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WO2019148489A1 - 一种资源预留方法及装置、计算机存储介质 - Google Patents

一种资源预留方法及装置、计算机存储介质 Download PDF

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Publication number
WO2019148489A1
WO2019148489A1 PCT/CN2018/075254 CN2018075254W WO2019148489A1 WO 2019148489 A1 WO2019148489 A1 WO 2019148489A1 CN 2018075254 W CN2018075254 W CN 2018075254W WO 2019148489 A1 WO2019148489 A1 WO 2019148489A1
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WIPO (PCT)
Prior art keywords
terminal
channel
resource
pscch
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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PCT/CN2018/075254
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English (en)
French (fr)
Inventor
唐海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR1020207024478A priority Critical patent/KR20200116120A/ko
Priority to AU2018405959A priority patent/AU2018405959A1/en
Priority to JP2020542276A priority patent/JP7213884B2/ja
Priority to EP18903135.4A priority patent/EP3737174B1/en
Priority to PCT/CN2018/075254 priority patent/WO2019148489A1/zh
Priority to CN202010998158.8A priority patent/CN112135273B/zh
Priority to BR112020015790-2A priority patent/BR112020015790A2/pt
Priority to CN201880088550.XA priority patent/CN111713148A/zh
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to MX2020008213A priority patent/MX2020008213A/es
Priority to CA3090344A priority patent/CA3090344C/en
Priority to TW108104294A priority patent/TWI779165B/zh
Publication of WO2019148489A1 publication Critical patent/WO2019148489A1/zh
Priority to US16/944,139 priority patent/US11265764B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26Resource reservation
    • 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
    • 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]
    • H04W4/46Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/02Selection of wireless resources by user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1263Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/25Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/56Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • H04W74/0841Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02Data link layer protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08Upper layer protocols
    • 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/56Allocation or scheduling criteria for wireless resources based on priority criteria

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a resource reservation method and apparatus, and a computer storage medium.
  • the vehicle networking system adopts a Long Term Evolution (LTE)-to-device (D2D, Device to Device) side-link (SL, Sidelink) transmission technology, and the communication data is received by the base station in a conventional LTE system or Different ways of sending, the vehicle networking system uses the terminal-to-terminal direct communication method, so it has higher spectral efficiency and lower transmission delay.
  • LTE Long Term Evolution
  • D2D Device to Device
  • SL Sidelink
  • mode 3 the transmission resources of the terminal are allocated by the base station.
  • mode 4 the terminal determines the transmission resource by means of sensing + reservation.
  • the terminal performs resource selection in the selection window based on the interception result in the listening window.
  • the current resource selection mode and resource reservation mode can avoid the conflict of transmission resources to a certain extent. However, if the geographical locations of the two user equipments (UE, User Equipment) are similar, the set of available resources that they obtain through interception may be It will be very similar, so they may choose the same transmission resource, causing the transmission resources to conflict.
  • an embodiment of the present invention provides a resource reservation method and device, and a computer storage medium.
  • the first terminal sends a first channel, where the first channel is used to determine information about resources selected by the first terminal.
  • the first channel is a physical side control channel (PSCCH), and the PSCCH includes information about resources selected by the first terminal.
  • PSCCH physical side control channel
  • the PSCCH carries the information of the resource selected by the first terminal by using the first side link control information (SCI).
  • SCI first side link control information
  • the first channel is a physical side shared channel (PSSCH), and the PSSCH includes information about resources selected by the first terminal.
  • PSSCH physical side shared channel
  • the PSSCH carries the information of the resource selected by the first terminal by using a Media Access Control Control Element (MAC CE).
  • MAC CE Media Access Control Control Element
  • the first channel is a PSCCH
  • the PSCCH includes first indication information, where the first indication information is used to indicate that the PSSCH corresponding to the PSCCH includes resources selected by the first terminal. information.
  • the PSCCH carries the first indication information by using a second SCI.
  • the first terminal sends the first channel, including:
  • the first terminal sends the first channel in a latest transmission period before the target time, where the target time is a time when the service data arrives, or a time when the upper layer generates the service data.
  • the method further includes:
  • the first terminal can not use the first terminal when the service priority of the first terminal is lower than the service priority of the second terminal.
  • a resource selected by a terminal transmits data or signaling.
  • the method further includes:
  • the service priority of the first terminal is the same as the service priority of the second terminal, when the first terminal sends the first channel earlier than the second terminal sends the second channel
  • the first terminal can use the resource selected by the first terminal to transmit data or signaling; when the first terminal sends the first channel later than the second terminal sends the At the time of the second channel, the first terminal is not able to transmit data or signaling using the resource selected by the first terminal.
  • the first terminal when the first terminal is not able to use the resource selected by the first terminal to transmit data or signaling, the first terminal performs resource sensing again, and performs resource selection again.
  • a sending unit configured to send a first channel, where the first channel is used to determine information about a resource selected by the first terminal.
  • the first channel is a PSCCH
  • the PSCCH includes information about resources selected by the first terminal.
  • the PSCCH carries the information of the resource selected by the first terminal by using the first SCI.
  • the first channel is a PSSCH
  • the PSSCH includes information about resources selected by the first terminal.
  • the PSSCH carries the information of the resource selected by the first terminal by using the MAC CE.
  • the first channel is a PSCCH
  • the PSCCH includes first indication information, where the first indication information is used to indicate that the PSSCH corresponding to the PSCCH includes resources selected by the first terminal. information.
  • the PSCCH carries the first indication information by using a second SCI.
  • the sending unit is configured to send the first channel in a latest transmission period before the target time, where the target time is a time when the service data arrives, or the upper layer generates the service data. time.
  • the device further includes:
  • a receiving unit configured to receive a second channel sent by the second terminal, and determine, according to the second channel, whether the first terminal can use the resource selected in the first selection window;
  • a conflict processing unit configured to: when the resource selected by the first terminal and the resource selected by the second terminal have an overlapping portion, when the service priority of the first terminal is higher than the service priority of the second terminal The first terminal can use the resource selected by the first terminal to transmit data or signaling; when the service priority of the first terminal is lower than the service priority of the second terminal, the first terminal It is not possible to transmit data or signaling using the resources selected by the first terminal.
  • the conflict processing unit is further configured to: when the service priority of the first terminal is the same as the service priority of the second terminal, when the first terminal sends the first channel When the time is earlier than the time at which the second terminal sends the second channel, the first terminal can use the resource selected by the first terminal to transmit data or signaling; when the first terminal sends the When the time of the first channel is later than the time when the second terminal sends the second channel, the first terminal cannot use the resource selected by the first terminal to transmit data or signaling.
  • the resource listening unit when the first terminal is not able to use the resource selected by the first terminal to transmit data or signaling, the resource listening unit performs resource sensing again, and the resource selecting unit performs resource selection again.
  • the computer storage medium provided by the embodiment of the present invention has stored thereon computer executable instructions, and the computer executable instructions are implemented by the processor to implement the resource reservation method.
  • the first terminal sends the first channel, where the first channel is used to determine information about the resource selected by the first terminal.
  • the information of the resource selected by the first terminal is carried by the PSCCH and/or the PSCCH, thereby reducing the probability that the transmission resources between the terminals collide.
  • FIG. 1 is a schematic diagram of a scenario of mode 3 in a car network
  • FIG. 2 is a schematic diagram of a scenario of mode 4 in a car network
  • 3 is a schematic diagram 1 of a terminal listening and selecting transmission resources
  • 4 is a schematic diagram 2 of a terminal listening and selecting transmission resources
  • FIG. 5 is a schematic flowchart of a resource reservation method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of interception and selection according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a resource reservation apparatus according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
  • the transmission resource of the in-vehicle terminal is allocated by a base station (such as an evolved NodeB (eNB) in LTE). Specifically, the base station transmits the vehicle to the vehicle through a downlink (DL, Down Link). The terminal sends a control message for indicating the Grant resource; then, the vehicle terminal transmits the data on the SL according to the resource allocated by the base station.
  • the base station may allocate a single transmission resource for the vehicle terminal, or may allocate a semi-static transmission resource for the terminal.
  • the vehicle terminal adopts a transmission mode of listening and reservation.
  • the vehicle terminal acquires an available transmission resource set by means of interception in the resource pool, and the vehicle terminal randomly selects one resource from the transmission resource set for data transmission. Since the service in the car network system has periodic characteristics, the vehicle terminal usually adopts a semi-static transmission mode, that is, after the vehicle terminal selects one transmission resource, the resource is continuously used in multiple transmission cycles, thereby reducing the resource weight.
  • the probability of selection and resource conflicts The vehicle terminal carries information for reserving the next transmission resource in the control information of the current transmission, so that other terminals can determine whether the resource is reserved and used by the vehicle terminal by detecting the control information of the vehicle terminal. The purpose of resource conflicts.
  • mode 3 is used to indicate that the transmission resource of the in-vehicle terminal is allocated by the base station
  • mode 4 is used to indicate that the transmission resource of the in-vehicle terminal is selected by the terminal autonomously, in the new wireless-vehicle networking technology (NR).
  • NR new wireless-vehicle networking technology
  • a new transmission mode can be defined, which is not limited by the present invention.
  • FIG. 3 is a schematic diagram 1 of the terminal listening and selecting transmission resources.
  • the terminal selects resources in the selection window of [n+T1, n+T2] milliseconds according to the listening result in the past 1 second (that is, the listening window of [n-1000, n] milliseconds). , T1 ⁇ 4; 20 ⁇ T2 ⁇ 100.
  • the process of selecting resources in the selection window by the terminal is as follows:
  • the terminal selects all available resources in the window as a set A, and the terminal performs the following operations on the resources in the set A as follows:
  • the resources of the subframes corresponding to the subframes in the selection window are excluded.
  • the terminal detects a physical sidelink control channel (PSCCH, Physical Sidelink Control Channel) in the listening window, the reference signal received power (RSRP, Reference Signal Receiving Power) of the PSSCH corresponding to the PSCCH is higher than a threshold value. If the next transmission resource reserved in the PSCCH has a resource conflict with the data to be sent by the local terminal, the user excludes the reserved transmission resource in the set A.
  • PSCCH Physical Sidelink Control Channel
  • RSRP Reference Signal Receiving Power
  • the terminal performs Sidelink Received Signal Strength Indication (S-RSSI) detection on the remaining resources in the set A, and sorts according to the energy level, and the lowest energy is 20% (relative to the set A). The number of resources in the resource is put into the set B.
  • S-RSSI Sidelink Received Signal Strength Indication
  • the terminal raises the threshold of the PSSCH-RSRP by 3 dB, and repeats step 1-2 until the number of remaining resources in the set A is greater than or equal to the total resources. 20% of the number.
  • the terminal selects a resource from the medium probability of the set B for data transmission.
  • the terminal When the terminal selects a resource for transmission, the terminal will continue to use the resource to reserve Cresel times. Each time the data is transmitted, Cresel is decremented by 1. When Cresel is reduced to 0, the terminal randomly generates a [0, 1]. The random number is compared with the parameter probResourceKeep (referred to as P_resKeep). If the random number is greater than P_resKeep, the terminal performs resource reselection. If the random number is less than or equal to P_resKeep, the terminal continues to use the resource and resets Cresel.
  • P_resKeep the parameter probResourceKeep
  • FIG. 4 is a schematic diagram 2 of the terminal listening and selecting transmission resources.
  • the time range of the listening window is [nK ⁇ T, n-1] ms
  • the time range of the selection window is [n, n +T]ms, where n is the time at which the service data arrives, or the time at which the upper layer generates the service data.
  • T 100ms
  • the time range of the selection window is [n, n+100] ms.
  • UE1 and UE2 perform resource sensing in the listening window and select appropriate resources in the selection window.
  • the transmission periods of UE1 and UE2 are both 100 ms, and UE1 and UE2 can reuse the same transmission resource in multiple transmission periods.
  • UE1 uses the same transmission resource in 10 transmission periods before time n. (Resource 101)
  • UE2 uses the same transmission resource (resource 111) in 10 transmission cycles before time n.
  • the embodiment of the present invention proposes a new resource reservation method.
  • FIG. 5 is a schematic flowchart of a resource reservation method according to an embodiment of the present invention. As shown in FIG. 5, the resource reservation method includes the following steps:
  • Step 501 The first terminal sends a first channel, where the first channel is used to determine information about resources selected by the first terminal.
  • the first terminal selects a resource in the following manner: the first terminal performs resource sensing in the first listening window, and performs resource selection in the first selection window based on the interception result, where the first terminal A listening window corresponds to a first time range, and the first selection window corresponds to a second time range; wherein the first time range is before the second time range, and the second time range is before the target time
  • the target time is a time when the service data arrives, or a time when the upper layer generates the service data.
  • the process for the first terminal to perform resource selection in the first selection window is as follows:
  • the first terminal uses all the available resources in the first selection window as a set A, and the first terminal performs the exclusion operation on the resources in the set A.
  • the following steps exemplarily provide the main excluded resources:
  • the time unit may be a subframe (that is, 1 ms), and the embodiment of the present invention is not limited thereto, and the time unit may be other durations, such as a slot or a short transmission time interval (sTTI, short). Transmission Time Interval).
  • sTTI short transmission time interval
  • the RSRP of the PSSCH corresponding to the PSCCH is higher than the threshold, and the next transmission resource reserved in the PSCCH has a resource conflict with the data to be sent by the local terminal. , the reserved transmission resource is excluded from the set A.
  • the first terminal raises the threshold of the PSSCH-RSRP (eg, 3 dB), and repeats steps 1-2 until the remaining resources in the set A The number is greater than or equal to the Q% of the total resources.
  • the threshold of the PSSCH-RSRP eg, 3 dB
  • the first terminal selects a resource from the medium probability of the set B for data transmission.
  • the first time range corresponding to the first listening window is a [n-(K+1) ⁇ T, nT-1] subframe or a time slot; wherein n is the target At the moment, T is the first period and K is a positive integer.
  • the second time range corresponding to the first selection window is a [n-T1, n-T2] subframe or a time slot; wherein n is the target time, T1, T2 is greater than or equal to 0, and less than or equal to T An integer, and T1 is greater than T2.
  • the first period is determined by:
  • Manner 1 The first terminal determines the first period based on a transmission period of the service data.
  • Manner 2 The first terminal determines the first period based on the configuration information, where the configuration information may be pre-configuration information or network configuration information.
  • the time range of the first listening window is [n-1100, n-101] ms
  • the first selection window The time range is [n-100, n] ms
  • the first terminal may be UE1 or UE2.
  • UE1 and UE2 perform resource sensing in the listening window, and select appropriate resources in the selection window.
  • UE1 and UE2 have the same first listening window and first selection window as an example. It should be understood that UE1 and UE2 It is also possible to have different first listening windows and/or different first selection windows.
  • the transmission periods of UE1 and UE2 are both 100 ms (it should be understood that UE1 and UE2 may also use different transmission periods), and UE1 and UE2 may reuse the same transmission resource in multiple transmission periods, for example, UE1.
  • the same transmission resource (resource 201) is used in 10 transmission periods before time n, and UE2 uses the same transmission resource (resource 211) in 10 transmission periods before time n.
  • the first terminal carries the information of the selected resource to be used in the data transmission, which may be implemented in the following manner:
  • Manner 1 The first terminal sends a first channel, the first channel is a PSCCH, and the PSCCH includes information of resources selected by the first terminal.
  • the PSCCH carries the information of the resource selected by the first terminal by using the first SCI.
  • Manner 2 The first terminal sends a first channel, where the first channel is a PSSCH, and the PSSCH includes information about resources selected by the first terminal.
  • the PSSCH carries the information of the resource selected by the first terminal by using the MAC CE.
  • Manner 3 The first terminal sends a first channel, the first channel is a PSCCH, and the PSCCH includes first indication information, where the first indication information is used to indicate that the PSSCH corresponding to the PSCCH includes the Information about the resources selected by the first terminal.
  • the PSCCH carries the first indication information by using the second SCI.
  • the first terminal transmits the first channel in a most recent transmission period before the target time.
  • UE1 and UE2 carry information of the selected inactive resources through the PSCCH and/or PSSCH in the transmission period [n-100, n] ms.
  • the first terminal may detect whether the transmission resource of the terminal and the other terminal conflicts with each other based on the PSCCH and/or the PSSCH sent by the other terminal. Specifically, the first terminal receives the second Determining, according to the second channel, whether the first terminal can use the resource selected in the first selection window; if the resource selected by the first terminal and the resource selected by the second terminal overlap In part, it is determined that there is a transmission resource conflict, and the transmission resource conflict is avoided by:
  • the service priority is taken as an example to illustrate that the present invention may also avoid transmission resource conflicts based on other priorities, such as based on short-distance communication data packet priority (PPPP, ProSe Per-Packet Priority).
  • PPPP short-distance communication data packet priority
  • ProSe Per-Packet Priority ProSe Per-Packet Priority
  • the first terminal when the first terminal is unable to use the resource selected by the first terminal to transmit data or signaling, the first terminal performs resource sensing again and performs resource selection again.
  • FIG. 7 is a schematic structural diagram of a resource reservation apparatus according to an embodiment of the present invention. As shown in FIG. 7, the resource reservation apparatus includes:
  • the sending unit 701 is configured to send a first channel, where the first channel is used to determine information about a resource selected by the first terminal.
  • the first channel is a PSCCH
  • the PSCCH includes information about resources selected by the first terminal.
  • the PSCCH carries information of resources selected by the first terminal by using a first SCI.
  • the first channel is a PSSCH
  • the PSSCH includes information about resources selected by the first terminal.
  • the PSSCH carries information of resources selected by the first terminal by using a MAC CE.
  • the first channel is a PSCCH
  • the PSCCH includes first indication information, where the first indication information is used to indicate that the PSSCH corresponding to the PSCCH includes resources selected by the first terminal. information.
  • the PSCCH carries the first indication information by using a second SCI.
  • the sending unit 701 is configured to send the first channel in a latest transmission period before the target time, where the target time is a time when the service data arrives, or a time when the upper layer generates the service data. .
  • the device further includes:
  • the receiving unit 702 is configured to receive a second channel sent by the second terminal, and determine, according to the second channel, whether the first terminal can use the resource selected in the first selection window.
  • the conflict processing unit 703 is configured to: when the resource selected by the first terminal and the resource selected by the second terminal have overlapping portions, when the service priority of the first terminal is higher than the service priority of the second terminal The first terminal can use the resource selected by the first terminal to transmit data or signaling; when the service priority of the first terminal is lower than the service priority of the second terminal, the first The terminal cannot transmit data or signaling using the resource selected by the first terminal.
  • the conflict processing unit 703 is further configured to: if the service priority of the first terminal is the same as the service priority of the second terminal, when the first terminal sends the first When the time of the channel is earlier than the time when the second terminal sends the second channel, the first terminal can use the resource selected by the first terminal to transmit data or signaling; when the first terminal sends the location When the time of the first channel is later than the time when the second terminal sends the second channel, the first terminal cannot use the resource selected by the first terminal to transmit data or signaling.
  • the resource listening unit when the first terminal is unable to use the resource selected by the first terminal to transmit data or signaling, the resource listening unit performs resource sensing again, and the resource selecting unit performs resource selection again.
  • each unit in the resource reservation apparatus shown in FIG. 7 can be understood by referring to the related description of the foregoing resource reservation method.
  • the functions of each unit in the resource reservation device shown in FIG. 7 can be implemented by a program running on a processor, or can be realized by a specific logic circuit.
  • the terminal in the embodiment of the present invention may be an in-vehicle terminal, a handheld terminal, or a palmtop computer (PDA).
  • PDA palmtop computer
  • the personal digital assistant, the wearable terminal, and the like, the network in the embodiment of the present invention may be an NR network, an LTE network, or the like.
  • the resource reservation device may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as an independent product.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • embodiments of the invention are not limited to any specific combination of hardware and software.
  • the embodiment of the present invention further provides a computer storage medium, wherein the computer-executable instructions are stored, and the computer-executable instructions are executed by the processor to implement the resource reservation method of the embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a computer device according to an embodiment of the present invention, and the computer device may be any type of terminal.
  • computer device 100 may include one or more (only one shown) processor 1002 (processor 1002 may include, but is not limited to, a Micro Controller Unit (MCU) or a programmable logic device.
  • a processing device such as an FPGA (Field Programmable Gate Array), a memory 1004 for storing data, and a transmission device 1006 for a communication function.
  • FPGA Field Programmable Gate Array
  • FIG. 8 is merely illustrative and does not limit the structure of the above electronic device.
  • computer device 100 may also include more or fewer components than shown in FIG. 8, or have a different configuration than that shown in FIG.
  • the memory 1004 can be used to store software programs and modules of application software, such as program instructions/modules corresponding to the method in the embodiment of the present invention, and the processor 1002 executes various functional applications by running software programs and modules stored in the memory 1004. And data processing, that is, to achieve the above method.
  • Memory 1004 can include high speed random access memory, and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 1004 can further include memory remotely located relative to processor 1002, which can be connected to computer device 100 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Transmission device 1006 is for receiving or transmitting data via a network.
  • the network specific examples described above may include a wireless network provided by a communication provider of computer device 100.
  • the transmission device 1006 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 1006 can be a radio frequency (RF) module for communicating with the Internet wirelessly.
  • NIC Network Interface Controller
  • RF radio frequency
  • the disclosed method and smart device may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed.
  • the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.
  • the units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one second processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit;
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

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Abstract

本发明公开了一种资源预留方法及装置、计算机存储介质,所述方法包括:第一终端发送第一信道,其中,所述第一信道用于确定所述第一终端选取的资源的信息。

Description

一种资源预留方法及装置、计算机存储介质 技术领域
本发明涉及无线通信技术领域,尤其涉及一种资源预留方法及装置、计算机存储介质。
背景技术
车联网系统采用基于长期演进(LTE,Long Term Evolution)-设备到设备(D2D,Device to Device)的侧行链路(SL,Sidelink)传输技术,与传统的LTE系统中通信数据通过基站接收或者发送的方式不同,车联网系统采用终端到终端直接通信的方式,因此具有更高的频谱效率以及更低的传输时延。
在第三代合作伙伴项目(3GPP,the 3rd Generation Partnership Project)Rel-14中对车联网技术(V2X,Vehicle-to-Everything)进行了标准化,定义了两种传输模式:模式3和模式4。在模式3中,终端的传输资源由基站分配。在模式4中,终端采用侦听(sensing)+预留(reservation)的方式确定传输资源。
对于上述模式4而言,终端基于侦听窗内的侦听结果,在选择窗内进行资源选取。目前的资源选取方式和资源预留方式可以在一定程度上避免传输资源的冲突,但是如果两个用户设备(UE,User Equipment)的地理位置相近,他们通过侦听的方式获取的可用资源集合可能会非常类似,因此他们有可能选取相同的传输资源,导致传输资源发生冲突。
发明内容
为解决上述技术问题,本发明实施例提供了一种资源预留方法及装置、 计算机存储介质。
本发明实施例提供的资源预留方法,包括:
第一终端发送第一信道,其中,所述第一信道用于确定所述第一终端选取的资源的信息。
本发明实施例中,所述第一信道为物理侧行控制信道(PSCCH,Physical Sidelink Control Channel),所述PSCCH中包括所述第一终端选取的资源的信息。
本发明实施例中,所述PSCCH通过第一侧行链路控制信息(SCI,Sidelink Control Information)携带所述第一终端选取的资源的信息。
本发明实施例中,所述第一信道为物理侧行共享信道(PSSCH,Physical Sidelink Shared Channel),所述PSSCH中包括所述第一终端选取的资源的信息。
本发明实施例中,所述PSSCH通过媒体接入控制控制单元(MAC CE,Media Access Control Control Element)携带所述第一终端选取的资源的信息。
本发明实施例中,所述第一信道为PSCCH,所述PSCCH中包括第一指示信息,所述第一指示信息用于指示所述PSCCH对应的PSSCH中包括所述第一终端选取的资源的信息。
本发明实施例中,所述PSCCH通过第二SCI携带所述第一指示信息。
本发明实施例中,所述第一终端发送第一信道,包括:
所述第一终端在目标时刻之前的最近一次传输周期中发送所述第一信道,其中,所述目标时刻为业务数据到达的时刻,或者是高层生成业务数据的时刻。
本发明实施例中,所述方法还包括:
所述第一终端接收第二终端发送的第二信道,基于所述第二信道确定 所述第一终端是否可以使用在所述第一选择窗内选取的资源;
如果所述第一终端选取的资源和所述第二终端选取的资源有重叠部分,当所述第一终端的业务优先级高于所述第二终端的业务优先级时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的业务优先级低于所述第二终端的业务优先级时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
本发明实施例中,所述方法还包括:
如果所述第一终端的业务优先级与所述第二终端的业务优先级相同,当所述第一终端的发送所述第一信道的时间早于所述第二终端发送所述第二信道的时间时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的发送所述第一信道的时间晚于所述第二终端发送所述第二信道的时间时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
本发明实施例中,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令时,所述第一终端重新进行资源侦听,并重新进行资源选取。
本发明实施例提供的资源预留装置,包括:
发送单元,用于发送第一信道,其中,所述第一信道用于确定所述第一终端选取的资源的信息。
本发明实施例中,所述第一信道为PSCCH,所述PSCCH中包括所述第一终端选取的资源的信息。
本发明实施例中,所述PSCCH通过第一SCI携带所述第一终端选取的资源的信息。
本发明实施例中,所述第一信道为PSSCH,所述PSSCH中包括所述第一终端选取的资源的信息。
本发明实施例中,所述PSSCH通过MAC CE携带所述第一终端选取的资源的信息。
本发明实施例中,所述第一信道为PSCCH,所述PSCCH中包括第一指示信息,所述第一指示信息用于指示所述PSCCH对应的PSSCH中包括所述第一终端选取的资源的信息。
本发明实施例中,所述PSCCH通过第二SCI携带所述第一指示信息。
本发明实施例中,所述发送单元,用于在目标时刻之前的最近一次传输周期中发送所述第一信道,其中,所述目标时刻为业务数据到达的时刻,或者是高层生成业务数据的时刻。
本发明实施例中,所述装置还包括:
接收单元,用于接收第二终端发送的第二信道,基于所述第二信道确定所述第一终端是否可以使用在所述第一选择窗内选取的资源;
冲突处理单元,用于如果所述第一终端选取的资源和所述第二终端选取的资源有重叠部分,当所述第一终端的业务优先级高于所述第二终端的业务优先级时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的业务优先级低于所述第二终端的业务优先级时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
本发明实施例中,所述冲突处理单元,还用于如果所述第一终端的业务优先级与所述第二终端的业务优先级相同,当所述第一终端的发送所述第一信道的时间早于所述第二终端发送所述第二信道的时间时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的发送所述第一信道的时间晚于所述第二终端发送所述第二信道的时间时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
本发明实施例中,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令时,所述资源侦听单元重新进行资源侦听,所述资源选取 单元重新进行资源选取。
本发明实施例提供的计算机存储介质,其上存储有计算机可执行指令,该计算机可执行指令被处理器执行时实现上述的资源预留方法。
本发明实施例的技术方案中,第一终端发送第一信道,其中,所述第一信道用于确定所述第一终端选取的资源的信息。采用本发明实施例的技术方案,通过PSCCH和/或PSCCH来携带所述第一终端选取的资源的信息,从而降低了终端之间的传输资源发生冲突的概率。
附图说明
此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部分,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1为车联网中的模式3的场景示意图;
图2为车联网中的模式4的场景示意图;
图3为终端对传输资源进行侦听及选择的示意图一;
图4为终端对传输资源进行侦听及选择的示意图二;
图5为本发明实施例的资源预留方法的流程示意图;
图6为本发明实施例的侦听及选择的示意图;
图7为本发明实施例的资源预留装置的结构组成示意图;
图8本发明实施例的计算机设备的结构组成示意图。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点与技术内容,下面结合附图对本发明实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本发明实施例。
为便于理解本发明实施例的技术方案,以下分别对车联网中的模式3 和模式4进行解释说明。
模式3:如图1所示,车载终端的传输资源是由基站(如LTE中的演进基站(eNB,evolved NodeB))分配的,具体地,基站通过下行链路(DL,Down Link)向车载终端下发用于指示授权(Grant)资源的控制消息;而后,车载终端根据基站分配的资源在SL上进行数据的发送。在模式3中,基站可以为车载终端分配单次传输的资源,也可以为终端分配半静态传输的资源。
模式4:如图2所示,车载终端采用侦听+预留的传输方式。车载终端在资源池中通过侦听的方式获取可用的传输资源集合,车载终端从该传输资源集合中随机选取一个资源进行数据的传输。由于车联网系统中的业务具有周期性特征,因此车载终端通常采用半静态传输的方式,即车载终端选取一个传输资源后,就会在多个传输周期中持续的使用该资源,从而降低资源重选以及资源冲突的概率。车载终端会在本次传输的控制信息中携带预留下次传输资源的信息,从而使得其他终端可以通过检测该车载终端的控制信息判断这块资源是否被该车载终端预留和使用,达到降低资源冲突的目的。
需要说明的是,在LTE-V2X中分别使用模式3表示车载终端的传输资源是由基站分配的,用模式4表示车载终端的传输资源是终端自主选取的,在新无线-车联网技术(NR-V2X,New Radio-Vehicle-to-Everything)中,可以定义新的传输模式,本发明对此不做限定。
图3为终端对传输资源进行侦听及选择的示意图一,如图3所示,对于每个侧行链路的处理过程(sidelink process),当在时刻n有新的数据包到达需要进行资源选取时,终端会根据过去1秒(即[n-1000,n]毫秒的侦听窗)中的侦听结果,在[n+T1,n+T2]毫秒的选择窗内进行资源选取,其中,T1≤4;20≤T2≤100。本示例中,终端在选择窗内进行资源选取的过程如 下:
注:以下只是给出了终端通过侦听进行资源选取和预留的主要步骤,具体的步骤可以参照3GPP的技术规范36.213版本14.3.0。
终端将选择窗内所有可用的资源作为一个集合A,终端对集合A中的资源进行如下排除操作:
1.如果终端在侦听窗内的某些子帧没有侦听到结果,则这些子帧在选择窗内对应的子帧上的资源被排除掉。
2.如果终端在侦听窗内检测到物理侧行链路控制信道(PSCCH,Physical Sidelink Control Channel),PSCCH对应的PSSCH的参考信号接收功率(RSRP,Reference Signal Receiving Power)高于门限值,并且该PSCCH中预留的下一个传输资源与本终端待发送的数据存在资源冲突,则用户在集合A中排除掉该预留的传输资源。
3.终端对集合A中剩余的资源进行侧行链路接收信号强度指示(S-RSSI,Sidelink Received Signal Strength Indication)检测,并且按照能量高低进行排序,把能量最低的20%(相对于集合A中的资源个数)资源放入集合B。
这里,如果集合A中剩余的资源个数小于总资源个数的20%,终端会提升PSSCH-RSRP的门限3dB,并且重复步骤1-2,直到集合A中剩余的资源个数大于等于总资源数的20%。
4.终端从集合B中等概率的选取一个资源进行数据传输。
当终端选取了一个资源进行传输,则该终端会持续使用预留这个资源Cresel次,每传输一次数据,Cresel减1,当Cresel减到0时,终端会随机生成一个[0,1]之间的随机数,并且与参数probResourceKeep(简称为P_resKeep)进行比较,如果随机数大于P_resKeep,则终端进行资源重选,如果随机数小于等于P_resKeep,终端继续使用该资源,并且重置Cresel。
图4为终端对传输资源进行侦听及选择的示意图二,在LTE-V2X中,侦听窗的时间范围是[n-K×T,n-1]ms,选择窗的时间范围是[n,n+T]ms,其中,n是业务数据到达的时刻,或者是高层生成业务数据的时刻,一个示例中,T=100ms,K=10,则:侦听窗的时间范围为[n-1000,n-1]ms 选择窗的时间范围为[n,n+100]ms。UE1和UE2在侦听窗内进行资源侦听,并且在选择窗内选取合适的资源。
如图4所示,UE1和UE2的传输周期均为100ms,UE1和UE2可以在多个传输周期中重复使用相同的传输资源,例如UE1在时刻n之前的10个传输周期中使用相同的传输资源(资源101),UE2在时刻n之前的10个传输周期中使用相同的传输资源(资源111)。UE1在侦听窗[n-1000,n-1]ms内进行资源侦听,基于侦听结果在选择窗[n,n+100]ms内选取资源102,UE2在侦听窗[n-1000,n-1]ms内进行资源侦听,基于侦听结果在选择窗[n,n+100]ms内选取资源112,并且UE1和UE2在随后的X(如X=10)个周期内持续使用选择的传输资源。
在某些情况下,会出现UE1和UE2选取的传输资源有重叠,如资源102和资源112重合或者有部分重叠,从而导致UE1和UE2在之后的X个传输周期内一直存在传输冲突,会降低其他用户的检测概率,UE1和UE2之间也互相侦听不到对方的存在。为此,本发明实施例提出一种新的资源预留方法。
图5为本发明实施例的资源预留方法的流程示意图,如图5所示,所述资源预留方法包括以下步骤:
步骤501:第一终端发送第一信道,其中,所述第一信道用于确定所述第一终端选取的资源的信息。
本发明实施例中,所述第一终端通过以下方式选取资源:第一终端在第一侦听窗内进行资源侦听,并基于侦听结果在第一选择窗内进行资源选 取,所述第一侦听窗对应第一时间范围,所述第一选择窗对应第二时间范围;其中,所述第一时间范围位于所述第二时间范围之前,且所述第二时间范围位于目标时刻之前,所述目标时刻为业务数据到达的时刻,或者是高层生成业务数据的时刻。
在一可选的实施方式中,第一终端在第一选择窗内进行资源选取的过程如下:
第一终端将第一选择窗内所有可用的资源作为一个集合A,第一终端对集合A中的资源进行排除操作,下面示例性的给出主要的排除资源的步骤:
1.如果第一终端在第一侦听窗内的某些时间单元没有侦听到结果,则这些时间单元在选择窗内对应的时间单元上的资源被排除掉。这里,所述时间单元可以是子帧(也即1ms),本发明实施例不局限于此,所述时间单元还可以是其他时长,如时隙(slot)或者短传输时间间隔(sTTI,short Transmission Time Interval)。
2.如果第一终端在第一侦听窗内检测到PSCCH,PSCCH对应的PSSCH的RSRP高于门限值,并且该PSCCH中预留的下一个传输资源与本终端待发送的数据存在资源冲突,则在集合A中排除掉该预留的传输资源。
3.第一终端对集合A中剩余的资源进行S-RSSI检测,并且按照能量高低进行排序,把能量最低的Q%(相对于集合A中的资源个数)资源放入集合B,例如Q=20。
这里,如果集合A中剩余的资源个数小于总资源个数的Q%,第一终端会提升PSSCH-RSRP的门限(如3dB),并且重复步骤1-2,直到集合A中剩余的资源个数大于等于总资源数的Q%。
4.第一终端从集合B中等概率的选取一个资源进行数据传输。
本发明实施例中,所述第一侦听窗对应的所述第一时间范围为 [n-(K+1)×T,n-T-1]子帧或时隙;其中,n为所述目标时刻,T为第一周期,K为正整数。所述第一选择窗对应的所述第二时间范围为[n-T1,n-T2]子帧或时隙;其中,n为所述目标时刻,T1,T2是大于等于0,小于等于T的整数,并且T1大于T2。
在一实施方式中,所述第一周期通过以下方式确定:
方式一:所述第一终端基于所述业务数据的传输周期,确定所述第一周期。
方式二:所述第一终端基于配置信息,确定所述第一周期,所述配置信息可以是预配置信息或者是网络配置信息。
参照图6,一个示例中,T=100ms,K=10,T1=100ms,T2=0ms,则:第一侦听窗的时间范围为[n-1100,n-101]ms,第一选择窗的时间范围为[n-100,n]ms,第一终端可以是UE1,也可以是UE2。UE1和UE2在侦听窗内进行资源侦听,并且在选择窗内选取合适的资源,这里以UE1和UE2具有相同的第一侦听窗和第一选择窗为例,应理解,UE1和UE2也可以具有不同的第一侦听窗和/或不同的第一选择窗。
如图6所示,UE1和UE2的传输周期均为100ms(应理解,UE1和UE2也可以使用不同的传输周期),UE1和UE2可以在多个传输周期中重复使用相同的传输资源,例如UE1在时刻n之前的10个传输周期中使用相同的传输资源(资源201),UE2在时刻n之前的10个传输周期中使用相同的传输资源(资源211)。UE1在侦听窗[n-1100,n-101]ms内进行资源侦听,基于侦听结果在选择窗[n-100,n]ms内选取资源202,UE2在侦听窗[n-1100,n-101]ms内进行资源侦听,基于侦听结果在选择窗[n-100,n]ms内选取资源212,并且UE1和UE2可以在随后的X(如X=10)个周期内持续使用选择的传输资源。
本发明实施例中,所述第一终端在数据传输中携带所选取的待用的资 源的信息,具体可以通过以下方式实现:
方式一:所述第一终端发送第一信道,所述第一信道为PSCCH,所述PSCCH中包括所述第一终端选取的资源的信息。
例如:所述PSCCH通过第一SCI携带所述第一终端选取的资源的信息。
方式二:所述第一终端发送第一信道,所述第一信道为PSSCH,所述PSSCH中包括所述第一终端选取的资源的信息。
例如:所述PSSCH通过MAC CE携带所述第一终端选取的资源的信息。
方式三:所述第一终端发送第一信道,所述第一信道为PSCCH,所述PSCCH中包括第一指示信息,所述第一指示信息用于指示所述PSCCH对应的PSSCH中包括所述第一终端选取的资源的信息。
例如:所述PSCCH通过第二SCI携带所述第一指示信息。
在一实施方式中,所述第一终端在目标时刻之前的最近一次传输周期中发送所述第一信道。在一示例中,如图6所示,UE1和UE2在传输周期[n-100,n]ms中通过PSCCH和/或PSSCH携带选取的待用的资源的信息。
本发明实施例中,所述第一终端基于其他终端发送的PSCCH和/或PSSCH可以检测本终端与其他终端的传输资源是否发生冲突,具体地,所述第一终端接收第二终端发送的第二信道,基于所述第二信道确定所述第一终端是否可以使用在所述第一选择窗内选取的资源;如果所述第一终端选取的资源和所述第二终端选取的资源有重叠部分,则确定存在传输资源冲突,通过以下方式来避免传输资源冲突:
1)根据用户优先级:当所述第一终端的业务优先级高于所述第二终端的业务优先级时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的业务优先级低于所述第二终端的业务优先级 时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
需要说明的是,本实施例中以业务优先级为例来说明,本发明也可以基于其他的优先级来避免传输资源冲突,如基于近距离通信数据分组优先级(PPPP,ProSe Per-Packet Priority),或者其他能够区分用户或者业务优先等级的信息,本发明对此不做限定。
2)根据资源选取的时间顺序:如果所述第一终端的业务优先级与所述第二终端的业务优先级相同,当所述第一终端的发送所述第一信道的时间早于所述第二终端发送所述第二信道的时间时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的发送所述第一信道的时间晚于所述第二终端发送所述第二信道的时间时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
在一实施方式中,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令时,所述第一终端重新进行资源侦听,并重新进行资源选取。
图7为本发明实施例的资源预留装置的结构组成示意图,如图7所示,所述资源预留装置包括:
发送单元701,用于发送第一信道,其中,所述第一信道用于确定所述第一终端选取的资源的信息。
在一实施方式中,所述第一信道为PSCCH,所述PSCCH中包括所述第一终端选取的资源的信息。
在一实施方式中,所述PSCCH通过第一SCI携带所述第一终端选取的资源的信息。
在一实施方式中,所述第一信道为PSSCH,所述PSSCH中包括所述第一终端选取的资源的信息。
在一实施方式中,所述PSSCH通过MAC CE携带所述第一终端选取的 资源的信息。
在一实施方式中,所述第一信道为PSCCH,所述PSCCH中包括第一指示信息,所述第一指示信息用于指示所述PSCCH对应的PSSCH中包括所述第一终端选取的资源的信息。
在一实施方式中,所述PSCCH通过第二SCI携带所述第一指示信息。
在一实施方式中,所述发送单元701,用于在目标时刻之前的最近一次传输周期中发送所述第一信道,所述目标时刻为业务数据到达的时刻,或者是高层生成业务数据的时刻。
在一实施方式中,所述装置还包括:
接收单元702,用于接收第二终端发送的第二信道,基于所述第二信道确定所述第一终端是否可以使用在所述第一选择窗内选取的资源;
冲突处理单元703,用于如果所述第一终端选取的资源和所述第二终端选取的资源有重叠部分,当所述第一终端的业务优先级高于所述第二终端的业务优先级时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的业务优先级低于所述第二终端的业务优先级时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
在一实施方式中,所述冲突处理单元703,还用于如果所述第一终端的业务优先级与所述第二终端的业务优先级相同,当所述第一终端的发送所述第一信道的时间早于所述第二终端发送所述第二信道的时间时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的发送所述第一信道的时间晚于所述第二终端发送所述第二信道的时间时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
在一实施方式中,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令时,所述资源侦听单元重新进行资源侦听,所述资源选取单元重新进行资源选取。
本领域技术人员应当理解,图7所示的资源预留装置中的各单元的实现功能可参照前述资源预留方法的相关描述而理解。图7所示的资源预留装置中的各单元的功能可通过运行于处理器上的程序而实现,也可通过具体的逻辑电路而实现。
本发明实施例的全部技术方案,不仅适用于车联网系统中,也可以适用于其他端到端通信系统中,本发明实施例中的所述终端可以为车载终端、手持终端、掌上电脑(PDA,Personal Digital Assistant)、可穿戴式终端等等,本发明实施例中的所述网络可以为NR网络、LTE网络等等。
本发明实施例上述资源预留装置如果以软件功能模块的形式实现并作为独立的产品销售或使用时,也可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各个实施例所述方法的全部或部分。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read Only Memory)、磁碟或者光盘等各种可以存储程序代码的介质。这样,本发明实施例不限制于任何特定的硬件和软件结合。
相应地,本发明实施例还提供一种计算机存储介质,其中存储有计算机可执行指令,该计算机可执行指令被处理器执行时实现本发明实施例的上述资源预留方法。
图8为本发明实施例的计算机设备的结构组成示意图,该计算机设备可以是任意类型的终端。如图8所示,计算机设备100可以包括一个或多个(图中仅示出一个)处理器1002(处理器1002可以包括但不限于微处理器(MCU,Micro Controller Unit)或可编程逻辑器件(FPGA,Field Programmable Gate Array)等的处理装置)、用于存储数据的存储器1004、 以及用于通信功能的传输装置1006。本领域普通技术人员可以理解,图8所示的结构仅为示意,其并不对上述电子装置的结构造成限定。例如,计算机设备100还可包括比图8中所示更多或者更少的组件,或者具有与图8所示不同的配置。
存储器1004可用于存储应用软件的软件程序以及模块,如本发明实施例中的方法对应的程序指令/模块,处理器1002通过运行存储在存储器1004内的软件程序以及模块,从而执行各种功能应用以及数据处理,即实现上述的方法。存储器1004可包括高速随机存储器,还可包括非易失性存储器,如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中,存储器1004可进一步包括相对于处理器1002远程设置的存储器,这些远程存储器可以通过网络连接至计算机设备100。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输装置1006用于经由一个网络接收或者发送数据。上述的网络具体实例可包括计算机设备100的通信供应商提供的无线网络。在一个实例中,传输装置1006包括一个网络适配器(NIC,Network Interface Controller),其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中,传输装置1006可以为射频(RF,Radio Frequency)模块,其用于通过无线方式与互联网进行通讯。
本发明实施例所记载的技术方案之间,在不冲突的情况下,可以任意组合。
在本发明所提供的几个实施例中,应该理解到,所揭露的方法和智能设备,可以通过其它的方式实现。以上所描述的设备实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,如:多个单元或组件可以结合,或可以集成到另一个系统,或一些特征可以忽略,或不执行。另外,所显示或讨论的各组成部 分相互之间的耦合、或直接耦合、或通信连接可以是通过一些接口,设备或单元的间接耦合或通信连接,可以是电性的、机械的或其它形式的。
上述作为分离部件说明的单元可以是、或也可以不是物理上分开的,作为单元显示的部件可以是、或也可以不是物理单元,即可以位于一个地方,也可以分布到多个网络单元上;可以根据实际的需要选择其中的部分或全部单元来实现本实施例方案的目的。
另外,在本发明各实施例中的各功能单元可以全部集成在一个第二处理单元中,也可以是各单元分别单独作为一个单元,也可以两个或两个以上单元集成在一个单元中;上述集成的单元既可以采用硬件的形式实现,也可以采用硬件加软件功能单元的形式实现。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。

Claims (23)

  1. 一种资源预留方法,所述方法包括:
    第一终端发送第一信道,其中,所述第一信道用于确定所述第一终端选取的资源的信息。
  2. 根据权利要求1所述的方法,其中,所述第一信道为物理侧行控制信道PSCCH,所述PSCCH中包括所述第一终端选取的资源的信息。
  3. 根据权利要求2所述的方法,其中,所述PSCCH通过第一侧行链路控制信息SCI携带所述第一终端选取的资源的信息。
  4. 根据权利要求1所述的方法,其中,所述第一信道为物理侧行共享信道PSSCH,所述PSSCH中包括所述第一终端选取的资源的信息。
  5. 根据权利要求4所述的方法,其中,所述PSSCH通过媒体接入控制控制单元MAC CE携带所述第一终端选取的资源的信息。
  6. 根据权利要求1所述的方法,其中,所述第一信道为PSCCH,所述PSCCH中包括第一指示信息,所述第一指示信息用于指示所述PSCCH对应的PSSCH中包括所述第一终端选取的资源的信息。
  7. 根据权利要求6所述的方法,其中,所述PSCCH通过第二SCI携带所述第一指示信息。
  8. 根据权利要求1至7任一项所述的方法,其中,所述第一终端发送第一信道,包括:
    所述第一终端在目标时刻之前的最近一次传输周期中发送所述第一信道,其中,所述目标时刻为业务数据到达的时刻,或者是高层生成业务数据的时刻。
  9. 根据权利要求1至8任一项所述的方法,其中,所述方法还包括:
    所述第一终端接收第二终端发送的第二信道,基于所述第二信道确定所述第一终端是否可以使用在所述第一选择窗内选取的资源;
    如果所述第一终端选取的资源和所述第二终端选取的资源有重叠部分,当所述第一终端的业务优先级高于所述第二终端的业务优先级时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的业务优先级低于所述第二终端的业务优先级时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
  10. 根据权利要求9所述的方法,其中,所述方法还包括:
    如果所述第一终端的业务优先级与所述第二终端的业务优先级相同,当所述第一终端的发送所述第一信道的时间早于所述第二终端发送所述第二信道的时间时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的发送所述第一信道的时间晚于所述第二终端发送所述第二信道的时间时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
  11. 根据权利要求9或10所述的方法,其中,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令时,所述第一终端重新进行资源侦听,并重新进行资源选取。
  12. 一种资源预留装置,所述装置包括:
    发送单元,用于发送第一信道,其中,所述第一信道用于确定所述第一终端选取的资源的信息。
  13. 根据权利要求12所述的装置,其中,所述第一信道为PSCCH,所述PSCCH中包括所述第一终端选取的资源的信息。
  14. 根据权利要求13所述的装置,其中,所述PSCCH通过第一SCI携带所述第一终端选取的资源的信息。
  15. 根据权利要求12所述的装置,其中,所述第一信道为PSSCH,所述PSSCH中包括所述第一终端选取的资源的信息。
  16. 根据权利要求15所述的装置,其中,所述PSSCH通过MAC CE 携带所述第一终端选取的资源的信息。
  17. 根据权利要求12所述的装置,其中,所述第一信道为PSCCH,所述PSCCH中包括第一指示信息,所述第一指示信息用于指示所述PSCCH对应的PSSCH中包括所述第一终端选取的资源的信息。
  18. 根据权利要求17所述的装置,其中,所述PSCCH通过第二SCI携带所述第一指示信息。
  19. 根据权利要求12至18任一项所述的装置,其中,所述发送单元,用于在目标时刻之前的最近一次传输周期中发送所述第一信道,其中,所述目标时刻为业务数据到达的时刻,或者是高层生成业务数据的时刻。
  20. 根据权利要求12至19任一项所述的装置,其中,所述装置还包括:
    接收单元,用于接收第二终端发送的第二信道,基于所述第二信道确定所述第一终端是否可以使用在所述第一选择窗内选取的资源;
    冲突处理单元,用于如果所述第一终端选取的资源和所述第二终端选取的资源有重叠部分,当所述第一终端的业务优先级高于所述第二终端的业务优先级时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的业务优先级低于所述第二终端的业务优先级时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
  21. 根据权利要求20所述的装置,其中,所述冲突处理单元,还用于如果所述第一终端的业务优先级与所述第二终端的业务优先级相同,当所述第一终端的发送所述第一信道的时间早于所述第二终端发送所述第二信道的时间时,所述第一终端能够使用所述第一终端选取的资源传输数据或信令;当所述第一终端的发送所述第一信道的时间晚于所述第 二终端发送所述第二信道的时间时,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令。
  22. 根据权利要求20或21所述的装置,其中,所述第一终端不能够使用所述第一终端选取的资源传输数据或信令时,所述资源侦听单元重新进行资源侦听,所述资源选取单元重新进行资源选取。
  23. 一种计算机存储介质,其上存储有计算机可执行指令,该计算机可执行指令被处理器执行时实现权利要求1至11任一项所述的方法步骤。
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