WO2018196737A1 - Procédé et appareil pour une détection de transmission discontinue - Google Patents

Procédé et appareil pour une détection de transmission discontinue Download PDF

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Publication number
WO2018196737A1
WO2018196737A1 PCT/CN2018/084223 CN2018084223W WO2018196737A1 WO 2018196737 A1 WO2018196737 A1 WO 2018196737A1 CN 2018084223 W CN2018084223 W CN 2018084223W WO 2018196737 A1 WO2018196737 A1 WO 2018196737A1
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WO
WIPO (PCT)
Prior art keywords
dci
value
harq process
dtx
process number
Prior art date
Application number
PCT/CN2018/084223
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English (en)
Chinese (zh)
Inventor
孟庆锋
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中兴通讯股份有限公司
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Publication of WO2018196737A1 publication Critical patent/WO2018196737A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • 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 disclosure relates to the field of wireless communications, and in particular to a method and apparatus for Discontinuous Transmission (DTX) detection.
  • DTX Discontinuous Transmission
  • the basic process of the DTX method for detecting the physical downlink control channel (PDCCH) of the traditional LTE service is: first, the downlink control information (Downlink Control Information, DCI) of the downlink transmission is prepared on the base station side, and then a new one is generated. The HARQ process, and the HARQ process ID is filled in the corresponding field of the DCI.
  • DCI Downlink Control Information
  • the base station sends the DCI and the data together to the user equipment (UE); on the UE side, if the DCI is not detected (demodulated), Then no HARQ feedback is sent to the base station.
  • the HARQ feedback needs to satisfy the HARQ timing. Therefore, the base station side can detect the HARQ feedback at a specified time point, and if no HARQ feedback is detected, it is considered that DTX occurs.
  • the downlink channel is shared by multiple UEs, does not have HARQ feedback, and each downlink transmission is equivalent to one new transmission.
  • the base station side cannot perform DTX detection of the PDCCH because it does not have the HARQ timing guarantee.
  • the cluster UE is passively received. In the area where the signal is poor, the UE may even detect (demodulate) the PDCCH, so that there is no downlink data transmission at all, so the UE cannot perform the DTX of the PDCCH. Detection.
  • An embodiment of the present disclosure provides a method for DTX detection, including the steps of: transmitting DCI to a UE during downlink data transmission, so that a value of a HARQ process number field in the DCI detected by the UE through the UE Whether the preset rule is met to determine whether there is a DTX, where the value of the HARQ process number field in the DCI is a preset value that satisfies the preset rule when the DCI is sent to the UE.
  • An embodiment of the present disclosure further provides a method for DTX detection, including the steps of: receiving DCI sent by a base station when performing downlink data transmission; and determining whether a value of a HARQ process number field in the DCI is detected
  • the preset rule is used to determine whether there is a DTX, where the value of the HARQ process number field in the DCI is a preset value that satisfies the preset rule when the base station sends the DCI.
  • An embodiment of the present disclosure further provides an apparatus for DTX detection, including: a sending module, configured to: when performing downlink data transmission, send downlink control information DCI to a user equipment UE, so that the UE passes the detection thereof Whether the value of the hybrid automatic repeat request HARQ process number field in the received DCI satisfies a preset rule to determine whether there is DTX, where the HARQ process number field in the DCI is sent when the DCI is sent to the UE The value is a preset value that satisfies the preset rule.
  • An embodiment of the present disclosure further provides an apparatus for DTX detection, including: a receiving module configured to receive a DCI transmitted by a base station when performing downlink data transmission; and a detecting module configured to pass the detected Determining whether the value of the HARQ process number field in the DCI meets a preset rule to determine whether there is DTX, where the value of the HARQ process number field in the DCI satisfies the preset when the base station sends the DCI The default value of the rule.
  • Embodiments of the present disclosure also provide a base station including an apparatus for DTX detection in accordance with the present disclosure.
  • Embodiments of the present disclosure also provide a terminal including an apparatus for DTX detection according to the present disclosure.
  • Embodiments of the present disclosure also provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, causes the processor to perform the method for DTX detection of the present disclosure.
  • FIG. 1 is a flow chart of a method for DTX detection in accordance with an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a method for DTX detection according to another embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of an apparatus for DTX detection, in accordance with an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of an apparatus for DTX detection in accordance with another embodiment of the present disclosure.
  • the DCI may include information such as a HARQ process ID and a resource block (RB). Since the cluster communication has no HARQ feedback and no HARQ retransmission, the HARQ process number field is meaningless to the cluster. Generally, the value of the field is fixed to 0. However, in a traditional LTE network, this field is bound to a downlink transmission and has special significance.
  • this field can be utilized. Since each downlink transmission is a new transmission, the value of the HARQ process number field can be continuously incremented continuously, and if the field in the DCI detected by the terminal is not continuously incremented, it is considered that DTX exists in the downlink transmission. .
  • the base station can optimize the transmission of the PDCCH. For example, the power of the PDCCH can be controlled, and the power of the PDCCH can be appropriately reduced when the signal is demodulated, and vice versa, the power can be raised to improve the demodulation performance.
  • FIG. 1 is a flow chart of a method for DTX detection in accordance with an embodiment of the present disclosure.
  • a method for DTX detection may include step S101.
  • step S101 when downlink data transmission is performed, the DCI is sent to the UE, so that the UE determines whether DTX exists by whether the value of the HARQ process number field in the detected DCI satisfies a preset rule.
  • the value of the HARQ process number field in the DCI is a preset value that satisfies a preset rule.
  • the above step S101 can be performed by a device such as a base station.
  • the step of transmitting a DCI to a UE may include transmitting a DCI to a UE by using a PDCCH.
  • the preset rule may be that the value of the HARQ process number field in the DCI is a continuously increasing integer.
  • the integers of consecutive increments of the loop may be 0, 1, 2, ..., 7; and in the time division duplex TDD mode, the integers of consecutive increments of the loop may be 0, 1, 2,...,15.
  • FIG. 2 is a flow chart of a method for DTX detection in accordance with another embodiment of the present disclosure.
  • a method for DTX detection may include steps S201 and S202.
  • step S201 when downlink data transmission is performed, the DCI transmitted by the base station is received.
  • step S202 it is determined whether DTX exists by detecting whether the value of the HARQ process number field in the DCI satisfies a preset rule.
  • the value of the HARQ process number field in the DCI is a preset value that satisfies the preset rule.
  • the above steps S201 to S202 can be performed by a device such as a terminal.
  • the step of receiving DCI transmitted by the base station may include: receiving, by the PDCCH, a DCI sent by the base station.
  • the preset rule may be that the value of the HARQ process number field in the DCI is a continuously increasing integer.
  • the cyclically increasing integers may be 0, 1, 2, ..., 7; and in the time division duplex TDD mode, the consecutive increments of the integer are 0, 1, 2 ,...,15.
  • a series of operations may be performed: the base station and the terminal successfully establish a cluster group call and maintain; the base station initializes the HARQ process number of the group call to 0; and the base station side has downlink data to be sent to the terminal, which is required.
  • the DCI is prepared.
  • the base station sets the value of the HARQ process ID field in the DCI to the local HARQ process ID of the group call each time the downlink data transmission is performed.
  • the base station may set the value of the local HARQ process number field to a continuously increasing integer (ie, a preset value that meets a preset condition). For example, during the cluster group call and hold process, each time the base station performs downlink data transmission, the value of the HARQ process number field in the transmitted DCI is incremented by one step.
  • the FDD mode is continuously incremented from 0 to 7 cycles, that is, when the preset value is 7, after the step is incremented by 1, the preset value loop is 0.
  • the TDD mode is continuously incremented from 0 to 15 cycles, that is, when the preset value is 15, the preset value loop is 0 after the step is incremented by 1.
  • the preset condition may also be other conditions, for example, the preset condition may be a sequence that conforms to a certain coding condition.
  • the base station side may set the HARQ process number field to the value of the sequence, and the terminal side may determine whether DTX exists by detecting whether the value of the HARQ process number field matches the sequence.
  • the base station scrambles the DCI with the group call G-RNTI and transmits it to the UE through the PDCCH; the UE uses the G-RNTI to descramble the PDCCH, and detects (descrambles and demodulates) the HARQ process number field in the DCI through it.
  • the value is determined relative to whether the value of the last received HARQ process number field is continuously incremented (ie, whether the preset condition is met) to determine whether DTX exists.
  • the PDCCH detection is considered to be normal, and the UE saves the received HARQ process number to the local; if it is not continuously incremented (ie, does not meet the preset condition), it is considered
  • the PDCCH detects the presence of DTX.
  • the HARQ process ID field in the DCI may be filled with a value that meets a preset condition; when receiving the downlink data, the terminal receives the DCI and It is detected whether the value of the HARQ process number field meets a preset condition, so that it can be determined whether DTX exists.
  • the method can simply and effectively detect whether DTX exists in the transmission of the cluster PDCCH without changing the current protocol.
  • the existing LTE and cluster B-TrunC protocols can be fully utilized by using the methods described in the embodiments of the present disclosure.
  • a method for detecting the DTX of the PDCCH by the cluster terminal is proposed. Based on the detection, the related application of the PDCCH can be performed, for example, the power control of the PDCCH can be performed, which can effectively ensure that the cluster terminal reliably demodulates the PDCCH information and ensures that the downlink air interface resources are fully utilized.
  • FIG. 3 is a schematic diagram of an apparatus for DTX detection in accordance with an embodiment of the present disclosure.
  • an apparatus for DTX detection may include a transmitting module 301.
  • the sending module 301 is configured to send the DCI to the UE when performing downlink data transmission, so that the UE determines whether DTX exists by whether the value of the HARQ process number field in the detected DCI satisfies a preset rule.
  • the value of the HARQ process number field in the DCI is a preset value that satisfies a preset rule.
  • the sending module 301 may be further configured to send the DCI to the UE by using a PDCCH.
  • the above device can operate on a base station. That is, the base station according to the present disclosure may include means for transmitting DTX detection with the transmitting module 301.
  • FIG. 4 is a schematic diagram of an apparatus for DTX detection in accordance with another embodiment of the present disclosure.
  • an apparatus for DTX detection may include a receiving module 401 and a detecting module 402.
  • the receiving module 401 is configured to receive the DCI sent by the base station when performing downlink data transmission.
  • the detecting module 402 is configured to determine whether DTX exists by detecting whether the value of the HARQ process number field in the DCI satisfies a preset rule.
  • the value of the HARQ process number field in the DCI is a preset value that satisfies a preset rule.
  • the receiving module 401 may be further configured to receive the DCI transmitted by the base station through the PDCCH.
  • a terminal may include means for DTX detection having a receiving module 401 and a detecting module 402.
  • the method according to the above embodiments can be implemented by means of a combination of software and a general hardware platform.
  • the method can also be implemented by hardware.
  • the essential part of the technical solution of the present disclosure or the part contributing to the prior art can be implemented in the form of a software product stored in a storage medium (such as ROM/RAM, disk, In the optical disc, and including a number of instructions to cause a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present disclosure.
  • a storage medium such as ROM/RAM, disk, In the optical disc, and including a number of instructions to cause a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present disclosure.
  • the embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a program code.
  • the following operations may be performed: when performing downlink data transmission, sending a DCI to the UE, Determining whether there is DTX through whether the value of the HARQ process number field in the DCI detected by the UE satisfies a preset rule, where the HARQ process number field in the DCI is sent when the DCI is sent to the UE The value is the preset value that satisfies the preset rule.
  • the embodiment of the present disclosure further provides a computer readable storage medium, on which a program code is stored, and when the computer program is executed by the processor, the following operations may be performed: receiving DCI sent by the base station when performing downlink data transmission And determining whether the DTX exists by detecting whether the value of the HARQ process number field in the DCI satisfies a preset rule, where the HARQ process number field in the DCI is sent when the base station sends the DCI The value is a value that satisfies the preset rule.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or A storage medium such as an optical disc that can store program codes.
  • the method steps recited in the above embodiments may be performed by a processor.
  • the various units or steps of the present disclosure may be implemented using a general-purpose computing device, which may be centralized on a single computing device or distributed across multiple computing devices. online.
  • the above-described units or steps of the present disclosure may also be implemented by program code executable by a computing device, wherein the executable program code may be stored in a storage device and executed by the computing device.
  • the methods described in the embodiments of the present disclosure may be performed in a different manner than shown or described herein.
  • the present disclosure is not limited to any particular combination of hardware and software.

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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 et un appareil pour une détection de transmission discontinue (DTX). Le procédé consiste à : lorsque des données de liaison descendante sont transmises, envoyer des informations de commande de liaison descendante (DCI) à un équipement utilisateur (UE), de sorte que l'UE détermine, selon que la valeur d'un champ de numéro de processus d'une requête automatique de répétition hybride (HARQ), détectée par celui-ci, dans les DCI, satisfait à une règle prédéfinie, s'il existe une DTX. Lorsque les DCI sont envoyées à l'UE, la valeur du champ de numéro de processus de HARQ dans les DCI est une valeur prédéfinie satisfaisant à la règle prédéfinie.
PCT/CN2018/084223 2017-04-24 2018-04-24 Procédé et appareil pour une détection de transmission discontinue WO2018196737A1 (fr)

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CN201710276689.4A CN108924965B (zh) 2017-04-24 2017-04-24 一种非连续传输检测的方法、装置、基站及终端

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EP3902170B1 (fr) * 2019-02-15 2023-10-18 Huawei Technologies Co., Ltd. Procédé, appareil et système de communication

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