WO2019228413A1 - Procédé et appareil de transmission de données de groupe de ressources de communication d2d - Google Patents

Procédé et appareil de transmission de données de groupe de ressources de communication d2d Download PDF

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Publication number
WO2019228413A1
WO2019228413A1 PCT/CN2019/089071 CN2019089071W WO2019228413A1 WO 2019228413 A1 WO2019228413 A1 WO 2019228413A1 CN 2019089071 W CN2019089071 W CN 2019089071W WO 2019228413 A1 WO2019228413 A1 WO 2019228413A1
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WO
WIPO (PCT)
Prior art keywords
application data
transmission
data packet
target terminal
resource pool
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Application number
PCT/CN2019/089071
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English (en)
Chinese (zh)
Inventor
时九
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中兴通讯股份有限公司
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Publication of WO2019228413A1 publication Critical patent/WO2019228413A1/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
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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
    • 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
    • H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the present invention relates to the technical field of D2D (Device-to-Device) wireless communication of sidelink, and particularly to a method and device for data transmission of a D2D communication resource pool.
  • D2D Device-to-Device
  • NB-IOT Near Internet and Internet of Things
  • MTC Mobility Management Entity
  • 3GPP R12 to R14 3rd Generation Partnership Project
  • 5G 5th Generation Partnership Project
  • the Qos (Quality of Server) of the service the data with small real delay and high Qos priority is guaranteed to be transmitted first.
  • the upper layer of the terminal needs to divide the application data packets with PPPP (ProSe Per-Packet Priority) packets.
  • PPPP ProSe Per-Packet Priority
  • the priority of upper layer data packets is implemented by the terminal. After the PPPP priority of the data packets is divided, the high-priority data packets are transmitted first.
  • MAC Media Access Control
  • LCID Logical Channel Identify, logical channel identification
  • PPPP there are two main sorting methods for PPPP.
  • One is data-based QoS sorting. For those with high requirements for QoS services, delays, and rates, PPPP ranks higher.
  • QCI QoS Class Identifier, QoS level indication
  • FIG. 3 there is a terminal that sorts data in the data resource pool according to time.
  • the technical problem solved by the solution provided by the embodiment of the present invention is that the data sequencing in the sidelink in the prior art cannot be effectively transmitted.
  • a method for transmitting data in a D2D communication resource pool includes:
  • a target terminal for receiving each application data packet is obtained;
  • the D2D refers to device-to-device; the QCI refers to the Qos level indication; and the PPPP refers to the short-range communication packet priority.
  • An apparatus for transmitting data in a D2D communication resource pool includes:
  • An acquisition module configured to parse each application data packet in the data resource pool to obtain a target terminal for receiving each application data packet, and evaluate the signal transmission quality of the target terminal corresponding to the transmission application data packet To obtain the target terminal signal transmission quality;
  • a determining module configured to determine a transmission application data packet that can be transmitted to a corresponding target terminal within a transmission time by using an arrival time of each application data packet in a data resource pool;
  • a transmission module configured to obtain the PPPP of each transmission application data packet by using the QCI of the transmission application data packet and the target terminal signal transmission quality, and perform data transmission according to the PPPP of the transmission application data packet;
  • the D2D refers to device-to-device; the QCI refers to the Qos level indication; and the PPPP refers to the short-range communication packet priority.
  • the upper application layer when the terminal performs data transmission in the autonomous resource selection mode, the upper application layer sends data to the lower layer.
  • the data needs to be prioritized with high priority Data, priority transmission, low-priority data need to wait for high-priority data to be transmitted before it can be transmitted, which can more effectively use transmission resources and improve the efficiency of data transmission between multiple terminals in the Sidelink autonomous transmission mode.
  • FIG. 1 is a schematic diagram of data sorting in a sidelink provided by the prior art
  • FIG. 2 is a schematic diagram of sorting multiple terminals according to QCI provided by the prior art
  • 3 is a schematic diagram of sorting data of multiple terminals provided by the prior art according to time;
  • FIG. 4 is a flowchart of a method for transmitting data in a D2D communication resource pool according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a D2D communication resource pool data transmission apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a D2D communication resource pool data transmission method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a D2D communication resource pool data transmission method according to an embodiment of the present invention.
  • the embodiments of the present invention are applied to a terminal in an area without network coverage or a network coverage area, but the network configuration terminal performs an autonomous resource selection mode.
  • FIG. 4 is a flowchart of a method for transmitting data in a D2D communication resource pool according to an embodiment of the present invention. As shown in FIG. 4, it includes:
  • Step S401 parse each application data packet in the data resource pool to obtain a target terminal for receiving each application data packet;
  • Step S402 Use the arrival time of each application data packet to reach the data resource pool to determine a transmission application data packet that can be transmitted to the corresponding target terminal within the transmission time;
  • Step S403 evaluating the signal transmission quality of the target terminal corresponding to the transmission application data packet to obtain the signal transmission quality of the target terminal;
  • Step S404 Use the QCI of the transmission application data packet and the target terminal signal transmission quality to obtain a PPPP of each transmission application data packet, and perform data transmission according to the PPPP of the transmission application data packet.
  • obtaining the target terminal for receiving each application data packet by analyzing each application data packet in the data resource pool includes: obtaining each application data packet by analyzing each application data packet in the data resource pool. A destination address for each application data packet to obtain a target terminal for receiving each application data packet.
  • determining the transmission application data packet that can be transmitted to the corresponding target terminal within the transmission time by using the arrival time of each application data packet in the data resource pool includes: according to the arrival of each application data packet in the data resource pool Time, sorting each application data packet in the data resource pool according to the order of the arrival time to obtain the time priority of each application data packet; according to the time of each application data packet in the data resource pool, priority Level and the current transmission cycle, determine the transmission application data packet that can be transmitted to the corresponding target terminal within the transmission time.
  • obtaining the signal transmission quality of the target terminal by evaluating the signal transmission quality of the target terminal corresponding to the transmission application data packet includes: determining the DRS or SINR of the target terminal corresponding to the transmission application data packet or The BLER performs evaluation measurements to obtain the target terminal signal transmission quality.
  • FIG. 5 is a schematic diagram of a device for transmitting data in a D2D communication resource pool according to an embodiment of the present invention. As shown in FIG. 5, the device includes an obtaining module 501 for analyzing application data packets in the data resource pool to obtain data.
  • the obtaining module 501 includes: a parsing unit, configured to obtain a destination address of each application data packet by analyzing each application data packet in the data resource pool; and an obtaining unit, configured to obtain the destination address of each application data packet The destination address is used to obtain the target terminal for receiving each application data packet.
  • the determining module 502 includes a sorting unit configured to sort each application data packet in the data resource pool according to the arrival time of each application data packet in the data resource pool, Obtain the time priority of each application data packet; a determining unit, configured to determine, based on the time priority of each application data packet in the data resource pool and the current transmission cycle, a transmission that can be transmitted to the corresponding target terminal within the transmission time Application packet.
  • the obtaining module 501 includes an evaluation and measurement unit, configured to obtain signal transmission quality of the target terminal by evaluating and measuring the DRS or SINR or BLER of the target terminal corresponding to the transmission application data packet.
  • FIG. 6 and Figure 7 different application data from the upper layer of the terminal is transmitted to the underlying data resource pool.
  • the terminal filters the data packets transmitted to each terminal, filters out the data packets that need to be transmitted within the period tn, and then Sort the data packets transmitted by each terminal according to Qos, from PPPP (q), PPPP (q + 1), ..., PPPP (p) (where P> q).
  • the bottom layer of the terminal and the terminal that needs to communicate measure the corresponding signal value, such as measuring the signal condition of the opposite end, such as measuring DRS (Demodulation Reference Signals, demodulation reference signals), SINR (Signal to Interference plus Noise, Ratio, Signal and Interference plus Noise Ratio), sort the terminals according to their signal quality,
  • DRS Demodulation Reference Signals, demodulation reference signals
  • SINR Signal to Interference plus Noise Ratio
  • Signal and Interference plus Noise Ratio sort the terminals according to their signal quality
  • the data resource pools of these terminals are sorted, first by QCI. If multiple terminals have the same QCI data packet, they can be randomly selected. For sorting, the data of the same terminal is preferably continuous. After the data is sorted, it is transmitted down to be mapped to the corresponding MAC layer PDU.
  • the terminal arranges them in descending order according to the signal conditions of the peer terminal.
  • the terminal sets the PPPP data packets in the resource pool, it also arranges the signals in descending order.
  • a weighting method may be used for sorting. For each priority, there is a weighted value, and the corresponding signal strength and signal quality also have a weighted value, and then the PPPP priorities of the data are comprehensively sorted.
  • the terminal when the terminal selects autonomous resources, it comprehensively evaluates the data resources by comprehensively considering factors such as the QCI of the data packet, the arrival time of the data packet, and the target terminal signal of data transmission.
  • the PPPP priority of the data packets in the pool comprehensively sorts the data packets in the resource pool, so that sidelink can perform data transmission more effectively in the process of autonomous data selection and data communication.

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

Abstract

La présente invention se rapporte au domaine technique des communications sans fil D2D basées sur une liaison latérale, et concerne un procédé et un appareil de transmission de données de groupe de ressources de communication D2D. Le procédé consiste : à analyser chaque paquet de données d'application dans un groupe de ressources de données pour obtenir un terminal cible permettant de recevoir chaque paquet de données d'application ; à déterminer, à l'aide du temps d'arrivée lorsque chaque paquet de données d'application arrive au niveau du groupe de ressources de données, un paquet de données d'application de transmission qui peut être transmis au terminal cible correspondant pendant une durée de transmission ; à évaluer la qualité de transmission de signal du terminal cible correspondant au paquet de données d'application de transmission pour obtenir une qualité de transmission de signal de terminal cible ; et à obtenir la PPPP de chaque paquet de données d'application de transmission à l'aide d'un QCI du paquet de données d'application de transmission et de la qualité de transmission de signal de terminal cible, et à réaliser une transmission de données en fonction de la PPPP du paquet de données d'application de transmission.
PCT/CN2019/089071 2018-05-29 2019-05-29 Procédé et appareil de transmission de données de groupe de ressources de communication d2d WO2019228413A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810526743.0 2018-05-29
CN201810526743.0A CN110545536B (zh) 2018-05-29 2018-05-29 一种d2d通信资源池数据传输的方法及装置

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CN110545536B (zh) 2021-10-01
CN110545536A (zh) 2019-12-06

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