitting feedback information of direct communication according to another exemplary embodiment.
  • the method for transmitting feedback information of direct communication is applied to the network architecture shown in Fig. 1, as shown in Fig. 5
  • the feedback information transmission method of direct communication includes the following steps.
  • step 501 after the first terminal determines that the second terminal sends direct data to the first terminal for the last time using the first blind retransmission mechanism, the first terminal transmits HARQ feedback information to the second terminal.
  • the direct data is physical layer data sent by the second terminal to the first terminal through the direct link.
  • the HARQ feedback information is used to indicate the receiving state of the direct data after the blind retransmission ends.
  • the HARQ feedback information may be used to indicate that the first terminal has correctly received the direct data sent by the second terminal, or the HARQ feedback information may be used to indicate that the first terminal has not correctly received the direct data sent by the second terminal.
  • the first blind retransmission mechanism is a blind retransmission mechanism set up for directly connected data, which can specify the number of retransmissions of directly connected data, the time interval between each transmission, and other information.
  • the first terminal can obtain the time interval between the transmission of the HARQ feedback information and the transmission of the direct data, which is preconfigured or configured by the system, and then The time resource for transmitting the HARQ feedback information is determined according to the time resource of the last transmission of the direct data and the time interval, and the HARQ feedback information is transmitted to the second terminal on the time resource.
  • the time resource for the last direct data transmission is the nth time slot
  • the pre-configured or system configured time interval is nm
  • the first terminal can determine that the time resource for transmitting HARQ feedback information is the mth time slot. Timeslots, the HARQ feedback information is transmitted to the second terminal on the mth timeslot.
  • step 502 the second terminal receives HARQ feedback information transmitted by the first terminal.
  • the second terminal can obtain the time interval between the transmission of the pre-configured or system-configured HARQ feedback information and the transmission of the direct data, and then determine the time resource for transmitting the HARQ feedback information according to the time resource of the last transmission of the direct data and the time interval , Receiving HARQ feedback information transmitted by the first terminal on the time resource.
  • the second terminal If the second terminal is in the half-duplex communication mode and the first terminal transmits HARQ feedback information to the second terminal, the second terminal is transmitting HARQ feedback information to the third terminal, then the second terminal may not be able to receive the first terminal transmission Therefore, the first terminal needs to use the second blind retransmission mechanism to retransmit the HARQ feedback information to the second terminal to improve the reliability of transmitting HARQ feedback information, so as to prevent the second terminal from mistakenly thinking that the first terminal has no
  • the direct connection data is received and the direct connection data is sent to the first terminal again using the first blind retransmission mechanism, thereby wasting network resources and achieving the effect of saving network resources.
  • the second blind retransmission mechanism is a blind retransmission mechanism set for HARQ feedback information, which can specify the number of retransmissions of HARQ feedback information, the time interval between each transmission, and other information.
  • the second blind retransmission mechanism may be the same as the first blind retransmission mechanism, or may be different from the first blind retransmission mechanism, which is not limited in this embodiment.
  • the implementation of the first terminal to retransmit the HARQ feedback information to the second terminal using the second blind retransmission mechanism will be described below.
  • the first terminal determines a first retransmission time interval, where the first retransmission time interval is used to indicate the time interval between two adjacent transmissions of HARQ feedback information.
  • the first retransmission time interval includes the time interval between the first retransmission of the HARQ feedback information and the first transmission of the HARQ feedback information, and the time interval between different retransmissions of the HARQ feedback information.
  • the first terminal may determine the first retransmission time interval.
  • a different first retransmission time interval may be set for each direct communication, or the first retransmission time interval may be determined according to the resource for transmitting HARQ feedback information, etc., which is not limited in this embodiment.
  • the following describes three implementation manners for determining the first retransmission time interval according to the resource for transmitting HARQ feedback information.
  • the first terminal acquires the first resource location for transmitting HARQ feedback information to the second terminal for the first time; the first terminal determines the first retransmission time interval according to the first resource location, where different first A resource location corresponds to a different first retransmission time interval.
  • the first resource location mentioned here is the location of the first resource, and the first resource is one of time resources, frequency resources, and code resources.
  • the implementation process will be introduced below by taking the first resource as the first frequency resource as an example.
  • the first terminal transmits HARQ feedback information to the second terminal for the first time on a certain time resource, it also needs to receive the HARQ feedback information transmitted by the third terminal on that time resource, then the two HARQ feedback information occupies The first frequency resource must be different. Therefore, the first retransmission time interval can be determined according to the position of the first frequency resource for transmitting the HARQ feedback information, and different first frequency resource positions can be specified to correspond to different first retransmission time intervals. In this way, the retransmission can be guaranteed.
  • the two HARQ feedback information will not occupy the same time resources, thereby avoiding the possibility of time domain overlap when the two HARQ feedback information is retransmitted.
  • the position of the first frequency resource mentioned here may be the start position of the first frequency resource and/or the end position of the first frequency resource.
  • the first terminal determines the first retransmission time interval according to the first resource location.
  • the input parameter can be set as the first resource location
  • the output parameter can be the formula of the first retransmission time interval, or the first between different first resource locations and different first retransmission time intervals can be set.
  • Correspondence, etc. are not limited in this embodiment.
  • the first terminal determines the first retransmission time interval according to the first resource location, including: the first terminal obtains the first correspondence, and the first correspondence is used for Indicate the relationship between the first resource location and the first retransmission time interval; the first terminal searches for the first retransmission time interval corresponding to the acquired first resource location in the first correspondence.
  • the first corresponding relationship may be pre-configured or system-configured.
  • the pre-configured correspondence relationship means that the access network device configures the first correspondence relationship to the first terminal, and the access network device may generate configuration information including the first correspondence relationship in advance, and send the configuration information to the first terminal.
  • the configuration information sent by the access network device can be received, and the first correspondence relationship can be read from the configuration information.
  • the system configuration correspondence refers to a first correspondence predefined in the communication protocol. At this time, the first terminal can directly read the first correspondence.
  • the first terminal may search for the corresponding first retransmission time interval in the first correspondence based on the acquired first resource location.
  • the first terminal transmits HARQ feedback information to the second terminal for the first time in the m-th time slot, it also needs to be in the m-th time slot. After receiving the HARQ feedback information transmitted by the third terminal, the first frequency resources occupied by the two HARQ feedback information must be different.
  • the first resource location used for transmitting HARQ feedback information to the second terminal corresponds to the first retransmission time interval of 2 time slots
  • the first resource location used for receiving HARQ feedback information transmitted by the third terminal The resource location corresponds to the first retransmission time interval of 4 time slots
  • the first terminal can transmit HARQ feedback information to the second terminal in the m+2 time slot, and receive the third terminal in the m+4 time slot.
  • the first retransmission time interval found in the first correspondence is also fixed, that is, each retransmission The time interval for transmitting HARQ feedback information is the same.
  • the first terminal obtains the second resource location where the HARQ feedback information was last transmitted to the second terminal; the first terminal determines the first retransmission time interval according to the second resource location, where a different second The resource locations correspond to different first retransmission time intervals.
  • the difference between the second implementation and the first implementation is that the second resource location acquired in the second implementation is the second resource location where HARQ feedback information was most recently transmitted to the second terminal instead of the first time.
  • the first terminal determines the first retransmission time interval according to the second resource location.
  • the input parameter can be set as the second resource location
  • the output parameter can be the formula of the first retransmission time interval, or the second between a different second resource location and a different first retransmission time interval can be set Correspondence, etc., are not limited in this embodiment.
  • the first terminal determines the first retransmission time interval according to the second resource location, including: the first terminal obtains the second correspondence, and the second correspondence is used for Indicate the relationship between the second resource location and the first retransmission time interval; the first terminal searches for the first retransmission time interval corresponding to the acquired second resource location in the second correspondence.
  • the first terminal determines the first retransmission time interval according to the second resource location, including: the first terminal obtains the second correspondence, and the second correspondence is used for Indicate the relationship between the second resource location and the first retransmission time interval; the first terminal searches for the first retransmission time interval corresponding to the acquired second resource location in the second correspondence.
  • the first terminal obtains the second retransmission time interval, and the second retransmission time interval is used to indicate the time interval between two adjacent transmissions of directly connected data;
  • the retransmission time interval is determined as the first retransmission time interval.
  • the second terminal will collide with the direct data transmission from the first terminal to the third terminal every time the second terminal transmits the direct data to the third terminal, then it may be that the above terminal has a transmission or reception problem, and there is no need to transmit HARQ feedback.
  • Information If at least one time the second terminal transmits the direct data to the first terminal does not collide with the first terminal to transmit the direct data to the third terminal, then the time interval for the second terminal to transmit the direct data to the first terminal is the same as that of the first terminal. The time interval for transmitting the direct data to the third terminal must be different. Therefore, the first retransmission time interval can be determined according to the second retransmission time interval for transmitting the direct data. In this way, it can be guaranteed that the two HARQ feedback information will not collide every time when the two HARQ feedback information is retransmitted.
  • each first retransmission time interval is equal.
  • the first retransmission time interval may be calculated according to each second retransmission time interval. For example, all second retransmission time intervals can be averaged, and the obtained average value can be used as the first retransmission time interval. Alternatively, the middle value of all second retransmission time intervals may be used as the first retransmission time interval. Alternatively, the second retransmission time interval with different retransmission times may be used as the first retransmission time interval corresponding to the retransmission times.
  • the second retransmission time interval between the first and second direct data retransmissions is 1 time slot
  • the second retransmission time interval between the second and third direct data retransmissions Is 2 time slots
  • the first retransmission time interval between the first and second HARQ feedback information retransmissions is 1 time slot
  • the first retransmission time interval between the second and third HARQ feedback information retransmissions is 2 time slots.
  • the second retransmission time interval when the second terminal retransmits the direct data to the first terminal is 2 time slots, and the second retransmission time when the first terminal retransmits the direct data to the third terminal
  • the interval is 1 time slot. If the first terminal transmits HARQ feedback information to the second terminal for the first time in the m-th time slot, it also needs to receive the HARQ feedback information transmitted by the third terminal in the m-th time slot. Then the first terminal may transmit HARQ feedback information to the second terminal in the m+1th time slot, and receive the HARQ feedback information transmitted by the third terminal in the m+2th time slot.
  • step 504 the first terminal retransmits the HARQ feedback information to the second terminal according to the first retransmission time interval.
  • the first terminal may determine the resource set used to retransmit the HARQ feedback information according to the resource set used for the first transmission of the HARQ feedback information and the first retransmission time interval, and use the resources in the resource set to retransmit to the second terminal HARQ feedback information.
  • the resource set includes at least one of time resources, frequency resources and code resources.
  • orthogonal retransmissions can also be selected for different times. Resources to ensure that different times of retransmission will not cause collisions.
  • the first terminal retransmits HARQ feedback information to the second terminal according to the first retransmission time interval, including:
  • the first terminal determines a resource set used to retransmit HARQ feedback information according to the first retransmission time interval, and the resource set includes at least one of a time resource, a frequency resource, and a code resource.
  • the first terminal divides the resource set into at least two orthogonal resource subsets.
  • the first terminal may determine the way of dividing the resource set according to the configuration of the access network device, so as to obtain at least two orthogonal resource subsets.
  • Time resources, frequency resources, and code resources are divided in the same manner. The following uses frequency resources as an example to describe resource division.
  • RAN1 has decided to use subchannels as the smallest unit of frequency domain resource allocation, and each subchannel includes multiple PRBs (Physical Resource Block, physical resource blocks).
  • the frequency resource pool in direct communication includes multiple sub-channels, and the frequency resources that can be used for transmitting HARQ feedback information in each sub-channel are divided into multiple orthogonal frequency resource subsets. Please refer to Figure 8.
  • each sub-channel contains 6 PRBs
  • the second to last and the third OFDM (Orthogonal Frequency Division Multiplexing) in each time slot Symbols can be used to transmit HARQ feedback information
  • the first terminal can divide each sub-channel into two orthogonal PRB sets containing different frequency resources (that is, PRB 0, 1, 2 is a PRB set, and PRB 3, 4, 5 are A set of PRBs).
  • PRB 0, 1, 2 is a PRB set
  • PRB 3, 4, 5 are A set of PRBs.
  • the first terminal may use each PRB set as a resource subset.
  • the first terminal may divide the time resources to obtain orthogonal symbol sets, and use each symbol set as a resource subset.
  • the first terminal may divide the code resources to obtain orthogonal code resource sets, and use each code resource set as a resource subset.
  • the first terminal may use a PRB set and a symbol set as a resource subset.
  • the resource set includes frequency resources and code resources
  • the first terminal may use one PRB set and one code resource set as a resource subset.
  • the resource set includes time resources and code resources
  • the first terminal may use a symbol set and a code resource set as a resource subset.
  • the resource set includes frequency resources, time resources, and code resources
  • the first terminal may use a PRB set, a symbol set, and a code resource set as a resource subset.
  • the first terminal uses resources in the target resource subsets in at least two orthogonal resource subsets to retransmit HARQ feedback information to the second terminal according to the number of retransmissions, where different times of retransmission correspond to different The target resource sub-collection.
  • the correspondence between different retransmission times and different target resource subsets can be preconfigured or the system can be configured.
  • the first terminal can select at least two orthogonal resources according to the current retransmission times. Select the target resource subset from the subset, and then use the resources in the target resource subset to retransmit the HARQ feedback information to the second terminal.
  • the target resource sub-collection is a resource sub-collection selected this time.
  • the first terminal selects the resource subset.
  • Set 1 use resource subset 1 as the target resource subset, and use the resources in resource subset 1 to retransmit HARQ feedback information to the second terminal.
  • the following describes the implementation of the second terminal receiving the HARQ feedback information retransmitted by the first terminal using the second blind retransmission mechanism.
  • step 505 the second terminal determines the first retransmission time interval.
  • the second terminal needs to determine the resource location for retransmitting the HARQ feedback information, and receive the HARQ feedback information at the resource location.
  • the second terminal may first determine the first retransmission time interval, and then determine the resource location according to the first retransmission time interval.
  • the implementation manner of determining the first retransmission time interval by the second terminal is the same as the implementation manner of determining the first retransmission time interval by the first terminal, and three implementation manners are described below.
  • the second terminal obtains the first resource location for receiving the HARQ feedback information transmitted by the first terminal for the first time; the second terminal determines the first retransmission time interval according to the first resource location, where different The first resource location corresponds to a different first retransmission time interval.
  • the first resource location mentioned here is the location of the first resource, and the first resource is one of time resources, frequency resources, and code resources.
  • the second terminal determines the first retransmission time interval according to the first resource location.
  • the input parameter can be set as the first resource location
  • the output parameter can be the formula of the first retransmission time interval, or the first between different first resource locations and different first retransmission time intervals can be set.
  • Correspondence, etc. are not limited in this embodiment.
  • the second terminal determines the first retransmission time interval according to the first resource location, including: the second terminal obtains the first correspondence, and the first correspondence is used to indicate The relationship between the first resource location and the first retransmission time interval; the second terminal searches for the first retransmission time interval corresponding to the acquired first resource location in the first correspondence.
  • the second terminal obtains the second resource location where the HARQ feedback information transmitted by the first terminal is most recently received; the second terminal determines the first retransmission time interval according to the second resource location, where different first The two resource positions correspond to different first retransmission time intervals.
  • the second terminal determines the first retransmission time interval according to the second resource location.
  • the input parameter can be set as the second resource location
  • the output parameter can be the formula of the first retransmission time interval, or the second between a different second resource location and a different first retransmission time interval can be set Correspondence, etc., are not limited in this embodiment.
  • the second terminal determines the first retransmission time interval according to the second resource location, including: the second terminal obtains the second correspondence, and the second correspondence is used to indicate The relationship between the second resource location and the first retransmission time interval; the second terminal searches for the first retransmission time interval corresponding to the acquired second resource location in the second correspondence.
  • the second terminal obtains the second retransmission time interval, and the second retransmission time interval is used to indicate the time interval between two adjacent transmissions of directly connected data;
  • the transmission time interval is determined as the first retransmission time interval.
  • step 503 For the implementation details of the above three implementation manners, refer to the description in step 503, which is not repeated here.
  • step 506 the second terminal receives the HARQ feedback information retransmitted by the first terminal according to the first retransmission time interval.
  • the second terminal may determine the resource set used to retransmit the HARQ feedback information according to the resource set used for receiving the HARQ feedback information for the first time and the first retransmission time interval, and use the resources in the resource set to receive the second terminal retransmission HARQ feedback information.
  • the resource set includes at least one of time resources, frequency resources and code resources.
  • the second terminal receiving, according to the first retransmission time interval, the HARQ feedback information retransmitted by the first terminal using the second blind retransmission mechanism includes:
  • the second terminal determines a resource set used to retransmit HARQ feedback information according to the first retransmission time interval, and the resource set includes at least one of time resources, frequency resources, and code resources.
  • the second terminal divides the resource set into at least two orthogonal resource subsets.
  • the second terminal uses resources in the target resource subset in at least two orthogonal resource subsets to receive the HARQ feedback information retransmitted by the first terminal according to the number of retransmissions, where different times of retransmission correspond to Different target resource subsets.
  • step 504 For the implementation details of the foregoing implementation manner, refer to the description in step 504, which is not repeated here.
  • the method may further include: the first terminal obtains configuration information; The second terminal transmits the first HARQ feedback information; or the first terminal determines to receive the second HARQ feedback information transmitted by the third terminal according to the configuration information, where the time resources for transmitting the first HARQ feedback information and transmitting the second HARQ feedback information are the same.
  • the configuration information can be pre-configured or system-configured.
  • the first terminal may decide according to the configuration information whether to preferentially transmit the first HARQ feedback information or to preferentially receive the second HARQ feedback information.
  • steps 501, 503-504 can be implemented separately as an embodiment on the first terminal side, and steps 502, 505-506 can be implemented separately as an embodiment on the second terminal side.
  • the feedback information transmission method for direct communication provided by the present disclosure, after the first terminal determines that the second terminal sends the direct data to the first terminal for the last time using the first blind retransmission mechanism, the first terminal will The second terminal transmits HARQ feedback information to indicate the receiving state of the direct data after the blind retransmission ends through the HARQ feedback information.
  • the first terminal needs to retransmit the HARQ feedback information to the second terminal through the second blind retransmission mechanism, so that even if the second terminal does not receive the HARQ feedback information
  • the HARQ feedback information transmitted at a certain time can also receive the retransmitted HARQ feedback information, which can prevent the second terminal from mistakenly thinking that the first terminal did not receive the direct data, and re-transmit the first terminal through the first blind retransmission mechanism.
  • Fig. 9 is a block diagram showing a feedback information transmission device for direct communication according to an exemplary embodiment.
  • the feedback information transmission device for direct communication is applied to the network architecture shown in Fig. 1, as shown in Fig. 9,
  • the feedback information transmission device for direct communication includes: a transmission module 910 and a retransmission module 920;
  • the transmission module 910 is configured to transmit HARQ feedback information to the second terminal after determining that the second terminal sends the direct data to the first terminal for the last time using the first blind retransmission mechanism, and the HARQ feedback information is used to indicate the direct data The receiving state after the blind retransmission ends;
  • the retransmission module 920 is configured to retransmit the HARQ feedback information to the second terminal using the second blind retransmission mechanism.
  • the first terminal after the first terminal determines that the second terminal sends direct data to the first terminal for the last time using the first blind retransmission mechanism, the first terminal will The second terminal transmits HARQ feedback information to indicate the receiving state of the direct data after the blind retransmission ends through the HARQ feedback information.
  • the first terminal needs to retransmit the HARQ feedback information to the second terminal through the second blind retransmission mechanism, so that even if the second terminal does not receive the HARQ feedback information
  • the HARQ feedback information transmitted at a certain time can also receive the retransmitted HARQ feedback information, which can prevent the second terminal from mistakenly thinking that the first terminal did not receive the direct data, and re-transmit the first terminal through the first blind retransmission mechanism.
  • Fig. 10 is a block diagram showing a feedback information transmission device for direct communication according to an exemplary embodiment.
  • the feedback information transmission device for direct communication is applied to the network architecture shown in Fig. 1, as shown in Fig. 10,
  • the feedback information transmission device of direct communication includes: a transmission module 1010 and a retransmission module 1020;
  • the transmission module 1010 is configured to transmit HARQ feedback information to the second terminal after determining that the second terminal sends direct data to the first terminal for the last time using the first blind retransmission mechanism, and the HARQ feedback information is used to indicate the direct data
  • the receiving state after the blind retransmission ends;
  • the retransmission module 1020 is configured to retransmit the HARQ feedback information to the second terminal using the second blind retransmission mechanism.
  • the retransmission module 1020 is further configured as:
  • the HARQ feedback information is retransmitted to the second terminal according to the first retransmission time interval.
  • the retransmission module 1020 is further configured as:
  • the retransmission module 1020 is further configured as:
  • the retransmission module 1020 is further configured as:
  • the retransmission module 1020 is further configured as:
  • the second retransmission time interval is determined as the first retransmission time interval.
  • the retransmission module 1020 is further configured as:
  • the resource includes at least one of a time resource, a frequency resource, and a code resource;
  • the HARQ feedback information is retransmitted to the second terminal using resources in the target resource subset in at least two orthogonal resource subsets, where different times of retransmission correspond to different target resource subsets .
  • the HARQ feedback information is the first HARQ feedback information
  • the apparatus further includes: an obtaining module 1030 and a determining module 1040;
  • the obtaining module 1030 is configured to obtain configuration information
  • the determining module 1040 is configured to determine to transmit the first HARQ feedback information to the second terminal according to the configuration information; or determine to receive the second HARQ feedback information transmitted by the third terminal according to the configuration information, wherein the first HARQ feedback information and The time resources for transmitting the second HARQ feedback information are the same.
  • the first terminal after the first terminal determines that the second terminal sends direct data to the first terminal for the last time using the first blind retransmission mechanism, the first terminal will The second terminal transmits HARQ feedback information to indicate the receiving state of the direct data after the blind retransmission ends through the HARQ feedback information.
  • the first terminal needs to retransmit the HARQ feedback information to the second terminal through the second blind retransmission mechanism, so that even if the second terminal does not receive the HARQ feedback information
  • the HARQ feedback information transmitted at a certain time can also receive the retransmitted HARQ feedback information, which can prevent the second terminal from mistakenly thinking that the first terminal did not receive the direct data, and re-transmit the first terminal through the first blind retransmission mechanism.
  • Fig. 11 is a block diagram showing a feedback information transmission device for direct communication according to an exemplary embodiment.
  • the feedback information transmission device for direct communication is applied to the network architecture shown in Fig. 1, as shown in Fig. 11,
  • the feedback information transmission device for direct communication includes: a receiving module 1110;
  • the receiving module 1110 is configured to receive the hybrid automatic repeat request HARQ feedback information transmitted by the first terminal after the first blind retransmission mechanism sends the direct data to the first terminal for the last time, and the HARQ feedback information is used to indicate the direct connection.
  • the receiving state of even data after the blind retransmission ends;
  • the receiving module 1110 is also configured to receive HARQ feedback information retransmitted by the first terminal using the second blind retransmission mechanism.
  • the receiving module 1110 is further configured to:
  • the receiving module 1110 is further configured to:
  • the receiving module 1110 is further configured to:
  • the receiving module 1110 is further configured to:
  • the receiving module 1110 is further configured to:
  • the second retransmission time interval is determined as the first retransmission time interval.
  • the receiving module 1110 is further configured to:
  • the resource set including at least one of time resources, frequency resources, and code resources;
  • the resources in the target resource subsets in at least two orthogonal resource subsets are used to receive the HARQ feedback information retransmitted by the first terminal, where different times of retransmissions correspond to different target resource subsets. set.
  • the second terminal after the direct data is sent to the first terminal for the last time through the first blind retransmission mechanism, the second terminal will receive the HARQ feedback transmitted by the first terminal Information to indicate the receiving status of the direct data after the blind retransmission ends through the HARQ feedback information.
  • the first terminal needs to retransmit the HARQ feedback information to the second terminal through the second blind retransmission mechanism, so that even if the second terminal does not receive the HARQ feedback information
  • the HARQ feedback information transmitted at a certain time can also receive the retransmitted HARQ feedback information, which can prevent the second terminal from mistakenly thinking that the first terminal did not receive the direct data, and re-transmit the first terminal through the first blind retransmission mechanism.
  • the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used for illustration. In actual applications, the above functions can be allocated by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • An exemplary embodiment of the present disclosure provides a first terminal capable of implementing the feedback information transmission method of direct communication provided by the present disclosure.
  • the first terminal includes: a processor and a memory for storing the processor executable signaling ;
  • the processor is configured as:
  • the HARQ feedback information is transmitted to the second terminal.
  • the HARQ feedback information is used to indicate the reception of the direct data after the blind retransmission ends. status;
  • the HARQ feedback information is retransmitted to the second terminal through the second blind retransmission mechanism.
  • An exemplary embodiment of the present disclosure provides a second terminal capable of implementing the feedback information transmission method of direct communication provided by the present disclosure.
  • the second terminal includes: a processor and a memory for storing the processor executable signaling ;
  • the processor is configured as:
  • the HARQ feedback information of the hybrid automatic repeat request transmitted by the first terminal is received.
  • the HARQ feedback information is used to indicate that the direct data is after the blind retransmission ends.
  • Fig. 12 is a block diagram showing a device 1200 for transmitting feedback information for direct communication according to an exemplary embodiment.
  • the apparatus 1200 may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
  • the apparatus 1200 may be a first terminal or a second terminal.
  • the device 1200 may include one or more of the following components: a processing component 1202, a memory 1204, a power supply component 1206, a multimedia component 1208, an audio component 1210, an input/output (I/O) interface 1212, a sensor component 1214, And the communication component 1216.
  • a processing component 1202 a memory 1204, a power supply component 1206, a multimedia component 1208, an audio component 1210, an input/output (I/O) interface 1212, a sensor component 1214, And the communication component 1216.
  • the processing component 1202 generally controls the overall operations of the device 1200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing element 1202 may include one or more processors 1220 to execute instructions to complete all or part of the steps of the foregoing method.
  • the processing component 1202 may include one or more modules to facilitate the interaction between the processing component 1202 and other components.
  • the processing component 1202 may include a multimedia module to facilitate the interaction between the multimedia component 1208 and the processing component 1202.
  • the memory 1204 is configured to store various types of data to support the operation of the device 1200. Examples of these data include instructions for any application or method operating on the device 1200, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 1204 can be implemented by any type of volatile or non-volatile storage devices or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable and Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable and Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic Disk Magnetic Disk or Optical Disk.
  • the power component 1206 provides power to various components of the device 1200.
  • the power component 1206 may include a power management system, one or more power supplies, and other components associated with the generation, management, and distribution of power for the device 1200.
  • the multimedia component 1208 includes a screen that provides an output interface between the device 1200 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure related to the touch or slide operation.
  • the multimedia component 1208 includes a front camera and/or a rear camera. When the device 1200 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 1210 is configured to output and/or input audio signals.
  • the audio component 1210 includes a microphone (MIC).
  • the microphone is configured to receive external audio signals.
  • the received audio signal may be further stored in the memory 1204 or transmitted via the communication component 1216.
  • the audio component 1210 further includes a speaker for outputting audio signals.
  • the I/O interface 1212 provides an interface between the processing component 1202 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include but are not limited to: home button, volume button, start button, and lock button.
  • the sensor component 1214 includes one or more sensors for providing the device 1200 with various aspects of status assessment.
  • the sensor component 1214 can detect the on/off status of the device 1200 and the relative positioning of the components.
  • the component is the display and the keypad of the device 1200.
  • the sensor component 1214 can also detect the position change of the device 1200 or a component of the device 1200. , The presence or absence of contact between the user and the device 1200, the orientation or acceleration/deceleration of the device 1200, and the temperature change of the device 1200.
  • the sensor assembly 1214 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact.
  • the sensor component 1214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 1214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 1216 is configured to facilitate wired or wireless communication between the apparatus 1200 and other devices.
  • the device 1200 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof.
  • the communication component 1216 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 1216 further includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the apparatus 1200 may be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing equipment (DSPD), programmable logic devices (PLD), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • ASIC application specific integrated circuits
  • DSP digital signal processors
  • DSPD digital signal processing equipment
  • PLD programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • non-transitory computer-readable storage medium including instructions, such as the memory 1204 including instructions, which may be executed by the processor 1220 of the device 1200 to complete the foregoing method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
  • a non-transitory computer-readable storage medium When the instructions in the storage medium are executed by the processor of the mobile terminal, the mobile terminal can execute the above-mentioned direct communication feedback information transmission method.
  • An exemplary embodiment of the present disclosure also provides a feedback information transmission system for direct communication, the system including a first terminal and a second terminal;
  • the first terminal includes the feedback information transmission device for direct communication provided by the embodiments shown in FIGS. 9 and 10;
  • the second terminal includes the feedback information transmission device for direct communication provided in the embodiment shown in FIG. 11.
  • An exemplary embodiment of the present disclosure also provides a feedback information transmission system for direct communication, where the feedback information transmission system includes a first terminal and a second terminal;
  • the first terminal and the second terminal are terminals provided in the embodiment shown in FIG. 12.
  • An exemplary embodiment of the present disclosure provides a computer-readable storage medium in which at least one instruction, at least one program, code set, or instruction set is stored, the at least one instruction, the at least one program, The code set or instruction set is loaded and executed by the processor to implement the feedback information transmission method of direct communication as described above.

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Abstract

本公开关于一种直连通信的反馈信息传输方法、装置、设备及系统,属于通信技术领域。所述方法包括:在第一终端确定第二终端以第一盲重传机制最后一次向所述第一终端发送直连数据后,所述第一终端向所述第二终端传输混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;所述第一终端以第二盲重传机制向所述第二终端重传所述HARQ反馈信息。本公开可以提高传输HARQ反馈信息的可靠性,节省网络资源。

Description

直连通信的反馈信息传输方法、装置、设备及系统 技术领域
本公开涉及通信技术领域,特别涉及一种直连通信的反馈信息传输方法、装置、设备及系统。
背景技术
在车联网(Vehicle to Everything,V2X)技术中,车载设备与其它设备(如其它车载设备、路边基础设施、手持设备等)之间可以通过侧链路(sidelink)进行直连通信。
车联网技术支持盲重传机制和HARQ(Hybrid Automatic Repeat Request,混合自动重传请求)反馈重传机制。其中,盲重传机制是指在没有接收到第一终端发送的HARQ反馈信息的情况下,第二终端重复向第一终端传输直连数据,这样,即使第一终端由于半双工的原因没有接收到第一次传输的直连数据(即第一终端在发送该数据的时频资源上发送了直连数据),第一终端也可以接收重复传输的直连数据,以保证数据传输的可靠性。HARQ反馈重传机制是指第一终端在确定第二终端发送直连数据后,根据该直连数据是否被正确接收向第二终端发送HARQ反馈信息,第二终端根据该HARQ反馈信息确定是否重传该直连数据。
相关技术中,可以预配置最后一次重传直连数据的时间与传输HARQ反馈信息的时间之间的时间间隔,这样,在第二终端以盲重传机制向第一终端最后一次发送直连数据后,第一终端可以根据该时间间隔确定传输HARQ反馈信息的时间,再向第二终端传输HARQ反馈信息。
由于预配置的时间间隔相同,所以,若由于半双工的原因导致两个直连数据的最后一次盲重传发生了碰撞,则这两个直连数据的HARQ反馈传输也会发生碰撞。
发明内容
本公开提供了一种直连通信的反馈信息传输方法、装置、设备及系统,用 于解决两个直连数据的最后一次盲重传发生了碰撞,则这两个直连数据的HARQ反馈传输也会发生碰撞的问题。
根据本公开实施例的第一方面,提供一种直连通信的反馈信息传输方法,所述方法包括:
在第一终端确定第二终端以第一盲重传机制最后一次向所述第一终端发送直连数据后,所述第一终端向所述第二终端传输混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
所述第一终端以第二盲重传机制向所述第二终端重传所述HARQ反馈信息。
在一种可能的实现方式中,所述第一终端以第二盲重传机制向所述第二终端重传所述HARQ反馈信息,包括:
所述第一终端确定第一重传时间间隔,所述第一重传时间间隔用于指示所述HARQ反馈信息的相邻两次传输之间的时间间隔;
所述第一终端根据所述第一重传时间间隔向所述第二终端重传所述HARQ反馈信息。
在一种可能的实现方式中,所述第一终端确定第一重传时间间隔,包括:
所述第一终端获取第一次向所述第二终端传输所述HARQ反馈信息的第一资源位置,根据所述第一资源位置确定所述第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔;或者,
所述第一终端获取最近一次向所述第二终端传输所述HARQ反馈信息的第二资源位置,根据所述第二资源位置确定所述第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
在一种可能的实现方式中,所述根据所述第一资源位置确定所述第一重传时间间隔,包括:
所述第一终端获取第一对应关系,所述第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;
所述第一终端在所述第一对应关系中查找与获取到的所述第一资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,所述根据所述第二资源位置确定所述第一重传时间间隔,包括:
所述第一终端获取第二对应关系,所述第二对应关系用于指示第二资源位 置与第一重传时间间隔之间的关系;
所述第一终端在所述第二对应关系中查找与获取到的所述第二资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,所述第一终端确定第一重传时间间隔,包括:
所述第一终端获取第二重传时间间隔,所述第二重传时间间隔用于指示所述直连数据的相邻两次传输之间的时间间隔;
所述第一终端将所述第二重传时间间隔确定为第一重传时间间隔。
在一种可能的实现方式中,所述第一终端根据所述第一重传时间间隔向所述第二终端重传所述HARQ反馈信息,包括:
所述第一终端根据所述第一重传时间间隔确定重传所述HARQ反馈信息所使用的资源集合,所述资源集合包括时间资源、频率资源和码资源中的至少一种;
所述第一终端将所述资源集合划分为至少两个正交的资源子集合;
所述第一终端根据重传的次数,使用所述至少两个正交的资源子集合中的目标资源子集合中的资源向所述第二终端重传所述HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
在一种可能的实现方式中,所述HARQ反馈信息为第一HARQ反馈信息,所述方法还包括:
所述第一终端获取配置信息;
所述第一终端根据所述配置信息确定向所述第二终端传输所述第一HARQ反馈信息;或者,所述第一终端根据所述配置信息确定接收第三终端传输的第二HARQ反馈信息,其中,传输所述第一HARQ反馈信息和传输所述第二HARQ反馈信息的时间资源相同。
根据本公开实施例的第二方面,提供一种直连通信的反馈信息传输方法,所述方法包括:
在以第一盲重传机制最后一次向第一终端发送直连数据后,第二终端接收所述第一终端传输的混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
所述第二终端接收所述第一终端以第二盲重传机制重传的所述HARQ反馈信息。
在一种可能的实现方式中,所述第二终端接收所述第一终端以第二盲重传机制重传的所述HARQ反馈信息,包括:
所述第二终端确定第一重传时间间隔,所述第一重传时间间隔用于指示所述HARQ反馈信息的相邻两次传输之间的时间间隔;
所述第二终端根据所述第一重传时间间隔接收所述第一终端重传的所述HARQ反馈信息。
在一种可能的实现方式中,所述第二终端确定第一重传时间间隔,包括:
所述第二终端获取第一次接收所述第一终端传输的所述HARQ反馈信息的第一资源位置,根据所述第一资源位置确定所述第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔;或者,
所述第二终端获取最近一次接收所述第一终端传输的所述HARQ反馈信息的第二资源位置,根据所述第二资源位置确定所述第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
在一种可能的实现方式中,所述根据所述第一资源位置确定所述第一重传时间间隔,包括:
所述第二终端获取第一对应关系,所述第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;
所述第二终端在所述第一对应关系中查找与获取到的所述第一资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,所述根据所述第二资源位置确定所述第一重传时间间隔,包括:
所述第二终端获取第二对应关系,所述第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;
所述第二终端在所述第二对应关系中查找与获取到的所述第二资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,所述第二终端确定第一重传时间间隔,包括:
所述第二终端获取第二重传时间间隔,所述第二重传时间间隔用于指示所述直连数据的相邻两次传输之间的时间间隔;
所述第二终端将所述第二重传时间间隔确定为第一重传时间间隔。
在一种可能的实现方式中,所述第二终端根据所述第一重传时间间隔接收所述第一终端重传的所述HARQ反馈信息,包括:
所述第二终端根据所述第一重传时间间隔确定重传所述HARQ反馈信息所使用的资源集合,所述资源集合包括时间资源、频率资源和码资源中的至少一种;
所述第二终端将所述资源集合划分为至少两个正交的资源子集合;
所述第二终端根据重传的次数,使用所述至少两个正交的资源子集合中的目标资源子集合中的资源接收所述第一终端重传的所述HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
根据本公开实施例的第三方面,提供一种直连通信的反馈信息传输装置,所述装置包括:
传输模块,被配置为在确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,向所述第二终端传输混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
重传模块,被配置为以第二盲重传机制向所述第二终端重传所述HARQ反馈信息。
在一种可能的实现方式中,所述重传模块,还被配置为:
确定第一重传时间间隔,所述第一重传时间间隔用于指示所述HARQ反馈信息的相邻两次传输之间的时间间隔;
根据所述第一重传时间间隔向所述第二终端重传所述HARQ反馈信息。
在一种可能的实现方式中,所述重传模块,还被配置为:
获取第一次向所述第二终端传输所述HARQ反馈信息的第一资源位置,根据所述第一资源位置确定所述第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔;或者,
获取最近一次向所述第二终端传输所述HARQ反馈信息的第二资源位置,根据所述第二资源位置确定所述第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
在一种可能的实现方式中,所述重传模块,还被配置为:
获取第一对应关系,所述第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;
在所述第一对应关系中查找与获取到的所述第一资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,所述重传模块,还被配置为:
获取第二对应关系,所述第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;
在所述第二对应关系中查找与获取到的所述第二资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,所述重传模块,还被配置为:
获取第二重传时间间隔,所述第二重传时间间隔用于指示所述直连数据的相邻两次传输之间的时间间隔;
将所述第二重传时间间隔确定为第一重传时间间隔。
在一种可能的实现方式中,所述重传模块,还被配置为:
根据所述第一重传时间间隔确定重传所述HARQ反馈信息所使用的资源,所述资源包括时间资源、频率资源和码资源中的至少一种;
将所述资源集合划分为至少两个正交的资源子集合;
根据重传的次数,使用所述至少两个正交的资源子集合中的目标资源子集合中的资源向所述第二终端重传所述HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
在一种可能的实现方式中,所述HARQ反馈信息为第一HARQ反馈信息,所述装置还包括:
获取模块,被配置为获取配置信息;
确定模块,被配置为根据所述配置信息确定向所述第二终端传输所述第一HARQ反馈信息;或者,根据所述配置信息确定接收第三终端传输的第二HARQ反馈信息,其中,传输所述第一HARQ反馈信息和传输所述第二HARQ反馈信息的时间资源相同。
根据本公开实施例的第四方面,提供一种直连通信的反馈信息传输装置,所述装置包括:
接收模块,被配置为在以第一盲重传机制最后一次向第一终端发送直连数据后,接收所述第一终端传输的混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
所述接收模块,还被配置为接收所述第一终端以第二盲重传机制重传的所述HARQ反馈信息。
在一种可能的实现方式中,所述接收模块,还被配置为:
确定第一重传时间间隔,所述第一重传时间间隔用于指示所述HARQ反馈信息的相邻两次传输之间的时间间隔;
根据所述第一重传时间间隔接收所述第一终端重传的所述HARQ反馈信息。
在一种可能的实现方式中,所述接收模块,还被配置为:
获取第一次接收所述第一终端传输的所述HARQ反馈信息的第一资源位置,根据所述第一资源位置确定所述第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔;或者,
获取最近一次接收所述第一终端传输的所述HARQ反馈信息的第二资源位置,根据所述第二资源位置确定所述第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
在一种可能的实现方式中,所述接收模块,还被配置为:
获取第一对应关系,所述第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;
在所述第一对应关系中查找与获取到的所述第一资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,所述接收模块,还被配置为:
获取第二对应关系,所述第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;
在所述第二对应关系中查找与获取到的所述第二资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,所述接收模块,还被配置为:
获取第二重传时间间隔,所述第二重传时间间隔用于指示所述直连数据的相邻两次传输之间的时间间隔;
将所述第二重传时间间隔确定为第一重传时间间隔。
在一种可能的实现方式中,所述接收模块,还被配置为:
根据所述第一重传时间间隔确定重传所述HARQ反馈信息所使用的资源集合,所述资源集合包括时间资源、频率资源和码资源中的至少一种;
将所述资源集合划分为至少两个正交的资源子集合;
根据重传的次数,使用所述至少两个正交的资源子集合中的目标资源子集 合中的资源接收所述第一终端重传的所述HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
根据本公开实施例的第五方面,提供一种第一终端,所述第一终端包括:
处理器;
用于存储处理器可执行指令的存储器;
其中,所述处理器被配置为:
在确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,向所述第二终端传输混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
以第二盲重传机制向所述第二终端重传所述HARQ反馈信息。
根据本公开实施例的第六方面,提供一种第二终端,所述第二终端包括:
处理器;
用于存储处理器可执行指令的存储器;
其中,所述处理器被配置为:
在所述以第一盲重传机制最后一次向第一终端发送直连数据后,接收所述第一终端传输的混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
接收所述第一终端以第二盲重传机制重传的所述HARQ反馈信息。
根据本公开实施例的第七方面,提供一种直连通信的反馈信息传输系统,所述系统包括第一终端和第二终端;
所述第一终端包括如第三方面所述的数据传输装置;
所述第二终端包括如第四方面所述的数据传输装置。
根据本公开实施例的第八方面,提供一种直连通信的反馈信息传输系统,所述系统包括第一终端和第二终端;
所述第一终端如第五方面所述的第一终端;
所述第二终端如第六方面所述的第二终端。
根据本公开实施例的第九方面,提供一种计算机可读存储介质,所述存储介质中存储有至少一条指令、至少一段程序、代码集或指令集,所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现如第一方面或第二方面所述的直连通信的反馈信息传输方法。
本公开的实施例提供的技术方案可以包括以下有益效果:
在第一终端确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,第一终端会向第二终端传输HARQ反馈信息,以通过该HARQ反馈信息来指示直连数据在盲重传结束后的接收状态。由于第二终端可能会因为某些原因没有接收到该HARQ反馈信息,所以,第一终端需要以第二盲重传机制向第二终端重传HARQ反馈信息,这样,即使第二终端没有接收到某一次传输的HARQ反馈信息,还可以接收重传的HARQ反馈信息,可以避免第二终端误以为第一终端没有接收到直连数据,而重新以第一盲重传机制向第一终端发送该直连数据,从而浪费网络资源的问题,达到了节省网络资源的效果。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性的,并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本公开说明书的一部分,示出了符合本公开的实施例,并与说明书一起用于解释本公开的原理。
图1是本公开各个实施例适用的一种网络架构的示意图。
图2是相关技术中的一种直连通信的反馈信息传输方法的流程图。
图3是相关技术中的一种直连通信的反馈信息传输方法的流程图。
图4是根据一示例性实施例示出的一种直连通信的反馈信息传输方法的流程图。
图5是根据另一示例性实施例示出的一种直连通信的反馈信息传输方法的流程图。
图6是根据另一示例性实施例示出的一种直连通信的反馈信息传输的示意图。
图7是根据另一示例性实施例示出的一种直连通信的反馈信息传输的示意图。
图8是根据另一示例性实施例示出的一种资源划分的示意图。
图9是根据一示例性实施例示出的一种直连通信的反馈信息传输装置的框图。
图10是根据一示例性实施例示出的一种直连通信的反馈信息传输装置的框图。
图11是根据一示例性实施例示出的一种直连通信的反馈信息传输装置的框图。
图12是根据一示例性实施例示出的一种用于直连通信的反馈信息传输的装置的框图。
具体实施方式
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
本公开实施例描述的网络架构以及业务场景是为了更加清楚地说明本公开实施例的技术方案,并不构成对本公开实施例提供的技术方案的限定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本公开实施例提供的技术方案对于类似的技术问题,同样适用。
图1示出了本公开实施例可能适用的一种网络架构的示意图。该网络架构可以是一种C-V2X系统的网络架构。其中,C是指蜂窝(英文:Cellular),C-V2X系统是基于3G、4G或5G等蜂窝网通信系统演进形成的车载无线通信系统。该网络架构可以包括:核心网11、接入网12和终端13。
核心网11中包括若干核心网设备。核心网设备的功能主要是提供用户连接、对用户的管理以及对业务完成承载,作为承载网络提供到外部网络的接口。例如,LTE(Long Term Evolution,长期演进)系统的核心网中可以包括MME(Mobility Management Entity,移动管理节点)、S-GW(Serving Gateway,服务网关)、P-GW(PDN Gateway,PDN网关)等设备。5G NR(New Radio,新空口)系统的核心网中可以包括AMF(Access and Mobility Management Function, 接入和移动性管理功能)实体、UPF(User Plane Function,用户平面功能)实体和SMF(Session Management Function,会话管理功能)实体等设备。
接入网12中包括若干接入网设备120。接入网设备120与核心网设备110之间通过某种接口技术互相通信,例如LTE系统中的S1接口,5G NR系统中的NG接口。接入网设备120可以是BS(Base Station,基站),基站是一种部署在接入网12中用以为终端13提供无线通信功能的装置。基站可以包括各种形式的宏基站,微基站,中继站,接入点等等。在采用不同的无线接入技术的系统中,具备基站功能的设备的名称可能会有所不同,例如在LTE系统中,称为eNodeB或者eNB;在5G NR系统中,称为gNodeB或者gNB。随着通信技术的演进,“基站”这一名称可能会变化。为方便描述,本公开实施例中,上述为终端13提供无线通信功能的装置统称为接入网设备120。
终端13可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备,以及各种形式的UE(User Equipment,用户设备),MS(Mobile Station,移动台),终端(terminal device)等等。为方便描述,上面提到的设备统称为终端。接入网设备120与终端13之间通过某种空口技术互相通信,例如Uu接口。
在本公开实施例中,终端13包括:车辆131、其它车辆132、基础设施133和行人134。
车辆对车辆(Vehicle to Vehicle,V2V)是指车辆131与其它车辆132之间的通信,本方车辆将本方的相关信息发送给对方车辆,相关信息包括行驶速度、地理位置、行驶方向和行驶状态等。
车辆对基础设施(Vehicle to Infrastructure,V2I)是指车辆131与基础设施133之间的通信,基础设施133包括车辆行驶过程中遇到的所有基础设施,包括红绿灯、公交站、大楼和隧道等建筑设施。
车辆对行人(Vehicle to Pedestrian,V2P)是指车辆131与行人134之间的通信。行人(Pedestrian)泛指行人携带的具有移动通信能力的电子设备,比如,手机和可穿戴设备,其中,可穿戴设备包括智能手环、智能手表和智能戒指等。
在本申请实施例中,将车辆131称为第一终端,将其它车辆132、基础设施133和行人134称为第二终端来举例说明,但是两者也可以互换角色,对此不加以限定。
可选地,上述第一终端和第二终端均为支持直连通信的终端,上述通信系 统可以是NR系统及后续演进系统。
LTE中的V2X直连通信只能支持一些基础安全方面的V2X应用,如交换CAM(Cooperative Awareness Messages)或DENM(Decentralized Environmental Notification Message)等基础安全信息(BSM–Basic Safety Message)。近来随着自动驾驶等技术的发展,为了支持新的V2X业务,对于V2X技术的性能又提出了新的要求。利用5G NR技术支持新的V2X通信服务和场景已经被3GPP计划为Rel16的一项重要内容。3GPP SA1(Service Requirement)工作组已经设立了一些新的V2x通信需要满足的业务需求,包括车队管理(Vehicles Platooning),感知扩展(Extended Sensors),先进驾驶(Advanced Driving),和远程驾驶(remote driving)。总体来说,NR V2X直连通信需要提供更高的通信速率,更短的通信延时,更可靠的通信质量。
需要说明的是,上述网络架构中的终端13可以为半双工通信模块,也可以为全双工通信模式。
半双工是指由于收发干扰的存在,终端在同一时间资源上不能同时收发直连数据。在V2X业务场景中,终端可能同时存在多种业务,有的业务需要发送直连数据,有的业务需要接收直连数据。如果终端在某一个时间资源上发送直连数据,那么该终端就无法接收在同一时间资源上接收其他终端发送的直连数据,即使发送的直连数据和接收的直连数据所占据的频域资源正交也不行。
全双工是指终端在同一时间资源上能够同时收发直连数据。
为了保证第一终端与第二终端之间的数据传输的可靠性,在NR V2X的讨论中,RAN1(Radio Access Network,无线接入网)决议支持对于直连通信的单播、组播业务使用物理层HARQ反馈重传机制;且为了解决半双工的问题,支持不依赖反馈的直连数据的盲重传机制(blind re-transmission)。
盲重传机制是指在没有接收到第一终端发送的HARQ反馈信息的情况下,第二终端重复向第一终端传输直连数据,这样,即使第一终端由于半双工的原因没有接收到第一次传输的直连数据(即第一终端在发送该数据的时频资源上发送了直连数据),第一终端也可以接收重复传输的直连数据,以保证数据传输的可靠性。本实施例中将第一次传输直连数据或HARQ反馈信息称为传输过程, 将第二次及后续传输直连数据或HARQ反馈信息称为盲重传过程。
HARQ反馈重传机制是指第二终端向第一终端发送直连数据后,第一终端根据该直连数据是否被正确接收向第二终端发送HARQ反馈信息,第二终端根据该HARQ反馈信息确定是否重传该直连数据。对于直连通信的HARQ反馈重传机制,RAN1决议支持通过预配置或者系统配置的方式来设定HARQ反馈信息传输与直连数据传输之间的时间间隔。
若第二终端和第一终端都同时使用HARQ反馈重传机制和盲重传机制,那么,在第一终端确定第二终端以盲重传机制最后一次传输直连数据后,根据该直连数据是否被正确接收而向第二终端传输HARQ-ACK(即HARQ反馈信息);第二终端根据HARQ-ACK决定是否进行HARQ重传(即是否重新以盲重传机制向第一终端传输直连数据)。请参考图2,第二终端分别在第n-1个和第n个时隙(slot)内向第一终端传输了两次同一直连数据,第一终端在第m个时间单元内向第二终端传输HARQ反馈信息,其中,n-m即为预配置或系统配置的值。其中,n和m为正整数。为了便于区分,图2中以白框表示直连数据,以竖线的阴影框表示HARQ反馈信息。需要说明的是,还可以配置专门用于传输HARQ反馈信息的时间资源,本实施例不限定该时间资源所包括的符号的数量和位置。在一种可能的实现方式中,本实施例以该时间资源为时隙中倒数第2和3个符号为例进行说明,图2及下文的图中以灰框表示该时间资源。
相关技术中,为每个直连通信所配置的时间间隔相同。这里所说的直连通信是指不同终端间发送直连数据的通信,比如,第一终端向第二终端发送直连数据称为一次直连通信,第二终端向第三终端发送直连数据称为一次直连通信。若由于半双工的原因导致两个直连通信的最后一次盲重传发生了碰撞,则这两个直连通信的HARQ反馈传输也会发生碰撞。
请参考图3,假设盲重传的次数为1,第二终端分别在第n-2个和第n个时隙(slot)内向第一终端传输第一直连数据,第一终端分别在第n-1个和n个时隙内向第三终端传输第二直连数据。对于第一终端来说,第一终端需要分别在第n-2个和第n个时隙内接收第二终端传输的第一直连数据,分别在第n-1个和第n个时隙内向第三终端传输第二直连数据。这样,在第n-2个时隙内,第一终端可以接收到第一直连数据;在第n个时隙内,由于半双工的原因,第一终端可以发送第二直连数据,无法接收第一直连数据。由于第一直连数据和第二直连数据都在第n个时隙内传输,而n-m是预设的值,所以,在第m个时隙内, 第一终端既需要向第二终端发送针对第一直连数据的第一HARQ反馈信息,也需要接收第三终端发送的针对第二直连数据的第二HARQ反馈信息。由于半双工的原因,第一终端要么无法发送第一HARQ反馈信息,要么无法接收第二HARQ反馈信息。为了便于区分,图3以及下文中的图6-8中以白框表示第一直连数据,以黑框表示第二直连数据,以竖线的阴影框表示第一HARQ反馈信息,以横线的阴影框表示第二HARQ反馈信息。
本公开实施例中,第一终端可以以盲重传机制向第二终端传输HARQ反馈信息,这样,即使第二终端因为半双工的原因没有接收到HARQ反馈信息,还可以接收到重传的HARQ反馈信息,从而提高传输HARQ反馈信息的可靠性。
下面,通过几个示例性实施例对本公开技术方案进行介绍说明。
图4是根据一示例性实施例示出的一种直连通信的反馈信息传输方法的流程图,该直连通信的反馈信息传输方法应用于图1所示的网络架构中,如图4所示,该直连通信的反馈信息传输方法包括以下步骤。
在步骤401中,在第一终端确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,第一终端向第二终端传输HARQ反馈信息。
直连数据是第二终端通过直连链路向第一终端发送的物理层数据。
HARQ反馈信息用于指示直连数据在盲重传结束后的接收状态。比如,HARQ反馈信息可以用于指示第一终端已经正确接收了第二终端发送的直连数据,或者,HARQ反馈信息可以用于指示第一终端未正确接收第二终端发送的直连数据。
第一盲重传机制是针对直连数据设置的盲重传机制,其可以规定直连数据的重传次数、每次传输之间的时间间隔等信息。
在步骤402中,第二终端接收第一终端传输的HARQ反馈信息。
第二终端可能由于半双工的原因没有接收到HARQ反馈信息,所以,为了保证传输HARQ反馈信息的可靠性,第一终端还可以盲重传HARQ反馈信息,即执行步骤403。
在步骤403中,第一终端以第二盲重传机制向第二终端重传HARQ反馈信息。
第二盲重传机制是针对HARQ反馈信息设置的盲重传机制,其可以规定HARQ反馈信息的重传次数、每次传输之间的时间间隔等信息。
第二盲重传机制可以与第一盲重传机制相同,也可以与第一盲重传机制不同,本实施例不作限定。
在步骤404中,第二终端接收第一终端以第二盲重传机制重传的HARQ反馈信息。
其中,步骤401和403可以单独实现成为第一终端侧的实施例,步骤402和404可以单独实现成为第二终端侧的实施例。
综上所述,本公开提供的直连通信的反馈信息传输方法,在第一终端确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,第一终端会向第二终端传输HARQ反馈信息,以通过该HARQ反馈信息来指示直连数据在盲重传结束后的接收状态。由于第二终端可能会因为某些原因没有接收到该HARQ反馈信息,所以,第一终端需要以第二盲重传机制向第二终端重传HARQ反馈信息,这样,即使第二终端没有接收到某一次传输的HARQ反馈信息,还可以接收重传的HARQ反馈信息,可以避免第二终端误以为第一终端没有接收到直连数据,而重新以第一盲重传机制向第一终端发送该直连数据,从而浪费网络资源的问题,达到了节省网络资源的效果。
图5是根据另一示例性实施例示出的一种直连通信的反馈信息传输方法的流程图,该直连通信的反馈信息传输方法应用于图1所示的网络架构中,如图5所示,该直连通信的反馈信息传输方法包括如下步骤。
在步骤501中,在第一终端确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,第一终端向第二终端传输HARQ反馈信息。
直连数据是第二终端通过直连链路向第一终端发送的物理层数据。
HARQ反馈信息用于指示直连数据在盲重传结束后的接收状态。比如,HARQ反馈信息可以用于指示第一终端已经正确接收了第二终端发送的直连数据,或者,HARQ反馈信息可以用于指示第一终端未正确接收第二终端发送的直连数据。
第一盲重传机制是针对直连数据设置的盲重传机制,其可以规定直连数据的重传次数、每次传输之间的时间间隔等信息。
在第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,第一终端可以获取预配置或系统配置的HARQ反馈信息传输与直连数据传输之间的时间间隔,再根据最后一次传输直连数据的时间资源和该时间间隔来确定传输 HARQ反馈信息的时间资源,在该时间资源上向第二终端传输HARQ反馈信息。仍然以图2为例,最后一次传输直连数据的时间资源为第n个时隙,预配置或系统配置的时间间隔为n-m,则第一终端可以确定传输HARQ反馈信息的时间资源为第m个时隙,在第m个时隙上向第二终端传输HARQ反馈信息。
在步骤502中,第二终端接收第一终端传输的HARQ反馈信息。
第二终端可以获取预配置或系统配置的HARQ反馈信息传输与直连数据传输之间的时间间隔,再根据最后一次传输直连数据的时间资源和该时间间隔来确定传输HARQ反馈信息的时间资源,在该时间资源上接收第一终端传输的HARQ反馈信息。
若第二终端为半双工通信模式,且第一终端向第二终端传输HARQ反馈信息时,第二终端正在向第三终端传输HARQ反馈信息,那么第二终端可能无法接收到第一终端传输的HARQ反馈信息,所以,第一终端需要以第二盲重传机制向第二终端重传HARQ反馈信息,以提高传输HARQ反馈信息的可靠性,从而可以避免第二终端误以为第一终端没有接收到直连数据,而重新以第一盲重传机制向第一终端发送该直连数据,从而浪费网络资源的问题,达到了节省网络资源的效果。
第二盲重传机制是针对HARQ反馈信息设置的盲重传机制,其可以规定HARQ反馈信息的重传次数、每次传输之间的时间间隔等信息。
第二盲重传机制可以与第一盲重传机制相同,也可以与第一盲重传机制不同,本实施例不作限定。
下面对第一终端以第二盲重传机制向第二终端重传HARQ反馈信息的实现进行说明。
在步骤503中,第一终端确定第一重传时间间隔,该第一重传时间间隔用于指示HARQ反馈信息的相邻两次传输之间的时间间隔。
其中,第一重传时间间隔包括第一次重传HARQ反馈信息与第一次传输HARQ反馈信息之间的时间间隔,以及,不同次重传HARQ反馈信息之间的时间间隔。
第一终端确定第一重传时间间隔的实现方式可以有很多种。比如,可以为每次直连通信设定不同的第一重传时间间隔,或者,可以根据传输HARQ反馈信息的资源来确定第一重传时间间隔等等,本实施例不作限定。下面对根据传输HARQ反馈信息的资源来确定第一重传时间间隔的三种实现方式进行说明。
在第一种实现方式中,第一终端获取第一次向第二终端传输HARQ反馈信息的第一资源位置;第一终端根据第一资源位置确定第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔。
这里所说的第一资源位置是第一资源的位置,第一资源为时间资源、频率资源和码资源中的一种。下面以第一资源为第一频率资源为例,对实现过程进行介绍。
若第一终端在某一时间资源上第一次向第二终端传输HARQ反馈信息时,还需要在该时间资源上接收第三终端传输的HARQ反馈信息,那么这两个HARQ反馈信息所占用的第一频率资源必然不同。所以,可以根据传输HARQ反馈信息的第一频率资源位置来确定第一重传时间间隔,并规定不同的第一频率资源位置对应于不同的第一重传时间间隔,这样,可以保证重传这两个HARQ反馈信息时不会占用相同的时间资源,从而避免重传这两个HARQ反馈信息时发生时域重合的可能性。这里所说的第一频率资源位置可以是第一频率资源的起始位置和/或第一频率资源的结束位置。
本实施例中,第一终端根据第一资源位置确定第一重传时间间隔的实现方式有很多种。比如,可以设定输入参数为第一资源位置,输出参数为第一重传时间间隔的公式,或者,可以设定不同的第一资源位置与不同的第一重传时间间隔之间的第一对应关系等等,本实施例不作限定。
若通过第一对应关系来确定第一重传时间间隔,则第一终端根据第一资源位置确定第一重传时间间隔,包括:第一终端获取第一对应关系,该第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;第一终端在第一对应关系中查找与获取到的第一资源位置对应的第一重传时间间隔。
其中,第一对应关系可以是预配置或系统配置的。预配置对应关系是指接入网设备向第一终端配置第一对应关系,则接入网设备可以预先生成包含第一对应关系的配置信息,并将该配置信息发送给第一终端,第一可以接收接入网设备发送的配置信息,从该配置信息中读取第一对应关系。系统配置对应关系是指通信协议中预定义有第一对应关系,此时,第一终端可以直接读取第一对应关系。
在获取到第一对应关系后,第一终端可以基于上述获取到的第一资源位置,在该第一对应关系中查找对应的第一重传时间间隔。
请参考图6,以第一资源为第一频率资源为例,若第一终端在第m个时隙 内第一次向第二终端传输HARQ反馈信息时,还需要在第m个时隙内接收第三终端传输的HARQ反馈信息,那么这两个HARQ反馈信息所占用的第一频率资源必然不同。假设第一对应关系中,向第二终端传输HARQ反馈信息所使用的第一资源位置对应于2个时隙的第一重传时间间隔,接收第三终端传输的HARQ反馈信息所使用的第一资源位置对应于4个时隙的第一重传时间间隔,则第一终端可以在第m+2个时隙内向第二终端传输HARQ反馈信息,在第m+4个时隙内接收第三终端传输的HARQ反馈信息。
需要说明的是,由于第一次传输HARQ反馈信息的第一资源位置固定不变,所以,在第一对应关系中查找到的第一重传时间间隔也是固定不变的,即,每次重传HARQ反馈信息的时间间隔相同。
在第二种实现方式中,第一终端获取最近一次向第二终端传输HARQ反馈信息的第二资源位置;第一终端根据第二资源位置确定第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
第二种实现方式与第一种实现方式的区别在于,第二种实现方式中获取的第二资源位置是最近一次向第二终端传输HARQ反馈信息的第二资源位置,而不是第一次向第二终端传输HARQ反馈信息的第一资源位置。
同样的,第一终端根据第二资源位置确定第一重传时间间隔的实现方式有很多种。比如,可以设定输入参数为第二资源位置,输出参数为第一重传时间间隔的公式,或者,可以设定不同的第二资源位置与不同的第一重传时间间隔之间的第二对应关系等等,本实施例不作限定。
若通过第二对应关系来确定第一重传时间间隔,则第一终端根据第二资源位置确定第一重传时间间隔,包括:第一终端获取第二对应关系,该第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;第一终端在第二对应关系中查找与获取到的第二资源位置对应的第一重传时间间隔。其实现方式可以参照上述第一种实现方式中的说明。
在第三种实现方式中,第一终端获取第二重传时间间隔,该第二重传时间间隔用于指示直连数据的相邻两次传输之间的时间间隔;第一终端将第二重传时间间隔确定为第一重传时间间隔。
如果第二终端每次向第一终端传输直连数据都会与第一终端向第三终端传输直连数据发生碰撞,那么,可能是上述终端存在发送或接收问题,也就没有必要再传输HARQ反馈信息了。如果至少一次第二终端向第一终端传输直连数 据未与第一终端向第三终端传输直连数据发生碰撞,那么,第二终端向第一终端传输直连数据的时间间隔与第一终端向第三终端传输直连数据的时间间隔必然不同。所以,可以根据传输直连数据的第二重传时间间隔来确定第一重传时间间隔,这样,可以保证重传这两个HARQ反馈信息时不会每次都发生碰撞。
可选的,若重传直连数据时,每个第二重传时间间隔相等,则每个第一重传时间间隔相等。
可选的,若重传直连数据时,每个第二重传时间间隔不等,则可以根据各个第二重传时间间隔来计算第一重传时间间隔。比如,可以对所有的第二重传时间间隔求平均值,将得到的平均值作为第一重传时间间隔。或者,可以将所有第二重传时间间隔的中间值作为第一重传时间间隔。或者,可以将不同重传次数的第二重传时间间隔作为对应重传次数的第一重传时间间隔。比如,第一次和第二次直连数据重传之间的第二重传时间间隔为1个时隙,第二次和第三次直连数据重传之间的第二重传时间间隔为2个时隙,则第一次和第二次HARQ反馈信息重传之间的第一重传时间间隔为1个时隙,第二次和第三次HARQ反馈信息重传之间的第一重传时间间隔为2个时隙。
请参考图7,第二终端向第一终端重传直连数据时的第二重传时间间隔为2个时隙,第一终端向第三终端重传直连数据时的第二重传时间间隔为1个时隙,若第一终端在第m个时隙内第一次向第二终端传输HARQ反馈信息时,还需要在第m个时隙内接收第三终端传输的HARQ反馈信息,则第一终端可以在第m+1个时隙内向第二终端传输HARQ反馈信息,在第m+2个时隙内接收第三终端传输的HARQ反馈信息。
在步骤504中,第一终端根据第一重传时间间隔向第二终端重传HARQ反馈信息。
第一终端可以根据第一次传输HARQ反馈信息所使用的资源集合和第一重传时间间隔,确定重传HARQ反馈信息所使用的资源集合,使用该资源集合中的资源向第二终端重传HARQ反馈信息。其中,资源集合包括时间资源、频率资源和码资源中的至少一种。
通过上述实现可以保证在重传不同HARQ反馈信息时,相同次的重传不会产生碰撞,但是不同次的重传还是可能会产生碰撞,所以,还可以为不同次的重传选择正交的资源,从而保证不同次的重传也不会产生碰撞。
在一种可能的实现方式中,第一终端根据第一重传时间间隔向第二终端重 传HARQ反馈信息,包括:
1)第一终端根据第一重传时间间隔确定重传HARQ反馈信息所使用的资源集合,资源集合包括时间资源、频率资源和码资源中的至少一种。
2)第一终端将资源集合划分为至少两个正交的资源子集合。
其中,第一终端可以根据接入网设备的配置,确定对资源集合的划分方式,从而得到至少两个正交的资源子集合。时间资源、频率资源和码资源的划分方式相同,下面以频率资源为例对资源的划分进行说明。
例如,RAN1已经决议使用子信道(subchannel)作为频域资源分配的最小单元,每个子信道包含多个PRB(Physical Resource Block,物理资源块)。直连通信中的频率资源池包含多个子信道,并将每个子信道里可以供传输HARQ反馈信息使用的频率资源划分为多个正交的频率资源子集合。请参考图8,假设频率资源包含5个子信道,每个子信道中包含6个PRB,每个时隙中的倒数第2个和第3个OFDM(Orthogonal Frequency Division Multiplexing,正交频分复用)符号可以用于传输HARQ反馈信息,则第一终端可以将每个子信道划分为两个包含不同频率资源的正交的PRB集合(即PRB0,1,2为一个PRB集合、PRB3,4,5为一个PRB集合)。当资源集合包括频率资源时,第一终端可以将每个PRB集合作为一个资源子集合。
同理,当资源集合包括时间资源时,第一终端可以对时间资源进行划分,得到正交的符号集合,将每个符号集合作为一个资源子集合。
同理,当资源集合包括码资源时,第一终端可以对码资源进行划分,得到正交的码资源集合,将每个码资源集合作为一个资源子集合。
当资源集合包括频率资源和时间资源时,第一终端可以将一个PRB集合和一个符号集合作为一个资源子集合。当资源集合包括频率资源和码资源时,第一终端可以将一个PRB集合和一个码资源集合作为一个资源子集合。当资源集合包括时间资源和码资源时,第一终端可以将一个符号集合和一个码资源集合作为一个资源子集合。当资源集合包括频率资源、时间资源和码资源时,第一终端可以将一个PRB集合、一个符号集合和一个码资源集合作为一个资源子集合。
3)第一终端根据重传的次数,使用至少两个正交的资源子集合中的目标资源子集合中的资源向第二终端重传HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
本实施例中,可以预配置或系统配置不同的重传次数与不同的目标资源子集合之间的对应关系,这样,第一终端可以根据当前的重传次数来从至少两个正交的资源子集合中选择目标资源子集合,再使用该目标资源子集合中的资源向第二终端重传HARQ反馈信息。其中,目标资源子集合为本次选中的一个资源子集合。
比如,重传次数1对应于资源子集合1,重传次数2对应于资源子集合2,且第一终端第1次向第二终端重传HARQ反馈信息,则第一终端选择的是资源子集合1,将资源子集合1作为目标资源子集合,使用资源子集合1中的资源向第二终端重传HARQ反馈信息。
下面对第二终端接收第一终端以第二盲重传机制重传的HARQ反馈信息的实现进行说明。
在步骤505中,第二终端确定第一重传时间间隔。
若第一终端以第二盲重传机制向第二终端传输了HARQ反馈信息,则第二终端需要确定重传HARQ反馈信息的资源位置,在该资源位置上接收该HARQ反馈信息。这里,第二终端可以先确定第一重传时间间隔,再根据第一重传时间间隔确定该资源位置。
其中,第二终端确定第一重传时间间隔的实现方式与第一终端确定第一重传时间间隔的实现方式相同,下面对其中的三种实现方式进行说明。
在第一种实现方式中,第二终端获取第一次接收第一终端传输的HARQ反馈信息的第一资源位置;第二终端根据第一资源位置确定第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔。
这里所说的第一资源位置是第一资源的位置,第一资源为时间资源、频率资源和码资源中的一种。
本实施例中,第二终端根据第一资源位置确定第一重传时间间隔的实现方式有很多种。比如,可以设定输入参数为第一资源位置,输出参数为第一重传时间间隔的公式,或者,可以设定不同的第一资源位置与不同的第一重传时间间隔之间的第一对应关系等等,本实施例不作限定。
若通过第一对应关系来确定第一重传时间间隔,则第二终端根据第一资源位置确定第一重传时间间隔,包括:第二终端获取第一对应关系,第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;第二终端在第一对应关系中查找与获取到的第一资源位置对应的第一重传时间间隔。
在第二种实现方式中,第二终端获取最近一次接收第一终端传输的HARQ反馈信息的第二资源位置;第二终端根据第二资源位置确定第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
同样的,第二终端根据第二资源位置确定第一重传时间间隔的实现方式有很多种。比如,可以设定输入参数为第二资源位置,输出参数为第一重传时间间隔的公式,或者,可以设定不同的第二资源位置与不同的第一重传时间间隔之间的第二对应关系等等,本实施例不作限定。
若通过第二对应关系来确定第一重传时间间隔,则第二终端根据第二资源位置确定第一重传时间间隔,包括:第二终端获取第二对应关系,第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;第二终端在第二对应关系中查找与获取到的第二资源位置对应的第一重传时间间隔。
在第三种实现方式中,第二终端获取第二重传时间间隔,第二重传时间间隔用于指示直连数据的相邻两次传输之间的时间间隔;第二终端将第二重传时间间隔确定为第一重传时间间隔。
上述三种实现方式的实现细节详见步骤503中的描述,此处不作赘述。
在步骤506中,第二终端根据第一重传时间间隔接收第一终端重传的HARQ反馈信息。
第二终端可以根据第一次接收HARQ反馈信息所使用的资源集合和第一重传时间间隔,确定重传HARQ反馈信息所使用的资源集合,使用该资源集合中的资源接收第二终端重传的HARQ反馈信息。其中,资源集合包括时间资源、频率资源和码资源中的至少一种。
在一种可能的实现方式中,第二终端根据第一重传时间间隔接收第一终端以第二盲重传机制重传的HARQ反馈信息,包括:
1)第二终端根据第一重传时间间隔确定重传HARQ反馈信息所使用的资源集合,资源集合包括时间资源、频率资源和码资源中的至少一种。
2)第二终端将资源集合划分为至少两个正交的资源子集合。
3)第二终端根据重传的次数,使用至少两个正交的资源子集合中的目标资源子集合中的资源接收第一终端重传的HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
上述实现方式的实现细节详见步骤504中的描述,此处不作赘述。
需要说明的是,若将第一终端向第二终端传输的HARQ反馈信息称为第一 HARQ反馈信息,则该方法还可以包括:第一终端获取配置信息;第一终端根据配置信息确定向第二终端传输第一HARQ反馈信息;或者,第一终端根据配置信息确定接收第三终端传输的第二HARQ反馈信息,其中,传输第一HARQ反馈信息和传输第二HARQ反馈信息的时间资源相同。
其中,配置信息可以是预配置或系统配置的。
即,当传输第一HARQ反馈信息和接收第二HARQ反馈信息产生碰撞时,第一终端可以根据配置信息来决定,是优先传输第一HARQ反馈信息,还是优先接收第二HARQ反馈信息。
其中,步骤501、503-504可以单独实现成为第一终端侧的实施例,步骤502、505-506可以单独实现成为第二终端侧的实施例。
综上所述,本公开提供的直连通信的反馈信息传输方法,在第一终端确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,第一终端会向第二终端传输HARQ反馈信息,以通过该HARQ反馈信息来指示直连数据在盲重传结束后的接收状态。由于第二终端可能会因为某些原因没有接收到该HARQ反馈信息,所以,第一终端需要以第二盲重传机制向第二终端重传HARQ反馈信息,这样,即使第二终端没有接收到某一次传输的HARQ反馈信息,还可以接收重传的HARQ反馈信息,可以避免第二终端误以为第一终端没有接收到直连数据,而重新以第一盲重传机制向第一终端发送该直连数据,从而浪费网络资源的问题,达到了节省网络资源的效果。
图9是根据一示例性实施例示出的一种直连通信的反馈信息传输装置的框图,该直连通信的反馈信息传输装置应用于图1所示的网络架构中,如图9所示,该直连通信的反馈信息传输装置包括:传输模块910和重传模块920;
该传输模块910,被配置为在确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,向第二终端传输HARQ反馈信息,HARQ反馈信息用于指示直连数据在盲重传结束后的接收状态;
该重传模块920,被配置为以第二盲重传机制向第二终端重传HARQ反馈信息。
综上所述,本公开提供的直连通信的反馈信息传输装置,在第一终端确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,第一终端会向第二终端传输HARQ反馈信息,以通过该HARQ反馈信息来指示直连数据在 盲重传结束后的接收状态。由于第二终端可能会因为某些原因没有接收到该HARQ反馈信息,所以,第一终端需要以第二盲重传机制向第二终端重传HARQ反馈信息,这样,即使第二终端没有接收到某一次传输的HARQ反馈信息,还可以接收重传的HARQ反馈信息,可以避免第二终端误以为第一终端没有接收到直连数据,而重新以第一盲重传机制向第一终端发送该直连数据,从而浪费网络资源的问题,达到了节省网络资源的效果。
图10是根据一示例性实施例示出的一种直连通信的反馈信息传输装置的框图,该直连通信的反馈信息传输装置应用于图1所示的网络架构中,如图10所示,该直连通信的反馈信息传输装置包括:传输模块1010和重传模块1020;
该传输模块1010,被配置为在确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,向第二终端传输HARQ反馈信息,HARQ反馈信息用于指示直连数据在盲重传结束后的接收状态;
该重传模块1020,被配置为以第二盲重传机制向第二终端重传HARQ反馈信息。
在一种可能的实现方式中,该重传模块1020,还被配置为:
确定第一重传时间间隔,第一重传时间间隔用于指示HARQ反馈信息的相邻两次传输之间的时间间隔;
根据第一重传时间间隔向第二终端重传HARQ反馈信息。
在一种可能的实现方式中,该重传模块1020,还被配置为:
获取第一次向第二终端传输HARQ反馈信息的第一资源位置,根据第一资源位置确定第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔;或者,
获取最近一次向第二终端传输HARQ反馈信息的第二资源位置,根据第二资源位置确定第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
在一种可能的实现方式中,该重传模块1020,还被配置为:
获取第一对应关系,第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;
在第一对应关系中查找与获取到的第一资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,该重传模块1020,还被配置为:
获取第二对应关系,第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;
在第二对应关系中查找与获取到的第二资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,该重传模块1020,还被配置为:
获取第二重传时间间隔,第二重传时间间隔用于指示直连数据的相邻两次传输之间的时间间隔;
将第二重传时间间隔确定为第一重传时间间隔。
在一种可能的实现方式中,该重传模块1020,还被配置为:
根据第一重传时间间隔确定重传HARQ反馈信息所使用的资源,资源包括时间资源、频率资源和码资源中的至少一种;
将资源集合划分为至少两个正交的资源子集合;
根据重传的次数,使用至少两个正交的资源子集合中的目标资源子集合中的资源向第二终端重传HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
在一种可能的实现方式中,HARQ反馈信息为第一HARQ反馈信息,该装置还包括:获取模块1030和确定模块1040;
该获取模块1030,被配置为获取配置信息;
该确定模块1040,被配置为根据配置信息确定向第二终端传输第一HARQ反馈信息;或者,根据配置信息确定接收第三终端传输的第二HARQ反馈信息,其中,传输第一HARQ反馈信息和传输第二HARQ反馈信息的时间资源相同。
综上所述,本公开提供的直连通信的反馈信息传输装置,在第一终端确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,第一终端会向第二终端传输HARQ反馈信息,以通过该HARQ反馈信息来指示直连数据在盲重传结束后的接收状态。由于第二终端可能会因为某些原因没有接收到该HARQ反馈信息,所以,第一终端需要以第二盲重传机制向第二终端重传HARQ反馈信息,这样,即使第二终端没有接收到某一次传输的HARQ反馈信息,还可以接收重传的HARQ反馈信息,可以避免第二终端误以为第一终端没有接收到直连数据,而重新以第一盲重传机制向第一终端发送该直连数据,从而浪费网络资源的问题,达到了节省网络资源的效果。
图11是根据一示例性实施例示出的一种直连通信的反馈信息传输装置的框图,该直连通信的反馈信息传输装置应用于图1所示的网络架构中,如图11所示,该直连通信的反馈信息传输装置包括:接收模块1110;
该接收模块1110,被配置为在以第一盲重传机制最后一次向第一终端发送直连数据后,接收第一终端传输的混合自动重传请求HARQ反馈信息,HARQ反馈信息用于指示直连数据在盲重传结束后的接收状态;
该接收模块1110,还被配置为接收第一终端以第二盲重传机制重传的HARQ反馈信息。
在一种可能的实现方式中,该接收模块1110,还被配置为:
确定第一重传时间间隔,第一重传时间间隔用于指示HARQ反馈信息的相邻两次传输之间的时间间隔;
根据第一重传时间间隔接收第一终端重传的HARQ反馈信息。
在一种可能的实现方式中,该接收模块1110,还被配置为:
获取第一次接收第一终端传输的HARQ反馈信息的第一资源位置,根据第一资源位置确定第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔;或者,
获取最近一次接收第一终端传输的HARQ反馈信息的第二资源位置,根据第二资源位置确定第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
在一种可能的实现方式中,该接收模块1110,还被配置为:
获取第一对应关系,第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;
在第一对应关系中查找与获取到的第一资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,该接收模块1110,还被配置为:
获取第二对应关系,第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;
在第二对应关系中查找与获取到的第二资源位置对应的第一重传时间间隔。
在一种可能的实现方式中,该接收模块1110,还被配置为:
获取第二重传时间间隔,第二重传时间间隔用于指示直连数据的相邻两次传输之间的时间间隔;
将第二重传时间间隔确定为第一重传时间间隔。
在一种可能的实现方式中,该接收模块1110,还被配置为:
根据第一重传时间间隔确定重传HARQ反馈信息所使用的资源集合,资源集合包括时间资源、频率资源和码资源中的至少一种;
将资源集合划分为至少两个正交的资源子集合;
根据重传的次数,使用至少两个正交的资源子集合中的目标资源子集合中的资源接收第一终端重传的HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
综上所述,本公开提供的直连通信的反馈信息传输装置,在以第一盲重传机制最后一次向第一终端发送直连数据后,第二终端会接收第一终端传输的HARQ反馈信息,以通过该HARQ反馈信息来指示直连数据在盲重传结束后的接收状态。由于第二终端可能会因为某些原因没有接收到该HARQ反馈信息,所以,第一终端需要以第二盲重传机制向第二终端重传HARQ反馈信息,这样,即使第二终端没有接收到某一次传输的HARQ反馈信息,还可以接收重传的HARQ反馈信息,可以避免第二终端误以为第一终端没有接收到直连数据,而重新以第一盲重传机制向第一终端发送该直连数据,从而浪费网络资源的问题,达到了节省网络资源的效果。
需要说明的一点是,上述实施例提供的装置在实现其功能时,仅以上述各个功能模块的划分进行举例说明,实际应用中,可以根据实际需要而将上述功能分配由不同的功能模块完成,即将设备的内容结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。
关于上述实施例中的装置,其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述,此处将不做详细阐述说明。
本公开一示例性实施例提供了一种第一终端,能够实现本公开提供的直连通信的反馈信息传输方法,该第一终端包括:处理器、用于存储处理器可执行信令的存储器;
其中,处理器被配置为:
在确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后, 向第二终端传输HARQ反馈信息,HARQ反馈信息用于指示直连数据在盲重传结束后的接收状态;
以第二盲重传机制向第二终端重传HARQ反馈信息。
本公开一示例性实施例提供了一种第二终端,能够实现本公开提供的直连通信的反馈信息传输方法,该第二终端包括:处理器、用于存储处理器可执行信令的存储器;
其中,处理器被配置为:
在以第一盲重传机制最后一次向第一终端发送直连数据后,接收第一终端传输的混合自动重传请求HARQ反馈信息,HARQ反馈信息用于指示直连数据在盲重传结束后的接收状态;
接收第一终端以第二盲重传机制重传的HARQ反馈信息。
图12是根据一示例性实施例示出的一种用于直连通信的反馈信息传输的装置1200的框图。例如,装置1200可以是移动电话,计算机,数字广播终端,消息收发设备,游戏控制台,平板设备,医疗设备,健身设备,个人数字助理等。其中,装置1200可以是第一终端,也可以是第二终端。
参照图12,装置1200可以包括以下一个或多个组件:处理组件1202,存储器1204,电源组件1206,多媒体组件1208,音频组件1210,输入/输出(I/O)的接口1212,传感器组件1214,以及通信组件1216。
处理组件1202通常控制装置1200的整体操作,诸如与显示,电话呼叫,数据通信,相机操作和记录操作相关联的操作。处理元件1202可以包括一个或多个处理器1220来执行指令,以完成上述的方法的全部或部分步骤。此外,处理组件1202可以包括一个或多个模块,便于处理组件1202和其他组件之间的交互。例如,处理部件1202可以包括多媒体模块,以方便多媒体组件1208和处理组件1202之间的交互。
存储器1204被配置为存储各种类型的数据以支持在设备1200的操作。这些数据的示例包括用于在装置1200上操作的任何应用程序或方法的指令,联系人数据,电话簿数据,消息,图片,视频等。存储器1204可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,如静态随机存取存储器(SRAM),电可擦除可编程只读存储器(EEPROM),可擦除可编程只读存储 器(EPROM),可编程只读存储器(PROM),只读存储器(ROM),磁存储器,快闪存储器,磁盘或光盘。
电力组件1206为装置1200的各种组件提供电力。电力组件1206可以包括电源管理系统,一个或多个电源,及其他与为装置1200生成、管理和分配电力相关联的组件。
多媒体组件1208包括在所述装置1200和用户之间的提供一个输出接口的屏幕。在一些实施例中,屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板,屏幕可以被实现为触摸屏,以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界,而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中,多媒体组件1208包括一个前置摄像头和/或后置摄像头。当设备1200处于操作模式,如拍摄模式或视频模式时,前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件1210被配置为输出和/或输入音频信号。例如,音频组件1210包括一个麦克风(MIC),当装置1200处于操作模式,如呼叫模式、记录模式和语音识别模式时,麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器1204或经由通信组件1216发送。在一些实施例中,音频组件1210还包括一个扬声器,用于输出音频信号。
I/O接口1212为处理组件1202和外围接口模块之间提供接口,上述外围接口模块可以是键盘,点击轮,按钮等。这些按钮可包括但不限于:主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件1214包括一个或多个传感器,用于为装置1200提供各个方面的状态评估。例如,传感器组件1214可以检测到设备1200的打开/关闭状态,组件的相对定位,例如所述组件为装置1200的显示器和小键盘,传感器组件1214还可以检测装置1200或装置1200一个组件的位置改变,用户与装置1200接触的存在或不存在,装置1200方位或加速/减速和装置1200的温度变化。传感器组件1214可以包括接近传感器,被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件1214还可以包括光传感器,如CMOS或CCD图像传感器,用于在成像应用中使用。在一些实施例中,该传感器组件1214还可以包 括加速度传感器,陀螺仪传感器,磁传感器,压力传感器或温度传感器。
通信组件1216被配置为便于装置1200和其他设备之间有线或无线方式的通信。装置1200可以接入基于通信标准的无线网络,如WiFi,2G或3G,或它们的组合。在一个示例性实施例中,通信部件1216经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中,所述通信部件1216还包括近场通信(NFC)模块,以促进短程通信。
在示例性实施例中,装置1200可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现,用于执行上述方法。
在示例性实施例中,还提供了一种包括指令的非临时性计算机可读存储介质,例如包括指令的存储器1204,上述指令可由装置1200的处理器1220执行以完成上述方法。例如,所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
一种非临时性计算机可读存储介质,当所述存储介质中的指令由移动终端的处理器执行时,使得移动终端能够执行上述直连通信的反馈信息传输方法。
本公开一示例性实施例还提供了一种直连通信的反馈信息传输系统,所述系统包括第一终端和第二终端;
所述第一终端包括如图9和10所示实施例提供的直连通信的反馈信息传输装置;
所述第二终端包括如图11所示实施例提供的直连通信的反馈信息传输装置。
本公开一示例性实施例还提供了一种直连通信的反馈信息传输系统,所述反馈信息传输系统包括第一终端和第二终端;
所述第一终端和所述第二终端为如图12所示实施例提供的终端。
本公开一示例性实施例提供了一种计算机可读存储介质,所述存储介质中存储有至少一条指令、至少一段程序、代码集或指令集,所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现如上 所述的直连通信的反馈信息传输方法。
本领域技术人员在考虑说明书及实践这里的公开后,将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的,本公开的真正范围和精神由下面的权利要求指出。
应当理解的是,本公开并不局限于上面已经描述并在附图中示出的精确结构,并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (35)

  1. 一种直连通信的反馈信息传输方法,其特征在于,所述方法包括:
    在第一终端确定第二终端以第一盲重传机制最后一次向所述第一终端发送直连数据后,所述第一终端向所述第二终端传输混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
    所述第一终端以第二盲重传机制向所述第二终端重传所述HARQ反馈信息。
  2. 根据权利要求1所述的方法,其特征在于,所述第一终端以第二盲重传机制向所述第二终端重传所述HARQ反馈信息,包括:
    所述第一终端确定第一重传时间间隔,所述第一重传时间间隔用于指示所述HARQ反馈信息的相邻两次传输之间的时间间隔;
    所述第一终端根据所述第一重传时间间隔向所述第二终端重传所述HARQ反馈信息。
  3. 根据权利要求2所述的方法,其特征在于,所述第一终端确定第一重传时间间隔,包括:
    所述第一终端获取第一次向所述第二终端传输所述HARQ反馈信息的第一资源位置,根据所述第一资源位置确定所述第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔;或者,
    所述第一终端获取最近一次向所述第二终端传输所述HARQ反馈信息的第二资源位置,根据所述第二资源位置确定所述第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
  4. 根据权利要求3所述的方法,其特征在于,所述根据所述第一资源位置确定所述第一重传时间间隔,包括:
    所述第一终端获取第一对应关系,所述第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;
    所述第一终端在所述第一对应关系中查找与获取到的所述第一资源位置对应的第一重传时间间隔。
  5. 根据权利要求3所述的方法,其特征在于,所述根据所述第二资源位置确定所述第一重传时间间隔,包括:
    所述第一终端获取第二对应关系,所述第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;
    所述第一终端在所述第二对应关系中查找与获取到的所述第二资源位置对应的第一重传时间间隔。
  6. 根据权利要求2所述的方法,其特征在于,所述第一终端确定第一重传时间间隔,包括:
    所述第一终端获取第二重传时间间隔,所述第二重传时间间隔用于指示所述直连数据的相邻两次传输之间的时间间隔;
    所述第一终端将所述第二重传时间间隔确定为第一重传时间间隔。
  7. 根据权利要求2至6任一项所述的方法,其特征在于,所述第一终端根据所述第一重传时间间隔向所述第二终端重传所述HARQ反馈信息,包括:
    所述第一终端根据所述第一重传时间间隔确定重传所述HARQ反馈信息所使用的资源集合,所述资源集合包括时间资源、频率资源和码资源中的至少一种;
    所述第一终端将所述资源集合划分为至少两个正交的资源子集合;
    所述第一终端根据重传的次数,使用所述至少两个正交的资源子集合中的目标资源子集合中的资源向所述第二终端重传所述HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
  8. 根据权利要求1所述的方法,其特征在于,所述HARQ反馈信息为第一HARQ反馈信息,所述方法还包括:
    所述第一终端获取配置信息;
    所述第一终端根据所述配置信息确定向所述第二终端传输所述第一HARQ反馈信息;或者,所述第一终端根据所述配置信息确定接收第三终端传输的第二HARQ反馈信息,其中,传输所述第一HARQ反馈信息和传输所述第二HARQ 反馈信息的时间资源相同。
  9. 一种直连通信的反馈信息传输方法,其特征在于,所述方法包括:
    在第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,所述第二终端接收所述第一终端传输的混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
    所述第二终端接收所述第一终端以第二盲重传机制重传的所述HARQ反馈信息。
  10. 根据权利要求9所述的方法,其特征在于,所述第二终端接收所述第一终端以第二盲重传机制重传的所述HARQ反馈信息,包括:
    所述第二终端确定第一重传时间间隔,所述第一重传时间间隔用于指示所述HARQ反馈信息的相邻两次传输之间的时间间隔;
    所述第二终端根据所述第一重传时间间隔接收所述第一终端重传的所述HARQ反馈信息。
  11. 根据权利要求10所述的方法,其特征在于,所述第二终端确定第一重传时间间隔,包括:
    所述第二终端获取第一次接收所述第一终端传输的所述HARQ反馈信息的第一资源位置,根据所述第一资源位置确定所述第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔;或者,
    所述第二终端获取最近一次接收所述第一终端传输的所述HARQ反馈信息的第二资源位置,根据所述第二资源位置确定所述第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
  12. 根据权利要求11所述的方法,其特征在于,所述根据所述第一资源位置确定所述第一重传时间间隔,包括:
    所述第二终端获取第一对应关系,所述第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;
    所述第二终端在所述第一对应关系中查找与获取到的所述第一资源位置对 应的第一重传时间间隔。
  13. 根据权利要求11所述的方法,其特征在于,所述根据所述第二资源位置确定所述第一重传时间间隔,包括:
    所述第二终端获取第二对应关系,所述第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;
    所述第二终端在所述第二对应关系中查找与获取到的所述第二资源位置对应的第一重传时间间隔。
  14. 根据权利要求10所述的方法,其特征在于,所述第二终端确定第一重传时间间隔,包括:
    所述第二终端获取第二重传时间间隔,所述第二重传时间间隔用于指示所述直连数据的相邻两次传输之间的时间间隔;
    所述第二终端将所述第二重传时间间隔确定为第一重传时间间隔。
  15. 根据权利要求10至14任一项所述的方法,其特征在于,所述第二终端根据所述第一重传时间间隔接收所述第一终端重传的所述HARQ反馈信息,包括:
    所述第二终端根据所述第一重传时间间隔确定重传所述HARQ反馈信息所使用的资源集合,所述资源集合包括时间资源、频率资源和码资源中的至少一种;
    所述第二终端将所述资源集合划分为至少两个正交的资源子集合;
    所述第二终端根据重传的次数,使用所述至少两个正交的资源子集合中的目标资源子集合中的资源接收所述第一终端重传的所述HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
  16. 一种直连通信的反馈信息传输装置,其特征在于,所述装置包括:
    传输模块,被配置为在确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,向所述第二终端传输混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
    重传模块,被配置为以第二盲重传机制向所述第二终端重传所述HARQ反馈信息。
  17. 根据权利要求16所述的装置,其特征在于,所述重传模块,还被配置为:
    确定第一重传时间间隔,所述第一重传时间间隔用于指示所述HARQ反馈信息的相邻两次传输之间的时间间隔;
    根据所述第一重传时间间隔向所述第二终端重传所述HARQ反馈信息。
  18. 根据权利要求17所述的装置,其特征在于,所述重传模块,还被配置为:
    获取第一次向所述第二终端传输所述HARQ反馈信息的第一资源位置,根据所述第一资源位置确定所述第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔;或者,
    获取最近一次向所述第二终端传输所述HARQ反馈信息的第二资源位置,根据所述第二资源位置确定所述第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
  19. 根据权利要求18所述的装置,其特征在于,所述重传模块,还被配置为:
    获取第一对应关系,所述第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;
    在所述第一对应关系中查找与获取到的所述第一资源位置对应的第一重传时间间隔。
  20. 根据权利要求18所述的装置,其特征在于,所述重传模块,还被配置为:
    获取第二对应关系,所述第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;
    在所述第二对应关系中查找与获取到的所述第二资源位置对应的第一重传 时间间隔。
  21. 根据权利要求17所述的装置,其特征在于,所述重传模块,还被配置为:
    获取第二重传时间间隔,所述第二重传时间间隔用于指示所述直连数据的相邻两次传输之间的时间间隔;
    将所述第二重传时间间隔确定为第一重传时间间隔。
  22. 根据权利要求17至21任一项所述的装置,其特征在于,所述重传模块,还被配置为:
    根据所述第一重传时间间隔确定重传所述HARQ反馈信息所使用的资源集合,所述资源集合包括时间资源、频率资源和码资源中的至少一种;
    将所述资源集合划分为至少两个正交的资源子集合;
    根据重传的次数,使用所述至少两个正交的资源子集合中的目标资源子集合中的资源向所述第二终端重传所述HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
  23. 根据权利要求16所述的装置,其特征在于,所述HARQ反馈信息为第一HARQ反馈信息,所述装置还包括:
    获取模块,被配置为获取配置信息;
    确定模块,被配置为根据所述配置信息确定向所述第二终端传输所述第一HARQ反馈信息;或者,根据所述配置信息确定接收第三终端传输的第二HARQ反馈信息,其中,传输所述第一HARQ反馈信息和传输所述第二HARQ反馈信息的时间资源相同。
  24. 一种直连通信的反馈信息传输装置,其特征在于,所述装置包括:
    接收模块,被配置为在以第一盲重传机制最后一次向第一终端发送直连数据后,接收所述第一终端传输的混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
    所述接收模块,还被配置为接收所述第一终端以第二盲重传机制重传的所 述HARQ反馈信息。
  25. 根据权利要求24所述的装置,其特征在于,所述接收模块,还被配置为:
    确定第一重传时间间隔,所述第一重传时间间隔用于指示所述HARQ反馈信息的相邻两次传输之间的时间间隔;
    根据所述第一重传时间间隔接收所述第一终端重传的所述HARQ反馈信息。
  26. 根据权利要求25所述的装置,其特征在于,所述接收模块,还被配置为:
    获取第一次接收所述第一终端传输的所述HARQ反馈信息的第一资源位置,根据所述第一资源位置确定所述第一重传时间间隔,其中,不同的第一资源位置对应于不同的第一重传时间间隔;或者,
    获取最近一次接收所述第一终端传输的所述HARQ反馈信息的第二资源位置,根据所述第二资源位置确定所述第一重传时间间隔,其中,不同的第二资源位置对应于不同的第一重传时间间隔。
  27. 根据权利要求26所述的装置,其特征在于,所述接收模块,还被配置为:
    获取第一对应关系,所述第一对应关系用于指示第一资源位置与第一重传时间间隔之间的关系;
    在所述第一对应关系中查找与获取到的所述第一资源位置对应的第一重传时间间隔。
  28. 根据权利要求26所述的装置,其特征在于,所述接收模块,还被配置为:
    获取第二对应关系,所述第二对应关系用于指示第二资源位置与第一重传时间间隔之间的关系;
    在所述第二对应关系中查找与获取到的所述第二资源位置对应的第一重传 时间间隔。
  29. 根据权利要求25所述的装置,其特征在于,所述接收模块,还被配置为:
    获取第二重传时间间隔,所述第二重传时间间隔用于指示所述直连数据的相邻两次传输之间的时间间隔;
    将所述第二重传时间间隔确定为第一重传时间间隔。
  30. 根据权利要求25至29任一项所述的装置,其特征在于,所述接收模块,还被配置为:
    根据所述第一重传时间间隔确定重传所述HARQ反馈信息所使用的资源集合,所述资源集合包括时间资源、频率资源和码资源中的至少一种;
    将所述资源集合划分为至少两个正交的资源子集合;
    根据重传的次数,使用所述至少两个正交的资源子集合中的目标资源子集合中的资源接收所述第一终端重传的所述HARQ反馈信息,其中,不同次数的重传对应于不同的目标资源子集合。
  31. 一种第一终端,其特征在于,所述第一终端包括:
    处理器;
    用于存储处理器可执行指令的存储器;
    其中,所述处理器被配置为:
    在确定第二终端以第一盲重传机制最后一次向第一终端发送直连数据后,向所述第二终端传输混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
    以第二盲重传机制向所述第二终端重传所述HARQ反馈信息。
  32. 一种第二终端,其特征在于,所述第二终端包括:
    处理器;
    用于存储处理器可执行指令的存储器;
    其中,所述处理器被配置为:
    在以第一盲重传机制最后一次向第一终端发送直连数据后,接收所述第一终端传输的混合自动重传请求HARQ反馈信息,所述HARQ反馈信息用于指示所述直连数据在盲重传结束后的接收状态;
    接收所述第一终端以第二盲重传机制重传的所述HARQ反馈信息。
  33. 一种直连通信的反馈信息传输系统,其特征在于,所述系统包括第一终端和第二终端;
    所述第一终端包括如权利要求16至23任一所述的数据传输装置;
    所述第二终端包括如权利要求24至30任一所述的数据传输装置。
  34. 一种直连通信的反馈信息传输系统,其特征在于,所述系统包括第一终端和第二终端;
    所述第一终端如权利要求31所述的第一终端;
    所述第二终端如权利要求32所述的第二终端。
  35. 一种计算机可读存储介质,其特征在于,所述存储介质中存储有至少一条指令、至少一段程序、代码集或指令集,所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现权利要求1至15任一所述的直连通信的反馈信息传输方法。
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