WO2020077568A1 - 直连通信的时频资源竞争方法、装置、设备及系统 - Google Patents

直连通信的时频资源竞争方法、装置、设备及系统 Download PDF

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Publication number
WO2020077568A1
WO2020077568A1 PCT/CN2018/110666 CN2018110666W WO2020077568A1 WO 2020077568 A1 WO2020077568 A1 WO 2020077568A1 CN 2018110666 W CN2018110666 W CN 2018110666W WO 2020077568 A1 WO2020077568 A1 WO 2020077568A1
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Prior art keywords
contention
frequency resource
time
target time
frequency
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PCT/CN2018/110666
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English (en)
French (fr)
Inventor
赵群
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北京小米移动软件有限公司
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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 PCT/CN2018/110666 priority Critical patent/WO2020077568A1/zh
Priority to US17/284,233 priority patent/US20210321449A1/en
Priority to CN201880001679.2A priority patent/CN109496440B/zh
Publication of WO2020077568A1 publication Critical patent/WO2020077568A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present disclosure relates to the field of communications, and in particular to a method, device, equipment, and system for direct-frequency communication time-frequency resource competition.
  • C-V2X Cellular-based V2X based on the evolution of 3G / 4G / 5G and other cellular network communication technologies is suitable for communication between in-vehicle equipment and user equipment located near the geographic location of the vehicle.
  • a V2X direct-connect communication system based on a Long-Term Evolution (LTE) system in order to avoid mutual interference when multiple adjacent user equipments periodically send data, periodic resource reservation combined with channel sensing technology is usually used To reduce interference.
  • User equipment A needs to obtain the control information sent by other user equipment B, and based on the transmission cycle and resource occupation information contained in the control information, predict the time-frequency resources and interference for user equipment B to send data next time, so as to avoid using Time-frequency resources pre-occupied by device B.
  • some V2X applications send data acyclically or randomly. For these data, the user equipment A cannot predict the interference and collision when the user equipment B sends data next time based on the data sent by the user equipment B last time, resulting in that the above solution cannot be effectively used.
  • the embodiments of the present disclosure provide a method, device, equipment and system for time-frequency resource competition of direct connection communication, which can solve that in a 5G NR system, some V2X applications send data acyclically or randomly. For these data, user equipment A cannot predict the interference and collision problems when the user equipment B sends data next time based on the data sent by the user equipment B last time.
  • the technical solution is as follows:
  • a method for contention of time-frequency resources of direct connection communication includes:
  • the first terminal determines the target time-frequency resource unit among n time-frequency resource units, where n is a positive integer;
  • the first terminal determines a contention resource group corresponding to the target time-frequency resource unit, the time-domain position of the contention resource group is earlier than the time-domain position of the target time-frequency resource unit, and the contention resource group includes at least two contention time-frequency resource units;
  • the first terminal sends the first contention signal on the first contention time-frequency resource unit of the contention resource group;
  • the first terminal monitors other contention time-frequency resource units in the contention resource group except the first contention time-frequency resource unit; according to the monitoring result on the contention resource group, it is determined whether the target time-frequency resource unit has successfully competed.
  • the first terminal determines whether the target time-frequency resource unit successfully competes according to the monitoring result on the competing resource group, including:
  • the target time-frequency resource units are m target time-frequency resource units located in the same time domain position, each target time-frequency resource unit corresponds to its own competitive resource group, and m is an integer greater than 1;
  • the first terminal determines whether the target time-frequency resource unit successfully competes according to the monitoring result on the competing resource group, including:
  • any target time-frequency resource unit of the m target time-frequency resource units when the monitoring result on the corresponding competing resource group is that the first contention signal meets the competition success condition, it is determined to compete with the m target time-frequency resource units success.
  • the target time-frequency resource units are m target time-frequency resource units located in the same time domain position, each target time-frequency resource unit corresponds to its respective competitive resource group, and m is an integer greater than 1;
  • the first terminal determines whether to successfully compete for the target time-frequency resource unit according to the monitoring result on the competing resource group, including:
  • the monitoring result of k first target time-frequency resource units on the corresponding competing resource group is that the first competition signal meets the competition success condition, and mk second target time-frequency resource units are in
  • the monitoring result on the corresponding competition resource group is that the first competition signal does not meet the competition success condition, it is determined that the k first target time-frequency resource units compete successfully, and k is a positive integer less than m.
  • the target time-frequency resource units are m target time-frequency resource units located in the same time domain position and continuous in the frequency domain position, each target time-frequency resource unit corresponds to its own competing resource group, and m is greater than An integer of 1;
  • the first terminal determines whether to successfully compete for the target time-frequency resource unit according to the monitoring result on the competing resource group, including:
  • the monitoring result of k first target time-frequency resource units on the corresponding competing resource group is that the first competition signal meets the competition success condition, and mk second target time-frequency resource units are in
  • the monitoring result on the corresponding competition resource group is that the first competition signal does not meet the competition success condition
  • the conditions for successful competition include:
  • the second contention signal is monitored on the second contention time-frequency resource unit among the other contention time-frequency resource units, and the contention units of the contention time-frequency resource occupied by the first contention signal and the second contention signal conform to the preset time domain position relationship; And / or, the second contention signal is not heard in other contention time-frequency resource units.
  • At least two contention time-frequency resource units in the same contention resource group have the same frequency domain position and different time domain positions
  • the preset time domain position relationship includes: the time domain position of the first contention time-frequency resource unit is earlier than the time domain position of the second contention time-frequency resource unit.
  • the i-th target time-frequency resource unit and the j-th target time-frequency resource unit exist in the m target time-frequency resource units; the i-th target time-frequency resource unit corresponds to the i-th contention resource group , The jth target time-frequency resource unit corresponds to the jth contention resource group, i, j is a positive integer less than or equal to m;
  • the first contention signal in the i-th contention resource group and the first contention signal in the j-th contention resource group respectively correspond to the same time domain position of the first contention time-frequency resource unit.
  • the target time-frequency resource unit and the corresponding competing resource group are located in different frequency domain positions, and a target time-frequency resource unit in the same time domain position is in a different frequency domain position, and a A contention resource group corresponding to the target time-frequency resource unit is in a different frequency domain position, a is a positive integer less than or equal to m; or, the target time-frequency resource unit and the corresponding contention resource group are located in the same frequency domain position, In addition, a target time-frequency resource unit in the same time-domain position is in a different frequency-domain position, and a contention resource group corresponding to the a target time-frequency resource unit is in a different frequency-domain position.
  • a direct-frequency communication time-frequency resource contention apparatus characterized in that the apparatus includes:
  • the first determining module is configured to determine a target time-frequency resource unit among n time-frequency resource units, where n is a positive integer;
  • the second determining module is configured to determine a contention resource group corresponding to the target time-frequency resource unit, the time-domain position of the contention resource group is earlier than the time-domain position of the target time-frequency resource unit, and the contention resource group includes at least two contention time-frequency Resource unit
  • the sending module is configured to send the first contention signal on the first contention time-frequency resource unit of the contention resource group;
  • the processing module is configured to monitor other contention time-frequency resource units except the first contention time-frequency resource unit in the contention resource group; according to the monitoring result on the contention resource group, determine whether the target time-frequency resource unit competes successfully.
  • the processing module is configured to determine that the competition for the target time-frequency resource unit is successful when the monitoring result on the competing resource group is that the first contention signal meets the competition success condition.
  • the target time-frequency resource units are m target time-frequency resource units located in the same time domain position, each target time-frequency resource unit corresponds to its own competitive resource group, and m is an integer greater than 1;
  • the processing module is configured to determine, for any target time-frequency resource unit of m target time-frequency resource units, when the monitoring result on the corresponding competing resource group is that the first competition signal meets the competition success condition, determine the number of m The target time-frequency resource unit competes successfully.
  • the target time-frequency resource units are m target time-frequency resource units located in the same time domain position, each target time-frequency resource unit corresponds to its respective competitive resource group, and m is an integer greater than 1;
  • the processing module is configured to, for m target time-frequency resource units, the monitoring result of k first target time-frequency resource units on the corresponding competitive resource group is that the first competitive signal meets the competition success condition, and mk second When the monitoring result of the target time-frequency resource unit on the corresponding competition resource group is that the first competition signal does not meet the competition success condition, it is determined that k first target time-frequency resource units successfully compete, and k is a positive integer less than m.
  • the target time-frequency resource units are m target time-frequency resource units located in the same time domain position and continuous in the frequency domain position, each target time-frequency resource unit corresponds to its own competing resource group, and m is greater than An integer of 1;
  • the processing module is configured to, for m target time-frequency resource units, the monitoring result of k first target time-frequency resource units on the corresponding competitive resource group is that the first competitive signal meets the competition success condition, and mk second
  • the monitoring result of the target time-frequency resource unit on the corresponding contention resource group is that the first contention signal does not meet the contention success condition
  • the conditions for successful competition include:
  • the second contention signal is monitored on the second contention time-frequency resource unit among the other contention time-frequency resource units, and the contention units of the contention time-frequency resource occupied by the first contention signal and the second contention signal conform to the preset time domain position relationship; And / or, the second contention signal is not heard in other contention time-frequency resource units.
  • At least two contention time-frequency resource units in the same contention resource group have the same frequency domain position and different time domain positions
  • the preset time domain position relationship includes:
  • the time domain position of the first contention time-frequency resource unit is earlier than the time domain position of the second contention time-frequency resource unit.
  • the i-th target time-frequency resource unit and the j-th target time-frequency resource unit exist in the m target time-frequency resource units; the i-th target time-frequency resource unit corresponds to the i-th contention resource group , The jth target time-frequency resource unit corresponds to the jth contention resource group, i, j is a positive integer less than or equal to m;
  • the first contention signal in the i-th contention resource group and the first contention signal in the j-th contention resource group respectively correspond to the same time domain position of the first contention time-frequency resource unit.
  • the target time-frequency resource unit and the corresponding competing resource group are located in different frequency domain positions, and a target time-frequency resource unit in the same time domain position is in a different frequency domain position, and a A contention resource group corresponding to the target time-frequency resource unit is in a different frequency domain position, a is a positive integer less than or equal to m; or, the target time-frequency resource unit and the corresponding contention resource group are located in the same frequency domain position, In addition, a target time-frequency resource unit in the same time-domain position is in a different frequency-domain position, and a contention resource group corresponding to the a target time-frequency resource unit is in a different frequency-domain position.
  • a terminal including:
  • Transceiver connected to the processor
  • Memory for storing processor executable instructions
  • the processor is configured to load and execute executable instructions to implement any of the above-mentioned direct-frequency communication contention methods.
  • 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 the instruction set is loaded and executed by the processor to implement any of the above-mentioned direct-frequency communication contention methods for direct communication.
  • the first terminal determines the target time-frequency resource unit among the n time-frequency resource units and the contention resource group corresponding to the target time-frequency resource unit, and sends the first contention signal on the first contention time-frequency resource unit of the contention resource group , Based on the monitoring results on the competing resource group, determine whether the target time-frequency resource unit successfully competes, ensuring that each competition process is dynamically determined based on the competing resource group, and does not need to be predicted based on periodic information, even Terminals with non-periodic data transmission requirements can also compete dynamically when data needs to be transmitted, avoiding collision problems during direct communication.
  • Fig. 1 is a schematic diagram of a communication system according to an exemplary embodiment
  • Fig. 2 is a schematic diagram showing a division of a time-frequency resource unit and a contention resource group according to an exemplary embodiment
  • Fig. 3 is a flow chart showing a method for contention of time-frequency resources of direct communication according to an exemplary embodiment
  • Fig. 4 is a schematic diagram showing a correspondence between a target time-frequency resource unit and a contention resource group according to an exemplary embodiment
  • Fig. 5 is a flow chart showing a method for contention of time-frequency resources of direct connection communication according to an exemplary embodiment
  • Fig. 6 is a schematic diagram of a location of a target time-frequency resource unit according to an exemplary embodiment
  • Fig. 7 is a schematic diagram showing a correspondence between a target time-frequency resource unit and a contention resource group according to an exemplary embodiment
  • Fig. 8 is a schematic diagram of a time domain position of a first contention signal according to an exemplary embodiment
  • Fig. 9 is a flowchart illustrating a method for contention of time-frequency resources of direct communication according to an exemplary embodiment
  • Fig. 10 is a schematic diagram showing a correspondence between a target time-frequency resource unit and a contention resource group according to an exemplary embodiment
  • Fig. 11 is a schematic diagram showing a correspondence between a target time-frequency resource unit and a contention resource group according to an exemplary embodiment
  • Fig. 12 is a schematic diagram showing a correspondence between a time-frequency resource unit and a contention resource group according to an exemplary embodiment
  • Fig. 13 is a schematic diagram showing a correspondence between a time-frequency resource unit and a contention resource group according to an exemplary embodiment
  • Fig. 14 is a schematic diagram showing a correspondence between a time-frequency resource unit and a contention resource group according to an exemplary embodiment
  • Fig. 15 is a schematic diagram showing another correspondence between time-frequency resource units and contention resource groups according to an exemplary embodiment
  • Fig. 16 is a block diagram of a device for competing for time-frequency resources of direct communication according to an exemplary embodiment
  • Fig. 17 is a block diagram of a terminal according to an exemplary embodiment.
  • FIG. 1 shows a schematic diagram of a communication system provided by an exemplary embodiment of the present disclosure.
  • Direct link communication can be applied to a communication system based on Internet of Vehicles.
  • the communication system includes a terminal 100, a terminal 120, a terminal 140, a terminal 160, and a terminal 180.
  • terminal 100, terminal 120, terminal 140, terminal 160, and terminal 180 are geographically close terminals. During data transmission, at least two terminals compete for the same time-frequency resource for data transmission. The number and type are limited.
  • the terminal 100 includes at least one of a pedestrian 101, a vehicle 102, and an infrastructure 103.
  • the pedestrian 101 generally refers to a pedestrian-carrying electronic device with mobile communication capabilities, such as a mobile phone and a wearable device.
  • wearable devices include smart bracelets, smart watches and smart rings.
  • the vehicle 102 includes a vehicle having a communication function.
  • the infrastructure 103 includes all infrastructures encountered during the driving of vehicles, including traffic lights, bus stops, buildings, tunnels and other building facilities.
  • Direct connection communication is an aperiodic data transmission scenario in many cases. Therefore, the embodiments of the present disclosure hope to provide a collision avoidance scheme based on competition. First, several terms involved in the embodiments of the present disclosure are introduced:
  • Time-frequency resource unit for data transmission Time-domain unit and / or frequency-domain unit for transmitting directly connected communication data.
  • resource allocation is performed in units of time-frequency resource units.
  • a time-domain resource unit is a slot in the time domain and a frequency-domain subchannel in the frequency domain.
  • the frequency domain sub-channel refers to the carrier bandwidth is divided into [N / K] sub-channels according to the frequency from low to high in the manner of each group of k resource blocks (Resource) Block (RB) in the frequency domain .
  • Resource resource blocks
  • RB resource blocks
  • Competing resource group used to carry the time-frequency resource of the contention signal of each terminal in the process of competing for the same time-frequency resource unit.
  • the contention resource groups correspond to the time-frequency resource units one by one. Each time-frequency resource unit has its own corresponding contention resource group. The time-domain position of the contention resource group is earlier than the time-domain position of the time-frequency resource unit.
  • Each contention resource group includes at least two contention time-frequency resource units. Each contention time-frequency resource unit can occupy a very small amount of time-frequency resources.
  • each contention time-frequency resource unit is a resource unit (Resource Element, RE), or each contention time-frequency resource unit can be used to transmit a specific signal Sequence, or specific control information, or specific data; for example, transmission of direct link control information including data transmission scheduling and reception of necessary information.
  • Specific in the present disclosure refers to the agreement, the specific signal sequence refers to one or more signal sequences agreed by the agreement; the specific control information refers to the agreement agreement control information; and the specific data refers to the agreement agreement data.
  • FIG. 2 shows a schematic diagram of dividing a time-frequency resource unit and a contention resource group.
  • the time-frequency resource is divided into K time-frequency resource units, numbered as 1 to K.
  • each time-frequency resource unit corresponds to its own contention resource group, for example, the time-frequency resource unit numbered 1 corresponds to the last-to-last row contention resource group, and the time-frequency resource unit numbered 2 corresponds to the second-to-last row
  • the time-frequency resource unit numbered K-1 corresponds to the contention resource group in the second row
  • the time-frequency resource unit numbered K corresponds to the contention resource group in the first row.
  • Different contention resource groups corresponding to different time-frequency resource units in the same time slot n are distributed in different frequency domain positions.
  • Each contention resource group includes 10 resource blocks, which occupy different symbols in the time domain and occupy the same RB position in the frequency domain.
  • FIG. 2 is only a schematic illustration, and does not constitute a limitation on the division manner of the time-frequency resource unit and the contention resource group.
  • FIG. 3 shows a flowchart of a method for contention of time-frequency resources of direct communication provided by an exemplary embodiment of the present disclosure. As shown in FIG. 3, this embodiment is applied as an example in the communication system shown in FIG. 1 by using this method.
  • the method includes:
  • step 301 the first terminal determines that the target time-frequency resource unit is determined among n time-frequency resource units, and n is a positive integer.
  • the first terminal determines one or more target time-frequency resource units among the n time-frequency resource units allowed to be used.
  • the target time-frequency resource unit is the time-frequency resource unit 2 in the time slot n in FIG. 2.
  • the first terminal determines a contention resource group corresponding to the target time-frequency resource unit, the time-domain position of the contention resource group is earlier than the time-domain position of the target time-frequency resource unit, and the contention resource group includes at least two contention time-frequency Resource unit.
  • the time domain position of the contention resource group is earlier than the time domain position of the target time-frequency resource unit.
  • the contention resource group is located in time slot n-M
  • the target time-frequency resource unit is located in time slot n.
  • the contention resource group includes at least two contention time-frequency resource units. At least two contention time-frequency resource units in the same contention resource group have the same frequency domain position and different time domain positions.
  • the contention resource group corresponding to the time-frequency resource unit 2 is 10 resource blocks located in the time slot n-M (a row of RBs with an underlined background in the figure).
  • step 303 the first terminal sends a first contention signal on the first contention time-frequency resource unit of the contention resource group.
  • the first terminal selects any one contention time-frequency resource unit in the contention resource group as the first contention time-frequency resource unit, and sends the first contention signal on the first contention time-frequency resource unit.
  • the first contention signal may be a specific signal sequence, specific control information, or specific data.
  • the first contention signal is direct link control information including user data scheduling information and receiving necessary information.
  • the first contention signal is used to indicate to other terminals that the first terminal is competing to use the target time-frequency resource unit.
  • the first terminal may randomly select the RB in the third symbol (such as an RB with an underlined right background in FIG. 2) among the 10 RBs in the contention resource group as the first contention time-frequency resource Unit and send the first contention signal on the RB in the third symbol.
  • the RB in the third symbol such as an RB with an underlined right background in FIG. 2
  • the first terminal may randomly select the RB in the third symbol (such as an RB with an underlined right background in FIG. 2) among the 10 RBs in the contention resource group as the first contention time-frequency resource Unit and send the first contention signal on the RB in the third symbol.
  • step 304 the first terminal monitors other contention time-frequency resource units in the contention resource group except the first contention time-frequency resource unit;
  • step 305 the first terminal determines whether the contention of the target time-frequency resource unit is successful according to the monitoring result on the contention resource group.
  • the first terminal monitors other contention time-frequency resource units in the contention resource group except the first contention time-frequency resource unit.
  • the first terminal's monitoring result on the contention resource group is that the first contention signal meets the contention success condition
  • the first The terminal determines that the target time-frequency resource unit corresponding to the contention resource group successfully competes.
  • the conditions for successful competition include but are not limited to any of the following two:
  • the second contention signal (one or more) is monitored on other contention time-frequency resource units of the contention resource group, and the time-domain position of the contention-time resource unit occupied by the first contention signal and the second contention signal respectively Meet the preset time domain position relationship.
  • the second contention signal is not heard on other contention time-frequency resource units of the contention resource group.
  • the first terminal may repeat the above steps to continue to compete for the target time-frequency resource unit.
  • the method for time-frequency resource competition of direct connection communication determines the target time-frequency resource unit among the n time-frequency resource units and the contention resource corresponding to the target time-frequency resource unit through the first terminal Group, send the first competition signal on the first competition time-frequency resource unit of the competition resource group, and determine whether to successfully compete with the target time-frequency resource unit according to the monitoring result on the competition resource group, ensuring that each competition process is based on competition
  • the resource group is dynamically determined and does not need to be predicted based on periodic information. Even terminals with acyclic data transmission needs can compete dynamically when data needs to be transmitted, avoiding collisions during direct communication problem.
  • the competition success condition includes any one of the following two conditions:
  • the second contention signal is monitored on the second contention time-frequency resource unit among the other contention time-frequency resource units, and the contention units of the contention time-frequency resource occupied by the first contention signal and the second contention signal conform to the preset time domain Positional relationship.
  • the first contention time-frequency resource unit and the second contention time-frequency resource unit conforming to the preset time-domain position relationship include: the time-domain position of the first contention time-frequency resource unit is earlier than the second contention time-frequency The time domain position of the resource unit, as shown in FIG.
  • the corresponding contention resource group includes 10 contention time-frequency resource units, and the contention time of the first contention signal randomly sent by the first terminal
  • the time domain position of the frequency resource unit (the third symbol) is earlier than the time domain position of the contention time frequency resource unit where the second contention signal randomly sent by the second terminal is located (the sixth symbol), and is earlier than the third
  • the time domain position of the contention time-frequency resource unit where the third contention signal randomly sent by the terminal is located (the eighth symbol) then the first terminal determines that the competition for the target time-frequency resource unit 2 is successful.
  • the second terminal and the second The second terminal gives up selecting the target time-frequency resource unit 2.
  • the first contention signal, the second contention signal and the third contention signal may be a specific signal sequence, specific control information or specific data, optionally, the first contention signal, the second contention signal or the third contention signal include the user Data scheduling information and direct link control information to receive necessary information.
  • condition is applicable to a scenario where at least two terminals compete for transmission of the same time-frequency resource unit.
  • the second contention signal is not heard in other contention time-frequency resource units.
  • the contention resource group corresponding to the target time-frequency resource unit K only the first contention signal sent by the first terminal, and no other terminal sends the second contention signal in the contention resource group, it is also considered The first terminal successfully competes for the target time-frequency resource unit K.
  • the contention success condition provided by this embodiment is transmitted by multiple terminals in the same contention resource group, if the transmission position of the first contention signal is earlier than the transmission position of any second contention signal, Then, the first terminal that sends the first contention signal determines that the contention target time-frequency resource is successful, so that each terminal can determine whether the contention is successful when it listens to the first contention signal in the contention resource group, thereby executing subsequent logic, thereby saving the terminal
  • the required monitoring time improves the competition efficiency of the terminal and avoids unnecessary energy consumption, power consumption and computing resource consumption.
  • the above embodiment is exemplified by taking one target time-frequency resource unit as an example.
  • the first terminal may also compete for more than two target time-frequency resource units simultaneously.
  • FIG. 5 shows a flowchart of a time-frequency resource contention method for direct connection communication provided by an exemplary embodiment of the present disclosure.
  • the method is applied to the communication system shown in FIG. 1 for example.
  • the method includes:
  • the first terminal determines m target time-frequency resource units among n time-frequency resource units, and the m target time-frequency resource units are m target time-frequency resource units located in the same time domain position, each The target time-frequency resource units correspond to their respective competing resource groups, n is a positive integer and m is an integer greater than 1.
  • the m target time-frequency resource units are multiple target time-frequency resource units with the same time domain position and continuous frequency domain position, or, as shown in FIG. 6 ( As shown in b), the m target time-frequency resource units are multiple target time-frequency resource units with the same time domain position and discontinuous frequency domain position, or, as shown in (c) of FIG. 6, m target time-frequency resource
  • the time domain positions of the units are the same, but the frequency domain positions of a part of the target time-frequency resource units are continuous, and the frequency domain positions of the other part of the target time-frequency resource units are discontinuous.
  • the first terminal determines m competing resource groups corresponding to the m target time-frequency resource units.
  • the time domain positions of the m competing resource groups are all earlier than the time domain positions of the m target time-frequency resource units.
  • Any contention resource group includes at least two contention time-frequency resource units.
  • the first terminal determines the contention resource corresponding to the target time-frequency resource unit 11 Group 21, the first terminal determines the contention resource group 22 corresponding to the target time-frequency resource unit 12. Both contention resource groups are earlier than the time-domain position of the two target time-frequency resource units, and each contention resource group includes 10 contentions Time-frequency resource unit.
  • step 503 the first terminal sends a first contention signal on the first contention time-frequency resource unit of m contention resource groups.
  • the first terminal arbitrarily selects one contention time-frequency resource unit as the first contention time-frequency resource unit in each contention resource group, and sends on each first contention time-frequency resource unit The first competition signal.
  • the first contention signal may be a specific signal sequence, specific control information, or specific data.
  • the first contention signal is direct link control information including user data scheduling information and receiving necessary information.
  • the time domain positions of the first contention time-frequency resource units of the m contention resource groups may be the same or different. That is, the first terminal randomly selects a contention time-frequency resource unit in each contention resource group, but the randomly selected time domain position may be the same or different.
  • the first terminal determines the target time-frequency resource unit 121 and another target time-frequency resource unit 123.
  • the first contention signal is sent on another contention resource group 124, and the first contention signal on the two contention resource groups has the same time domain position and different frequency domain position.
  • the second terminal determines the target time-frequency resource unit 125 and another target time-frequency resource unit 127, and the first terminal matches the contention resource group 126 corresponding to the two target time-frequency resource units and The first contention signal is sent on the other contention resource group 128, and the first contention signal on the two contention resource groups has different time domain positions and different frequency domain positions.
  • the time domain position of the first contention signal sent by the terminal on any contention resource group is not limited.
  • the first contention signal sent in the i-th contention resource group is used to indicate that the first terminal competes to use the corresponding i-th target time-frequency resource unit.
  • step 504 for any one of the m target time-frequency resource units, the first terminal monitors other contention time-frequency resource units in the corresponding contention resource group except the first contention time-frequency resource unit .
  • step 505 when the monitoring results on the corresponding competition resource group are all that the first competition signal meets the competition success condition, the first terminal determines that m target time-frequency resource units compete successfully.
  • the first terminal listens to m competing resource groups corresponding to the m target time-frequency resource units respectively.
  • the m competing resource group monitoring results are m first competing signals that meet the competition success conditions
  • the first A terminal determines that m target time-frequency resource units compete successfully.
  • two target time-frequency resources are used as an example for description. It is assumed that the result of the first terminal monitoring on the competition resource group 21 is that the first competition signal meets the competition success condition, and the first terminal is If the result of the monitoring on the contention resource group 22 is that the first contention signal meets the contention success condition, then the first terminal determines that the target time-frequency resource units 11 and 12 have successfully competed.
  • the first terminal determines that the contention against the target time-frequency resource units 11 and 12 fails.
  • the method provided in this embodiment among the multiple target time-frequency resource units, for a terminal that fails to compete for any target time-frequency resource unit, it is determined that it is failed to compete for multiple target time-frequency resource units simultaneously, which is more suitable for The scenario where the first terminal needs to transmit a large amount of data in the same time domain position to avoid the problem that the target time-frequency resource unit successfully competed does not meet this transmission requirement, resulting in the wasted target time-frequency resource unit being wasted.
  • FIG. 9 shows a flowchart of a time-frequency resource contention method for direct connection communication provided by an exemplary embodiment of the present disclosure.
  • the method is applied to the communication system shown in FIG. 1 for example.
  • the method includes:
  • step 901 and step 501, step 902 and step 502, step 903 and step 503, 904 and step 504 are the same or similar, and this embodiment will not repeat them here.
  • step 905 for m target time-frequency resource units, the monitoring result of k first target time-frequency resource units on the corresponding competitive resource group is that the first competitive signal meets the competition success condition, and mk second targets
  • the monitoring result of the time-frequency resource unit on the corresponding competition resource group is that the first competition signal does not meet the competition success condition
  • the first terminal determines that k first target time-frequency resource units compete successfully, and k is a positive integer less than m.
  • the first contention signal and the second contention signal may be a specific signal sequence, specific control information, or specific data.
  • the first contention signal is a direct link containing user data scheduling information and receiving necessary information
  • the channel control information, or the second contention signal is direct link control information containing user data scheduling information and receiving necessary information.
  • two target time-frequency resource units are used as an example for illustration.
  • the time domain position of the first contention signal sent by the first terminal is earlier than that sent by the second terminal
  • the time domain position of the second contention signal of the second contention then the monitoring result of the target time-frequency resource unit 31 on the corresponding contention resource group 41 is that the first contention signal sent by the first terminal meets the competition success condition and is in another contention resource group 42
  • the time domain position of the second contention signal sent by the second terminal is earlier than the time domain position of the first contention signal sent by the first terminal
  • the monitoring result of the target time-frequency resource unit 32 on the corresponding contention resource group 42 The first contention signal sent for the first terminal does not meet the contention success condition.
  • the first terminal determines that the target time-frequency resource unit 31 succeeds in competition, and the target time-frequency resource unit 32 fails in competition.
  • step 906 for m target time-frequency resource units, the monitoring result of k first target time-frequency resource units on the corresponding competitive resource group is that the first competitive signal meets the competition success condition, and mk second targets
  • the first terminal determines the k first target time-frequency resource units, and the p number of consecutive first positions in the frequency domain
  • the target time-frequency resource unit competes successfully, k is a positive integer less than or equal to m, and p is a positive integer less than or equal to k.
  • four target time-frequency resource units are used as an example for illustration.
  • the time domain position of the first contention signal sent by the first terminal is earlier than that on the second terminal Time domain position of the second contention signal sent; in another contention resource group 62, the time domain position of the first contention signal sent by the first terminal is earlier than the time domain position of the second contention signal sent by the second terminal, at In another contention resource group 63, the time domain position of the first contention signal sent by the first terminal is earlier than the time domain position of the second contention signal sent by the second terminal and, in yet another contention resource group 64, the second terminal
  • the time domain position of the transmitted second contention signal is earlier than the time domain position of the first contention signal sent by the first terminal, and there are 3 target time-frequency resource units monitoring results on the corresponding contention resource group that the first contention signal meets Conditions for successful competition, the first terminal is in 4 target time-frequency resource units, and the target time-frequency resource unit where the first terminal successfully competes includes target time-frequency resource unit 51, target
  • step 906 it is more suitable for use scenarios where the transmission capability of the terminal is limited.
  • the terminal only supports a scenario where orthogonal frequency division multiplexing (Orthogonal Frequency-Division Multiplexing, OFDM) signals are sent on multiple consecutive frequency domain units.
  • OFDM Orthogonal Frequency-Division Multiplexing
  • Step 905 and step 906 are parallel steps. In this embodiment, when step 905 and step 906 are executed, one of the steps may be selected for execution.
  • the monitoring result of k first target time-frequency resource units on the corresponding competitive resource group is that the first competitive signal meets the competition success condition
  • the monitoring result of mk second target time-frequency resource units on the corresponding competitive resource group is that the first contention signal does not meet the competition success condition
  • the monitoring result of k first target time-frequency resource units on the corresponding competitive resource group is that the first competitive signal meets the competition success condition
  • the mk th determines p first targets with consecutive frequency domain positions in the k first target time-frequency resource units Time-frequency resource unit competition is successful, k is a positive integer less than or equal to m, and p is a positive integer less than or equal to k, which solves the limitation of the terminal's data transmission capacity and can not choose to use the frequency domain position of the contention is not continuous.
  • the time-frequency resource unit and the corresponding competing resource group may adopt the form of time division multiplexing or frequency division multiplexing, which is not limited in this application.
  • the time domain position of the contention resource group should be earlier than the time domain position of the corresponding target time-frequency resource unit.
  • the target time-frequency resource unit and the corresponding competing resource group are located in different frequency domain positions, and a target time-frequency resource unit in the same time domain position is in a different frequency domain position, and a target time A contention resource group corresponding to the frequency resource unit is in a different frequency domain position, a is a positive integer less than or equal to m.
  • FIG. 12 is a schematic diagram showing the correspondence between a time-frequency resource unit and a contention resource group.
  • the target time-frequency resource unit 401 in the frequency domain subchannel 2 and the contention resource in the frequency domain subchannel 2 Group 403 corresponds;
  • the target time-frequency resource unit 402 in frequency domain subchannel 2 corresponds to the contention resource group 404 in frequency domain subchannel 2. That is, the time-frequency resource unit and the contention resource group are divided by time division multiplexing.
  • the target time-frequency resource unit and the corresponding competing resource group are located in the same frequency domain position, and a target time-frequency resource unit in the same time domain position is in a different frequency domain position, and a target The a contention resource groups corresponding to the time-frequency resource units are in different frequency domain positions.
  • FIG. 13 shows a schematic diagram of the correspondence between a time-frequency resource unit and a contention resource group.
  • the target time-frequency resource unit 501 in the frequency domain sub-channel K corresponds to the contention resource group 503;
  • the target time-frequency resource unit 502 in channel K-1 corresponds to the contention resource group 504.
  • the target time-frequency resource unit 505 in the frequency domain sub-channel K corresponds to the contention resource group 507, and the target time-frequency resource unit 506 in the frequency domain sub-channel 1 corresponds to the contention resource
  • the group 508 corresponds to, that is, the time-frequency resource unit and the contention resource group are divided by frequency division multiplexing.
  • FIG. 15 shows a schematic diagram of the correspondence between another time-frequency resource unit and a contention resource group.
  • the entire carrier broadband is divided into K frequency-domain subchannels, and in the time domain.
  • Each time slot includes 14 symbols.
  • the first terminal determines the last 12 symbols as the target time-frequency resource unit, and determines the first 2 symbols in the time domain as the contention resource group corresponding to the target time-frequency resource unit. Assuming that the first terminal uses a 30KHz subcarrier spacing (SCS) to transmit data on the target time-frequency resource unit, two 30KHz SCS time-domain symbols can transmit eight 120KH SCS time-domain symbols.
  • the contention resource group contains 8 contention time-frequency resource units.
  • Fig. 16 is a block diagram of a device for competing for time-frequency resources of direct communication according to an exemplary embodiment.
  • the device may implement part of a terminal for contention for time-frequency resources of direct communication through software, hardware, or a combination of the two. Or all.
  • the device may include:
  • the first determining module 1601 is configured to determine a target time-frequency resource unit among n time-frequency resource units, where n is a positive integer.
  • the second determination module 1602 is configured to determine a contention resource group corresponding to the target time-frequency resource unit, the time-domain position of the contention resource group is earlier than the time-domain position of the target time-frequency resource unit, and the contention resource group includes at least two contention times Frequency resource unit.
  • the sending module 1603 is configured to send the first contention signal on the first contention time-frequency resource unit of the contention resource group.
  • the first contention signal may be a specific signal sequence, specific control information, or specific data.
  • the first contention signal is direct link control information including user data scheduling information and receiving necessary information.
  • the processing module 1604 is configured to monitor other contention time-frequency resource units in the contention resource group except the first contention time-frequency resource unit; according to the monitoring result on the contention resource group, determine whether the competition for the target time-frequency resource unit is successful.
  • the processing module 1604 is configured to determine that the competition for the target time-frequency resource unit is successful when the monitoring result on the competing resource group is that the first contention signal meets the competition success condition.
  • the target time-frequency resource units are m target time-frequency resource units located in the same time domain position, each target time-frequency resource unit corresponds to a respective contention resource group, and m is an integer greater than 1;
  • the processing module 1604 is configured to determine, for any target time-frequency resource unit of m target time-frequency resource units, when the monitoring result on the corresponding competition resource group is that the first competition signal meets the competition success condition, determine The target time-frequency resource units compete successfully.
  • the target time-frequency resource units are m target time-frequency resource units located in the same time domain position, each target time-frequency resource unit corresponds to its own competitive resource group, and m is an integer greater than 1;
  • the processing module 1604 is configured to, for m target time-frequency resource units, the monitoring result of k first target time-frequency resource units on the corresponding competitive resource group is that the first competitive signal meets the competition success condition, and the mk When the monitoring result of the two target time-frequency resource units on the corresponding contention resource group is that the first contention signal does not meet the competition success condition, it is determined that k first target time-frequency resource units successfully compete, and k is a positive integer less than m.
  • the target time-frequency resource units are m target time-frequency resource units located in the same time domain position and consecutive in the frequency domain position. Each target time-frequency resource unit corresponds to its own competing resource group, and m is greater than 1. Integer
  • the processing module 1604 is configured to, for m target time-frequency resource units, the monitoring result of k first target time-frequency resource units on the corresponding competitive resource group is that the first competitive signal meets the competition success condition, and the mk
  • the monitoring result of the two target time-frequency resource units on the corresponding contention resource group is that the first contention signal does not meet the competition success condition
  • the competitive success conditions include:
  • the second contention signal is monitored on the second contention time-frequency resource unit among the other contention time-frequency resource units, and the contention units of the contention time-frequency resource occupied by the first contention signal and the second contention signal conform to the preset time domain position relationship; And / or, the second contention signal is not heard in other contention time-frequency resource units.
  • At least two contention time-frequency resource units in the same contention resource group have the same frequency domain position and different time domain positions
  • the preset time domain position relationship includes:
  • the time domain position of the first contention time-frequency resource unit is earlier than the time domain position of the second contention time-frequency resource unit.
  • the i-th target time-frequency resource unit corresponds to the i-th contention resource group
  • the j target time-frequency resource units correspond to the jth contention resource group
  • i, j are positive integers less than or equal to m
  • the first contention signal in the i-th contention resource group and the first contention signal in the j-th contention resource group respectively correspond to the same time domain position of the first contention time-frequency resource unit.
  • the target time-frequency resource unit and the corresponding competing resource group are located in different frequency domain positions, and a target time-frequency resource unit in the same time domain position is in a different frequency domain position, and a target time
  • the a resource group corresponding to the frequency resource unit is in a different frequency domain position, a is a positive integer less than or equal to m; or, the target time-frequency resource unit and the corresponding resource group are located in the same frequency domain position, and the same A target time-frequency resource unit in a time domain position is in a different frequency domain position, and a competing resource group corresponding to a target time-frequency resource unit is in a different frequency domain position,
  • the direct-frequency communication time-frequency resource competition device determines the target time-frequency resource unit and the contention resource corresponding to the target time-frequency resource unit from the n time-frequency resource units through the first terminal Group, send the first competition signal on the first competition time-frequency resource unit of the competition resource group, and determine whether to successfully compete with the target time-frequency resource unit according to the monitoring result on the competition resource group, ensuring that each competition process is based on competition
  • the resource group is dynamically determined and does not need to be predicted based on periodic information. Even terminals with acyclic data transmission needs can compete dynamically when data needs to be transmitted, avoiding collisions during direct communication problem.
  • Fig. 17 is a block diagram of a terminal according to an exemplary embodiment.
  • the terminal 1700 may be the first terminal or the second terminal.
  • the terminal 1700 may include: a processor 1701, a receiver 1702, a transmitter 1703, and a memory 1704.
  • the receiver 1702, the transmitter 1703, and the memory 1704 are respectively connected to the processor 1701 through a bus.
  • the processor 1701 includes one or more processing cores, and the processor 1701 executes the method executed by the terminal in the direct-frequency communication contention method provided by the embodiments of the present disclosure by running software programs and modules.
  • the memory 1704 may be used to store software programs and modules. Specifically, the memory 1704 may store an operating system 17041 and an application program module 17042 required for at least one function.
  • the receiver 1702 is used to receive communication data sent by other devices, and the transmitter 1703 is used to send communication data to other devices.
  • a computer-readable storage medium is also provided.
  • the computer-readable storage medium is a non-volatile computer-readable storage medium.
  • the computer-readable storage medium stores a computer program and the stored When the computer program is executed by the processing component, it can implement the time-frequency resource competition method for the direct connection communication provided by the above embodiments of the present disclosure.
  • Embodiments of the present disclosure also provide a computer program product that stores instructions that, when run on a computer, enable the computer to perform the time-frequency resource competition method for direct connection communication provided by the embodiments of the present disclosure.
  • An embodiment of the present disclosure also provides a chip, which includes a programmable logic circuit and / or program instructions, and when the chip is running, it can perform the time-frequency resource competition method for direct connection communication provided by the embodiment of the present disclosure.

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Abstract

本公开提供了一种直连通信的时频资源竞争方法、装置、设备及系统，属于通信领域。所述方法包括：通过第一终端在n个时频资源单元中确定目标时频资源单元，以及与目标时频资源单元对应的竞争资源组，在竞争资源组的第一竞争时频资源单元上发送第一竞争信号，根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功，保证了每次竞争过程是基于竞争资源组来动态确定的，并不需要根据周期性信息来进行预测，即便是存在非周期性数据发送需求的终端，也能够在需要发送数据时才进行动态竞争，避免了直连通信时的碰撞问题。

Description

直连通信的时频资源竞争方法、装置、设备及系统 技术领域
本公开涉及通信领域，特别涉及一种直连通信的时频资源竞争方法、装置、设备及系统。
背景技术
随着自动驾驶技术的不断发展，为了支持车联网(Vehicle to Everything，V2X)应用，人们对V2X技术的要求越来越高。基于3G/4G/5G等蜂窝网通信技术演进形成的蜂窝车联网技术(Cellular based V2X，C-V2X)，适用于车载设备和位于车辆地理位置周边的用户设备之间的通信。
在基于长期演进(Long-Term Evolution，LTE)系统的V2X的直连通信系统中，为了避免多个临近用户设备周期性发送数据时的相互干扰，通常使用周期性的资源预留结合信道感知技术来减少干扰。用户设备A需要获取其它用户设备B发送的控制信息，根据控制信息中包含的发送周期和资源占用等信息，预测用户设备B下一次发送数据用的时频资源及干扰，从而避免使用已经被用户设备B预先占用的时频资源。
而在5G新空口(New Radio，NR)系统中，一些V2X应用是非周期性或随机发送数据的。对于这些数据，用户设备A无法根据用户设备B上一次发送的数据来预测该用户设备B下一次发送数据时的干扰和碰撞，导致上述方案无法有效使用。
发明内容
本公开实施例提供了一种直连通信的时频资源竞争方法、装置、设备及系统，可以解决在5G NR系统中，一些V2X应用是非周期性或随机发送数据的，对于这些数据，用户设备A无法根据用户设备B上一次发送的数据来预测该用户设备B下一次发送数据时的干扰和碰撞问题。技术方案如下：
根据本公开实施例的一方面，提供了一种直连通信的时频资源竞争方法，该方法包括：
第一终端在n个时频资源单元中确定出目标时频资源单元，n为正整数；
第一终端确定与目标时频资源单元对应的竞争资源组，竞争资源组的时域位置早于目标时频资源单元的时域位置，竞争资源组包括至少两个竞争时频资源单元；
第一终端在竞争资源组的第一竞争时频资源单元上发送第一竞争信号；
第一终端监听竞争资源组中除第一竞争时频资源单元之外的其它竞争时频资源单元；根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功。
在一些可能是实施方式中，第一终端根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功，包括：
第一终端在竞争资源组上的监听结果为第一竞争信号符合竞争成功条件时，确定对目标时频资源单元竞争成功。
在一些可能是实施方式中，目标时频资源单元是位于相同时域位置的m个目标时频资源单元，每个目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
在一些可能是实施方式中，第一终端根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功，包括：
对于m个目标时频资源单元中的任意一个目标时频资源单元，在对应的竞争资源组上的监听结果均为第一竞争信号符合竞争成功条件时，确定对m个目标时频资源单元竞争成功。
在一些可能是实施方式中，目标时频资源单元为位于相同时域位置的m个目标时频资源单元，每个目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
第一终端根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功，包括：
对于m个目标时频资源单元，存在k个第一目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，确定对k个第一目标时频资源单元竞争成功，k为小于m的正整数。
在一些可能是实施方式中，目标时频资源单元为位于相同时域位置且频域 位置连续的m个目标时频资源单元，每个目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
第一终端根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功，包括：
对于m个目标时频资源单元，存在k个第一目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，确定对k个第一目标时频资源单元中频域位置连续的p个第一目标时频资源单元竞争成功，k为小于或等于m的正整数，p为小于或等于k的正整数。
在一些可能是实施方式中，竞争成功条件包括：
在其它竞争时频资源单元中的第二竞争时频资源单元上监听到第二竞争信号，且第一竞争信号和第二竞争信号各自占用的竞争时频资源单元符合预设时域位置关系；和/或，在其它竞争时频资源单元未监听到第二竞争信号。
在一些可能是实施方式中，同一个竞争资源组中的至少两个竞争时频资源单元的频域位置相同且时域位置不同；
预设时域位置关系包括：第一竞争时频资源单元的时域位置早于第二竞争时频资源单元的时域位置。
在一些可能是实施方式中，m个目标时频资源单元中存在第i个目标时频资源单元和第j个目标时频资源单元；第i个目标时频资源单元对应第i个竞争资源组，第j个目标时频资源单元对应第j个竞争资源组，i，j为小于或等于m的正整数；
第i个竞争资源组中的第一竞争信号和第j个竞争资源组中的第一竞争信号分别对应的第一竞争时频资源单元的时域位置相同。
在一些可能是实施方式中，目标时频资源单元与对应的竞争资源组位于不同的频域位置，且同一个时域位置的a个目标时频资源单元处于不同的频域位置，与a个目标时频资源单元分别对应的a个竞争资源组处于不同的频域位置，a为小于或等于m的正整数；或，目标时频资源单元与对应的竞争资源组位于相同的频域位置，且同一个时域位置的a个目标时频资源单元处于不同的频域位置，与a个目标时频资源单元分别对应的a个竞争资源组处于不同的频域位置。
根据本公开实施例的另一方面，提供了一种直连通信的时频资源竞争装置，其特征在于，该装置包括：
第一确定模块，被配置为在n个时频资源单元中确定出目标时频资源单元，n为正整数；
第二确定模块，被配置为确定与目标时频资源单元对应的竞争资源组，竞争资源组的时域位置早于目标时频资源单元的时域位置，竞争资源组包括至少两个竞争时频资源单元；
发送模块，被配置为在竞争资源组的第一竞争时频资源单元上发送第一竞争信号；
处理模块，被配置为监听竞争资源组中除第一竞争时频资源单元之外的其它竞争时频资源单元；根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功。
在一些可能是实施方式中，处理模块，被配置为在竞争资源组上的监听结果为第一竞争信号符合竞争成功条件时，确定对目标时频资源单元竞争成功。
在一些可能是实施方式中，目标时频资源单元是位于相同时域位置的m个目标时频资源单元，每个目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
处理模块，被配置为对于m个目标时频资源单元中的任意一个目标时频资源单元，在对应的竞争资源组上的监听结果均为第一竞争信号符合竞争成功条件时，确定对m个目标时频资源单元竞争成功。
在一些可能是实施方式中，目标时频资源单元为位于相同时域位置的m个目标时频资源单元，每个目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
处理模块，被配置为对于m个目标时频资源单元，存在k个第一目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，确定对k个第一目标时频资源单元竞争成功，k为小于m的正整数。
在一些可能是实施方式中，目标时频资源单元为位于相同时域位置且频域位置连续的m个目标时频资源单元，每个目标时频资源单元对应各自的竞争资 源组，m为大于1的整数；
处理模块，被配置为对于m个目标时频资源单元，存在k个第一目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，确定对k个第一目标时频资源单元中频域位置连续的p个第一目标时频资源单元竞争成功，k为小于或等于m的正整数，p为小于或等于k的正整数。
在一些可能是实施方式中，竞争成功条件包括：
在其它竞争时频资源单元中的第二竞争时频资源单元上监听到第二竞争信号，且第一竞争信号和第二竞争信号各自占用的竞争时频资源单元符合预设时域位置关系；和/或，在其它竞争时频资源单元未监听到第二竞争信号。
在一些可能是实施方式中，同一个竞争资源组中的至少两个竞争时频资源单元的频域位置相同且时域位置不同；
预设时域位置关系包括：
第一竞争时频资源单元的时域位置早于第二竞争时频资源单元的时域位置。
在一些可能是实施方式中，m个目标时频资源单元中存在第i个目标时频资源单元和第j个目标时频资源单元；第i个目标时频资源单元对应第i个竞争资源组，第j个目标时频资源单元对应第j个竞争资源组，i，j为小于或等于m的正整数；
第i个竞争资源组中的第一竞争信号和第j个竞争资源组中的第一竞争信号分别对应的第一竞争时频资源单元的时域位置相同。
在一些可能是实施方式中，目标时频资源单元与对应的竞争资源组位于不同的频域位置，且同一个时域位置的a个目标时频资源单元处于不同的频域位置，与a个目标时频资源单元分别对应的a个竞争资源组处于不同的频域位置，a为小于或等于m的正整数；或，目标时频资源单元与对应的竞争资源组位于相同的频域位置，且同一个时域位置的a个目标时频资源单元处于不同的频域位置，与a个目标时频资源单元分别对应的a个竞争资源组处于不同的频域位置。
根据本公开实施例的另一方面，提供了一种终端，该终端包括：
处理器；
与处理器相连的收发器；
用于存储处理器可执行指令的存储器；
其中，处理器被配置为加载并执行可执行指令以实现上述任一所述的直连通信的时频资源竞争方法。
根据本公开实施例的另一方面，提供了一种计算机可读存储介质，该可读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上述任一所述的直连通信的时频资源竞争方法。
本公开实施例提供的技术方案至少包括以下有益效果：
通过第一终端在n个时频资源单元中确定目标时频资源单元，以及与目标时频资源单元对应的竞争资源组，在竞争资源组的第一竞争时频资源单元上发送第一竞争信号，根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功，保证了每次竞争过程是基于竞争资源组来动态确定的，并不需要根据周期性信息来进行预测，即便是存在非周期性数据发送需求的终端，也能够在需要发送数据时才进行动态竞争，避免了直连通信时的碰撞问题。
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和解释性的，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是根据一示例性实施例示出的通信系统的示意图；
图2是根据一示例性实施例示出的示出的一种时频资源单元和竞争资源组的划分示意图；
图3是根据一示例性实施例示出的一种直连通信的时频资源竞争方法的流程图；
图4是根据一示例性实施例示出的一种目标时频资源单元和竞争资源组的对应关系的示意图；
图5是根据一示例性实施例示出的一种直连通信的时频资源竞争方法的流 程图；
图6是根据一示例性实施例示出的一种目标时频资源单元的位置示意图；
图7是根据一示例性实施例示出的一种目标时频资源单元和竞争资源组的对应关系的示意图；
图8是根据一示例性实施例示出的第一竞争信号的时域位置示意图；
图9是根据一示例性实施例示出的一种直连通信的时频资源竞争方法的流程图；
图10是根据一示例性实施例示出的一种目标时频资源单元和竞争资源组的对应关系的示意图；
图11是根据一示例性实施例示出的一种目标时频资源单元和竞争资源组的对应关系的示意图；
图12是根据一示例性实施例示出的一种时频资源单元和竞争资源组的对应关系的示意图；
图13是根据一示例性实施例示出的一种时频资源单元和竞争资源组的对应关系的示意图；
图14是根据一示例性实施例示出的一种时频资源单元和竞争资源组的对应关系的示意图；
图15是根据一示例性实施例示出的另一种时频资源单元和竞争资源组的对应关系的示意图；
图16是根据一示例性实施例示出的一种直连通信的时频资源竞争装置的框图；
图17是根据一示例性实施例示出的一种终端的框图。
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。
图1示出了本公开一个示意性实施例提供的通信系统的示意图。直连通信(sidelink)可以应用于基于车联网的通信系统中。该通信系统包括终端100、 终端120、终端140、终端160和终端180。
通信系统中，终端100、终端120、终端140、终端160和终端180为地理位置接近的终端，在数据传输时，至少两个终端竞争相同的时频资源进行数据传输，本公开实施例不对终端的数量和类型加以限定。
以终端100为例进行举例说明，终端100包括行人101、车辆102和基础设施103中的至少一种，行人101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。
车辆102包括具有通信功能的车辆。
基础设施103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。
由于直连通信在很多情况下属于非周期性的数据传输场景。因此，本公开实施例希望提供一种基于竞争的碰撞避免方案。首先对本公开实施例涉及的若干个名词进行介绍：
用于数据传输的时频资源单元：用于传输直连通信数据的时域单元和/或频域单元。在直连通信时，以时频资源单元为单位进行资源分配。示意性的，一个时域资源单元在时域上为1个时隙(slot)，在频域上为一个频域子信道。可选地，频域子信道是指在频域上将载波带宽按照每组k个资源块(Resource Block，RB)的方式按照频率由低到高划分为[N/K]个子信道而得到的。在一个slot中，可以存在多个频域位置不同的时频资源单元。这些时频资源单元，是采用竞争方式进行使用的。
竞争资源组：用于在对同一时频资源单元进行竞争使用过程中，承载各个终端的竞争信号的时频资源。竞争资源组与时频资源单元一一对应，每个时频资源单元具有各自对应的竞争资源组，竞争资源组的时域位置早于时频资源单元的时域位置。每个竞争资源组中包括至少两个竞争时频资源单元。每个竞争时频资源单元，可以占用非常少量的时频资源，比如每个竞争时频资源单元是一个资源单元(Resource Element，RE)，或者每个竞争时频资源单元可以用于传输特定信号序列，或特定控制信息，或特定数据；例如传输包含数据传输调度和接收必要信息的直连链路控制信息。本公开中的“特定”是指协议约定的，特定信号序列是指协议约定的一个或多个信号序列；特定控制信息是指 协议约定控制信息；特定数据是指协议约定的数据。
示意性的，图2示出了一种时频资源单元和竞争资源组的划分示意图，如图2所示，在时隙n中，将时频资源划分为K个时频资源单元，编号为1至K。在时隙n-M中，每个时频资源单元对应各自的竞争资源组，比如编号为1的时频资源单元对应倒数第一行竞争资源组，编号为2的时频资源单元对应倒数第二行竞争资源组，编号为K-1的时频资源单元对应第二行竞争资源组，编号为K的时频资源单元对应第一行竞争资源组。对于同一个时隙n中的不同时频资源单元所对应的不同竞争资源组分布于不同的频域位置。
每个竞争资源组包括10个资源块，这10个资源块在时域上分别占用不同的符号(symbol)，在频域上占据相同的RB位置。
需要说明的是，上述图2中所示出的划分示意图仅为示意性说明，并不构成对时频资源单元和竞争资源组的划分方式的限定。
图3示出了本公开一个示意性实施例提供的直连通信的时频资源竞争方法的流程图。如图3所示，本实施例以该方法应用在如图1所示的通信系统中进行举例说明，该方法包括：
在步骤301中，第一终端确定在n个时频资源单元中确定出目标时频资源单元，n为正整数。
第一终端在直连数据传输时，在允许使用的n个时频资源单元中，确定出本次竞争使用的一个或多个目标时频资源单元。
以目标时频资源单元是一个为例来说明，假设该目标时频资源单元是图2中时隙n内的时频资源单元2。
在步骤302中，第一终端确定与目标时频资源单元对应的竞争资源组，竞争资源组的时域位置早于目标时频资源单元的时域位置，竞争资源组包括至少两个竞争时频资源单元。
竞争资源组所在的时域位置早于目标时频资源单元所在的时域位置。比如，竞争资源组位于时隙n-M中，目标时频资源单元位于时隙n中。
竞争资源组包括至少两个竞争时频资源单元。同一个竞争资源组中的至少两个竞争时频资源单元的频域位置相同且时域位置不同。
示意性的参考图2，与时频资源单元2对应的竞争资源组是位于时隙n-M 中的10个资源块(图中具有左下划线背景的一行RB)。
在步骤303中，第一终端在竞争资源组的第一竞争时频资源单元上发送第一竞争信号。
第一终端在该竞争资源组中选择任意一个竞争时频资源单元作为第一竞争时频资源单元，并且在第一竞争时频资源单元上发送第一竞争信号。在一些实施例中，第一竞争信号可以为特定信号序列，特定控制信息或特定数据，可选地，第一竞争信号为包含用户数据调度信息和接收必要信息的直连链路控制信息。
该第一竞争信号用于向其它终端表示存在第一终端竞争使用该目标时频资源单元。
示意性的参考图2，第一终端可以在竞争资源组的10个RB中随机选择出第3个符号中的RB(如图2中具有右下划线背景的一个RB)作为第一竞争时频资源单元，并在第3个符号中的RB上发送第一竞争信号。
在步骤304中，第一终端监听竞争资源组中除第一竞争时频资源单元之外的其它竞争时频资源单元；
在步骤305中，第一终端根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功。
第一终端监听竞争资源组中除第一竞争时频资源单元之外的其它竞争时频资源单元，第一终端在竞争资源组上的监听结果为第一竞争信号符合竞争成功条件时，第一终端确定对与竞争资源组对应的目标时频资源单元竞争成功。
示意性的，竞争成功条件包括但不限于如下两种中的任意一种：
第一，在竞争资源组的其它竞争时频资源单元上监听到第二竞争信号(一个或多个)，且第一竞争信号和第二竞争信号各自占用的竞争时频资源单元的时域位置符合预设时域位置关系。
第二，在竞争资源组的其它竞争时频资源单元上未监听到第二竞争信号。
如果第一终端在竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，第一终端可以重复上述步骤，继续竞争目标时频资源单元。
综上所述，本实施例提供的直连通信的时频资源竞争方法，通过第一终端在n个时频资源单元中确定目标时频资源单元，以及与目标时频资源单元对应的竞争资源组，在竞争资源组的第一竞争时频资源单元上发送第一竞争信号，根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功，保证 了每次竞争过程是基于竞争资源组来动态确定的，并不需要根据周期性信息来进行预测，即便是存在非周期性数据发送需求的终端，也能够在需要发送数据时才进行动态竞争，避免了直连通信时的碰撞问题。
在基于图3的一个可选实施例中，竞争成功条件包括如下两种条件中的任意一种:
第一，在其它竞争时频资源单元中的第二竞争时频资源单元上监听到第二竞争信号，并且第一竞争信号和第二竞争信号各自占用的竞争时频资源单元符合预设时域位置关系。
在一个可能的实施例中，第一竞争时频资源单元和第二竞争时频资源单元符合预设时域位置关系包括：第一竞争时频资源单元的时域位置早于第二竞争时频资源单元的时域位置，如图4所示，对于目标时频资源单元2，对应的竞争资源组包括10个竞争时频资源单元，第一终端随机发送的第一竞争信号所处的竞争时频资源单元的时域位置(第3个符号)，早于第二终端随机发送的第二竞争信号所处的竞争时频资源单元的时域位置(第6个符号)，以及早于第三终端随机发送的第三竞争信号所处的竞争时频资源单元的时域位置(第8个符号)，那么第一终端确定对目标时频资源单元2竞争成功，相应的，第二终端和第二终端放弃选择该目标时频资源单元2。其中，第一竞争信号、第二竞争信号和第三竞争信号可以为特定信号序列，特定控制信息或特定数据，可选地，第一竞争信号、第二竞争信号或第三竞争信号为包含用户数据调度信息和接收必要信息的直连链路控制信息。
可选地，该条件适用于存在至少两个终端对同一个时频资源单元进行竞争传输的场景。
第二，在其它竞争时频资源单元未监听到第二竞争信号。
若不存在任何其它终端在竞争资源组中发送第二竞争信号，也即只有第一终端在竞争使用目标时频资源单元，则也认为是竞争成功。
示意性的如图4，目标时频资源单元K对应的竞争资源组上，只有第一终端发送的第一竞争信号，不存在任何其它终端在竞争资源组中发送第二竞争信号，则也认为第一终端竞争目标时频资源单元K成功。
综上所述，本实施例提供的竞争成功条件，通过多个终端在同一个竞争资源组中发送竞争信号时，若第一竞争信号的发送位置早于任意一个第二竞争信 号的发送位置，则发送第一竞争信号的第一终端确定竞争目标时频资源成功，可以使得各个终端在监听到竞争资源组中的第一竞争信号时就能够判断是否竞争成功，从而执行后续逻辑，从而节省终端所需要的监听时长，提高终端的竞争效率，避免不需要的能量消耗、电量消耗和计算资源消耗。
上述实施例是以目标时频资源单元为1个来举例说明，在其它实施例中第一终端也可以同时竞争2个以上的目标时频资源单元。
在基于图3的一个可选实施例中，图5示出了本公开一个示意性实施例提供的直连通信的时频资源竞争方法的流程图。本实施例以该方法应用在如图1所示的通信系统中进行举例说明，该方法包括：
在步骤501中，第一终端在n个时频资源单元中确定出m个目标时频资源单元，m个目标时频资源单元是位于相同时域位置的m个目标时频资源单元，每个目标时频资源单元对应各自的竞争资源组，n为正整数且m为大于1的整数。
在一些实施例中，如图6中(a)所示，m个目标时频资源单元是时域位置相同且频域位置也连续的多个目标时频资源单元，或者，如图6中(b)所示，m个目标时频资源单元是时域位置相同且频域位置不连续的多个目标时频资源单元，或者，如图6中(c)所示，m个目标时频资源单元的时域位置相同，但一部分目标时频资源单元的频域位置连续，另一部分目标时频资源单元的频域位置不连续。
在步骤502中，第一终端确定与m个目标时频资源单元对应的m个竞争资源组，m个竞争资源组的时域位置均早于m个目标时频资源单元的时域位置，该任一竞争资源组包括至少两个竞争时频资源单元。
在一些实施例中，如图7所示，以m个目标时频资源单元是时域位置相同且连续目标时频资源单元为例，第一终端确定与目标时频资源单元11对应的竞争资源组21，第一终端确定与目标时频资源单元12对应的竞争资源组22。2个竞争资源组均早于2个目标时频资源单元的时域位置，每个竞争资源组包括10个竞争时频资源单元。
在步骤503中，第一终端在m个竞争资源组的第一竞争时频资源单元上发送第一竞争信号。
对于确定的多个竞争资源组，第一终端在每个竞争资源组中均任意选择一 个竞争时频资源单元作为第一竞争时频资源单元，并且在每个第一竞争时频资源单元上发送第一竞争信号。在一些实施例中，第一竞争信号可以为特定信号序列，特定控制信息或特定数据，可选地，第一竞争信号为包含用户数据调度信息和接收必要信息的直连链路控制信息。
可选地，m个竞争资源组的第一竞争时频资源单元的时域位置可以是相同的，也可以是不同的。也即，第一终端在每个竞争资源组中随机选择一个竞争时频资源单元，但该随机选择的时域位置可能相同或不同。
在一些实施例中，如图8所示，第一终端确定目标时频资源单元121和另一个目标时频资源单元123，第一终端在两个目标时频资源单元对应的竞争资源组122和另一个竞争资源组124上发送第一竞争信号，两个竞争资源组上的第一竞争信号的时域位置相同且频域位置不同。
在一些实施例中，如图8所示，第二终端确定目标时频资源单元125和另一个目标时频资源单元127，第一终端在两个目标时频资源单元对应的竞争资源组126和另一个竞争资源组128上发送第一竞争信号，两个竞争资源组上的第一竞争信号的时域位置不同且频域位置不同。
在本实施例中，不对终端在任一竞争资源组上发送的第一竞争信号的时域位置加以限定。
在第i个竞争资源组中发送的第一竞争信号，用于表示存在第一终端竞争使用相应的第i个目标时频资源单元。
在步骤504中，对于m个目标时频资源单元中的任意一个目标时频资源单元，第一终端监听相应的竞争资源组中除第一竞争时频资源单元之外的其它竞争时频资源单元。
在步骤505中，在对应的竞争资源组上的监听结果均为第一竞争信号符合竞争成功条件时，第一终端确定对m个目标时频资源单元竞争成功。
对于m个目标时频资源单元，第一终端监听m个目标时频资源单元分别对应的m个竞争资源组，m个竞争资源组监听结果为m个第一竞争信号符合竞争成功条件时，第一终端确定对m个目标时频资源单元竞争成功。
在一些实施例中，如图7所示，以2个目标时频资源进行举例说明，假设第一终端在竞争资源组21上监听结果为第一竞争信号符合竞争成功条件，同时第一终端在竞争资源组22上监听结果为第一竞争信号符合竞争成功条件，那么第一终端确定对目标时频资源单元11和12竞争成功。
若竞争资源组21和竞争资源组22上存在至少一个监听结果为第一竞争信号不符合竞争成功条件，那么第一终端确定对目标时频资源单元11和12竞争失败。
综上所述，本实施例提供的方法，在多个目标时频资源单元中，对于任一目标时频资源单元竞争失败的终端，确定同时竞争多个目标时频资源单元失败，较为适用于第一终端需要同一时域位置上传输大数据量的场景，避免因成功竞争到的目标时频资源单元不满足本次传输需求，导致已经竞争成功的目标时频资源单元被浪费的问题。
基于图3的一个可选实施例中，图9示出了本公开一个示意性实施例提供的直连通信的时频资源竞争方法的流程图。本实施例以该方法应用在如图1所示的通信系统中进行举例说明，该方法包括：
步骤901和步骤501、步骤902和步骤502、步骤903和步骤503、904和步骤504的内容相同或相类似，本实施例在此不做赘述。
在步骤905中，对于m个目标时频资源单元，存在k个第一目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，第一终端确定k个第一目标时频资源单元竞争成功，k为小于m的正整数。
在一些实施例中，第一竞争信号和第二竞争信号可以为特定信号序列，特定控制信息或特定数据，可选地，第一竞争信号为包含用户数据调度信息和接收必要信息的直连链路控制信息，或，第二竞争信号为包含用户数据调度信息和接收必要信息的直连链路控制信息。
在一些实施例中，以2个目标时频资源单元进行举例说明，如图10所示，在竞争资源组41上，第一终端发送的第一竞争信号的时域位置早于第二终端发送的第二竞争信号的时域位置，那么目标时频资源单元31在对应的竞争资源组41上的监听结果为第一终端发送的第一竞争信号符合竞争成功条件，且在另一个竞争资源组42上，第二终端发送的第二竞争信号的时域位置早于第一终端发送的第一竞争信号的时域位置，那么目标时频资源单元32在对应的竞争资源组42上的监听结果为第一终端发送的第一竞争信号不符合竞争成功条件，此时第一终端确定目标时频资源单元31竞争成功，目标时频资源单元 32竞争不成功。
在步骤906中，对于m个目标时频资源单元，存在k个第一目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，第一终端确定k个第一目标时频资源单元中，频域位置连续的p个第一目标时频资源单元竞争成功，k为小于m或等于m的正整数，p为小于或等于k的正整数。
在一些实施例中，以4个目标时频资源单元进行举例说明，如图11所示，在竞争资源组61中，第一终端发送的第一竞争信号的时域位置早于第二终端上发送的第二竞争信号的时域位置；在另一个竞争资源组62中，第一终端发送的第一竞争信号的时域位置早于第二终端发送的第二竞争信号的时域位置，在另一个竞争资源组63中，第一终端发送的第一竞争信号的时域位置早于第二终端发送的第二竞争信号的时域位置并且，在又一个竞争资源组64中，第二终端发送的第二竞争信号的时域位置早于第一终端发送的第一竞争信号的时域位置，存在3个目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，第一终端在4个目标时频资源单元中，第一终端竞争成功的目标时频资源单元包括目标时频资源单元51、目标时频资源单元52和目标时频资源单元53，第一终端选择频域位置连续的目标时频资源单元51和目标时频资源单元52，确定目标时频资源单元51和另一个目标时频资源单元52竞争成功。
针对步骤906的技术方案，较为适用于终端的发送能力受限的使用场景。比如终端仅支持在多个连续的频域单元上发送正交频分复用技术(Orthogonal Frequency-Division Multiplexing，OFDM)信号的场景。
步骤905和步骤906为并列步骤，本实施例在执行步骤905和步骤906时，可以任选其中一种步骤执行。
综上所述，本实施例提供的方法，对于m个目标时频资源单元，存在k个第一目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，确定k个第一目标时频资源单元竞争成功，使得第一终端优先使用已经竞争成功的第一目标时频资源单元进行传输。
作为另外一种实现方式，对于m个目标时频资源单元，存在k个第一目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，确定k个第一目标时频资源单元中，频域位置连续的p个第一目标时频资源单元竞争成功，k为小于m或等于m的正整数，p为小于或等于k的正整数，解决了由于终端的数据传输能力限制，不能选择使用竞争成功的频域位置不连续的多个目标时频资源单元进行数据传输的问题。
结合上述图2所示的资源划分方式以及各个方法实施例，时频资源单元与对应的竞争资源组可以采用时分复用形式，也可以采用频分复用形式，本申请对此不加以限定，但竞争资源组所在的时域位置应当早于相对应的目标时频资源单元所在的时域位置。
在一些实施例中，目标时频资源单元与对应的竞争资源组位于不同的频域位置，且同一个时域位置的a个目标时频资源单元处于不同的频域位置，与a个目标时频资源单元分别对应的a个竞争资源组处于不同的频域位置，a为小于或等于m的正整数。
图12示出了一种时频资源单元和竞争资源组的对应关系的示意图，如图12所示，频域子信道2中的目标时频资源单元401与频域子信道2中的竞争资源组403对应；频域子信道2中的目标时频资源单元402与频域子信道2中的竞争资源组404对应。也即，时频资源单元和竞争资源组采用时分复用方式划分。
在另一些实施例中，目标时频资源单元与对应的竞争资源组位于相同的频域位置，且同一个时域位置的a个目标时频资源单元处于不同的频域位置，与a个目标时频资源单元分别对应的a个竞争资源组处于不同的频域位置。
图13示出了一种时频资源单元和竞争资源组的对应关系的示意图，如图13所示，频域子信道K中的目标时频资单元501与竞争资源组503对应；频域子信道K-1中的目标时频资单元502与竞争资源组504对应。在一些可能的实施例中，如图14所示，频域子信道K中的目标时频资源单元505与竞争资源组507对应，频域子信道1中的目标时频资源单元506与竞争资源组508对应，也即，时频资源单元和竞争资源组采用频分复用方式划分。
在再一些可能的实施例中，图15示出了另一种时频资源单元和竞争资源组的对应关系的示意图，频域上将整个载波宽带划分为K个频域子信道，时域上每一个时隙包括14个符号，第一终端将后12个符号确定为目标时频资源单元，将时域位置靠前2个符号确定为与目标时频资源单元对应的竞争资源组。假设第一终端在目标时频资源单元上在采用30KHz的子载波间距(Subcarrier Spacing，SCS)传输数据，两个30KHz SCS的时域符号可以传输8个120KH SCS的时域符号，此时每个竞争资源组包含8个竞争时频资源单元。
下述为本公开装置实施例，可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节，请参照本公开方法实施例。
图16是根据一示例性实施例示出的一种直连通信的时频资源竞争装置的框图，该装置可以通过软件、硬件或者两者的结合实现直连通信的时频资源竞争的终端的部分或者全部。该装置可以包括：
第一确定模块1601，被配置为在n个时频资源单元中确定出目标时频资源单元，n为正整数。
第二确定模块1602，被配置为确定与目标时频资源单元对应的竞争资源组，竞争资源组的时域位置早于目标时频资源单元的时域位置，竞争资源组包括至少两个竞争时频资源单元。
发送模块1603，被配置为在竞争资源组的第一竞争时频资源单元上发送第一竞争信号。
在一些实施例中，第一竞争信号可以为特定信号序列，特定控制信息或特定数据，可选地，第一竞争信号为包含用户数据调度信息和接收必要信息的直连链路控制信息。
处理模块1604，被配置为监听竞争资源组中除第一竞争时频资源单元之外的其它竞争时频资源单元；根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功。
在一些实施例中，处理模块1604，被配置为在竞争资源组上的监听结果为第一竞争信号符合竞争成功条件时，确定对目标时频资源单元竞争成功。
在一些实施例中，目标时频资源单元是位于相同时域位置的m个目标时频资源单元，每个目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
处理模块1604，被配置为对于m个目标时频资源单元中的任意一个目标 时频资源单元，在对应的竞争资源组上的监听结果均为第一竞争信号符合竞争成功条件时，确定对m个目标时频资源单元竞争成功。
在一些实施例中，目标时频资源单元为位于相同时域位置的m个目标时频资源单元，每个目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
处理模块1604，被配置为对于m个目标时频资源单元，存在k个第一目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，确定对k个第一目标时频资源单元竞争成功，k为小于m的正整数。
在一些实施例中，目标时频资源单元为位于相同时域位置且频域位置连续的m个目标时频资源单元，每个目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
处理模块1604，被配置为对于m个目标时频资源单元，存在k个第一目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的竞争资源组上的监听结果为第一竞争信号不符合竞争成功条件时，确定对k个第一目标时频资源单元中频域位置连续的p个第一目标时频资源单元竞争成功，k为小于或等于m的正整数，p为小于或等于k的正整数。
在一些实施例中，竞争成功条件包括：
在其它竞争时频资源单元中的第二竞争时频资源单元上监听到第二竞争信号，且第一竞争信号和第二竞争信号各自占用的竞争时频资源单元符合预设时域位置关系；和/或，在其它竞争时频资源单元未监听到第二竞争信号。
在一些实施例中，同一个竞争资源组中的至少两个竞争时频资源单元的频域位置相同且时域位置不同；
预设时域位置关系包括：
第一竞争时频资源单元的时域位置早于第二竞争时频资源单元的时域位置。
在一些实施例中，m个目标时频资源单元中存在第i个目标时频资源单元和第j个目标时频资源单元；第i个目标时频资源单元对应第i个竞争资源组，第j个目标时频资源单元对应第j个竞争资源组，i，j为小于或等于m的正整数；
第i个竞争资源组中的第一竞争信号和第j个竞争资源组中的第一竞争信号分别对应的第一竞争时频资源单元的时域位置相同。
在一些实施例中，目标时频资源单元与对应的竞争资源组位于不同的频域位置，且同一个时域位置的a个目标时频资源单元处于不同的频域位置，与a个目标时频资源单元分别对应的a个竞争资源组处于不同的频域位置，a为小于或等于m的正整数；或，目标时频资源单元与对应的竞争资源组位于相同的频域位置，且同一个时域位置的a个目标时频资源单元处于不同的频域位置，与a个目标时频资源单元分别对应的a个竞争资源组处于不同的频域位置，
综上所述，本实施例提供的直连通信的时频资源竞争装置，通过第一终端在n个时频资源单元中确定目标时频资源单元，以及与目标时频资源单元对应的竞争资源组，在竞争资源组的第一竞争时频资源单元上发送第一竞争信号，根据竞争资源组上的监听结果，确定是否对目标时频资源单元竞争成功，保证了每次竞争过程是基于竞争资源组来动态确定的，并不需要根据周期性信息来进行预测，即便是存在非周期性数据发送需求的终端，也能够在需要发送数据时才进行动态竞争，避免了直连通信时的碰撞问题。
图17是根据一示例性实施例示出的一种终端的框图。例如，终端1700可以是第一终端或第二终端。如图17所示，终端1700可以包括：处理器1701、接收器1702、发射器1703和存储器1704。接收器1702、发射器1703和存储器1704分别通过总线与处理器1701连接。
其中，处理器1701包括一个或者一个以上处理核心，处理器1701通过运行软件程序以及模块以执行本公开实施例提供的直连通信的时频资源竞争方法中终端所执行的方法。存储器1704可用于存储软件程序以及模块。具体的，存储器1704可存储操作系统17041、至少一个功能所需的应用程序模块17042。接收器1702用于接收其他设备发送的通信数据，发射器1703用于向其他设备发送通信数据。
在示例性实施例中，还提供了一种计算机可读存储介质，该计算机可读存储介质为非易失性的计算机可读存储介质，该计算机可读存储介质中存储有计算机程序，存储的计算机程序被处理组件执行时能够实现本公开上述实施例提供的直连通信的时频资源竞争方法。
本公开实施例还提供了一种计算机程序产品，该计算机程序产品中存储有指令，当其在计算机上运行时，使得计算机能够执行本公开实施例提供的直连通信的时频资源竞争方法。
本公开实施例还提供了一种芯片，该芯片包括可编程逻辑电路和/或程序指令，当该芯片运行时能够执行本公开实施例提供的直连通信的时频资源竞争方法。
应当理解的是，在本文中提及的“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本领域技术人员在考虑说明书及实践这里公开的发明后，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 (20)

  1. 一种直连通信的时频资源竞争方法，其特征在于，所述方法包括：
    第一终端在n个时频资源单元中确定出目标时频资源单元，n为正整数；
    所述第一终端确定与所述目标时频资源单元对应的竞争资源组，所述竞争资源组的时域位置早于所述目标时频资源单元的时域位置，所述竞争资源组包括至少两个竞争时频资源单元；
    所述第一终端在所述竞争资源组的第一竞争时频资源单元上发送第一竞争信号；
    所述第一终端监听所述竞争资源组中除所述第一竞争时频资源单元之外的其它竞争时频资源单元；根据所述竞争资源组上的监听结果，确定是否对所述目标时频资源单元竞争成功。
  2. 根据权利要求1所述的方法，其特征在于，所述第一终端根据所述竞争资源组上的监听结果，确定是否对所述目标时频资源单元竞争成功，包括：
    所述第一终端在所述竞争资源组上的监听结果为所述第一竞争信号符合竞争成功条件时，确定对所述目标时频资源单元竞争成功。
  3. 根据权利要求1所述的方法，其特征在于，所述目标时频资源单元是位于相同时域位置的m个目标时频资源单元，每个所述目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
    所述第一终端根据所述竞争资源组上的监听结果，确定是否对所述目标时频资源单元竞争成功，包括：
    对于所述m个目标时频资源单元中的任意一个目标时频资源单元，在对应的所述竞争资源组上的监听结果均为所述第一竞争信号符合竞争成功条件时，确定对所述m个目标时频资源单元竞争成功。
  4. 根据权利要求1所述的方法，其特征在于，所述目标时频资源单元为位于相同时域位置的m个目标时频资源单元，每个所述目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
    所述第一终端根据所述竞争资源组上的监听结果，确定是否对所述目标时频资源单元竞争成功，包括：
    对于所述m个目标时频资源单元，存在k个第一目标时频资源单元在对应的所述竞争资源组上的监听结果为所述第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的所述竞争资源组上的监听结果为所述第一竞争信号不符合竞争成功条件时，确定对所述k个第一目标时频资源单元竞争成功，k为小于m的正整数。
  5. 根据权利要求1所述的方法，其特征在于，所述目标时频资源单元为位于相同时域位置且频域位置连续的m个目标时频资源单元，每个所述目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
    所述第一终端根据所述竞争资源组上的监听结果，确定是否对所述目标时频资源单元竞争成功，包括：
    对于所述m个目标时频资源单元，存在k个第一目标时频资源单元在对应的所述竞争资源组上的监听结果为所述第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的所述竞争资源组上的监听结果为所述第一竞争信号不符合竞争成功条件时，确定对所述k个第一目标时频资源单元中频域位置连续的p个第一目标时频资源单元竞争成功，k为小于或等于m的正整数，p为小于或等于k的正整数。
  6. 根据权利要求2至5任一所述的方法，其特征在于，所述竞争成功条件包括：
    在所述其它竞争时频资源单元中的第二竞争时频资源单元上监听到第二竞争信号，且所述第一竞争信号和所述第二竞争信号各自占用的竞争时频资源单元符合预设时域位置关系；
    和/或，
    在所述其它竞争时频资源单元未监听到第二竞争信号。
  7. 根据权利要求6所述的方法，其特征在于，同一个竞争资源组中的所述至少两个竞争时频资源单元的频域位置相同且时域位置不同；
    所述预设时域位置关系包括：
    所述第一竞争时频资源单元的时域位置早于所述第二竞争时频资源单元的时域位置。
  8. 根据权利要求3至5任一所述的方法，其特征在于，所述m个目标时频资源单元中存在第i个目标时频资源单元和第j个目标时频资源单元；所述第i个目标时频资源单元对应第i个竞争资源组，所述第j个目标时频资源单元对应第j个竞争资源组，i，j为小于或等于m的正整数；
    所述第i个竞争资源组中的第一竞争信号和所述第j个竞争资源组中的第一竞争信号分别对应的第一竞争时频资源单元的时域位置相同。
  9. 根据权利要求1至5任一所述的方法，其特征在于，
    所述目标时频资源单元与对应的所述竞争资源组位于不同的频域位置，且同一个时域位置的a个所述目标时频资源单元处于不同的频域位置，与a个所述目标时频资源单元分别对应的a个所述竞争资源组处于不同的频域位置，a为小于或等于m的正整数；
    或，
    所述目标时频资源单元与对应的所述竞争资源组位于相同的频域位置，且同一个时域位置的a个所述目标时频资源单元处于不同的频域位置，与a个所述目标时频资源单元分别对应的a个所述竞争资源组处于不同的频域位置。
  10. 一种直连通信的时频资源竞争装置，其特征在于，所述装置包括：
    第一确定模块，被配置为在n个时频资源单元中确定出目标时频资源单元，n为正整数；
    第二确定模块，被配置为确定与所述目标时频资源单元对应的竞争资源组，所述竞争资源组的时域位置早于所述目标时频资源单元的时域位置，所述竞争资源组包括至少两个竞争时频资源单元；
    发送模块，被配置为在所述竞争资源组的第一竞争时频资源单元上发送第一竞争信号；
    处理模块，被配置为监听所述竞争资源组中除所述第一竞争时频资源单元 之外的其它竞争时频资源单元；根据所述竞争资源组上的监听结果，确定是否对所述目标时频资源单元竞争成功。
  11. 根据权利要求10所述的装置，其特征在于，
    所述处理模块，被配置为在所述竞争资源组上的监听结果为所述第一竞争信号符合竞争成功条件时，确定对所述目标时频资源单元竞争成功。
  12. 根据权利要求10所述的装置，其特征在于，所述目标时频资源单元是位于相同时域位置的m个目标时频资源单元，每个所述目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
    所述处理模块，被配置为对于所述m个目标时频资源单元中的任意一个目标时频资源单元，在对应的所述竞争资源组上的监听结果均为所述第一竞争信号符合竞争成功条件时，确定对所述m个目标时频资源单元竞争成功。
  13. 根据权利要求10所述的装置，其特征在于，所述目标时频资源单元为位于相同时域位置的m个目标时频资源单元，每个所述目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
    所述处理模块，被配置为对于所述m个目标时频资源单元，存在k个第一目标时频资源单元在对应的所述竞争资源组上的监听结果为所述第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的所述竞争资源组上的监听结果为所述第一竞争信号不符合竞争成功条件时，确定对所述k个第一目标时频资源单元竞争成功，k为小于m的正整数。
  14. 根据权利要求10所述的装置，其特征在于，所述目标时频资源单元为位于相同时域位置且频域位置连续的m个目标时频资源单元，每个所述目标时频资源单元对应各自的竞争资源组，m为大于1的整数；
    所述处理模块，被配置为对于所述m个目标时频资源单元，存在k个第一目标时频资源单元在对应的所述竞争资源组上的监听结果为所述第一竞争信号符合竞争成功条件，且m-k个第二目标时频资源单元在对应的所述竞争资源组上的监听结果为所述第一竞争信号不符合竞争成功条件时，确定对所述k个第 一目标时频资源单元中频域位置连续的p个第一目标时频资源单元竞争成功，k为小于或等于m的正整数，p为小于或等于k的正整数。
  15. 根据权利要11至14任一所述的装置，其特征在于，所述竞争成功条件包括：
    在所述其它竞争时频资源单元中的第二竞争时频资源单元上监听到第二竞争信号，且所述第一竞争信号和所述第二竞争信号各自占用的竞争时频资源单元符合预设时域位置关系；
    和/或，
    在所述其它竞争时频资源单元未监听到第二竞争信号。
  16. 根据权利要求15所述的装置，其特征在于，同一个竞争资源组中的所述至少两个竞争时频资源单元的频域位置相同且时域位置不同；
    所述预设时域位置关系包括：
    所述第一竞争时频资源单元的时域位置早于所述第二竞争时频资源单元的时域位置。
  17. 根据权利要求12至14任一所述的装置，其特征在于，所述m个目标时频资源单元中存在第i个目标时频资源单元和第j个目标时频资源单元；所述第i个目标时频资源单元对应第i个竞争资源组，所述第j个目标时频资源单元对应第j个竞争资源组，i，j为小于或等于m的正整数；
    所述第i个竞争资源组中的第一竞争信号和所述第j个竞争资源组中的第一竞争信号分别对应的第一竞争时频资源单元的时域位置相同。
  18. 根据权利要求10至14任一所述的装置，其特征在于，
    所述目标时频资源单元与对应的所述竞争资源组位于不同的频域位置，且同一个时域位置的a个所述目标时频资源单元处于不同的频域位置，与a个所述目标时频资源单元分别对应的a个所述竞争资源组处于不同的频域位置，a为小于或等于m的正整数；
    或，
    所述目标时频资源单元与对应的所述竞争资源组位于相同的频域位置，且同一个时域位置的a个所述目标时频资源单元处于不同的频域位置，与a个所述目标时频资源单元分别对应的a个所述竞争资源组处于不同的频域位置。
  19. 一种终端，其特征在于，所述终端包括：
    处理器；
    与所述处理器相连的收发器；
    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加载并执行所述可执行指令以实现如权利要求1至9任一所述的直连通信的时频资源竞争方法。
  20. 一种计算机可读存储介质，其特征在于，所述可读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权利要求1至9任一所述的直连通信的时频资源竞争方法。
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