WO2020211025A1 - Système de communication cellulaire basé sur une communication d2d en duplex et son procédé de sélection de mode de communication - Google Patents

Système de communication cellulaire basé sur une communication d2d en duplex et son procédé de sélection de mode de communication Download PDF

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Publication number
WO2020211025A1
WO2020211025A1 PCT/CN2019/083155 CN2019083155W WO2020211025A1 WO 2020211025 A1 WO2020211025 A1 WO 2020211025A1 CN 2019083155 W CN2019083155 W CN 2019083155W WO 2020211025 A1 WO2020211025 A1 WO 2020211025A1
Authority
WO
WIPO (PCT)
Prior art keywords
communication
duplex
wireless terminals
full
base station
Prior art date
Application number
PCT/CN2019/083155
Other languages
English (en)
Chinese (zh)
Inventor
冯大权
龙立泰
钱恭斌
Original Assignee
深圳大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳大学 filed Critical 深圳大学
Priority to PCT/CN2019/083155 priority Critical patent/WO2020211025A1/fr
Publication of WO2020211025A1 publication Critical patent/WO2020211025A1/fr

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Classifications

    • 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
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to mobile communication technology, in particular to a cellular communication system based on duplex D2D (Device-to-Device) communication and a communication mode selection method thereof.
  • duplex D2D Device-to-Device
  • the traditional cellular communication technology uses base station-based two-hop transmission, that is, the calling user sends a message to the base station, and the base station transmits the message entity to the called user.
  • This communication method occupies double bandwidth for uplink transmission and downlink transmission, which can meet the application scenarios of sparse users.
  • QoS Quality of Service
  • the traditional cellular communication technology based on base station two-hop transmission cannot well meet the increasing demand for delay and reliability of large-scale short-distance P2P (Point-to-Point) communication and the transmission power of mobile communication equipment. Claim.
  • the main purpose of the present invention is to provide a cellular communication system based on duplex D2D communication and a communication mode selection method thereof, so as to improve the Qos quality for users at the edge of a cell under user congestion, reduce short-distance P2P communication delay, and improve Communication reliability reduces the requirements on the transmission power of communication equipment.
  • a cellular communication system based on duplex D2D communication including a base station and a number of wireless terminals that support full-duplex D2D communication and half-duplex D2D communication.
  • a base station When channel conditions permit, control between wireless terminals at the base station It can perform full-duplex D2D communication or half-duplex D2D communication, and can also perform cellular communication through the base station, and the base station detects the current channel conditions of the wireless terminal in real time;
  • the base station controls the full-duplex D2D communication between the wireless terminals;
  • the base station controls the half-duplex D2D communication between the wireless terminals;
  • the base station controls wireless terminals to perform cellular communication through the base station.
  • the uplink frequency band of the cellular communication system is multiplexed.
  • data transmission is performed at an optimal transmission rate.
  • full-duplex D2D communication and the half-duplex D2D communication are both D2D communication based on the PC5 link, or both are D2D communication based on the device-to-network relay.
  • a communication mode selection method based on duplex D2D communication comprising:
  • the base station detects the current channel conditions of the wireless terminal in real time, and the wireless terminal supports full-duplex D2D communication and half-duplex D2D communication;
  • the base station controls the full-duplex D2D communication between the wireless terminals;
  • the base station controls the half-duplex D2D communication between the wireless terminals;
  • the base station controls wireless terminals to perform cellular communication through the base station.
  • the uplink frequency band of the cellular communication system is multiplexed.
  • data transmission is performed at an optimal transmission rate.
  • full-duplex D2D communication and the half-duplex D2D communication are both D2D communication based on the PC5 link, or both are D2D communication based on the device-to-network relay.
  • a computer-readable storage medium has a computer program stored thereon, and when the computer program is executed by a processor, the method for selecting a communication mode as described above is realized.
  • An electronic device installed in a base station including a memory, a processor, and a computer program that is stored in the memory and can run on the processor.
  • the processor executes the computer program, the implementation is as described above Communication mode selection method.
  • the present invention has the following advantages and beneficial effects:
  • the present invention introduces duplex D2D communication technology on the basis of the existing cellular network, detects the current channel conditions, and selects full-duplex D2D communication, half-duplex D2D communication or traditional cellular communication mode for wireless terminal
  • the choice of communication mode is flexible, and it has a higher degree of communication freedom, which can improve the throughput of the cellular communication system, thereby improving the Qos quality for users in crowded situations or for cell edge users, and reducing short-distance P2P communication delays. Improve communication reliability.
  • the present invention uses the gain brought by the full-duplex D2D communication technology to short-distance communication to increase the transmission rate, and also effectively reduces the requirements for the transmission power of the wireless device.
  • the present invention supports various QoS requirements, conforms to the development trend of future wireless networks, is an important foundation for the future large-scale Internet of Things, and is also an important technology carrier for future 5G communications.
  • Fig. 1 is a schematic diagram of the composition principle of a cellular communication system based on duplex D2D communication according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for selecting a communication mode of a cellular communication system based on duplex D2D communication according to the second embodiment of the present invention.
  • the cellular communication system based on duplex D2D communication includes a base station 1 and a number of wireless terminals 2 that support full-duplex D2D communication and half-duplex D2D communication.
  • the wireless terminals 2 can perform full-duplex D2D communication or half-duplex D2D communication under the control of the base station 1, and can also perform cellular communication through the base station 1.
  • D2D is Device-to-Device, and D2D communication is also called terminal pass-through.
  • D2D communication technology refers to a communication method in which two peer user nodes communicate directly.
  • each user node can send and receive signals, and has the function of automatic routing (forwarding messages). Participants of the network share part of their own hardware resources, including information processing, storage, and network connection capabilities. These shared resources provide services and resources to the network and can be directly accessed by other users without passing through intermediate entities.
  • user nodes play the roles of server and client at the same time, and users can be aware of each other's existence and self-organize to form a virtual or actual group.
  • Duplex communication allows data to be transmitted in both directions between two devices.
  • Duplex communication includes full-duplex communication and half-duplex communication.
  • Full duplex (Full Duplex) communication allows data to be transmitted in both directions at the same time
  • half duplex (Half Duplex) communication also allows data to be transmitted in both directions, but not in both directions.
  • the base station 1 detects the current channel conditions of the wireless terminal 2 in real time, and controls the communication between the wireless terminals 2 according to the current channel conditions of the wireless terminal 2.
  • the base station 1 controls the full-duplex D2D communication between the wireless terminals 2.
  • the base station 1 controls the wireless terminals 2 to perform the half-duplex D2D communication.
  • base station 1 controls wireless terminals 2 to perform cellular communication through base station 1.
  • the D2D device will equally share the orthogonal frequency resources of the cellular communication system with other cellular communication devices.
  • wireless terminals 2 perform full-duplex D2D communication and half-duplex communication In D2D communication, the uplink frequency band of the cellular communication system can be reused to achieve better utilization of spectrum resources and improve communication quality.
  • data transmission can be performed at an optimal transmission rate to improve communication performance.
  • both full-duplex D2D communication and half-duplex D2D communication are D2D communication based on the PC5 link, or both are D2D communication based on device-to-network relay.
  • both full-duplex D2D communication and half-duplex D2D communication adopt ProSe-D2D (Proximity Services Device to Device, D2D-based short-range service) communication protocol.
  • the ProSe-D2D communication protocol is 3GPP-Rel-12 (3rd Generation Partnership Project Release-12).
  • the second embodiment of the present invention provides a method for selecting a communication mode of a cellular communication system based on duplex D2D communication.
  • the cellular communication system includes a base station 1 and a number of wireless terminals 2 supporting full-duplex D2D communication and half-duplex D2D communication. If permitted, the wireless terminals 2 can perform full-duplex D2D communication or half-duplex D2D communication under the control of the base station 1, and can also perform cellular communication through the base station 1.
  • the communication mode selection method includes:
  • the base station 1 detects the current channel conditions of the wireless terminal 2 in real time, and controls the communication between the wireless terminals 2 according to the current channel conditions of the wireless terminal 2.
  • the base station 1 controls the full-duplex D2D communication between the wireless terminals 2.
  • the base station 1 controls the wireless terminals 2 to perform the half-duplex D2D communication.
  • base station 1 controls wireless terminals 2 to perform cellular communication through base station 1.
  • the uplink frequency band of the cellular communication system is reused.
  • Both full-duplex D2D communication and half-duplex D2D communication are D2D communication based on the PC5 link, or both are D2D communication based on device-to-network relay.
  • the third embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored.
  • the computer storage medium can also be U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), RAM, magnetic disks or optical disks and other media that can store program codes.
  • the fourth embodiment of the present invention also provides an electronic device, which is installed in a base station and includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor.
  • the processor When the computer program is executed, the communication mode selection method of the second embodiment is implemented.

Landscapes

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

Abstract

L'invention concerne un système de communication cellulaire basé sur une communication D2D en duplex et son procédé de sélection de mode de communication. Une technologie de communication D2D en duplex est présentée sur la base d'un réseau cellulaire existant. Au moyen de la détection de l'état de canal actuel et de ce fait de la sélection d'un mode de communication D2D en duplex intégral, d'un mode de communication D2D semi-duplex ou d'un mode de communication cellulaire classique pour réaliser une communication entre des terminaux sans fil, les modes de communication sont sélectionnés de manière flexible, le degré de liberté de communication est relativement élevé et le débit du système de communication cellulaire peut être amélioré, ce qui permet d'améliorer la QoS dans la condition d'encombrements d'utilisateurs ou pour des utilisateurs de périphérie de cellules, de réduire le retard de communication P2P à courte distance et d'améliorer la fiabilité de communication. Selon la présente invention, la vitesse de transmission est améliorée à l'aide d'un gain apporté à une communication courte distance par une technologie de communication D2D en duplex intégral et les exigences pour la puissance de transmission d'un dispositif sans fil sont également efficacement réduites. La présente invention prend en charge diverses exigences de QoS, se conforme à la tendance de développement future de réseaux sans fil, sera une base importante pour l'Internet des objets à grande échelle dans le futur et sera également une porteuse technique importante pour une communication 5G dans le futur.
PCT/CN2019/083155 2019-04-18 2019-04-18 Système de communication cellulaire basé sur une communication d2d en duplex et son procédé de sélection de mode de communication WO2020211025A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/083155 WO2020211025A1 (fr) 2019-04-18 2019-04-18 Système de communication cellulaire basé sur une communication d2d en duplex et son procédé de sélection de mode de communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/083155 WO2020211025A1 (fr) 2019-04-18 2019-04-18 Système de communication cellulaire basé sur une communication d2d en duplex et son procédé de sélection de mode de communication

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WO2020211025A1 true WO2020211025A1 (fr) 2020-10-22

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104869527A (zh) * 2015-04-10 2015-08-26 电信科学技术研究院 一种进行数据传输的方法和设备
WO2015147617A1 (fr) * 2014-03-28 2015-10-01 엘지전자 주식회사 Procédé pour une opération de dispositif à dispositif (d2d) réalisée par un terminal dans un système de communication sans fil, et terminal utilisant le procédé
CN106068670A (zh) * 2014-03-21 2016-11-02 太阳专利信托公司 D2d通信的调度请求过程

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106068670A (zh) * 2014-03-21 2016-11-02 太阳专利信托公司 D2d通信的调度请求过程
WO2015147617A1 (fr) * 2014-03-28 2015-10-01 엘지전자 주식회사 Procédé pour une opération de dispositif à dispositif (d2d) réalisée par un terminal dans un système de communication sans fil, et terminal utilisant le procédé
CN104869527A (zh) * 2015-04-10 2015-08-26 电信科学技术研究院 一种进行数据传输的方法和设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LIU, YI ET AL.: "Resource Allocation Algorithm based Joint Optimization for D2D Communications in Cellular Networks", JOURNAL OF JILIN UNIVERSITY (ENGINEERING AND TECHNOLOGY EDITION), vol. 50, no. 1, 10 January 2020 (2020-01-10), pages 306 - 314, XP055754883, DOI: 20191212143508X *

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