WO2019221509A1 - Procédé de réception d'informations de commande mis en œuvre par un terminal dans un système de communication sans fil et terminal utilisant ledit procédé - Google Patents

Procédé de réception d'informations de commande mis en œuvre par un terminal dans un système de communication sans fil et terminal utilisant ledit procédé Download PDF

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Publication number
WO2019221509A1
WO2019221509A1 PCT/KR2019/005828 KR2019005828W WO2019221509A1 WO 2019221509 A1 WO2019221509 A1 WO 2019221509A1 KR 2019005828 W KR2019005828 W KR 2019005828W WO 2019221509 A1 WO2019221509 A1 WO 2019221509A1
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WO
WIPO (PCT)
Prior art keywords
coreset
default
terminal
monitoring
control information
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Application number
PCT/KR2019/005828
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English (en)
Korean (ko)
Inventor
서인권
이윤정
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엘지전자 주식회사
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Publication of WO2019221509A1 publication Critical patent/WO2019221509A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to wireless communication, and more particularly, to a method for receiving control information performed by a terminal in a wireless communication system and a terminal using the method.
  • the present invention proposes a method of determining a separate CORESET and SS set to receive paging related information, system information, random access related information, and the like, and using the same.
  • the present invention has been made in an effort to provide a method for receiving control information performed by a terminal in a wireless communication system and a terminal using the method.
  • a method for receiving control information performed by a terminal in a wireless communication system determines a default control resource set (CORESET) and a default search space (SS) set for specific control information, and determines the specific based on the default CORESET and the default SS set.
  • Receives control information wherein the default CORESET is independently determined for each bandwidth part, and the specific control information is at least one of paging related information, system information, or random access related information. It is characterized by.
  • the monitoring opportunity or the monitoring period of the default SS set may be independently set according to the type of the specific control information.
  • the default CORESET may be a CORESET having an index of the lowest value among CORESETs except for a CORESET related to an initial access procedure or a CORESET set by common signaling.
  • the terminal determines the default CORESET and SS set for receiving specific control information, and by using the received specific control information, it is possible to control the flexible and efficient control resources compared to the prior art. Furthermore, according to the present invention, the default CORESET may be determined for each bandwidth part, and thus, it is possible to receive control information more quickly without the need to perform the bandwidth part switching operation as compared with the prior art.
  • FIG. 8 is a diagram showing a difference between a conventional control region and a CORESET in the NR.
  • FIG. 13 schematically illustrates an example in which a method for receiving control information performed by a terminal according to an embodiment of the present invention is applied.
  • FIG. 15 illustrates a wireless communication device according to an embodiment of the present invention.
  • 16 is a block diagram illustrating the components of a transmitting device 1810 and a receiving device 1820 implementing the present invention.
  • FIG. 18 shows another example of a signal processing module structure in the transmission device 1810.
  • E-UTRAN Evolved-UMTS Terrestrial Radio Access Network
  • LTE Long Term Evolution
  • the E-UTRAN includes a base station (BS) 20 that provides a control plane and a user plane to a user equipment (UE) 10.
  • the terminal 10 may be fixed or mobile and may be called by other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), a wireless device (Wireless Device), and the like.
  • the base station 20 refers to a fixed station communicating with the terminal 10, and may be referred to by other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), an access point, and the like.
  • eNB evolved-NodeB
  • BTS base transceiver system
  • access point and the like.
  • the functions of the MAC layer include mapping between logical channels and transport channels and multiplexing / demultiplexing into transport blocks provided as physical channels on transport channels of MAC service data units (SDUs) belonging to the logical channels.
  • the MAC layer provides a service to a Radio Link Control (RLC) layer through a logical channel.
  • RLC Radio Link Control
  • the downlink transmission channel for transmitting data from the network to the UE includes a BCH (Broadcast Channel) for transmitting system information and a downlink shared channel (SCH) for transmitting user traffic or control messages.
  • Traffic or control messages of a downlink multicast or broadcast service may be transmitted through a downlink SCH or may be transmitted through a separate downlink multicast channel (MCH).
  • the uplink transport channel for transmitting data from the terminal to the network includes a random access channel (RACH) for transmitting an initial control message and an uplink shared channel (SCH) for transmitting user traffic or control messages.
  • RACH random access channel
  • SCH uplink shared channel
  • NG-RAN new generation radio access network
  • the NG-RAN may include a gNB and / or eNB that provides a user plane and control plane protocol termination to the terminal.
  • 4 illustrates a case of including only gNB.
  • gNB and eNB are connected to each other by Xn interface.
  • the gNB and eNB are connected to a 5G Core Network (5GC) through an NG interface.
  • 5GC 5G Core Network
  • AMF access and mobility management function
  • UPF user plane function
  • the gNB may configure inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control, radio admission control, and measurement setup and provision. (Measurement configuration & provision), dynamic resource allocation, and the like can be provided.
  • AMF can provide functions such as NAS security, idle state mobility handling, and the like.
  • the UPF may provide functions such as mobility anchoring and PDU processing.
  • the Session Management Function (SMF) may provide functions such as terminal IP address allocation and PDU session control.
  • the frame may consist of 10 ms (milliseconds) and may include 10 subframes composed of 1 ms.
  • ⁇ 0, 1 and 2 are illustrated.
  • the PDCCH may be transmitted through a resource composed of 1, 2, 4, 8, or 16 CCEs.
  • the CCE is composed of six resource element groups (REGs), and one REG is composed of one resource block in the frequency domain and one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.
  • REGs resource element groups
  • OFDM orthogonal frequency division multiplexing
  • the terminal may receive a plurality of resets.
  • the CORESETs 801, 802, and 803 may be referred to as radio resources for control information that the terminal should receive, and may use only a part of the system band instead of the entire system band.
  • the base station may allocate CORESET to each terminal and transmit control information through the assigned CORESET. For example, in FIG. 8, the first CORESET 801 may be allocated to the terminal 1, the second CORESET 802 may be allocated to the second terminal, and the third CORESET 803 may be allocated to the terminal 3.
  • the terminal in the NR may receive control information of the base station even though the terminal does not necessarily receive the entire system band.
  • the default SS set may be set differently according to the default CORESET, and each item of the SS set may be set as follows.
  • the monitoring opportunities omitted due to collisions with uplink symbols / slots due to semi-static downlink / uplink configuration are counted in the window, and the omission due to SSB (not counting with the RAR window) is as follows. Only in this case can we assume.
  • the present invention describes a method of configuring a default SS for RAR-SS and message 4 / C-RNTI SS based on SS # 0, or separates RAR-SS and message 4 / C-RNTI SS through separate signaling. Applicable to the case of configuration. In particular, in case of separate signaling, both period / offset / monitoring opportunity may be configured, but only period / offset or SSB index may be configured. If only the period / offset is given, it can be assumed that the current SSB index is configured to configure the monitoring opportunity. Generally, for an unspecified parameter, the parameter is assigned based on SS # 0 / SS # 1. You can assume that you specify a value.
  • FIG. 15 illustrates a wireless communication device according to an embodiment of the present invention.
  • 16 is a block diagram illustrating the components of a transmitting device 1810 and a receiving device 1820 implementing the present invention.
  • the transmitting device and the receiving device may each be a base station or a terminal.
  • the transmitting device 1810 and the receiving device 1820 are transceivers 1812 and 1822 capable of transmitting or receiving radio signals carrying information and / or data, signals, messages, and the like, and various kinds of information related to communication in a wireless communication system. Is connected to components such as the memory 1813 and 1823, the transceivers 1812 and 1822, and the memory 1813 and 1823 to control the components to control the components. Processors 1811 and 1821 configured to control memory 1813 and 1823 and / or transceivers 1812 and 1822 to perform at least one, respectively.
  • the transceiver may be called a transceiver.
  • Processors 1811 and 1821 typically control the overall operation of various modules in a transmitting device or a receiving device.
  • the processors 1811 and 1821 may perform various control functions for performing the present invention.
  • the processors 1811 and 1821 may also be referred to as controllers, microcontrollers, microprocessors, microcomputers, or the like.
  • the processors 1811 and 1821 may be implemented by hardware or firmware, software, or a combination thereof.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • the signal processing process of the receiving device 1820 may be configured as the inverse of the signal processing process of the transmitting device 1810.
  • the transceiver 1822 of the receiving device 1820 may receive a radio signal transmitted by the transmitting device 1810.
  • the transceiver 1822 may include one or a plurality of receive antennas.
  • the transceiver 1822 may restore the baseband signal by frequency down-converting each of the signals received through the receiving antenna.
  • the transceiver 1822 may include an oscillator for frequency downconversion.
  • the processor 1821 may restore and decode data originally intended to be transmitted by the transmission device 1810 by performing decoding and demodulation on the radio signal received through the reception antenna.
  • the signal generator 306 modulates a complex modulation symbol for each antenna port, that is, an antenna specific symbol by a specific modulation scheme, for example, an orthogonal frequency division multiplexing (OFDM) scheme, thereby complex-valued time domain.
  • An OFDM symbol signal can be generated.
  • the signal generator may perform an inverse fast fourier transform (IFFT) on an antenna specific symbol, and a cyclic prefix (CP) may be inserted into a time domain symbol on which the IFFT is performed.
  • IFFT inverse fast fourier transform
  • CP cyclic prefix
  • the OFDM symbol is transmitted to the receiving apparatus through each transmit antenna through digital-to-analog conversion, frequency upconversion, and the like.
  • the signal generator may include an IFFT module and a CP inserter, a digital-to-analog converter (DAC), a frequency uplink converter, and the like.
  • the transmitting device 1810 may scramble the coded bits in the codeword by the scrambler 401 and transmit the coded bits in one codeword through a physical channel.
  • the signal generator 406 may generate a complex-valued time domain (OFDM) orthogonal frequency division multiplexing (OFDM) symbol signal by modulating the complex modulation symbol in a specific modulation scheme, for example, the OFDM scheme.
  • the signal generator 406 may perform an inverse fast fourier transform (IFFT) on an antenna specific symbol, and a cyclic prefix (CP) may be inserted into a time domain symbol on which the IFFT is performed.
  • IFFT inverse fast fourier transform
  • CP cyclic prefix
  • the OFDM symbol is transmitted to the receiving apparatus through each transmit antenna through digital-to-analog conversion, frequency upconversion, and the like.
  • the signal generator 406 may include an IFFT module and a CP inserter, a digital-to-analog converter (DAC), a frequency uplink converter, and the like.
  • the memory 2330 is connected to the processor 2310 and stores information related to the operation of the processor.
  • the memory may be located inside or outside the processor and may be connected to the processor through various technologies such as a wired connection or a wireless connection.
  • the memory 2330 of FIG. 19 may be the memories 1813 and 1823 of FIG. 16.
  • the terminal 19 is only one implementation of the terminal, and the implementation is not limited thereto.
  • the terminal does not necessarily need to include all the elements of FIG. 19. That is, some components, for example, the keypad 2320, the GPS (Global Positioning System) chip 2360, the sensor 2365, the SIM card 2325, etc. may not be essential elements, and in this case, are not included in the terminal. It may not.
  • eMBB focuses on improving data rate, latency, user density, overall capacity and coverage of mobile broadband access.
  • eMBB aims at throughput of around 10Gbps.
  • eMBB goes far beyond basic mobile Internet access and covers media and entertainment applications in rich interactive work, cloud or augmented reality.
  • Data is one of the key drivers of 5G and may not see dedicated voice services for the first time in the 5G era.
  • voice is expected to be treated as an application simply using the data connection provided by the communication system.
  • the main reason for the increased traffic volume is the increase in content size and the increase in the number of applications requiring high data rates.
  • Streaming services (audio and video), interactive video, and mobile Internet connections will become more popular as more devices connect to the Internet.
  • Cloud storage and applications are growing rapidly in mobile communication platforms, which can be applied to both work and entertainment.
  • Cloud storage is a special use case that drives the growth of uplink data rates.
  • 5G is also used for remote tasks in the cloud and requires much lower end-to-end delays to maintain a good user experience when tactile interfaces are used.
  • cloud gaming and video streaming are another key factor in increasing the need for mobile broadband capabilities.
  • Entertainment is essential in smartphones and tablets anywhere, including in high mobility environments such as trains, cars and airplanes.
  • Another use case is augmented reality and information retrieval for entertainment.
  • augmented reality requires very low latency and instantaneous amount of data.
  • URLLC enables devices and machines to communicate very reliably and with very low latency and high availability, making them ideal for vehicle communications, industrial control, factory automation, telesurgery, smart grid and public safety applications.
  • URLLC aims for a delay of around 1ms.
  • URLLC includes new services that will transform the industry through ultra-reliable / low-latency links such as remote control of key infrastructure and autonomous vehicles. The level of reliability and delay is essential for smart grid control, industrial automation, robotics, drone control and coordination.
  • 5G can complement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS) as a means of providing streams that are rated at hundreds of megabits per second to gigabits per second. This high speed may be required to deliver TVs at resolutions of 4K or higher (6K, 8K and higher) as well as virtual reality (VR) and augmented reality (AR).
  • VR and AR applications include nearly immersive sporting events. Certain applications may require special network settings. For example, in a VR game, the game company may need to integrate the core server with the network operator's edge network server to minimize latency.
  • Smart grids interconnect these sensors using digital information and communication technologies to gather information and act accordingly. This information can include the behavior of suppliers and consumers, allowing smart grids to improve the distribution of fuels such as electricity in efficiency, reliability, economics, sustainability of production, and in an automated manner. Smart Grid can be viewed as another sensor network with low latency.
  • Wireless and mobile communications are becoming increasingly important in industrial applications. Wiring is expensive to install and maintain. Thus, the possibility of replacing the cable with a reconfigurable wireless link is an attractive opportunity in many industries. However, achieving this requires that the wireless connection operates with similar cable delay, reliability, and capacity, and that management is simplified. Low latency and very low error probability are new requirements that need to be connected in 5G.

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

Abstract

L'invention concerne un procédé de réception d'informations de commande mis en œuvre par un terminal dans un système de communication sans fil. Le procédé est caractérisé par la détermination d'un ensemble de ressources de commande (CORESET) par défaut et d'un ensemble d'espaces de recherche (SS) par défaut par rapport à des informations de commande particulières et la réception des informations de commande particulières en fonction du CORESET par défaut et de l'ensemble SS par défaut, le CORESET par défaut étant déterminé indépendamment pour chaque partie de bande passante, et les informations de commande particulières constituant des informations de radiorecherche, des informations de système et/ou des informations d'accès aléatoire.
PCT/KR2019/005828 2018-05-15 2019-05-15 Procédé de réception d'informations de commande mis en œuvre par un terminal dans un système de communication sans fil et terminal utilisant ledit procédé WO2019221509A1 (fr)

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US201862672036P 2018-05-15 2018-05-15
US62/672,036 2018-05-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022135029A1 (fr) * 2020-12-25 2022-06-30 展讯通信（上海）有限公司 Procédé et appareil de commutation d'ensemble d'espaces de recherche, et support de stockage lisible

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WO2018030864A1 (fr) * 2016-08-11 2018-02-15 Samsung Electronics Co., Ltd. Procédé et appareil de transmission de données dans des réseaux cellulaires de nouvelle génération

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WO2018030864A1 (fr) * 2016-08-11 2018-02-15 Samsung Electronics Co., Ltd. Procédé et appareil de transmission de données dans des réseaux cellulaires de nouvelle génération

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HUAWEI ET AL.: "Remaining issues on simultaneous reception and transmission over CCs and BWPs", R1-1805955. 3GPP TSG RAN WG1 MEETING #93, 11 May 2018 (2018-05-11), Busan, Korea, XP051441174 *
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022135029A1 (fr) * 2020-12-25 2022-06-30 展讯通信（上海）有限公司 Procédé et appareil de commutation d'ensemble d'espaces de recherche, et support de stockage lisible

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