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WO2020029197A1 - Procédés et dispositifs destinés à une communication v2v - Google Patents

Procédés et dispositifs destinés à une communication v2v Download PDF

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Publication number
WO2020029197A1
WO2020029197A1 PCT/CN2018/099696 CN2018099696W WO2020029197A1 WO 2020029197 A1 WO2020029197 A1 WO 2020029197A1 CN 2018099696 W CN2018099696 W CN 2018099696W WO 2020029197 A1 WO2020029197 A1 WO 2020029197A1
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WIPO (PCT)
Prior art keywords
sub
frame
resource
packet
determining
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.)
Ceased
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PCT/CN2018/099696
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English (en)
Inventor
Yong Liu
Dong Li
Chuan MA
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.)
Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
Nokia Technologies Oy
Original Assignee
Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
Nokia Technologies Oy
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.)
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Publication date
Application filed by Nokia Shanghai Bell Co Ltd, Nokia Solutions and Networks Oy, Nokia Technologies Oy filed Critical Nokia Shanghai Bell Co Ltd
Priority to PCT/CN2018/099696 priority Critical patent/WO2020029197A1/fr
Priority to CN201880096468.1A priority patent/CN112544119B/zh
Publication of WO2020029197A1 publication Critical patent/WO2020029197A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication, and in particular, to methods and devices for V2V communication.
  • V2X communication includes any combination of direct communication between vehicles, pedestrians, infrastructures, and networks, and thus can be divided into the following four different types: Vehicle-to-Vehicle (V2V) , Vehicle-to-Pedestrian (V2P) , Vehicle-to-Infrastructure (V2I) , Vehicle-to-Network (V2N) .
  • V2V Vehicle-to-Vehicle
  • V2P Vehicle-to-Pedestrian
  • V2I Vehicle-to-Infrastructure
  • V2N Vehicle-to-Network
  • V2V communication includes communication between vehicles;
  • V2P communication includes communication between a vehicle and a device carried by an individual (for example, a handheld user terminal carried by a pedestrian, cyclist, driver, or passenger) ;
  • V2I communication includes communication between a vehicle and infrastructures supporting V2X applications, such as roadside units (RSUs) which are transportation infrastructure entities;
  • V2N communication includes communication between a vehicle and network infrastructures such as a network terminal.
  • the aperiodic traffic requires, for example in a medium traffic intensity, an inter-packet arrival time with 50 ms plus an exponential random variable with the mean of 50 ms and a packet size with uniformly random in the range between 200 bytes and 2000 bytes with the quantization step of 200 bytes.
  • a sensing based resource selection will not be support for aperiodic traffic.
  • example embodiments of the present disclosure provide methods and devices for V2V communication.
  • a method implemented at a terminal device comprises determining first sub-frame for transmitting first Schedule Assignment (SA) information, the first SA information associated with a first source for transmitting a first packet; determining the first resource based on second SA information received from a further terminal device and a reference signal receiving power (RSRP) associated with the further terminal device; transmitting the first SA information at the first sub-frame; and transmitting the first packet on the first resource after the transmission of the first SA.
  • SA Schedule Assignment
  • RSRP reference signal receiving power
  • a terminal device comprising at least one processor; and at least one memory including computer program codes.
  • the at least one memory and the computer program codes are configured to, with the at least one processor, cause the device at least to perform the method according to the first aspect.
  • an apparatus comprising means to perform the steps of the method according to the first aspect.
  • a computer readable medium having a computer program stored thereon which, when executed by at least one processor of a device, causes the device to carry out the method according to the first aspect.
  • FIG. 1 shows an example communication environment 100 in which embodiments of the present disclosure can be implemented
  • FIG. 2 shows a flowchart of an example method 200 for V2V communication according to some embodiments of the present disclosure
  • FIG. 3 shows an example of some embodiments of the present disclosure
  • FIG. 4 shows an example of some embodiments of the present disclosure
  • FIG. 5 shows an example of some embodiments of the present disclosure
  • FIG. 6 shows an example of some embodiments of the present disclosure
  • FIG. 7 shows an example of some embodiments of the present disclosure
  • FIG. 8 shows a flowchart of an example method for V2V communication according to some embodiments of the present disclosure.
  • FIG. 9 is a simplified block diagram of a device that is suitable for implementing embodiments of the present disclosure.
  • the term “network device” or “base station” refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • a network device include, but not limited to, a Node B (NodeB or NB) , an Evolved NodeB (eNodeB or eNB) , a NodeB in new radio access (gNB) , a next generation NodeB (gNB) , a Remote Radio Unit (RRU) , a radio head (RH) , a remote radio head (RRH) , a low power node such as a femto node, a pico node, and the like.
  • NodeB Node B
  • eNodeB or eNB Evolved NodeB
  • gNB NodeB in new radio access
  • gNB next generation NodeB
  • RRU Remote Radio Unit
  • RH radio head
  • RRH remote radio head
  • a low power node such as a
  • terminal device refers to any device having wireless or wired communication capabilities.
  • Examples of the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, image capture devices such as digital cameras, gaming devices, music storage and playback appliances, or Internet appliances enabling wireless or wired Internet access and browsing and the like.
  • UE user equipment
  • PDAs personal digital assistants
  • portable computers image capture devices such as digital cameras, gaming devices, music storage and playback appliances, or Internet appliances enabling wireless or wired Internet access and browsing and the like.
  • values, procedures, or apparatus are referred to as “best, ” “lowest, ” “highest, ” “minimum, ” “maximum, ” or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
  • Fig. 1 shows an example communication environment 100 in which embodiments of the present disclosure can be implemented.
  • vehicles 110-1 and 110-2 are terminal devices (collectively or individually referred to as terminal device 110) and can communicate with each other in their coverage 101.
  • a cellular network device 120 is also deployed in the environment and provides services to those terminal devices that are in their coverage 102 and 103 and access to the cellular network. It would be appreciated that the terminal devices, and the links there between are shown merely for illustration. There may be various other terminal devices and network devices in V2X communication in many other ways.
  • the network device 120 may divide different zones according to the relative location with the terminal devices 110 (or according to the absolute location of the terminal device 110) , such as the coverage 102 (also referred to as zone 102) and 103 (also referred to as zone 103) shown in FIG. 1. Some terminal devices may locate in zone 102 (for example, terminal device 110-1) and some terminal device may locate in zone 103 (for example, terminal device 110-2) . The terminal devices located in different zones may also communicate with each other.
  • the environment 100 illustrates a scenario of V2X communication where vehicles and any other devices (anetwork device 120) can communicate with each other.
  • V2X communication can be divided into four types, including Vehicle-to-Vehicle (V2V) , Vehicle-to-Pedestrian (V2P) , Vehicle-to-Infrastructure (V2I) , Vehicle-to-Network (V2N) .
  • Communication between terminal devices 110 that is, V2V, V2P, V2I communications
  • V2I Vehicle-to-Infrastructure
  • V2N Vehicle-to-Network
  • Communication between terminal devices 110 that is, V2V, V2P, V2I communications
  • V2N communication can be performed via both Uu interface and direct links (or sidelinks)
  • communication involving the network device 120 that is, V2N communication
  • information is transmitted from a TX terminal device to one or more RX terminal devices in a broadcast manner.
  • the network 100 may be a Code Division Multiple Access (CDMA) network, a Time Division Multiple Address (TDMA) network, a Frequency Division Multiple Access (FDMA) network, an Orthogonal Frequency-Division Multiple Access (OFDMA) network, a Single Carrier-Frequency Division Multiple Access (SC-FDMA) network or any others.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Address
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA Single Carrier-Frequency Division Multiple Access
  • Communications discussed in the network 100 may use conform to any suitable standards including, but not limited to, New Radio Access (NR) , Long Term Evolution (LTE) , LTE-Evolution, LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , cdma2000, and Global System for Mobile Communications (GSM) and the like.
  • NR New Radio Access
  • LTE Long Term Evolution
  • LTE-A LTE-Evolution
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GSM Global System for Mobile Communications
  • the communications may be performed according to any generation communication protocols either currently known or to be developed in the future. Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols.
  • the techniques described herein may be used
  • V2V traffic may include such a periodic traffic or an aperiodic traffic.
  • V2V traffic may support transmitting packets having fixed or varying packet sizes.
  • the aperiodic traffic requires, for example in a medium traffic intensity, an inter-packet arrival time with 50 ms plus an exponential random variable with the mean of 50 ms and a packet size with uniformly random in the range between 200 bytes and 2000 bytes with the quantization step of 200 bytes.
  • a traditional sensing-based resource selection cannot be applied to aperiodic traffic.
  • the Scheduling Assignment (SA) information which indicates the resources for data transmission on both time and frequency domain in a resource pool, may be sent before its associated data.
  • SA information and data may have multiple transmissions (same or different RVs (redundancy versions)) .
  • the first transmission of the SA information may be sent before all transmissions of the data. More details of the embodiments of the present disclosure will be discussed with reference to Figs. 2 to 8.
  • Fig. 2 shows a flowchart of an example method 200 for V2V communication in accordance with some embodiments of the present disclosure.
  • the method 200 can be implemented at the terminal devices 110-1 and 110-2 as shown in Fig. 1. It is to be understood that the method 200 may include additional blocks not shown and/or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard. For the purpose of discussion, the method 200 will be described from the perspective of the terminal devices 110-1 and 110-2 with reference to Fig. 1.
  • the terminal device 110-1 acts as a TX terminal device.
  • a packet (also refers to as a first packet) arrives in the PHY layer and will be transmitted.
  • the terminal device 110-1 determines a first sub-frame for transmitting first SA information.
  • the first SA information may be associated with a first source for transmitting the first packet.
  • the first sub-frame may be determined based on the arrival sub-frame of the first packet.
  • the terminal device 110-1 may obtain the arrival sub-frame of the first packet.
  • the terminal device 110-1 may determine a sub-frame for transmitting the first SA information based on the arrival sub-frame of the first packet and the processing capability of the terminal device 110-1.
  • the processing capability of the terminal device 110-1 may depend on some parameters represent the processing capability.
  • the parameter may refer to the operating speed of the processor, for example, a time required for the processor to select resources and configure SA information.
  • the terminal device 110-1 determines the first resource.
  • the first resource may refer to some physical resource blocks for transmitting the first packet and may be indicated in the first SA information.
  • the terminal device 110-1 may configure the SA information based on the resources selected from a resource pool.
  • other terminal devices for example, terminal device 110-2 may be informed which parts of resources has been occupied for transmitting the first packet.
  • Other terminal device may use other available resources which are not occupied by the terminal device 110-1.
  • the SA information may be sent before the data transmission to avoid the collision and interference from other terminal devices.
  • the terminal device 110-1 may determine a collection of time-domain resource.
  • the collection of time domain may be regarded as a time interval or a set of sub-frames in the time domain. Since the transmission of the first packet may be performed after the transmission of the first SA information, the start time or the start sub-frame of the collection of time domain should be later than the determined first sub-frame for transmitting the first SA information. Thus, the collection of time domain may be determined based on the first sub-frame. Furthermore, the determination of the collection of time domain may also depend on a parameter associated with the latency requirement of the packet.
  • FIG. 3 illustrates an example of some embodiments of the present disclosure. With reference to FIG. 3, it can be seen the determination of the first sub-frame for transmitting the first SA information and the collection of the time domain associated with the first resource for transmitting the first packet.
  • FIG. 3 shows a plurality of sub-frames 310 0 -310 7 in time domain.
  • the sub-frames 310 0 -310 7 in FIG. 3 may not be contiguous in the time domain, for example, several sub-frames 310 7 may be spaced in the sub-frame 310 0 and the sub-frame 310 1 .
  • the sub-frame for transmitting the SA information may be determined based on the arrival sub-frame 310 0 of the packet and the processing capability of the terminal device 110-1. If the ordinal number of the arrival sub-frame 310 0 may be referred as n, the sub-frame 310 1 for transmitting the SA information can be represented as n+T1, wherein T1 depends on the processing capability of the terminal device 110-1.
  • the sub-frames 310 2 -310 6 represent the collection of time-domain resource associated with the data transmission, which may include a set of sub-frames.
  • the start sub-frame of the collection of time-domain resource may locate after the sub-frame 310 1 in the time domain. Based on the the sub-frame 310 1 , the start sub-frame of the collection of time-domain resource may be determined as n+T1+1.
  • the terminal sub-frame of collection of time-domain resource may be determined based on the arrival sub-frame 310 0 of the packet and the latency requirement of the packet. In this case, the collection of time-domain resource may be represented as [n+T1+1, n+T2], T2 represent a parameter associated with the latency requirement of the packet.
  • the terminal device 110-1 it is advantageous that transmitting the first SA information as early as possible. In this way, a larger collection of time-domain resource may provide more resources for data transmission and more other terminal devices may be informed the resources occupied by the terminal device 110-1 to avoid the collision during the data transmission.
  • the first sub-frame for transmitting the first SA may be randomized by introduce a random value ⁇ T.
  • the terminal device 110-1 may determine a first sub-frame interval between the arrival sub-frames of the first packet and a second packet prior to the first packet and a second sub-frame interval between arrival sub-frames of the second packet and a third packet prior to the second packet to compare the two inter-packet arrival times. If the first sub-frame interval is determined to be equal to the second sub-frame interval, the offset value ⁇ T is introduced to update the first sub-frame and the collection of time-domain resource. That is, the sub-frame 310 1 for transmitting the SA information can be represented as n+T1+ ⁇ T and the collection of time-domain resource may be represent as [n+T1+ ⁇ T+1, n+T2]accordingly.
  • the random value ⁇ T may be uniformly distributed in an interval represented as [0, b].
  • introducing a random value ⁇ T may provide priority support to terminal devices with different latency requirements.
  • the value b can be set proportional to latency requirement. The more stringent latency requirement, the smaller value b is.
  • the terminal device 110-1 selects the first resource for data transmission from the collection of time-domain resource.
  • the selection of the first resource may be determined based on SA information from other terminal device and a corresponding energy level of the reference signal, i.e. Reference Signal Receiving Power.
  • the terminal device 110-1 may continuously decode SA information from other terminal devices and perform RSRP measurements.
  • the LTE-V2X transmission channels include Physical Sidelink Control Channels (PSCCH) and Physical Sidelink Share Channel (PSSCH) .
  • PSCCH Physical Sidelink Control Channels
  • PSSCH Physical Sidelink Share Channel
  • the PSCCH transmits SA information while the PSSCH transmits user data.
  • the terminal device 110-1 may decode SA information from other terminal devices and perform the RSRP measurement on the associated PSCCHs.
  • the terminal device 110-1 may also perform RSRP measurements on previous PSSCH channels.
  • PSSCH channel is usually wider than PSCCH channel, it provides more accurate information on potential interference.
  • FIG. 4 illustrates an example of some embodiments of the present disclosure.
  • FIG. 4 shows transmissions of SA information and PSSCHs for two consecutive packets from another terminal device, for example, the terminal device 110-2. If the terminal device 110-1 finishes collecting SA/RSRP information at sub-frame m 430, RSRP of SA information 410 1 and RSRPs of previous PSCCHs 420 0 and 420 1 (from the terminal device 110-2) may be used by the terminal device 110-1. That is, the terminal device may only need to record the latest measurements.
  • the terminal device 110-1 may estimate interference levels of the resource blocks of the collection of time-domain resource.
  • the emulation of interference level may be referred to estimate both co-channel collision interference and IBI (in-band emission interference) of the resource blocks of the collection of time-domain resource.
  • a set of resource blocks, which have interference level lower than a threshold level may be determined as candidate resource blocks. Based on the number of resource blocks required for data transmission, the first resource may be selected from the candidate resource blocks. The number of resource blocks required for data transmission may depend on the size of the first packet.
  • the terminal device 110-1 may select a predetermined group of resource blocks from the candidate resource blocks.
  • the predetermined group of resource blocks may be selected based on a threshold number.
  • the terminal device 110-1 selects a threshold number of resource blocks from the determined set of resource blocks sequentially.
  • a resource selection window for the predetermined group of resource blocks may be represented as [n+T1+1, n+T1+q] , T1+q ⁇ T2. That is, the terminal device 110-1 selects the first resource from the candidate resource blocks in the first sub-frames of the collection of time-domain resource.
  • the threshold number N thr may be determined based on at least one of the following parameters including Channel Busy Ratio (CBR) of the data pool, the number of resource blocks required for data transmission and the number of sub-frames of SAs missed in resource selection.
  • CBR Channel Busy Ratio
  • the number threshold N thr is to make sure an enough number of available candidate resources for data transmission, which may be selected by the terminal device 110-1, so that a randomization effect for data transmission may be guaranteed. For example, if the number of resource blocks required for data transmission is M, N thr can be set as 4M.
  • the terminal device 110-1 may determine the number Ncd of candidate resource blocks in the predetermined group of resource blocks sequentially, starting from q as 1 up to q as T2 until Ncd ⁇ Nthr. Then the terminal device 110-1 may randomly select the first resource for data transmissions from the threshold number of resource blocks, i.e, candidate resource blocks in [n+T1+1, n+T1+q] .
  • a sub-channel may be defined as a basic unit resource for performing interference level estimation.
  • One sub-channel may include a plurality of resource blocks. For example, for model 1 of aperiodic traffic, a sub-channel can be configured as 15 RBs for 200-byte packet. Then 400-byte packet occupies 2 sub-channels, 600-byte packet occupies 3 sub-channels, etc.
  • k sub-channels may be occupied by the terminal device 110-1 for data transmission.
  • the terminal device 110-1 may estimate interference levels of all sub-channels in the collection of time-domain resource.
  • the maximum value or the average value of a set of interference levels [I1, I2, ..., Ik] may represent the interference level of the channels for data transmission.
  • FIG. 5 illustrates an example of some embodiments of the present disclosure.
  • a resource pool of collection of time-domain resource comprises a plurality of sub-channels 520, one of a plurality of sets of the sub-channels 510 0 -510 3 may be occupied by the terminal device 110-1 for data transmission. In this case, each set may occupy 3 sub-channels.
  • the terminal device 110-1 may use a plurality of smaller data channels. For example, for two data channels, the terminal device 110-1 may use one data channel of r sub-channels and the other data channel of t sub-channels and k sub-channels consist of r sub-channels and t sub-channels. The terminal device 110-1 may select suitable resources for those smaller data channels.
  • the first resource for data transmission may be selected from the collection of time-domain resource in different way.
  • the terminal device 110-1 transmits the first SA information at the first sub-frame.
  • the terminal device 110-1 transmits the first packet on the first resource after the transmission of the first SA.
  • the terminal device 110-1 transmits the SA information before the data transmission.
  • the SA information may be informed to other terminal devices as early as possible, so that the parts of resources occupied for transmitting the first packet by the terminal device 110-1 may not be used by other terminal device.
  • a potential collision and interference may be avoided and a resource selection scheme for aperiodic traffic required in NR V2V communications may be achieved.
  • Some sub-frames associated with SA information may be missed in resource selection procedure due to processing delay.
  • the case that SAs in certain sub-frames are missing may refer to FIG. 3.
  • the terminal device 110-1 collects the SA information from other terminal device until sub-frame 310 7 . Then the terminal device 110-1 may perform a switching process from RX to TX. The SA information in the sub-frames during the switching process may be missed by the terminal device 110-1. For example, in FIG. 3, the SA information in the sub-frames from the sub-frame 310 7 to the sub-frame 310 1 may be missed by the terminal device 110-1.
  • SA information is transmitted twice in sub-frames different from the sub-frames for data transmissions. This half duplex constraint degrades system level performance. Due to the first SA information is sent before the first packet, more sub-frames are used for transmission instead of receiving, which increases impact of half duplex constraint.
  • SCS Sub-Carrier Spacing
  • the zone-based pool configuration was specified for reducing near-far effect, which may also reduce the number of the missing SA information.
  • a zone-based pool configuration in accordance with the embodiments of the present disclosure is provided.
  • FIG. 6 shows an example of some embodiments of the present disclosure.
  • some terminal devices are located in the first zone 601 (such as terminal device 110-1) and some terminal devices are located in the second zone 602 (such as terminal device 110-2) .
  • the SA information and associated data are transmitted in a same sub-frame.
  • the odd sub-frames 610 0 -610 4 are used by the terminal devices located in the first zone 601 and the even sub-frames 620 0 -620 4 are used by the terminal devices located in the second zone 602. In this way, at least one sub-frame time for a switching progress from RX to TX is not needed. Thus, relevant SA information may not be missed in resource selection..
  • the terminal devices located in the first zone may use the odd sub-frames for data transmissions and use the even sub-frames for transmitting the SA information, while the terminal devices located in the second zone may use the even sub-frames for data transmissions and use the odd sub-frames for transmitting the SA information.
  • FIG. 7 shows an example of some embodiments of the present disclosure.
  • the odd sub-frames 710 5 -710 9 are used for data transmissions and the even sub-frames 710 0 -710 4 are used for transmitting the SA information.
  • the even sub-frames 720 5 -720 9 are used for data transmissions and the odd sub-frames 720 0 -720 4 are used for transmitting the SA information.
  • This interleaved SA/data pool configuration mechanism can be similarly applied with zone based pool configuration with any number of zones.
  • a SA-based resource selection scheme for aperiodic traffic is provide to meet the requirement of NR V2V communications.
  • the interleaved SA/data pool configuration mechanism may further reduce impact of half duplex constraint.
  • Fig. 8 shows a process 800 according to an embodiment of the present disclosure.
  • the process 800 will be described with reference to Fig. 1.
  • the process 800 may involve a configuration of resource for transmission in V2V communication.
  • the terminal device 110-1 determines 805 a first sub-frame for transmitting first SA information.
  • the SA information is associated with a first source for transmitting a first packet.
  • the first sub-frame may be determined based on the first arrival sub-frame of the first packet and a first parameter representing processing capability of the terminal device.
  • the terminal device 110-2 may transmit 810 second SA information and the RSRP.
  • the terminal device 110-1 may collect the second SA information and the RSRP and determine 815 the first resource based on second SA information and the RSRP associated with the terminal device 110-2.
  • the terminal device 110-1 may determine a collection of time-domain resource base on the first time and a second parameter representing a latency requirement of the first packet.
  • the terminal device 110-1 may select the first resource from the collection of time-domain resource based on the second SA information and the PSRP from a further terminal device 110-2.
  • the RSRP may be determined by monitoring at least one of the PSCCH and the PSSCH.
  • the terminal device 110-1 monitors that the arrival time the inter-packet are same.
  • the terminal device may determine a random value to update the first sub-frame and the collection of time-domain resource.
  • an interference level estimation for each resource blocks may be performed.
  • the interference level estimation may refer to an estimation of the co-channel collision interference and an estimation of the in-band emission interference.
  • a set of resource blocks, which have interference levels lower than the threshold level may be determined as the candidate resource blocks.
  • the terminal device may select the first resource of the candidate resource blocks based on the number of resource blocks required to transmit the packet.
  • the terminal device 110-1 and the terminal device 110-2 are located in different zones of a network device, for determining the first sub-frame, the terminal device 110-1 determine a second sub-frame for transmitting the second SA information. If the second sub-frame is in an odd sub-frame, the terminal device 110-1 determines the first sub-frame in an even sub-frame and determines the first resource in odd sub-frames.
  • the terminal device transmit 820 the first SA information at the first sub-frame and transmit 825 the first packet on the first resource after the transmission of the first SA.
  • Fig. 9 is a simplified block diagram of a device 900 that is suitable for implementing embodiments of the present disclosure.
  • the device 900 can be considered as a further example implementation of a terminal device 120 as shown in Fig. 1. Accordingly, the device 900 can be implemented at or as at least a part of the terminal device 110.
  • the device 900 includes a processor 910, a memory 920 coupled to the processor 910, a suitable transmitter (TX) and receiver (RX) 940 coupled to the processor 910, and a communication interface coupled to the TX/RX 940.
  • the memory 910 stores at least a part of a program 930.
  • the TX/RX 940 is for bidirectional communications.
  • the TX/RX 940 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2 interface for bidirectional communications between eNBs, S1 interface for communication between a Mobility Management Entity (MME) /Serving Gateway (S-GW) and the eNB, Un interface for communication between the eNB and a relay node (RN) , or Uu interface for communication between the eNB and a terminal device.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • Un interface for communication between the eNB and a relay node (RN)
  • Uu interface for communication between the eNB and a terminal device.
  • the program 930 is assumed to include program instructions that, when executed by the associated processor 910, enable the device 900 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to Figs. 2 to 8.
  • the embodiments herein may be implemented by computer software executable by the processor 910 of the device 900, or by hardware, or by a combination of software and hardware.
  • the processor 910 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 910 and memory 910 may form processing means 950 adapted to implement various embodiments of the present disclosure.
  • the memory 910 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 910 is shown in the device 900, there may be several physically distinct memory modules in the device 900.
  • the processor 910 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 900 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to any of Figs. 2 o 11
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • the machine readable medium may be a machine readable signal medium or a machine readable storage medium.
  • a machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • machine readable storage medium More specific examples of the machine readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • CD-ROM portable compact disc read-only memory
  • magnetic storage device or any suitable combination of the foregoing.

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

Abstract

Des modes de réalisation de la présente invention concernent des procédés, des dispositifs, et des supports lisibles par ordinateur destinés à des communications V2V. Le procédé consiste à déterminer une première sous-trame permettant de transmettre des premières informations d'attribution de calendrier (SA), les premières informations de SA étant associées à une première source permettant de transmettre un premier paquet ; à déterminer la première ressource sur la base de secondes informations de SA reçues d'un autre dispositif terminal et d'une puissance de réception de signal de référence (RSRP) associée à l'autre dispositif terminal ; à transmettre les premières informations de SA au niveau de la première sous-trame ; et à transmettre le premier paquet sur la première ressource après la transmission de la première SA.
PCT/CN2018/099696 2018-08-09 2018-08-09 Procédés et dispositifs destinés à une communication v2v Ceased WO2020029197A1 (fr)

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CN201880096468.1A CN112544119B (zh) 2018-08-09 2018-08-09 用于v2v通信的方法和设备

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