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WO2020164012A1 - Procédé et dispositif pour la détermination d'un ensemble de ressources de liaison latérale - Google Patents

Procédé et dispositif pour la détermination d'un ensemble de ressources de liaison latérale Download PDF

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Publication number
WO2020164012A1
WO2020164012A1 PCT/CN2019/074965 CN2019074965W WO2020164012A1 WO 2020164012 A1 WO2020164012 A1 WO 2020164012A1 CN 2019074965 W CN2019074965 W CN 2019074965W WO 2020164012 A1 WO2020164012 A1 WO 2020164012A1
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Prior art keywords
candidate
resource set
resource
side link
granularity
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PCT/CN2019/074965
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English (en)
Chinese (zh)
Inventor
纪鹏宇
李国荣
张健
张磊
王昕�
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Fujitsu Ltd
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Fujitsu Ltd
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Priority to PCT/CN2019/074965 priority Critical patent/WO2020164012A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—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
    • H04W72/00—Local resource management

Definitions

  • the embodiments of the present invention relate to the field of communication technologies, and in particular, to a method and device for determining a side link resource set.
  • V2X Vehicle to Everything
  • the sending device in V2X can directly communicate with the receiving device through a sidelink.
  • the side link is a newly defined interface for V2X.
  • terminal devices can independently select side link resources (such as Mode 2).
  • the terminal device can obtain the transmission resources of the side link through the process of sensing detection + resource selection, wherein the sensing (sensing) can be continuously performed to obtain the resource occupancy in the resource pool.
  • New Radio (NR) V2X is currently one of the research projects standardized by Rel-16. Compared with LTE V2X, NR V2X needs to support many new scenarios and new services (such as remote driving, autonomous driving, and fleet). Driving, etc.), need to meet higher technical indicators (high reliability, low latency, high data rate, etc.).
  • the transmission block (TB, Transmission Block) in NR V2X may occupy multiple time slots (slots), and data may also be transmitted with a time domain length less than a time slot (such as mini-slot);
  • a time slot such as mini-slot
  • embodiments of the present invention provide a method and device for determining a side link resource set.
  • a method for determining a set of side link resources including:
  • the terminal device determines a candidate granularity for edge link resource selection
  • the resource set used for side link data transmission is determined according to the transformation granularity.
  • an apparatus for determining a side link resource set including:
  • a candidate granularity determining unit which determines a candidate granularity for edge link resource selection
  • a transformation granularity determining unit which transforms the candidate granularity according to the current resource occupancy to obtain the transformation granularity
  • a resource set determining unit which determines a resource set used for side link data transmission according to the transformation granularity.
  • a method for determining a set of side link resources including:
  • the terminal device determines at least two candidate granularities for edge link resource selection.
  • an apparatus for determining a side link resource set including:
  • a candidate granularity determining unit that determines at least two candidate granularities for edge link resource selection
  • a resource set determining unit that determines a resource set used for side link data transmission according to the at least two candidate granularities.
  • a communication system including:
  • a terminal device which determines a candidate granularity for edge link resource selection, transforms the candidate granularity according to the current resource occupancy to obtain a transform granularity, and determines the granularity used for side link data transmission according to the transform granularity Collection of resources; or,
  • It determines at least two candidate granularities used for edge link resource selection, and determines a resource set used for edge link data transmission according to the at least two candidate granularities.
  • the terminal device determines a candidate granularity for edge link resource selection, transforms the candidate granularity according to the current resource occupancy to obtain the transform granularity, and according to the transform granularity Determine the resource set used for side link data transmission; or, the terminal device determines at least two candidate granularities for side link resource selection; and determine the resources used for side link data transmission according to the at least two candidate granularities set.
  • the side link resources can be obtained in a timely and accurate manner, thereby reducing transmission delay to a certain extent and effectively improving resource utilization.
  • Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is an exemplary diagram of a perception window and a detection window according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a method for determining a set of side link resources according to an embodiment of the present invention
  • FIG. 5 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention.
  • FIG. 6 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention.
  • FIG. 7 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention.
  • FIG. 8 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention.
  • FIG. 9 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention.
  • FIG. 10 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of an apparatus for determining a side link resource set according to an embodiment of the present invention.
  • FIG. 12 is another schematic diagram of an apparatus for determining a side link resource set according to an embodiment of the present invention.
  • Figure 13 is a schematic diagram of a network device according to an embodiment of the present invention.
  • Fig. 14 is a schematic diagram of a terminal device according to an embodiment of the present invention.
  • the terms “first”, “second”, etc. are used to distinguish different elements in terms of numelations, but they do not indicate the spatial arrangement or temporal order of these elements. These elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising”, “including”, “having” and the like refer to the existence of the stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.
  • the term "communication network” or “wireless communication network” can refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), and Enhanced Long Term Evolution (LTE-A, LTE-A). Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-A
  • LTE-A LTE-A
  • Advanced Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to any stage of communication protocol, for example, it can include but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G , New Radio (NR, New Radio), etc., and/or other currently known or future communication protocols.
  • 1G generation
  • 2G 2.5G
  • 2.75G 3G
  • 4G 4G
  • New Radio NR, New Radio
  • Network device refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device.
  • Network equipment may include but is not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller), etc.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), etc., and may also include remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low-power node (such as femeto, pico, etc.).
  • NodeB Node B
  • eNodeB or eNB evolved Node B
  • gNB 5G base station
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low-power node such as femeto, pico, etc.
  • base station can include some or all of their functions, and each base station can provide communication coverage for a specific geographic area.
  • the term "cell” may refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "User Equipment” (UE, User Equipment) or “Terminal Equipment” (TE, Terminal Equipment or Terminal Device), for example, refers to a device that accesses a communication network through a network device and receives network services.
  • the terminal device may be fixed or mobile, and may also be called a mobile station (MS, Mobile Station), terminal, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, etc.
  • terminal devices may include but are not limited to the following devices: cellular phones (Cellular Phone), personal digital assistants (PDAs, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, Cordless phones, smart phones, smart watches, digital cameras, etc.
  • cellular phones Cellular Phone
  • PDAs personal digital assistants
  • wireless modems wireless communication devices
  • handheld devices machine-type communication devices
  • laptop computers Cordless phones
  • smart phones smart watches, digital cameras, etc.
  • a terminal device may also be a machine or device that performs monitoring or measurement.
  • it may include, but is not limited to: Machine Type Communication (MTC) terminals, Vehicle-mounted communication terminals, device to device (D2D, Device to Device) terminals, machine to machine (M2M, Machine to Machine) terminals, etc.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • network side or “network device side” refers to a side of the network, which may be a certain base station, or may include one or more network devices as described above.
  • user side or “terminal side” or “terminal device side” refers to a side of a user or a terminal, which may be a certain UE, or may include one or more terminal devices as above.
  • device can refer to network equipment or terminal equipment.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention, which schematically illustrates a case where a terminal device and a network device are taken as an example.
  • the communication system 100 may include a network device 101 and terminal devices 102 and 103.
  • FIG. 1 only takes two terminal devices and one network device as an example for description, but the embodiment of the present invention is not limited to this.
  • the network device 101 and the terminal devices 102 and 103 can perform existing services or service transfers that can be implemented in the future.
  • these services may include, but are not limited to: enhanced Mobile Broadband (eMBB), massive machine type communication (mMTC, massive Machine Type Communication), and high-reliability, low-latency communication (URLLC, Ultra-Reliable and Low). -Latency Communication), etc.
  • FIG. 1 shows that two terminal devices 102 and 103 are both within the coverage of the network device 101, but the present invention is not limited to this.
  • the two terminal devices 102 and 103 may not be within the coverage area of the network device 101, or one terminal device 102 is within the coverage area of the network device 101 and the other terminal device 103 is outside the coverage area of the network device 101.
  • side link transmission can be performed between the two terminal devices 102 and 103.
  • the two terminal devices 102 and 103 may both perform side link transmission within the coverage area of the network device 101 to implement V2X communication, or both may perform side link transmission outside the coverage area of the network device 101 to implement V2X communication.
  • one terminal device 102 is within the coverage area of the network device 101 and the other terminal device 103 is outside the coverage area of the network device 101 to perform side link transmission to implement V2X communication.
  • the terminal device 102 and/or 103 can independently select the side link resource (ie Mode 2 is used).
  • the side link transmission can be independent of the network device 101, that is, the network device 101 is optional. of.
  • the embodiment of the present invention can also combine the autonomous selection of side link resources (that is, Mode 2) and the allocation of side link resources by the network device (that is, Mode 1); the embodiment of the invention does not limit this.
  • terminal equipment can obtain side link transmission resources through a process of sensing detection + resource selection, where sensing can be continuously performed to obtain resource occupancy in the resource pool. For example, the terminal device can estimate the resource occupancy in the next period of time (called the selection window) based on the resource occupancy in the previous period of time (called the perception window).
  • the selection window the resource occupancy in the next period of time
  • the perception window the resource occupancy in the previous period of time
  • FIG. 2 is an example diagram of the sensing window and the detection window of the embodiment of the present invention.
  • the side link control information SCI, Sidelink Control Information
  • SCI Sidelink Control Information
  • the physical layer of the terminal device obtains the resource selection granularity R x,y from the higher layer (for example, the media access control (MAC, Media Access Control) layer); this granularity can represent a subframe A series of continuous sub-channels within each sub-channel, each sub-channel includes more than one continuous physical resource block (PRB, Physical Resource Block), the number of PRBs can be determined by the resource pool, the resource pool is configured or pre-configured by the network equipment (such as the base station) Configuration; the set of R x, y resources in all subframes in the entire selection window (hereinafter referred to as R x, y candidate resources) is initialized and defined as Set A.
  • R x, y candidate resources is initialized and defined as Set A.
  • the terminal device may exclude part of the candidate resources in Set A according to the result of detection in the perception window before the data to be sent arrives. For example, the following R x,y candidate resources need to be excluded:
  • the RSRP threshold is increased by 3dB, and the initial set A is excluded again , Until the number of R x,y candidate resources remaining in Set A is greater than or equal to 20% of the initial total.
  • R x, y candidate resources in Set A into Set B in the order of S-RSSI from small to large, until the number of R x, y candidate resources in Set B is greater than or equal to R x in Set A , y 20% of the initial total number of candidate resources; among them, Set B is an initially empty set, and S-RSSI represents the linear average of the signal strengths of all sub-channels in R x,y candidate resources.
  • the physical layer of the terminal device can report Set B to the MAC layer, and the MAC layer makes a random selection in Set B and selects a candidate resource for data transmission.
  • a TB to be sent may occupy multiple time slots (slots), and side link data may also be transmitted with a time domain length less than a time slot (such as mini-slot); if LTE V2X is still used If the resource selection scheme is adopted, the side link resources may not be obtained in time and accurately, thereby increasing transmission delay and reducing resource utilization.
  • the granularity R x, y for selecting side link resources is not limited to one subframe or time slot, and its time domain length can also be changed, for example, it can occupy mini-slot or multi-slot. slot etc.
  • the granularity R x,y of resource selection can be changed, or there may be multiple granularities in a resource selection, such as R 1 x,y , R 2 x,y .
  • the embodiment of the present invention provides a method for determining a side link resource set, which is described from the terminal device side.
  • the terminal device serves as the sending end and can send side link data to another terminal device.
  • Fig. 3 is a schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention. As shown in Fig. 3, the method includes:
  • Step 301 The terminal device determines a candidate granularity for edge link resource selection
  • Step 302 The terminal device transforms the candidate granularity according to the current resource occupancy to obtain the transform granularity
  • Step 303 The terminal device determines a resource set used for side link data transmission according to the transformation granularity.
  • the physical layer of the terminal device obtains a candidate granularity R x,y for side link resource selection from the MAC layer; and the physical layer of the terminal device
  • the MAC layer reports a resource set (for example, Set B) used for side link data transmission.
  • Figure 3 above only schematically illustrates the embodiment of the present invention, but the present invention is not limited to this.
  • the order of execution between the various steps can be adjusted appropriately, and some other steps can be added or some steps can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 3 above.
  • the time domain length of the candidate granularity and the transformation granularity are different, but the total number of resource elements (RE, Resource Element) is the same.
  • R x, y indicated by a higher layer indicates 4 consecutive sub-channels in a slot
  • the transformation granularity R'x, y may indicate 2 consecutive sub-channels. Two consecutive sub-channels in the same slot.
  • Fig. 4 is an example diagram of candidate granularity and transformation granularity of the embodiment of the present invention.
  • candidate granularity R x,y (granularity 1) represents 4 consecutive sub-channels in a slot
  • the transformation granularity R'x, y (granularity 2) represents 2 consecutive sub-channels in 2 slots
  • the transformation granularity R" x, y (granularity 3) represents 1 sub-channel in 4 slots.
  • the candidate granularity sums The time domain length of the transformation granularity is different, but the total number of resource particles is the same, so the number of bits that can be carried is also the same.
  • the time domain lengths of the candidate granularity and the transformation granularity are different and the total number of resource particles are different; the terminal device may also segment the data to be sent according to the resource size corresponding to the transformation granularity.
  • the physical layer may change the candidate resource granularity R x, y to R'x, y , and the number of bits that can be carried by the R'x , y is smaller than the R x, y , and the time domain of the R'x, y
  • the length is a candidate value in the optional set configured or pre-configured by the higher layer.
  • the MAC layer is required to shorten and segment the resource size obtained by the TB to be sent according to the new transformation granularity, and then send it.
  • the terminal device may be determined based on the current occupancy size conversion resources, for example in the case of traffic requiring lower latency, the candidate size may be used in FIG. 4 R x, y, or converting a particle size R 'x, y In the case that the business does not require high delay, the transformation granularity R” x, y of Figure 4 can be used, and so on.
  • the terminal device can change the candidate granularity according to the current resource occupancy.
  • the embodiment of the present invention does not perform a specific conversion method. limit.
  • the first resource set used for resource selection may be determined according to the candidate granularity; according to the received side link control information (SCI) and the side link data corresponding to the side link control information indicated Reference signal received power (RSRP) of a channel (for example, PSSCH), one or more candidate resources are excluded from the first resource set; and the number of candidate resources remaining in the first resource set is less than a first threshold
  • SCI side link control information
  • RSRP Reference signal received power
  • the remaining candidate resources in the first resource set are increased from small to large according to the average signal strength of the sub-channel Move into the second resource set in the order of the second resource set; and when the number of candidate resources in the second resource set is greater than or equal to the second threshold, determine the second resource set as the side link A collection of resources for sending data.
  • the first threshold and the second threshold are numbers of a predetermined proportion of the total number of initial candidate resources in the first resource set.
  • determining a resource set used for side link data transmission according to the transformation granularity may specifically include: determining a third resource set used for resource selection according to the transformation granularity; and according to the received side link Control information (SCI) and reference signal received power (RSRP) corresponding to the side link data channel indicated by the side link control information, exclude one or more candidate resources from the third resource set; When the number of candidate resources remaining in the third resource set is greater than or equal to the third threshold, the remaining candidate resources in the third resource set are moved to the fourth in the order of the signal strength average value of the subchannels from small to large.
  • SCI side link Control information
  • RSRP reference signal received power
  • the fourth resource set In a resource set; and in the case where the number of candidate resources in the fourth resource set is greater than or equal to a fourth threshold, determining the fourth resource set as the resource set for side link data transmission . In the case that the number of remaining candidate resources in the third resource set is less than the third threshold, the reference signal received power (RSRP) threshold of the side link data channel is increased.
  • RSRP reference signal received power
  • Fig. 5 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention. As shown in Fig. 5, the method includes:
  • Step 501 The physical layer obtains a candidate granularity R x,y from the MAC layer;
  • Step 502 The physical layer determines Set A1 (first resource set) for resource selection according to the candidate granularity R x,y ;
  • Step 503 The physical layer obtains Set A11 after excluding one or more candidate resources from the Set A1 according to the received SCI and the RSRP corresponding to the side link data channel indicated by the SCI;
  • the RSRP threshold used to exclude candidate resources can be T1.
  • Step 504 The physical layer determines whether the number of candidate resources in Set A11 is less than a first threshold (for example, it is 20% of the initial total in Set A1, but the present invention is not limited to this); If the number is less than the first threshold, step 505 is executed, and if the number of candidate resources in the Set A11 is greater than or equal to the first threshold, step 510 is executed.
  • a first threshold for example, it is 20% of the initial total in Set A1, but the present invention is not limited to this
  • Step 505 The physical layer transforms the candidate granularity R x, y according to the current resource occupancy to obtain the transform granularity R'x, y ;
  • Step 506 the physical layer transforms particle size R 'x, determined Set A2 (third set of resources) in accordance with a selected resource;
  • Step 507 The physical layer obtains Set A21 after excluding one or more candidate resources from Set A2 according to the received SCI and the RSRP corresponding to the side link data channel indicated by the SCI;
  • RSRP threshold used to exclude candidate resources can be T2
  • T1 and T2 can be the same or different.
  • Step 508 The physical layer determines whether the number of candidate resources in Set A21 is less than a third threshold (for example, 20% of the initial total in Set A2, but the present invention is not limited to this); the number of candidate resources in Set A21 If the number is less than the third threshold, step 509 is executed, and if the number of candidate resources in the Set A21 is greater than or equal to the third threshold, step 512 is executed.
  • a third threshold for example, 20% of the initial total in Set A2, but the present invention is not limited to this
  • Step 509 increase the RSRP threshold T1, for example, increase T1 by 3dB, and then perform step 503.
  • Step 510 Move the candidate resources in the Set A11 into Set B1 (the second resource set, initially an empty set) in the order of the average signal strength of the subchannels from small to large; and
  • Step 511 In the case that the number of candidate resources in Set B1 is greater than or equal to a second threshold (for example, it is 20% of the initial total in Set A1, but the present invention is not limited to this), determine Set B1 Is the set of resources used for side link data transmission Set B.
  • a second threshold for example, it is 20% of the initial total in Set A1, but the present invention is not limited to this
  • Step 512 Move the candidate resources in Set A21 into Set B2 (the fourth resource set, initially an empty set) in the order of the average signal strength of the sub-channels from small to large;
  • Step 513 The number of candidate resources in Set B2 is greater than or equal to a fourth threshold (for example, 20% of the initial total in Set A2, but the present invention is not limited to this. For example, it may be the same as the initial total in Set A1. In the case of 20% of the sum of the initial total in Set A2), the Set B2 is determined as the resource set Set B used for side link data transmission.
  • a fourth threshold for example, 20% of the initial total in Set A2, but the present invention is not limited to this. For example, it may be the same as the initial total in Set A1. In the case of 20% of the sum of the initial total in Set A2), the Set B2 is determined as the resource set Set B used for side link data transmission.
  • Step 514 The physical layer reports the Set B to the MAC layer.
  • FIG. 5 shows a case where Set A1 and Set A2 are processed separately, but the present invention is not limited to this, for example, Set A1 and Set A2 may be mixed for processing.
  • FIG. 6 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention. As shown in FIG. 6, the method includes:
  • Step 601 The physical layer obtains a candidate granularity R x,y from the MAC layer;
  • Step 602 The physical layer determines Set A1 (first resource set) for resource selection according to the candidate granularity R x,y ;
  • Step 603 The physical layer obtains Set A11 after excluding one or more candidate resources from the Set A1 according to the received SCI and the RSRP corresponding to the side link data channel indicated by the SCI;
  • the RSRP threshold used to exclude candidate resources can be T1.
  • Step 604 The physical layer determines whether the number of candidate resources in Set A11 is less than a first threshold (for example, 20% of the initial total in Set A1, but the present invention is not limited to this); the number of candidate resources in Set A11 If the number is less than the first threshold, step 605 is executed, and if the number of candidate resources in the Set A11 is greater than or equal to the first threshold, step 611 is executed.
  • a first threshold for example, 20% of the initial total in Set A1, but the present invention is not limited to this
  • Step 605 The physical layer transforms the candidate granularity R x,y according to the current resource occupancy to obtain the transform granularity R'x,y ;
  • Step 606 the physical layer transforms particle size R 'x, determined Set A2 (third set of resources) in accordance with a selected resource;
  • Step 607 The physical layer obtains Set A21 after excluding one or more candidate resources from Set A2 according to the received SCI and the RSRP corresponding to the side link data channel indicated by the SCI;
  • RSRP threshold used to exclude candidate resources can be T2
  • T1 and T2 can be the same or different.
  • Step 608 Combine Set A11 (the third resource set after excluding candidate resources) and Set A21 (the first resource set after excluding candidate resources) to form a collection Set A22;
  • Step 609 The physical layer determines whether the number of candidate resources in Set A22 is less than a third threshold (for example, 20% of the initial total in Set A2, but the present invention is not limited to this, and may also be 20% of the initial total in Set A1. %); in the case that the number of candidate resources in the Set A22 is less than the third threshold, execute step 610, and in the case that the number of the candidate resources in the Set A22 is greater than or equal to the third threshold, execute Step 613.
  • a third threshold for example, 20% of the initial total in Set A2, but the present invention is not limited to this, and may also be 20% of the initial total in Set A1.
  • Step 610 increase the RSRP threshold T1, for example, increase T1 by 3dB, and then perform step 603.
  • Step 611 Move the candidate resources in the Set A11 into Set B1 (the second resource set, initially an empty set) in the order of the average signal strength of the sub-channels from small to large; and
  • Step 612 In the case that the number of candidate resources in Set B1 is greater than or equal to a second threshold (for example, it is 20% of the initial total in Set A1, but the present invention is not limited to this), determine Set B1 Is the set of resources used for side link data transmission Set B.
  • a second threshold for example, it is 20% of the initial total in Set A1, but the present invention is not limited to this
  • Step 613 Move the candidate resources in Set A22 into Set B2 (the fourth resource set, initially an empty set) in the order of the average signal strength of the sub-channels from small to large;
  • Step 614 The number of candidate resources in Set B2 is greater than or equal to the fourth threshold (for example, 20% of the initial total in Set A2, but the present invention is not limited to this. For example, it may be the same as the initial total in Set A1. In the case of 20% of the sum of the initial total in Set A2), the Set B2 is determined as the resource set Set B used for side link data transmission.
  • the fourth threshold for example, 20% of the initial total in Set A2
  • the fourth threshold for example, 20% of the initial total in Set A2
  • the Set B2 is determined as the resource set Set B used for side link data transmission.
  • Step 615 The physical layer reports the Set B to the MAC layer.
  • Figures 5 and 6 show the case where the candidate granularity R x, y and the transformation granularity R'x, y are processed together, but the present invention is not limited to this, and the candidate granularity R x, y may be used instead of the transformation granularity R ' x,y are processed.
  • FIG. 7 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention. As shown in FIG. 7, the method includes:
  • Step 701 The physical layer obtains a candidate granularity R x,y from the MAC layer;
  • Step 702 The physical layer transforms the candidate granularity R x,y according to the current resource occupancy to obtain a transform granularity R'x,y ;
  • Step 703 The physical layer determines Set A2 (third resource set) for resource selection according to the transformation granularity R'x, y ;
  • Step 704 the physical layer obtains Set A21 after excluding one or more candidate resources from Set A2 according to the received SCI and the RSRP corresponding to the side link data channel indicated by the SCI;
  • the RSRP threshold used to exclude candidate resources can be T2.
  • Step 705 The physical layer determines whether the number of candidate resources in Set A21 is less than a third threshold (for example, 20% of the initial total in Set A2, but the present invention is not limited to this); the number of candidate resources in Set A21 If the number is less than the third threshold, step 706 is executed, and if the number of candidate resources in the Set A21 is greater than or equal to the third threshold, step 707 is executed.
  • a third threshold for example, 20% of the initial total in Set A2, but the present invention is not limited to this
  • Step 706 increase the RSRP threshold T2, for example, increase T2 by 3 dB, and then perform step 704.
  • Step 707 Move the candidate resources in Set A21 into Set B2 (the fourth resource set, initially an empty set) in the order of the average signal strength of the subchannels from small to large;
  • Step 708 The number of candidate resources in Set B2 is greater than or equal to a fourth threshold (for example, 20% of the initial total in Set A2, but the present invention is not limited to this. For example, it may be the same as the initial total in Set A1. In the case of 20% of the sum of the initial total in Set A2), the Set B2 is determined as the resource set Set B used for side link data transmission.
  • a fourth threshold for example, 20% of the initial total in Set A2, but the present invention is not limited to this. For example, it may be the same as the initial total in Set A1. In the case of 20% of the sum of the initial total in Set A2), the Set B2 is determined as the resource set Set B used for side link data transmission.
  • Step 709 The physical layer reports the Set B to the MAC layer.
  • FIGS. 5 to 7 only take one transformation granularity R'x, y as an example for illustration, but the present invention is not limited to this, for example, it can be gradually increased according to the number of supported slots/symbols.
  • the transformation granularity R'x, y forms multiple transformation granularities, so that multiple steps in FIGS.
  • 5 to 7 can be repeatedly executed (for example, repeating step 505 to step 508, after performing M1 granularity transformations, it is still not satisfied In the case of performing step 509; for another example, repeating step 605 to step 609, and performing step 610 when the granularity change is still not satisfied after M2 granularity transformation; for another example, repeating step 702 to step 705, Step 706 is executed again if the granularity is still not satisfied after M3 granularity transformations.
  • the time domain length of the transformation granularity can be configured or pre-configured, and candidate resources can be supplemented in sequence according to multiple transformation granularities, so as to obtain Set B that meets the condition.
  • the candidate granularity and the transformation granularity are determined by at least one of service priority, delay requirement, and channel congestion; the time domain length of the transformation granularity is predefined or preconfigured or determined by High-level configuration.
  • R 'x, y E.g., MAC layer notifies the physical layer of a R x, y, can be converted by specific priority, delay requirement of the service and the CBR (channel congestion degree measurement value) determined size, etc.
  • R 'x, y The time domain length of R'x, y can be one or more consecutive slots/symbols in the high-level configuration or pre-configured resource pool, the specific number is a series of optional values configured or pre-configured by the high-level, or in a Select the range. For example, corresponding to a business, there may be a maximum time length value (the maximum number of slots or symbols), then the time domain length of R'x, y is an optional value smaller than the maximum time length value.
  • the terminal device determines a candidate granularity for edge link resource selection, transforms the candidate granularity according to the current resource occupancy to obtain the transform granularity, and determines the granularity for the edge link according to the transform granularity.
  • a collection of resources for sending road data can be obtained in a timely and accurate manner, thereby reducing transmission delay to a certain extent and effectively improving resource utilization.
  • the embodiment of the present invention provides a method for determining a side link resource set, which is described from the terminal device side.
  • the terminal device is used as the sender of information and can send side link data to another terminal device.
  • FIG. 8 is a schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention. As shown in FIG. 8, the method includes:
  • Step 801 The terminal device determines at least two candidate granularities for edge link resource selection.
  • Step 802 The terminal device determines a resource set used for side link data transmission according to the at least two candidate granularities.
  • FIG. 8 only schematically illustrates the embodiment of the present invention, but the present invention is not limited thereto.
  • the order of execution between the various steps can be adjusted appropriately, and some other steps can be added or some steps can be reduced.
  • Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of FIG. 8 above.
  • the time domain lengths of the at least two candidate granularities are different, but the total number of resource elements (RE, Resource Element) is the same.
  • a higher layer (such as the MAC layer, but the present invention is not limited to this) can indicate R 1 x,y and R 2 x,y to the physical layer; R 1 x,y represents 4 consecutive sub-channels in a slot (sub-channel ), R 2 x,y represents the same two consecutive sub-channels in two consecutive slots.
  • R 1 x,y represents 4 consecutive sub-channels in a slot (sub-channel )
  • R 2 x,y represents the same two consecutive sub-channels in two consecutive slots.
  • the time domain lengths of the at least two candidate granularities are different and the total number of resource particles (RE) are different; the terminal device may also segment the data to be sent according to the resource size corresponding to the transformation granularity.
  • RE resource particles
  • the terminal device can determine at least two candidate granularities according to the current resource occupancy.
  • the embodiment of the present invention does not determine the specific Way to limit.
  • the following is a schematic description of the process of sensing detection + resource selection in the embodiment of the present invention from the operation of the physical layer of the terminal device.
  • the first candidate granularity and the second candidate granularity are taken as examples for description. The case of more than two candidate granularities can be handled similarly, and the details are not repeated below.
  • the physical layer of the terminal device obtains the at least two candidate granularities for side link resource selection from a medium access control (MAC) layer, and performs resource selection together according to the at least two candidate granularities To determine a set of resources used for side link data transmission; and the physical layer of the terminal device reports a set of resources used for side link data transmission to the MAC layer.
  • MAC medium access control
  • FIG. 9 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention. As shown in FIG. 9, the method includes:
  • Step 901 The physical layer obtains at least two candidate granularities R 1 x,y and R 2 x,y from the MAC layer;
  • Step 902 The physical layer determines Set A3 (the fifth resource set) for resource selection according to R 1 x,y and R 2 x,y ;
  • Set A1 for resource selection can be determined according to R 1 x,y
  • Set A2 for resource selection can be determined according to R 2 x,y
  • Set A1 and Set A2 are combined to obtain Set A3.
  • Step 903 The physical layer obtains Set A31 after excluding one or more candidate resources from the Set A3 according to the received SCI and the RSRP corresponding to the side link data channel indicated by the SCI;
  • Step 904 The physical layer determines whether the number of candidate resources in Set A31 is less than a fifth threshold (for example, 20% of the initial total in Set A3, but the present invention is not limited to this); the number of candidate resources in Set A31 is If the number is less than the fifth threshold, step 905 is executed, and if the number of candidate resources in the Set A31 is greater than or equal to the fifth threshold, step 906 is executed.
  • a fifth threshold for example, 20% of the initial total in Set A3, but the present invention is not limited to this
  • Step 905 increase the RSRP threshold T3, for example, increase T3 by 3dB, and then perform step 903.
  • Step 906 Move the candidate resources in Set A31 into Set B3 (sixth resource set, initially an empty set) in the order of the average signal strength of the subchannels from small to large;
  • Step 907 In the case that the number of candidate resources in Set B3 is greater than or equal to the sixth threshold (for example, it is 20% of the initial total in Set A3, but the present invention is not limited to this), determine Set B3 Is the set of resources used for side link data transmission Set B.
  • the sixth threshold for example, it is 20% of the initial total in Set A3, but the present invention is not limited to this
  • Step 908 The physical layer reports the Set B to the MAC layer.
  • the physical layer obtains at least two candidate granularities from the MAC layer, and reports a resource set to the MAC layer.
  • the MAC layer notifies the physical layer of multiple candidate granularities.
  • the total RE resources corresponding to these candidate granularities may be the same or different, and may correspond to the same or different TB sizes.
  • R 1 x,y and R 2 x,y have different time domain lengths.
  • Set A is initialized as the sum of candidate resources of different granularities, such as the sum of all candidate resources of R 1 x,y and R 2 x,y in the selection window. All candidate resources of different sizes are combined and calculated, and then the resources are excluded. Process and resource selection process. After the whole process is over, the set B mixed with R 1 x,y and R 2 x,y is reported to the MAC layer, and the MAC layer can randomly select a candidate resource for data transmission.
  • the physical layer of the terminal device obtains the at least two candidate granularities for side link resource selection from a medium access control (MAC) layer, and performs resource selection respectively according to the at least two candidate granularities To determine one or more resource sets used for side link data transmission; and the physical layer of the terminal device reports one or more resource sets used for side link data transmission to the MAC layer.
  • MAC medium access control
  • FIG. 10 is another schematic diagram of a method for determining a side link resource set according to an embodiment of the present invention. As shown in FIG. 10, the method includes:
  • Step 1001 The physical layer obtains at least two candidate granularities R 1 x,y and R 2 x,y from the MAC layer;
  • Step 1002 The physical layer determines Set A4 (seventh resource set) for resource selection according to R 1 x, y ;
  • Step 1003 The physical layer obtains Set A41 after excluding one or more candidate resources from the Set A4 according to the received SCI and the RSRP corresponding to the side link data channel indicated by the SCI;
  • the RSRP threshold used to exclude candidate resources can be T4.
  • Step 1004 The physical layer determines whether the number of candidate resources in Set A41 is less than a seventh threshold (for example, 20% of the initial total in Set A4, but the present invention is not limited to this); the number of candidate resources in Set A41 If the number is less than the seventh threshold, step 1012 is executed, and if the number of candidate resources in the Set A41 is greater than or equal to the seventh threshold, step 1005 is executed.
  • a seventh threshold for example, 20% of the initial total in Set A4, but the present invention is not limited to this
  • Step 1005 Move the candidate resources in Set A41 into Set B4 (the eighth resource set, initially an empty set) in the order of the average signal strength of the subchannels from small to large;
  • Step 1006 In the case that the number of candidate resources in Set B4 is greater than or equal to the eighth threshold (for example, it is 20% of the initial total in Set A4, but the present invention is not limited to this), it is determined that Set B4 is The set of resources used for side link data transmission.
  • the eighth threshold for example, it is 20% of the initial total in Set A4, but the present invention is not limited to this
  • Step 1007 The physical layer determines Set A5 (ninth resource set) for resource selection according to R 2 x,y ;
  • Step 1008 The physical layer obtains Set A51 after excluding one or more candidate resources from Set A5 according to the received SCI and the RSRP corresponding to the side link data channel indicated by the SCI;
  • Step 1009 The physical layer determines whether the number of candidate resources in Set A51 is less than a ninth threshold (for example, 20% of the initial total in Set A5, but the present invention is not limited to this); the number of candidate resources in Set A51 is If the number is less than the ninth threshold, step 1012 is executed, and if the number of candidate resources in the Set A51 is greater than or equal to the ninth threshold, step 1010 is executed.
  • a ninth threshold for example, 20% of the initial total in Set A5, but the present invention is not limited to this
  • Step 1010 Move the candidate resources in Set A51 into Set B5 (the tenth resource set, initially an empty set) in the order of the average signal strength of the sub-channels from small to large;
  • Step 1011 In the case that the number of candidate resources in Set B5 is greater than or equal to the tenth threshold (for example, it is 20% of the initial total in Set A5, but the present invention is not limited to this), it is determined that Set B5 is The set of resources used for side link data transmission.
  • the tenth threshold for example, it is 20% of the initial total in Set A5, but the present invention is not limited to this
  • Step 1012 increase the RSRP threshold T4 and/or T5, for example, increase T4 and/or T5 by 3dB, and then perform step 1003 and/or step 1008.
  • Step 1013 The physical layer reports the Set B4 and/or Set B5 to the MAC layer.
  • the physical layer obtains at least two candidate granularities from the MAC layer, and reports one or more resource sets to the MAC layer.
  • the physical layer may obtain multiple candidate granularities from the MAC layer.
  • the total RE resources of these candidate granularities may be the same or different, and may correspond to the same or different TB sizes.
  • R 1 x,y and R 2 x,y have different time domain lengths.
  • candidate resources of different granularities can be calculated separately, that is, there can be multiple Set A and Set B, and the number of them can be the same as the number of obtained candidate granularities.
  • the candidate resources of R 1 x, y form Set A1 and Set B1
  • the candidate resources of R 2 x, y form Set A2 and Set B2; after resource elimination, the remaining candidate resources in the corresponding Set A are used to arrive With a candidate granularity of 20% (for example, R 1 x, y ), the Set B corresponding to R 1 x, y is reported, and the upper layer performs random resource selection and data transmission in it.
  • the RSRP threshold can be increased by 3dB , And then calculate the remaining candidate resources in Set A corresponding to each granularity, until Set A that meets 20% appears; you can use the first resource granularity that satisfies the 20% requirement, and randomly select resources in its corresponding Set B . That is, when the Set A corresponding to all granularities does not meet 20%, the RSRP threshold is increased.
  • the physical layer of the terminal device obtains N candidate granularities for side link resource selection from the medium access control (MAC) layer, and performs resource selection respectively according to the N candidate granularities to determine N The resource sets used for side link data transmission; and the physical layer of the terminal device reports to the MAC layer N resource sets used for side link data transmission, where N is greater than or equal to 2 The integer.
  • MAC medium access control
  • the steps of obtaining Set A and Set B all work independently, for example, corresponding to R 1 x,y and R 2 x,y to obtain corresponding Set A1 and Set B1 and Set A2 and Set B2 respectively .
  • the physical layer reports the corresponding candidate resources in Set B1 and Set B2 to the MAC layer respectively.
  • the MAC layer selects a corresponding Set B according to the current service requirements, and randomly selects a candidate resource for data transmission.
  • the terminal device determines at least two candidate granularities used for edge link resource selection; and determines a resource set used for side link data transmission according to the at least two candidate granularities.
  • the side link resources can be obtained in a timely and accurate manner, thereby reducing transmission delay to a certain extent and effectively improving resource utilization.
  • the embodiment of the present invention provides an apparatus for determining a side link resource set.
  • the device may be, for example, a terminal device, or it may be one or some parts or components of the terminal device.
  • the content of this embodiment 3 that is the same as that of embodiment 1 will not be repeated.
  • FIG. 11 is a schematic diagram of an apparatus for determining a side link resource set according to an embodiment of the present invention. As shown in FIG. 11, the apparatus 1100 for determining a side link resource set includes:
  • a candidate granularity determining unit 1101 which determines a candidate granularity for edge link resource selection
  • a transformation granularity determining unit 1102 which transforms the candidate granularity according to the current resource occupancy to obtain the transformation granularity
  • the resource set determining unit 1103 determines a resource set used for side link data transmission according to the transformation granularity.
  • the time domain length of the candidate granularity and the transformation granularity are different but the total number of resource particles is the same.
  • the device may further include:
  • a data segmentation unit 1104 which segments the data to be sent according to the resource size corresponding to the transformation granularity.
  • the transformation granularity determining unit 1102 may be further configured to: determine a first resource set used for resource selection according to the candidate granularity; according to the received side link control information and corresponding to the side link The reference signal received power of the side link data channel indicated by the path control information, one or more candidate resources are excluded from the first resource set; and the number of candidate resources remaining in the first resource set is less than In the case of the first threshold, transform the candidate granularity according to the current resource occupancy to obtain the transform granularity.
  • the resource set determining unit 1103 may be configured to: if the number of candidate resources remaining in the first resource set is greater than or equal to the first threshold, the first resource The remaining candidate resources in the set are moved into the second resource set in the order of the signal strength average of the subchannels from small to large; and when the number of candidate resources in the second resource set is greater than or equal to the second threshold And determine the second resource set as the resource set used for side link data transmission.
  • the resource set determining unit 1103 may be used to:
  • the third resource set used for resource selection is determined according to the transformation granularity; according to the received side link control information and the reference signal received power corresponding to the side link data channel indicated by the side link control information, from Exclude one or more candidate resources from the third resource set;
  • the remaining candidate resources in the third resource set are in the descending order of the average signal strength of the subchannels Move into the fourth resource set; and when the number of candidate resources in the fourth resource set is greater than or equal to the fourth threshold, determine the fourth resource set to be used for side link data transmission Collection of resources;
  • the threshold of the reference signal received power of the side link data channel is increased.
  • the resource set determining unit 1103 may be used to:
  • the third resource set used for resource selection is determined according to the transformation granularity, and according to the received side link control information and the reference signal received power corresponding to the side link data channel indicated by the side link control information, from Excluding one or more candidate resources from the third resource set; combining the third resource set after excluding candidate resources and the first resource set after excluding candidate resources to form a collection;
  • the remaining candidate resources in the collection are moved into the fourth resource set in the order of the average signal strength of the subchannels from small to large And when the number of candidate resources in the fourth resource set is greater than or equal to a fourth threshold, determining the fourth resource set as the resource set for side link data transmission;
  • the threshold of the reference signal received power of the side link data channel is increased.
  • the third threshold is the number of a predetermined proportion of the total number of initial candidate resources in the third resource set
  • the fourth threshold is a predetermined proportion of the total number of initial candidate resources in the third resource set; or the fourth threshold is the total number of initial candidate resources in the first resource set and the initial candidate resources in the third resource set The number of predetermined proportions of the total sum of resources.
  • the candidate granularity and the transformation granularity are determined by at least one of service priority, delay requirement, and channel congestion; the time domain length of the transformation granularity is predefined or preconfigured or determined by High-level configuration.
  • the physical layer of the terminal device obtains the candidate granularity for side link resource selection from the medium access control layer; and the physical layer of the terminal device reports a granularity to the medium access control layer.
  • the set of resources used for side link data transmission is not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to the physical layer of the terminal device.
  • the device 1100 for determining the side link resource set may also include other components or modules.
  • the specific content of these components or modules reference may be made to related technologies.
  • FIG. 11 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the foregoing components or modules can be implemented by hardware facilities such as a processor, a memory, a transmitter, and a receiver; the implementation of the present invention does not limit this.
  • the terminal device determines a candidate granularity for edge link resource selection, transforms the candidate granularity according to the current resource occupancy to obtain the transform granularity, and determines the granularity for the edge link according to the transform granularity.
  • a collection of resources for sending road data can be obtained in a timely and accurate manner, thereby reducing transmission delay to a certain extent and effectively improving resource utilization.
  • the embodiment of the present invention provides an apparatus for determining a side link resource set.
  • the device may be, for example, a terminal device, or it may be one or some parts or components of the terminal device.
  • the same content in this embodiment 4 and embodiment 2 will not be repeated.
  • Fig. 12 is a schematic diagram of an apparatus for determining a side link resource set according to an embodiment of the present invention. As shown in Fig. 12, the apparatus 1200 for determining a side link resource set includes:
  • a candidate granularity determining unit 1201 which determines at least two candidate granularities for edge link resource selection.
  • the resource set determining unit 1202 determines a resource set used for side link data transmission according to the at least two candidate granularities.
  • the time domain lengths of the at least two candidate particle sizes are different but the total number of resource particles is the same.
  • the device may further include:
  • a data segmentation unit 1203 which segments the data to be sent according to the resource size corresponding to the candidate granularity.
  • the physical layer of the terminal device obtains the at least two candidate granularities for side link resource selection from the medium access control layer, and performs resource selection together according to the at least two candidate granularities to determine one The resource set used for side link data transmission; and the physical layer of the terminal device reports a resource set used for side link data transmission to the medium access control layer.
  • the remaining candidate resources in the fifth resource set are in the descending order of the average signal strength of the subchannels Move into the sixth resource set; and when the number of candidate resources in the sixth resource set is greater than or equal to the sixth threshold, determine the sixth resource set to be used for side link data transmission Collection of resources;
  • the threshold of the reference signal received power of the side link data channel is increased.
  • the physical layer of the terminal device obtains the at least two candidate granularities for side link resource selection from the medium access control layer, and performs resource selection according to the at least two candidate granularities to determine one Or multiple resource sets used for side link data transmission; and the physical layer of the terminal device reports one or more resource sets used for side link data transmission to the medium access control layer.
  • the at least two candidate granularities include a first candidate granularity and a second candidate granularity
  • the resource set determining unit 1202 may be configured to:
  • the The eighth resource set and/or the tenth resource set are determined as the resource set used for side link data transmission;
  • the side link is increased The threshold value of the received power of the reference signal of the data channel.
  • the physical layer of the terminal device obtains N candidate granularities for edge link resource selection from the medium access control layer, and performs resource selection according to the N candidate granularities to determine the N user granularities.
  • a collection of resources for sending side link data; and the physical layer of the terminal device reports N resource collections for sending side link data to the medium access control layer, where N is an integer greater than or equal to 2 .
  • the at least two candidate granularities are determined by at least one of service priority, delay requirement, and channel congestion; the time domain lengths of the at least two candidate granularities are predefined or pre-configured, or Configured by higher layers.
  • the device 1200 for determining the side link resource set may also include other components or modules.
  • the specific content of these components or modules reference may be made to related technologies.
  • FIG. 12 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the foregoing components or modules can be implemented by hardware facilities such as a processor, a memory, a transmitter, and a receiver; the implementation of the present invention does not limit this.
  • the terminal device determines at least two candidate granularities used for edge link resource selection; and determines a resource set used for side link data transmission according to the at least two candidate granularities.
  • the side link resources can be obtained in a timely and accurate manner, thereby reducing transmission delay to a certain extent and effectively improving resource utilization.
  • the embodiment of the present invention also provides a communication system, which can refer to FIG. 1, and the same content as the embodiment 1 to 4 will not be repeated.
  • the communication system 100 may at least include:
  • the terminal device 102 determines a candidate granularity for edge link resource selection, transforms the candidate granularity according to the current resource occupancy to obtain the transform granularity, and determines the granularity for side link data transmission according to the transform granularity Collection of resources; or,
  • It determines at least two candidate granularities used for edge link resource selection, and determines a resource set used for edge link data transmission according to the at least two candidate granularities.
  • the communication system 100 may also include a terminal device 103 which performs side link communication with the terminal device 102.
  • the communication system 100 may further include a network device 101, which provides network services for the terminal devices 102 and/or 103.
  • the embodiment of the present invention also provides a network device, which may be a base station, for example, but the present invention is not limited to this, and may also be other network devices.
  • FIG. 13 is a schematic diagram of the structure of a network device according to an embodiment of the present invention.
  • the network device 1300 may include: a processor 1310 (for example, a central processing unit CPU) and a memory 1320; the memory 1320 is coupled to the processor 1310.
  • the memory 1320 can store various data; in addition, it also stores an information processing program 1330, and the program 1330 is executed under the control of the processor 1310.
  • the network device 1300 may further include: a transceiver 1340, an antenna 1350, etc.; wherein the functions of the above-mentioned components are similar to those in the prior art, and will not be repeated here. It is worth noting that the network device 1300 does not necessarily include all the components shown in FIG. 13; in addition, the network device 1300 may also include components not shown in FIG. 13, and the prior art can be referred to.
  • the embodiment of the present invention also provides a terminal device, but the present invention is not limited to this, and may also be other devices.
  • Fig. 14 is a schematic diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device 1400 may include a processor 1410 and a memory 1420; the memory 1420 stores data and programs, and is coupled to the processor 1410. It is worth noting that this figure is exemplary; other types of structures can also be used to supplement or replace this structure to achieve telecommunication functions or other functions.
  • the processor 1410 may be configured to execute a program to implement the method for determining a set of side link resources as described in Embodiment 1.
  • the processor 1410 may be configured to perform the following control: determine a candidate granularity for edge link resource selection, transform the candidate granularity according to the current resource occupancy to obtain the transform granularity, and according to the transform granularity Determine the resource set used for side link data transmission.
  • the processor 1410 may be configured to execute a program to implement the method for determining a set of side link resources as described in Embodiment 2.
  • the processor 1410 may be configured to perform the following control: determine at least two candidate granularities for side link resource selection, and determine a resource set for side link data transmission according to the at least two candidate granularities.
  • the terminal device 1400 may further include: a communication module 1430, an input unit 1440, a display 1450, and a power supply 1460. Among them, the functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is worth noting that the terminal device 1400 does not necessarily include all the components shown in FIG. 14, and the above-mentioned components are not necessary; in addition, the terminal device 1400 may also include components not shown in FIG. There is technology.
  • An embodiment of the present invention also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the method for determining the side link resource set described in Embodiment 1 or 2.
  • An embodiment of the present invention also provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the method for determining the side link resource set described in Embodiment 1 or 2.
  • the above devices and methods of the present invention can be implemented by hardware, or by hardware combined with software.
  • the present invention relates to such a computer-readable program, when the program is executed by a logic component, the logic component can realize the above-mentioned device or constituent component, or the logic component can realize the above-mentioned various methods Or steps.
  • the present invention also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memory, and the like.
  • the method/device described in conjunction with the embodiments of the present invention may be directly embodied as hardware, a software module executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams and/or one or more combinations of the functional block diagrams shown in the figure may correspond to each software module of the computer program flow or each hardware module.
  • These software modules can respectively correspond to the steps shown in the figure.
  • These hardware modules can be implemented, for example, by using a field programmable gate array (FPGA) to solidify these software modules.
  • FPGA field programmable gate array
  • the software module can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art.
  • a storage medium may be coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be a component of the processor.
  • the processor and the storage medium may be located in the ASIC.
  • the software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described in the drawings can be implemented as general-purpose processors, digital signal processors (DSPs) for performing the functions described in the present invention. ), Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component or any appropriate combination thereof.
  • DSPs digital signal processors
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • One or more of the functional blocks described in the drawings and/or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, or multiple micro-processing Processor, one or more microprocessors in communication with the DSP, or any other such configuration.
  • a method for determining the set of side link resources includes:
  • the terminal device determines a candidate granularity for edge link resource selection
  • the resource set used for side link data transmission is determined according to the transformation granularity.
  • Supplement 2 The method according to Supplement 1, wherein the time domain lengths of the candidate granularity and the transformation granularity are different but the total number of resource particles (RE) is the same.
  • Supplement 3 The method according to Supplement 1, wherein the time domain lengths of the candidate granularity and the transformation granularity are different and the total number of resource particles are different.
  • Supplement 4 The method according to Supplement 3, wherein the method further includes:
  • the data to be sent is segmented according to the resource size corresponding to the transformation granularity.
  • Supplement 5 The method according to any one of Supplements 1 to 4, wherein the method further comprises:
  • the received side link control information (SCI) and the reference signal received power (RSRP) corresponding to the side link data channel indicated by the side link control information one or more are excluded from the first resource set Candidate resources;
  • Supplement 6 The method according to Supplement 5, wherein, in a case where the number of candidate resources remaining in the first resource set is greater than or equal to the first threshold, the method further includes:
  • the second resource set is determined as the resource set used for side link data transmission.
  • Appendix 7 The method according to appendix 6, wherein the first threshold and the second threshold are numbers of a predetermined proportion of the total number of initial candidate resources in the first resource set.
  • Supplement 8 The method according to any one of Supplements 1 to 7, wherein determining a resource set for side link data transmission according to the transformation granularity includes:
  • one or more resources are excluded from the third resource set Candidate resources;
  • the remaining candidate resources in the third resource set are in the descending order of the average signal strength of the subchannels Move to the fourth resource collection;
  • the fourth resource set is determined as the resource set used for side link data transmission.
  • Appendix 9 The method according to Appendix 8, wherein the method further includes:
  • the reference signal received power (RSRP) threshold of the side link data channel is increased.
  • Supplement 10 The method according to any one of Supplements 5 to 7, wherein determining a resource set for side link data transmission according to the transformation granularity includes:
  • one or more resources are excluded from the third resource set Candidate resources;
  • the remaining candidate resources in the collection are moved into the fourth resource set in the order of the average signal strength of the subchannels from small to large ;as well as
  • the fourth resource set is determined as the resource set used for side link data transmission.
  • Appendix 11 The method according to Appendix 10, wherein the method further includes:
  • the reference signal received power (RSRP) threshold of the side link data channel is increased.
  • Supplement 12 The method according to any one of Supplements 8 to 11, wherein the third threshold value is a predetermined proportion of the total number of initial candidate resources in the third resource set;
  • the fourth threshold is a predetermined proportion of the total number of initial candidate resources in the third resource set; or the fourth threshold is the total number of initial candidate resources in the first resource set and the initial candidate resources in the third resource set The number of predetermined proportions of the total sum of resources.
  • Supplement 13 The method according to any one of Supplements 1 to 12, wherein the candidate granularity and the transformation granularity are determined by at least one of service priority, delay requirement, and channel congestion;
  • the time domain length of the transformation granularity is predefined or preconfigured or configured by a higher layer.
  • Supplement 14 The method according to any one of Supplements 1 to 13, wherein the physical layer of the terminal device obtains the one candidate granularity for side link resource selection from a medium access control (MAC) layer; as well as
  • MAC medium access control
  • the physical layer of the terminal device reports a resource set used for side link data transmission to the MAC layer.
  • a method for determining the set of side link resources includes:
  • the terminal device determines at least two candidate granularities for edge link resource selection.
  • Supplement 16 The method according to Supplement 15, wherein the time domain lengths of the at least two candidate particle sizes are different but the total number of resource particles (RE) is the same.
  • Supplement 17 The method according to Supplement 15, wherein the time domain lengths of the at least two candidate particle sizes are different and the total number of resource particles (RE) are different.
  • Appendix 18 The method according to Appendix 17, wherein the method further includes:
  • the data to be sent is segmented according to the resource size corresponding to the candidate granularity.
  • the physical layer of the terminal device obtains the at least two candidate granularities for side link resource selection from the medium access control (MAC) layer, and performs resource selection together according to the at least two candidate granularities to determine one of the A set of resources for sending side link data; and the physical layer of the terminal device reports a set of resources for sending side link data to the MAC layer.
  • MAC medium access control
  • Appendix 20 The method according to Appendix 19, wherein the at least two candidate granularities include a first candidate granularity and a second candidate granularity, and the method includes:
  • one or more resources are excluded from the fifth resource set Candidate resources;
  • the remaining candidate resources in the fifth resource set are in the descending order of the average signal strength of the subchannels Move into the sixth resource collection;
  • the sixth resource set is determined as the resource set used for side link data transmission.
  • Appendix 21 The method according to Appendix 20, wherein the method further includes:
  • the reference signal received power (RSRP) threshold of the side link data channel is increased.
  • Supplement 22 The method according to Supplement 20, wherein the fifth threshold and the sixth threshold are numbers of a predetermined proportion of the total number of initial candidate resources in the fifth resource set.
  • Supplement 23 The method according to any one of Supplements 15 to 18, wherein:
  • the physical layer of the terminal device obtains the at least two candidate granularities for side link resource selection from the medium access control (MAC) layer, and performs resource selection according to the at least two candidate granularities to determine one or more The resource set used for side link data transmission; and the physical layer of the terminal device reports one or more of the resource set used for side link data transmission to the MAC layer.
  • MAC medium access control
  • Appendix 24 The method according to Appendix 23, wherein the at least two candidate granularities include a first candidate granularity and a second candidate granularity, and the method includes:
  • SCI side link control information
  • RSRP Side link control information Received power
  • the ninth resource set used for resource selection according to the second candidate granularity; according to the received side link control information (SCI) and the reference signal received power of the side link data channel indicated by the side link control information (RSRP), exclude one or more candidate resources from the ninth resource set; in the case that the number of candidate resources remaining in the ninth resource set is greater than or equal to the ninth threshold, the ninth resource set The remaining candidate resources in the resource set are moved into the tenth resource set in the order of the average signal strength of the subchannels from small to large; and
  • the The eighth resource set and/or the tenth resource set are determined as the resource set used for side link data transmission.
  • Supplement 25 The method according to Supplement 24, wherein the method further includes:
  • the side link is increased
  • RSRP reference signal received power
  • Supplement 26 The method according to Supplement 24, wherein the seventh threshold and the eighth threshold are numbers of a predetermined proportion of the total number of initial candidate resources in the seventh resource set; the ninth threshold And the tenth threshold is the number of a predetermined proportion of the total number of initial candidate resources in the ninth resource set.
  • Supplement 27 The method according to any one of Supplements 15 to 18, wherein:
  • the physical layer of the terminal device obtains N candidate granularities for edge link resource selection from the medium access control (MAC) layer, and performs resource selection respectively according to the N candidate granularities to determine N of the edge link resources And the physical layer of the terminal device reports N resource sets for side link data transmission to the MAC layer, where N is an integer greater than or equal to 2.
  • MAC medium access control
  • Supplement 28 The method according to any one of Supplements 15 to 27, wherein the at least two candidate granularities are determined by at least one of service priority, delay requirement, and channel congestion;
  • the time domain lengths of the at least two candidate granularities are predefined or preconfigured or configured by a higher layer.
  • Appendix 29 A terminal device, comprising a memory and a processor, the memory storing a computer program, and the processor is configured to execute the computer program to implement the side described in any one of appendix 1 to 28 Method for determining the set of link resources.

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé et un dispositif pour la détermination d'un ensemble de ressources de liaison latérale. Le procédé comprend les étapes suivantes : un dispositif terminal détermine une granularité candidate utilisée pour une sélection de ressources de liaison latérale, transforme la granularité candidate sur la base de l'occupation de ressources actuelles pour acquérir une granularité de transformation et, sur la base de la granularité de transformation, détermine un ensemble de ressources utilisé pour transmettre des données de liaison latérale ; ou bien, le dispositif terminal détermine au moins deux granularités candidates utilisées pour une sélection de ressources de liaison latérale et, sur la base des deux granularités candidates ou plus, détermine un ensemble de ressources utilisé pour transmettre des données de liaison latérale. Des ressources de liaison latérale peuvent ainsi être acquises de manière opportune et précise, ce qui réduit sensiblement la latence de transmission et augmente efficacement le taux d'utilisation des ressources.
PCT/CN2019/074965 2019-02-13 2019-02-13 Procédé et dispositif pour la détermination d'un ensemble de ressources de liaison latérale Ceased WO2020164012A1 (fr)

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