WO2013064026A1 - Procédé de communication de service périodique, nœud enb et équipement utilisateur - Google Patents

Procédé de communication de service périodique, nœud enb et équipement utilisateur Download PDF

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Publication number
WO2013064026A1
WO2013064026A1 PCT/CN2012/083407 CN2012083407W WO2013064026A1 WO 2013064026 A1 WO2013064026 A1 WO 2013064026A1 CN 2012083407 W CN2012083407 W CN 2012083407W WO 2013064026 A1 WO2013064026 A1 WO 2013064026A1
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WIPO (PCT)
Prior art keywords
downlink
uplink
enb
scheduling parameter
resource scheduling
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PCT/CN2012/083407
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English (en)
Chinese (zh)
Inventor
夏金环
冯淑兰
常俊仁
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华为技术有限公司
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Publication of WO2013064026A1 publication Critical patent/WO2013064026A1/fr

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Classifications

    • 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
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • 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 priority of the invention is the priority of the Chinese Patent Application Serial No. PCT Application Serial No. 2011-A.
  • the present invention relates to the field of communications technologies, and in particular, to a communication method for a periodic service, and an eNB and a UE. Background technique
  • LTE Long Term Evolution
  • eNB Evolved Node Base-station
  • a service scenario is periodic, with a fixed packet size and is primarily upstream. For example: meter reading, cycle monitoring, status timing reporting, etc.
  • the UE When performing the scheduling resource, the UE needs to detect the physical downlink control channel (PDCCH) to obtain the uplink scheduling information carried by the eNB in the PDCCH, and analyze the location of the uplink resource used for transmitting the uplink data. And the transmission format used for transmitting the uplink data, so that the uplink data is transmitted, and the complexity of detecting the PDCCH is very high, which is disadvantageous for the UE to save power.
  • PDCCH physical downlink control channel
  • the embodiments of the present invention provide a communication method for a periodic service, and an eNB and a UE, which are less complex and more energy-efficient for realizing resource scheduling.
  • a communication method for periodic services including:
  • the periodic uplink resource scheduling parameter is used to determine an uplink resource and a transmission format of the uplink data, including: a location of the uplink resource in a time domain dimension, a frequency domain dimension, and a transmission format of the uplink data;
  • An eNB including:
  • An eNB sending unit configured to send a periodic uplink resource scheduling parameter to the user equipment UE, where the row resource is in a time domain dimension, a frequency domain dimension, and an uplink data transmission format;
  • the eNB receiving unit is configured to receive uplink data that is sent by the UE according to the uplink resource and the transmission format of the uplink data.
  • a communication method for periodic services including:
  • a UE comprising:
  • the UE receiving unit is configured to receive a periodic uplink resource scheduling parameter sent by the base station eNB, where the basic uplink resource scheduling parameter includes: a location of the uplink resource in a time domain dimension, a frequency domain dimension, and a transmission format of the uplink data;
  • a UE sending unit configured to send uplink data to the eNB according to an uplink resource and a transmission format of the uplink data.
  • the UE determines the uplink resource and the transmission format for transmitting the uplink data according to the received periodic uplink resource scheduling parameter, and does not need to detect the PDCCH, thereby reducing the complexity of resource scheduling and making the UE more power-saving.
  • the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.
  • FIG. 1 is a flowchart of a communication method of an eNB for a periodic service according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a UE communication method for a periodic service according to an embodiment of the present invention
  • Schematic diagram of the communication process with the UE
  • FIG. 4 is a structural block diagram of an eNB according to an embodiment of the present disclosure.
  • FIG. 5 is a structural block diagram of another eNB according to an embodiment of the present disclosure.
  • FIG. 6 is a structural block diagram of a UE according to an embodiment of the present disclosure.
  • FIG. 7 is a structural block diagram of another UE according to an embodiment of the present disclosure.
  • FIG. 8 is a structural block diagram of a communication system for periodic services according to an embodiment of the present invention.
  • the embodiment of the present invention provides a communication method for an eNB of a periodic service.
  • the method includes: Step 101: Send a periodic uplink resource scheduling parameter to a UE, so that the UE determines the transmission uplink according to the periodic uplink resource scheduling parameter.
  • the uplink resource scheduling mode of the data, the periodic uplink resource scheduling parameters include: the location of the uplink resource in the time domain dimension, the frequency domain dimension, and the transmission format of the uplink data;
  • the foregoing periodic uplink resource scheduling parameter is directly sent to the UE.
  • the location of the uplink resource in the frequency domain is indicated by an index of a physical resource block (PRB), which can be represented by a bitmap of the PRB, and the bit 1 indicates that the PRB is a configured periodic uplink resource, bit 0.
  • PRB physical resource block
  • the transmission format of the uplink data includes a Modulation Coding Scheme (MCS), and may also include other transmission parameters, such as a Transmitted Power Control (TPC), a Redundant Version (RV), and a reference signal.
  • MCS Modulation Coding Scheme
  • TPC Transmitted Power Control
  • RV Redundant Version
  • RCS Redundant Version
  • CQI non-periodic feedback channel quality indicator
  • the UE sends the periodic uplink resource scheduling parameters to the UE, so that the UE determines the uplink resource and the transmission format for transmitting the uplink data according to the periodic uplink resource scheduling parameter, and does not need to detect the PDCCH, thereby reducing the complexity of resource scheduling and enabling the UE. More energy saving.
  • the embodiment of the present invention further provides a UE communication method for a periodic service.
  • the method includes: Step 201: Receive a periodic uplink resource scheduling parameter sent by an eNB, and determine, according to the periodic uplink resource scheduling parameter, the uplink data to be transmitted.
  • the uplink resource scheduling parameter includes: an uplink resource in a time domain dimension, a frequency domain dimension, and an uplink data transmission format; specifically, the periodic uplink resource scheduling parameter is the same as the foregoing embodiment, This will not be repeated here.
  • Step 202 Send uplink data to an eNB.
  • the transmission format of the uplink data transmits uplink data to the eNB. And the transmission format does not need to detect the PDCCH, thereby reducing the complexity of resource scheduling and making the UE more power-saving.
  • the communication process between the eNB and the UE is taken as an example to further describe the communication method of the periodic service according to the present invention. As shown in FIG. 3, the method includes the following steps:
  • Step 302 The eNB sends a periodic uplink resource scheduling parameter and a downlink resource scheduling parameter to the UE, so that the UE determines an uplink resource and a transmission format for transmitting uplink data and transmits downlink data according to the periodic uplink resource scheduling parameter and the downlink resource scheduling parameter.
  • the downlink resource scheduling parameters include: the location of the uplink resource in the time domain dimension, the frequency domain dimension, and the uplink data transmission format, and the downlink resource scheduling parameters include: the location of the downlink resource in the frequency domain dimension And the transmission format of the downlink data.
  • the periodic uplink resource scheduling parameter or/and the downlink resource scheduling parameter are sent to the UE through a high-level Radio Resource Control (RRC) signaling; when the periodic uplink resource scheduling parameter or/and the downlink resource scheduling parameter is updated. And transmitting, by the radio resource control RRC reconfiguration signaling, the updated periodic uplink resource scheduling parameter or/and the downlink resource scheduling parameter to the UE.
  • RRC Radio Resource Control
  • the method for defining a specific resource scheduling parameter is the same as that of the foregoing embodiment, and details are not described herein again.
  • the eNB may also send only periodic uplink resource scheduling parameters and not send downlink resource scheduling parameters.
  • the location of the uplink resource or the downlink resource in the frequency domain dimension is obtained by means of random mapping.
  • multiple physical resource block PRB locations are configured for the UE by using radio resource control RRC signaling; each PRB location is selected as an uplink resource or a downlink resource for the UE according to a random function in multiple PRB locations in each period. ;
  • NpDscHiocK is the number of PB locations of the physical resource block
  • K is the number of subframe identifiers
  • the value is 0 ⁇ 9
  • mod is the operator of the remainder of the two-digit division
  • Z is the position index of the physical resource block PRB.
  • TTI Transmission Time Interval
  • Step 303 The UE receives the periodic uplink resource scheduling parameter and the downlink resource scheduling parameter sent by the eNB, and determines, according to the periodic uplink resource scheduling parameter and the downlink resource scheduling parameter, the uplink resource and the transmission format for transmitting the uplink data, and the downlink resource and the downlink data for transmitting the downlink data.
  • the transmission format, the periodic uplink resource scheduling parameters include: the location of the uplink resource in the time domain dimension, the frequency domain dimension, and the transmission format of the uplink data
  • the downlink resource scheduling parameters include: the location of the downlink resource in the frequency domain dimension and the downlink data. Transport format.
  • the radio resource control RRC signaling receives the periodic uplink resource scheduling parameter and/or the downlink resource scheduling parameter sent by the eNB; when the periodic uplink resource scheduling parameter and/or the downlink resource scheduling parameter is updated, the RRC is controlled by the radio resource.
  • Reconfiguration signaling receives updates sent by the eNB
  • the UE may also receive only periodic uplink resource scheduling parameters and not receive downlink resource scheduling parameters.
  • Step 304 The UE sends uplink data to the eNB.
  • the source transmits uplink data to the eNB in the time domain dimension, the location on the frequency domain dimension, and the transmission format of the uplink data.
  • Step 305 The eNB receives uplink data sent by the UE.
  • Step 306 After receiving the uplink data sent by the UE and sending the downlink resource scheduling parameter to the UE, the eNB feeds back the joint indication information to the UE, where the joint indication information includes an uplink retransmission indication and a downlink indication, where the uplink retransmission indication is used to indicate whether there is an uplink. The data needs to be retransmitted, and the downlink indication is used to indicate whether there is downlink data to be transmitted.
  • the uplink retransmission indication is ACK/NACK
  • the ACK is Acknowledgement, that is, there is no uplink data to be retransmitted
  • the NACK is Negative Acknowledgement, that is, the uplink data needs to be retransmitted, where one bit is Indicates the ACK/NACK result and the other bit indicates the downlink indication. If no uplink data needs to be retransmitted, the configured uplink resources are scheduled to be used by other UEs in this period.
  • Step 307 The UE receives the joint indication information fed back by the eNB, where the joint indication information includes an uplink retransmission indication and a downlink indication, where the uplink retransmission indication is used to indicate whether uplink data needs to be retransmitted, and the downlink indication is used to indicate whether downlink data needs to be transmitted. .
  • the UE determines, according to the joint indication information, whether uplink data needs to be retransmitted and whether downlink data needs to be transmitted. If no uplink data needs to be retransmitted and no downlink data needs to be transmitted, the UE directly shuts down the transceiver and enters a sleep state until the next cycle.
  • Step 308 If the uplink data needs to be retransmitted, the UE, after receiving the joint indication information fed back by the eNB, retransmits the uplink data to the eNB according to the location of the uplink resource in the frequency domain dimension and the transmission format in the uplink resource scheduling parameter.
  • Step 309 If there is uplink data to be retransmitted, the eNB receives the uplink data retransmitted by the UE. If no uplink data is required to be retransmitted, the configured uplink resources are scheduled to be used by other UEs (mainly other UEs of non-cyclical services) in this period.
  • Step 310 If downlink data needs to be transmitted, the eNB sends downlink data to the UE after feeding back the joint indication information to the UE.
  • the downlink resource scheduling parameter is sent to the UE, the downlink resource is sent according to the downlink resource scheduling parameter in the frequency domain dimension and the downlink data transmission format; if the downlink resource scheduling parameter is not sent to the UE, Sending downlink resources by means of PDCCH The location in the frequency domain dimension and the transmission format of the downlink data and send downlink data to the UE.
  • the downlink data may include one or any combination of the following: updated periodic uplink resource scheduling parameters, updated downlink resource scheduling parameters, and service data.
  • Step 311 If there is downlink data to be transmitted, the UE receives the downlink data sent by the eNB after receiving the joint indication information fed back by the eNB.
  • the UE receives the downlink resource scheduling parameter sent by the eNB, when the UE receives the joint indication information fed back by the eNB in the mth subframe, the downlink resource and the transmission determined according to the downlink resource scheduling parameter in the m+k subframe.
  • the UE receives the joint indication information fed back by the eNB in the mth subframe, and detects the PDCCH in the m+k subframe to obtain the location of the downlink resource in the frequency domain dimension and the transmission format of the downlink data, and receives the downlink data sent by the eNB. If the UE receives the new periodic uplink resource scheduling parameter and/or the updated downlink resource scheduling parameter sent by the eNB, the resource determined by the previously received resource scheduling parameter is released in the next cycle, and is determined by using the updated resource scheduling parameter. Resources.
  • the eNB schedules the configured downlink resources to other UEs (mainly other UEs of non-cyclical services) during the current period.
  • Step 312 After receiving the downlink data sent by the eNB, the UE feeds back a downlink retransmission indication to the eNB, so that the eNB determines whether downlink data needs to be retransmitted.
  • Step 313 The eNB receives a downlink retransmission indication fed back by the UE to determine whether downlink data needs to be retransmitted.
  • Step 314 If there is downlink data to be retransmitted, the eNB retransmits the downlink data to the UE.
  • Step 315 If there is downlink data to be retransmitted, the UE receives the downlink data retransmitted by the eNB according to the downlink resource scheduling parameter after feeding back the downlink retransmission indication to the eNB.
  • the actions performed by the UE according to the joint indication information are as shown in Table 1.
  • Table 1 Actions performed by the UE according to the joint indication information Whether the uplink data is heavy or not
  • NACK NO retransmits upstream data (detects PDCCH or
  • NACK YES retransmits upstream data and receives downstream data
  • the UE may also retransmit the data without using the uplink resource and the downlink resource configured by the eNB, but determine the resource and the transmission format by detecting the PDCCH and retransmit the data.
  • the downlink resource scheduling parameter may also include the location of the downlink resource in the time domain dimension, which is the same as the transmission of the uplink data, and may be directly downlinked according to the location in the time domain dimension determined by the downlink resource scheduling parameter. data.
  • the communication method provided by the embodiment of the present invention does not need to detect the PDCCH in each period, but determines the uplink and downlink resources and the transmission format according to the resource scheduling parameters configured by the eNB, and whether there is downlink data.
  • the UE does not need to detect the PDCCH every subframe, but obtains the downlink indication by receiving the ACK/NACK opportunity to determine whether there is downlink data, which reduces the complexity of resource scheduling and makes the UE more power-saving.
  • An embodiment of the present invention further provides an eNB, as shown in FIG. 4, including:
  • the eNB sending unit 11 is configured to send a periodic uplink resource scheduling parameter to the UE, so that the UE uplink resource scheduling parameters include: an uplink resource in a time domain dimension, a frequency domain dimension, and an uplink. Data transmission format;
  • the eNB receiving unit 12 is configured to receive uplink data sent by the UE.
  • the UE sends the periodic uplink resource scheduling parameters to the UE, so that the UE determines the uplink resource and the transmission format for transmitting the uplink data according to the periodic uplink resource scheduling parameter, and does not need to detect the PDCCH, thereby reducing the complexity of resource scheduling and enabling the UE. More energy saving.
  • the embodiment of the present invention further provides another eNB.
  • the eNB includes: an eNB sending unit 11, an eNB receiving unit 12, an eNB feedback unit 13, and a resource determining unit 14.
  • the eNB sending unit 11 is further configured to: before receiving the uplink data sent by the UE, send the downlink resource scheduling parameter to the UE, so that the UE determines the downlink resource and the transmission format for transmitting the downlink data according to the downlink resource scheduling parameter, and the downlink resource scheduling
  • the parameters include: the location of the downlink resource in the frequency domain dimension and the transmission format of the downlink data.
  • the eNB sending unit 11 is specifically configured to: send a periodic uplink resource scheduling parameter to the UE by using the radio resource control RRC signaling; and send a downlink resource scheduling parameter to the UE by using the radio resource control RRC signaling.
  • the eNB feedback unit 13 is configured to: after the eNB receiving unit 12 receives the uplink data sent by the UE, feed the joint indication information to the UE, where the joint indication information includes an uplink retransmission indication and a downlink indication, where the uplink retransmission indication is used to indicate whether there is uplink data. Retransmission is required, and the downlink indication is used to indicate whether downlink data needs to be transmitted.
  • the eNB sending unit 11 is further configured to: if the downlink data needs to be transmitted, send the downlink data to the UE after feeding back the joint indication information to the UE.
  • the downlink data may include one or any combination of the following: updated periodic uplink resource scheduling parameters, updated downlink resource scheduling parameters, and service data.
  • the method further includes a resource determining unit 14 configured to configure, by using radio resource control RRC signaling, a plurality of physical resource block locations for the UE; selecting, according to a random function, the UE in multiple physical resource block locations in each cycle A physical resource block location is used as an uplink resource or a downlink resource; the random function is
  • NpDSCH OCK is the number of physical resource block positions
  • K is the number of subframe identifiers
  • the value is 0.
  • ⁇ is the identity of the UE, ⁇ and D are prime numbers, mod is the operator number of the remainder of the two numbers, and Z is the location of the physical resource block.
  • the eNB provided by the embodiment of the present invention does not need to detect the PDCCH in each period, but determines the uplink resource and the transmission format of the uplink data according to the periodic uplink resource scheduling parameter configured by the eNB.
  • the UE does not need to detect the PDCCH every subframe, but obtains the downlink indication by receiving the ACK/NACK opportunity to determine whether there is downlink data, which reduces the complexity of resource scheduling and makes the UE more power-saving.
  • An embodiment of the present invention further provides a UE, as shown in FIG. 6, including:
  • the UE receiving unit 21 is configured to receive, by using an eNB, a periodic uplink resource scheduling parameter, according to
  • the row resource scheduling parameters include: a location of the uplink resource in the time domain dimension, the frequency domain dimension, and a transmission format of the uplink data;
  • the UE sending unit 22 is configured to send uplink data to the eNB.
  • the transmission format does not need to detect the PDCCH, thereby reducing the complexity of resource scheduling and making the UE more power-saving.
  • the embodiment of the present invention further provides another UE.
  • the UE includes: a UE receiving unit 21, a UE sending unit 22, and a UE feedback unit 23.
  • the UE receiving unit 21 is further configured to: before transmitting the uplink data to the eNB, receive a downlink resource scheduling parameter sent by the eNB, and determine, according to the downlink resource scheduling parameter, the downlink data to be transmitted.
  • the downlink resource scheduling format includes: a location of the downlink resource in the frequency domain dimension and a transmission format of the downlink data.
  • the UE receiving unit 21 is further configured to: after transmitting the uplink data to the eNB, receive the joint indication information that is fed back by the eNB, where the joint indication information includes an uplink retransmission indication and a downlink indication, where the uplink retransmission indication is used to indicate whether there is uplink data. Retransmission is required, and the downlink indication is used to indicate whether downlink data needs to be transmitted.
  • the UE receiving unit 21 is further configured to: after receiving the downlink indication data fed back by the eNB, receive the downlink data sent by the eNB.
  • the downlink data may include one or any combination of the following: updated periodic uplink resource scheduling parameters, updated downlink resource scheduling parameters, and service data.
  • the UE sending unit 22 is further configured to: if the uplink data needs to be retransmitted, after receiving the joint indication information fed back by the eNB, retransmit the location of the uplink resource in the frequency domain dimension and the transmission format according to the uplink resource scheduling parameter. Uplink data to the eNB.
  • the UE feedback unit 23 is configured to: after receiving the downlink data sent by the eNB according to the downlink resource scheduling parameter, feed back a downlink retransmission indication to the eNB, so that the eNB determines whether downlink data needs to be retransmitted;
  • the UE receiving unit 21 is further configured to: if the downlink data needs to be retransmitted, after receiving the downlink retransmission indication to the eNB, receiving the downlink data retransmitted by the eNB according to the downlink resource scheduling parameter.
  • the UE provided by the embodiment of the present invention does not need to detect the PDCCH in each period, but determines the uplink resource and the transmission format of the uplink data according to the periodic uplink resource scheduling parameter configured by the eNB.
  • the UE does not need to detect the PDCCH every subframe, but obtains the downlink indication by receiving the ACK/NACK opportunity to determine whether there is downlink data, which reduces the complexity of resource scheduling and makes the UE more power-saving.
  • the embodiment of the present invention further provides a communication system for periodic services, as shown in FIG. eNB and UE.
  • the specific communication method may be the same as the foregoing embodiment, and details are not described herein again.
  • the communication system provided by the embodiment of the present invention enables the UE to detect the PDCCH in each period, and determines the uplink resource and the transmission format of the uplink data according to the periodic uplink resource scheduling parameters configured by the eNB. Whether there is downlink data, the UE does not need to detect the PDCCH every subframe, but obtains the downlink indication by receiving the ACK/NACK opportunity to determine whether there is downlink data, which reduces the complexity of resource scheduling and makes the UE more power-saving.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, can also be through hardware, but in many cases the former is a better implementation. .
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • a hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

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

Abstract

Dans le domaine technique des télécommunications, l'invention concerne un procédé de communication de service périodique, un nœud ENB et un équipement utilisateur (UE) permettant de réduire la complexité de la planification de ressources et d'effectuer des économies d'énergie. Un procédé de communication de service périodique consiste : à envoyer un paramètre de planification de ressources de liaison montante périodique à un UE de manière à ce que l'UE détermine, en fonction du paramètre de planification de ressources de liaison montante périodique, une ressource de liaison montante et un format de transmission permettant de transmettre des données de liaison montante, le paramètre de planification de ressources de liaison montante périodique comprenant des positions de la ressource de liaison montante dans le domaine temporel et des dimensions dans le domaine fréquentiel et un format de transmission de données de liaison montante ; et à recevoir les données de liaison montante envoyées par l'UE.
PCT/CN2012/083407 2011-11-04 2012-10-24 Procédé de communication de service périodique, nœud enb et équipement utilisateur WO2013064026A1 (fr)

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CN110475327A (zh) * 2018-05-11 2019-11-19 中国移动通信有限公司研究院 一种功率控制的方法、装置、终端及网络设备
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