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WO2015110035A1 - 物理上行链路信道配置方法以及基站和用户设备 - Google Patents

物理上行链路信道配置方法以及基站和用户设备 Download PDF

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Publication number
WO2015110035A1
WO2015110035A1 PCT/CN2015/071305 CN2015071305W WO2015110035A1 WO 2015110035 A1 WO2015110035 A1 WO 2015110035A1 CN 2015071305 W CN2015071305 W CN 2015071305W WO 2015110035 A1 WO2015110035 A1 WO 2015110035A1
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WIPO (PCT)
Prior art keywords
ack
harq
pdcch
epdcch
control channel
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Ceased
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PCT/CN2015/071305
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English (en)
French (fr)
Inventor
沈兴亚
刘仁茂
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Sharp Corp
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Sharp Corp
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Priority to US15/112,732 priority Critical patent/US20160337086A1/en
Publication of WO2015110035A1 publication Critical patent/WO2015110035A1/zh
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Ceased legal-status Critical Current

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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
    • 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
    • H04L1/1806—Go-back-N protocols
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1858—Transmission or retransmission of more than one copy of acknowledgement message
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • 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 the field of wireless communication technologies. More specifically, the present invention relates to a physical uplink channel configuration method and a base station and user equipment.
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • OFDMA orthogonal frequency division multiple access
  • MIMO multiple antenna
  • the Release 10 version of 3GPP has been officially recognized and tested by the International Telecommunication Union as the fourth-generation global mobile communication standard LTE-Advanced.
  • carrier aggregation (CA) and relay technologies are introduced to enhance the uplink/downlink MIMO technology and support the deployment of heterogeneous networks (HetNet).
  • HetNet heterogeneous networks
  • 3GPP decided to introduce low-cost inter-machine communication technology (MTC) in LTE and its upgraded versions to migrate MTC services from current GSM network support.
  • MTC inter-machine communication technology
  • a low-cost MTC UE which supports MTC services in all duplex modes of existing LTE networks, and has such Performance: 1) single receive antenna; 2) downlink and uplink maximum transmission module (TBS) is 1000 bits; 3) downlink data channel baseband bandwidth reduced to 1.4 MHz, downlink control channel bandwidth and network side system The bandwidth is consistent, and the uplink channel bandwidth and the radio frequency portion of the downlink are consistent with the user equipment in the existing LTE network.
  • TBS downlink and uplink maximum transmission module
  • MTC is a data communication service that does not require human involvement.
  • Large-scale deployment of MTC user equipment can be used in security, tracking, billing, measurement, and consumer electronics.
  • Applications include video surveillance, supply chain tracking, smart meters, and remote monitoring.
  • MTC requires lower power consumption, supports lower data transmission rates and lower mobility.
  • Current LTE system The system is mainly for communication services for people (H2H). Therefore, the key to achieving the scale competitive advantage and application prospect of MTC services lies in the fact that LTE networks support low-cost MTC devices to work at low cost.
  • MTC equipment needs to be installed in the basement of a residential building or protected by a thick wall of insulating foil, metal window or traditional building, compared to conventional equipment terminals (such as mobile phones, tablets, etc.) in LTE networks.
  • the interface will obviously suffer from more severe penetration losses.
  • 3GPP decided to study the scheme design and performance evaluation of LTE network to provide additional 20dB coverage enhancement service for MTC equipment. It is worth noting that MTC equipment located in poor network coverage area has such characteristics: very low data transmission rate, very loose delay. Requirements, and limited mobility.
  • the LTE network can further optimize some signaling and/or channels to support the MTC.
  • 3GPP requires certain LTE network coverage enhancements for newly defined low cost UEs and other UEs running MTC services (eg, very relaxed latency requirements), where 15 dB of network coverage is provided for LTE Frequency Division Duplex (FDD) networks Enhanced.
  • FDD Frequency Division Duplex
  • Non-Patent Document RP-140990 New Work Item on Even Lower.
  • Complexity and Enhanced Coverage LTE UE for MTC, Ericsson, NSN the LTERel-13 system needs to support the uplink and downlink 1.4MHz RF bandwidth of the MTC user equipment (hereinafter referred to as narrowband MTC UE) operating at any system bandwidth (eg 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz) , 20MHz, etc.), and provide coverage enhancements for this type of MTC users.
  • narrowband MTC UE MTC user equipment
  • the time of system design low-cost MTC users and coverage-enhanced MTC users should adopt a unified design. Reducing the energy consumption of MTC user equipment is one of the main objectives of this work project.
  • the coverage enhancement design and configuration of the physical layer channel (such as EPDCCH/PDSCH/PUCCH/PUSCH) is a work that needs to be standardized.
  • the discussion of the 3GPP RAN1#74 conference after completing the initial access, any physical channel that needs to be repeatedly transmitted depends on the base station side.
  • the discussion of the 3GPP RAN1 #75 conference pointed out that for the MTC user equipment in the coverage enhancement mode, the ACK/NACK is repeatedly transmitted on the physical layer channel PUCCH; due to the low complexity of the MTC user There is only one antenna, and for energy saving purposes, the transmit power may be reduced.
  • the physical uplink channel of the MTC user needs coverage enhancement, and its ACK/NACK is repeatedly transmitted on the physical layer channel PUCCH.
  • the PUCCH resources occupied by the repeated transmission of ACK/NACK by these MTC users may conflict with the PUCCH resources occupied by ordinary users. How to solve PUCCH resource conflicts and resource use efficiency issues needs to be re-standardized.
  • the EPDCCH/PDSCH/PUCCH/PUSCH requires repeated transmission of multiple subframes, and how to determine the inter-channel timing relationship also needs to be re-standardized.
  • the present invention provides a method for configuring uplink physical control channel resources for user equipment (for example, low-cost user equipment and other user equipments that perform delay tolerant MTC services and require certain network coverage enhancement), And corresponding base stations and user equipment.
  • user equipment for example, low-cost user equipment and other user equipments that perform delay tolerant MTC services and require certain network coverage enhancement
  • a method performed by a base station including: determining whether a hybrid automatic repeat request response HARQ-ACK repeated transmission is enabled; determining a physical downlink control channel PDCCH/expanding physics Whether the downlink control channel EPDCCH or the physical downlink shared channel PDSCH is configured to be repeatedly transmitted; and configuring a physical uplink control channel PUCCH resource for transmitting the HARQ-ACK for the user equipment UE.
  • the index of the control channel element CCE of the physical downlink control channel PDCCH or the index of the control channel element ECCE of the extended physical downlink control channel EPDCCH is configured for the UE.
  • the PUCCH resource for transmitting the HARQ-ACK is configured for the UE through the radio resource control RRC signaling.
  • PUCCH resources for transmitting HARQ-ACK are configured for the UE by radio resource control RRC signaling.
  • a set of PUCCH resources is configured for the UE by radio resource control RRC signaling, and the PDCCH/EPDCCH indicates which of the set of PUCCH resources the UE should transmit the HARQ-ACK.
  • the PUCCH transmission of the UE is set to be performed in the kth subframe after the last transmission of the corresponding PDSCH, the k Is an integer greater than 3.
  • the value of the k is determined by any of the following methods: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • the manner of HARQ-ACK repeated transmission of the UE is configured by RRC signaling or corresponding PDCCH control information.
  • the manner in which the UE's HARQ-ACK repeat transmission includes the manner of PUCCH format 3.
  • a method performed by a base station comprising: determining whether a physical downlink control channel PDCCH/extended physical downlink control channel EPDCCH or a physical downlink shared channel PDSCH is configured to be repeated Transmitting; and configuring a physical uplink control channel PUCCH resource for transmitting the HARQ-ACK for the user equipment UE.
  • the PUCCH resource for transmitting the HARQ-ACK is configured for the UE through the radio resource control RRC signaling.
  • a set of PUCCH resources is configured for the UE by radio resource control RRC signaling, and the PDCCH/EPDCCH indicates which of the set of PUCCH resources the UE should transmit the HARQ-ACK.
  • the PUCCH transmission of the UE is set to be performed in the kth subframe after the last transmission of the corresponding PDSCH, the k Is an integer greater than 3.
  • the value of the k is determined by any of the following methods: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • the manner of HARQ-ACK repeated transmission of the UE is configured by RRC signaling or corresponding PDCCH control information.
  • the manner in which the UE's HARQ-ACK repeat transmission includes the manner of PUCCH format 3.
  • a method performed by a user equipment UE comprising: determining whether a repeated transmission of a hybrid automatic repeat request acknowledgment HARQ-ACK is enabled; determining a physical downlink control channel PDCCH/expanding physics Whether the downlink control channel EPDCCH or the physical downlink shared channel PDSCH is configured to be repeatedly transmitted; and transmitting the HARQ-ACK using the physical uplink control channel PUCCH resource allocated by the base station.
  • the index for the control channel element CCE of the physical downlink control channel PDCCH or the index of the control channel element ECCE of the extended physical downlink control channel EPDCCH is obtained for transmitting the HARQ.
  • the PUCCH resource for transmitting the HARQ-ACK is obtained by the radio resource control RRC signaling.
  • PUCCH resources for transmitting HARQ-ACK are obtained by radio resource control RRC signaling.
  • the PUCCH transmission of the UE is performed in the kth subframe after the last reception of the corresponding PDSCH, the k being greater than 3 The integer.
  • the value of the k is determined by any of the following methods: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • the HARQ-ACK is transmitted using HARQ-ACK repeated transmission of the UE configured by RRC signaling or corresponding PDCCH control information.
  • a method performed by a user equipment UE comprising: determining whether a physical downlink control channel PDCCH/extended physical downlink control channel EPDCCH or a physical downlink shared channel PDSCH is configured For repeated transmissions; and using the physical uplink control channel PUCCH resources allocated by the base station to transmit HARQ-ACK.
  • an index of a control channel element CCE of a physical downlink control channel PDCCH or an index of a control channel element ECCE of an extended physical downlink control channel EPDCCH to obtain PUCCH resources for transmitting HARQ-ACK;
  • the PUCCH resource for transmitting the HARQ-ACK is obtained by the radio resource control RRC signaling.
  • the PUCCH transmission of the UE is performed in the kth subframe after the last reception of the corresponding PDSCH, the k being greater than 3 The integer.
  • the value of the k is determined by any of the following methods: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • the HARQ-ACK is transmitted using HARQ-ACK repeated transmission of the UE configured by RRC signaling or corresponding PDCCH control information.
  • a base station comprising: a determining unit configured to determine whether a repeated transmission of a hybrid automatic repeat request acknowledgment HARQ-ACK is enabled, and determining a physical downlink control channel PDCCH/extension Whether the physical downlink control channel EPDCCH or the physical downlink shared channel PDSCH is configured to be repeatedly transmitted; and a configuration unit, It is configured to configure a physical uplink control channel PUCCH resource for transmitting a HARQ-ACK for the user equipment UE.
  • the configuration unit is configured to: control channel elements of the PDCCH through the physical downlink control channel when neither PDCCH/EPDCCH nor PDSCH is configured for repeated transmission
  • the index of the CCE or the index of the control channel element ECCE of the extended physical downlink control channel EPDCCH is a PUCCH resource configured for the UE to transmit HARQ-ACK; and is controlled by radio resources when the PDCCH/EPDCCH or PDSCH is configured for repeated transmission
  • the RRC signaling configures the PUCCH resource for transmitting the HARQ-ACK for the UE.
  • the configuration unit is configured to configure the UE for transmitting HARQ by radio resource control RRC signaling when repeated transmission of the HARQ-ACK is not enabled and the PDCCH/EPDCCH or PDSCH is configured for repeated transmission.
  • PUCCH resource of ACK is configured to configure the UE for transmitting HARQ by radio resource control RRC signaling when repeated transmission of the HARQ-ACK is not enabled and the PDCCH/EPDCCH or PDSCH is configured for repeated transmission.
  • the configuration unit is configured to configure a set of PUCCH resources for the UE by radio resource control RRC signaling, and indicate which of the set of PUCCH resources the UE should transmit the HARQ-ACK through the PDCCH/EPDCCH.
  • the configuration unit is configured to set the PUCCH transmission of the UE to the kth subframe after the last transmission of the corresponding PDSCH if the UE is in coverage enhancement mode or the PDSCH of the UE is configured for repeated transmission In progress, the k is an integer greater than 3.
  • the value of the k is determined by any of the following methods: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • the configuration unit is configured to configure a manner of HARQ-ACK repeated transmission of the UE by RRC signaling or corresponding PDCCH control information if the UE is in coverage enhancement mode or the PUCCH transmission of the UE requires enhancement.
  • the manner in which the UE's HARQ-ACK repeat transmission includes the manner of PUCCH format 3.
  • a base station comprising: a determining unit configured to determine a physical downlink control channel PDCCH/extended physical downlink control channel Whether the EPDCCH or the physical downlink shared channel PDSCH is configured to be repeatedly transmitted; and a configuration unit configured to configure a physical uplink control channel PUCCH resource for transmitting the HARQ-ACK for the user equipment UE.
  • the configuration unit is configured to: index or extend the physical downlink control channel of the control channel element CCE of the physical downlink control channel PDCCH when neither PDCCH/EPDCCH nor PDSCH is configured for repeated transmission
  • the index of the control channel element ECCE of the EPDCCH is a PUCCH resource configured for the UE to transmit the HARQ-ACK; and when the PDCCH/EPDCCH or the PDSCH is configured to be repeatedly transmitted, the UE is configured to transmit the HARQ by the radio resource control RRC signaling.
  • PUCCH resource of ACK is configured to: index or extend the physical downlink control channel of the control channel element CCE of the physical downlink control channel PDCCH when neither PDCCH/EPDCCH nor PDSCH is configured for repeated transmission
  • the index of the control channel element ECCE of the EPDCCH is a PUCCH resource configured for the UE to transmit the HARQ-ACK; and when the PDCCH/EPDCCH or the PDSCH is configured to be repeatedly transmitted, the UE is configured
  • the configuration unit is configured to configure a set of PUCCH resources for the UE by radio resource control RRC signaling, and indicate which of the set of PUCCH resources the UE should transmit the HARQ-ACK through the PDCCH/EPDCCH.
  • the configuration unit is configured to set the PUCCH transmission of the UE to the kth subframe after the last transmission of the corresponding PDSCH if the UE is in coverage enhancement mode or the PDSCH of the UE is configured for repeated transmission In progress, the k is an integer greater than 3.
  • the value of the k is determined by any of the following methods: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • the configuration unit is configured to configure a manner of HARQ-ACK repeated transmission of the UE by RRC signaling or corresponding PDCCH control information if the UE is in coverage enhancement mode or the PUCCH transmission of the UE requires enhancement.
  • the manner in which the UE's HARQ-ACK repeat transmission includes the manner of PUCCH format 3.
  • a user equipment comprising: a determining unit configured to determine whether a repeated transmission of a hybrid automatic repeat request response HARQ-ACK is enabled, and determining a physical downlink control channel PDCCH/ Whether the extended physical downlink control channel EPDCCH or the physical downlink shared channel PDSCH is configured to be repeatedly transmitted;
  • the transmission unit is configured to transmit the HARQ-ACK using the physical uplink control channel PUCCH resource allocated by the base station.
  • the transmission unit is configured to: control channel elements of the PDCCH through the physical downlink control channel when neither PDCCH/EPDCCH nor PDSCH is configured for repeated transmission Indexing of the CCE or indexing the control channel element ECCE of the physical downlink control channel EPDCCH to obtain a PUCCH resource for transmitting HARQ-ACK; and controlling RRC by radio resource when the PDCCH/EPDCCH or PDSCH is configured for repeated transmission Signaling to obtain PUCCH resources for transmitting HARQ-ACK.
  • the transmission unit is configured to obtain HARQ-ACK for transmission by radio resource control RRC signaling when repeated transmission of HARQ-ACK is not enabled and PDCCH/EPDCCH or PDSCH is configured for repeated transmission PUCCH resources.
  • the transmission unit is configured to: if the UE is in coverage enhancement mode or the PDSCH of the UE is configured for repeated transmission, the PUCCH transmission of the UE is performed in the kth subframe after the last reception of the corresponding PDSCH,
  • the k is an integer greater than 3.
  • the value of the k is determined by any of the following methods: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • the HARQ-ACK is transmitted using HARQ-ACK repeated transmission of the UE configured by RRC signaling or corresponding PDCCH control information.
  • a user equipment comprising: a determining unit configured to determine whether a physical downlink control channel PDCCH/extended physical downlink control channel EPDCCH or a physical downlink shared channel PDSCH is Configured as a repeat transmission; and a transmission unit configured to transmit the HARQ-ACK using the physical uplink control channel PUCCH resource allocated by the base station.
  • the transmission unit is configured to: index or extend the physical downlink control channel of the control channel element CCE of the physical downlink control channel PDCCH when neither PDCCH/EPDCCH nor PDSCH is configured for repeated transmission Control channel element of EPDCCH An index of the ECCE to obtain a PUCCH resource for transmitting the HARQ-ACK; and when the PDCCH/EPDCCH or the PDSCH is configured to be repeatedly transmitted, the PUCCH resource for transmitting the HARQ-ACK is obtained by the radio resource control RRC signaling.
  • the transmission unit is configured to: if the UE is in coverage enhancement mode or the PDSCH of the UE is configured for repeated transmission, the PUCCH transmission of the UE is performed in the kth subframe after the last reception of the corresponding PDSCH,
  • the k is an integer greater than 3.
  • the value of the k is determined by any of the following methods: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • the HARQ-ACK is transmitted using HARQ-ACK repeated transmission of the UE configured by RRC signaling or corresponding PDCCH control information.
  • the resource utilization of the LTE supporting MTC user equipment can be improved, the spectrum/energy efficiency can be improved, and the time/frequency resource conflict between the cells can be reduced.
  • FIG. 1 shows a flow chart of a method performed by a base station in accordance with an embodiment of the present invention
  • FIG. 2 is a diagram showing the timing relationship of a PUCCH channel and a corresponding PDSCH channel according to the present invention
  • Figure 3 illustrates the manner in which the encoded ACK/NACK bits are processed to the physical layer
  • FIG. 4 shows a flow chart of a method performed by a user equipment in accordance with an embodiment of the present invention
  • Figure 5 shows a block diagram of a base station in accordance with an embodiment of the present invention
  • Figure 6 shows a block diagram of a user equipment in accordance with an embodiment of the present invention
  • FIG. 7 shows a flow chart of another method performed by a base station in accordance with an embodiment of the present invention.
  • FIG. 8 shows a flow chart of another method performed by a user equipment in accordance with an embodiment of the present invention.
  • the present invention proposes (requires additional coverage enhancement or no additional coverage enhancement) low-cost MTC user equipment and other MTC services supporting delay tolerance and requiring certain coverage of enhanced user equipment.
  • the PDCCH information transmission/reception method, the base station, and the user equipment (UE) are described in detail. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, detailed descriptions of well-known techniques that are not directly related to the present invention are omitted for the sake of brevity to prevent confusion of the understanding of the present invention.
  • FIG. 1 shows a flow chart of a method performed by a base station in accordance with an embodiment of the present invention. As shown in FIG. 1, method 10 begins at step S110.
  • step S120 it is determined whether the repeated transmission of the hybrid automatic repeat request response HARQ-ACK is enabled.
  • repeated transmission of HARQ-ACK may depend on the upper layer enabling or disabling the user specific parameter ackNackRepetition. If the HARQ-ACK repeated transmission is enabled, the MTC user equipment repeatedly transmits the N ANRep secondary HARQ-ACK, wherein the repetition parameter N ANRep is configured by the upper layer.
  • step S130 it is determined (expanded) whether the physical downlink control channel (E) PDCCH or the physical downlink shared channel PDSCH is configured to be repeatedly transmitted.
  • E physical downlink control channel
  • PDSCH physical downlink shared channel
  • a physical uplink control channel PUCCH resource for transmitting a HARQ-ACK is configured for the user equipment UE.
  • the index or extended physics of the control channel element CCE through the physical downlink control channel PDCCH when neither PDCCH/EPDCCH nor PDSCH is configured for repeated transmission is a PUCCH resource configured by the UE for transmitting HARQ-ACK.
  • the user equipment first implicitly passes the corresponding PDCCH CCE index or the EPDCCH ECCE index.
  • the HARQ-ACK feedback is transmitted once on the PUCCH resource obtained by the method. Then, the PUCCH resources configured at the upper layer The N ANRep -1 HARQ-ACK feedback is repeatedly transmitted.
  • the PUCCH resource for transmitting the HARQ-ACK is configured for the UE through the radio resource control RRC signaling.
  • the PUCCH/EPDCCH or one PDSCH indicated by the PDCCH/EPDCCH or the PDCCH/EPDCCH indicates that the PDSCH related to the downlink SPS release is configured as a repetitive transmission
  • the PUCCH resource configured by the user equipment in the upper layer/RRC signaling is configured.
  • the N ANRep secondary HARQ-ACK feedback is continuously transmitted.
  • the corresponding high layer configuration/RRC signaling can be placed in IE PUCCH-ConfigDedicated as follows:
  • the repeated transmission parameter repetitionFactor indicates that N ANRep should be extended from the current ⁇ n2, n4, n6, spare1 ⁇ to ⁇ n2, n4, n6, n8, ... ⁇ .
  • Parameter n1PUCCH-AN-Rep indication indicates that N ANRep should be extended from the current ⁇ n2, n4, n6, spare1 ⁇ to ⁇ n2, n4, n6, n8, ... ⁇ .
  • PUCCH resources for transmitting HARQ-ACK are configured for the UE by radio resource control RRC signaling. For example, if HARQ-ACK repeated transmission is not enabled, the user equipment transmits HARQ-ACK feedback only once for each received PDSCH.
  • the PDCCH/EPDCCH or a PDSCH indicated by the PDCCH/EPDCCH or the PDCCH/EPDCCH indicates that the PDSCH related to the downlink SPS release is configured to be repeatedly transmitted
  • the PUCCH resource configured by the user equipment in the upper layer/RRC signaling is configured.
  • the HARQ-ACK feedback is transmitted once. Its corresponding high-level configuration/RRC signaling can be placed in IE PUCCH-ConfigDedicated:
  • n1PUCCH-AN-r12 indicates
  • the MTC service is used for the user equipment, and if the PDSCH transmission of the user equipment is performed in the kth subframe after the last transmission of the corresponding PDCCH, where k is an integer greater than zero, then the radio resource is controlled.
  • the RRC signaling configures the PUCCH resource for transmitting the HARQ-ACK for the UE. For example, the PDSCH transmission of the user equipment is performed in the kth subframe after the last transmission of the corresponding PDCCH, and when the k is an integer greater than zero, the PUCCH resource configured by the user equipment in the upper layer/RRC signaling is performed.
  • the N ANRep secondary HARQ-ACK feedback is continuously transmitted.
  • a set of PUCCH resources is configured for the UE by radio resource control RRC signaling, and the PDCCH/EPDCCH indicates which of the set of PUCCH resources the UE should transmit the HARQ-ACK.
  • the PUCCH resource can be explicitly communicated to the user equipment.
  • a group of PUCCH resources can be The user equipment is semi-statically configured by the high layer/RRC signaling, and then the user equipment is used to dynamically indicate that the user equipment uses one of the resources of the group by using control information in the corresponding PDCCH/EPDCCH.
  • the user equipment is in the obtained PUCCH resource.
  • the HARQ-ACK feedback is transmitted once. A specific example is given below.
  • the control information for dynamically indicating the PUCCH resource in the PDCCH/EPDCCH may be located in the TPC domain in the DCI format, and the mapping manner thereof is shown in Table 1 below. Out.
  • the corresponding high layer configuration/RRC signaling can be placed in IE PUCCH-ConfigDedicated:
  • the control information for dynamically indicating the PUCCH resource in the PDCCH/EPDCCH may be located in the TPC field in the DCI format, and the mapping manner thereof is shown in Table 1 above. Out.
  • the corresponding high layer configuration/RRC signaling can be placed in IE PUCCH-ConfigDedicated:
  • the PUCCH transmission of the UE is set to be performed in the kth subframe after the last transmission of the corresponding PDSCH, the k Is an integer greater than 3.
  • the value of the k is determined by any one of the following: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • FIG. 2 is a diagram showing the timing relationship of a PUCCH channel and a corresponding PDSCH channel according to the present invention.
  • the PUCCH starts transmission at the n+kth subframe, where k is an integer greater than 3.
  • the user equipment may be known in advance by: predetermining; semi-static configuration by higher layer/RRC signaling; or dynamically indicating by control information in the PDCCH/EPDCCH.
  • the manner of HARQ-ACK repeated transmission of the UE is configured by RRC signaling or corresponding (E)PDCCH control information.
  • the manner in which the HARQ-ACK of the UE is repeatedly transmitted includes the manner of the PUCCH format 3.
  • the user equipment may transmit HARQ-ACK feedback using the PUCCH format 3 format.
  • the HARQ-ACK bit operates as described in TS 36.2125.2.3.1, and finally in Figure 3
  • the mode is mapped to the physical layer. Specifically, as shown in FIG. 3, an ACK/NACK bit and a scheduling request bit (if any) are concatenated into a series of bit sequences. The sequence is block-coded into a 48-bit channel code, and then scrambled, QPSK-modulated to form 24 modulation symbols. The 24 modulation symbols are divided into two groups, each group of 12 modulation symbols respectively corresponding to one time slot.
  • the 12 modulation symbols of the group are cyclically shifted and sent to the DFT module, and then mapped to physical resources after IFFT.
  • 12 modulation symbols are multiplied by an orthogonal sequence of length 5, so that a pair of physical resource blocks can support up to 5 users at the same time.
  • the PUCCH resource configuration method in this embodiment allows the network side (base station) to explicitly configure the PUCCH resources of the user equipment and the corresponding PUCCH and PUSCH timing relationships.
  • the resource utilization of the LTE supporting MTC user equipment can be improved, the spectrum/energy efficiency can be improved, and the time/frequency resource conflict between the cells can be reduced.
  • the uplink physical channel needs coverage enhancement. Therefore, in some scenarios, the physical uplink channel of the MTC user equipment is forced to be enhanced.
  • FIG. 7 shows a flow chart of another method performed by a base station in accordance with an embodiment of the present invention. As shown in FIG. 7, method 70 begins at step S710.
  • step S720 it is determined whether the extended physical downlink control channel EPDCCH and/or the physical downlink control channel or the physical downlink shared channel PDSCH are configured for repeated transmission.
  • a physical uplink control channel PUCCH resource for transmitting a HARQ-ACK is configured for the user equipment UE.
  • the index of the control channel element CCE through the physical downlink control channel PDCCH or the control channel element ECCE of the extended physical downlink control channel EPDCCH configures the UE to allocate PUCCH resources for HARQ-ACK.
  • the user equipment first implicitly passes the corresponding PDCCH CCE index or the EPDCCH ECCE index.
  • the HARQ-ACK feedback is transmitted once on the PUCCH resource obtained by the method. Then, the PUCCH resources configured at the upper layer The N ANRep -1 HARQ-ACK feedback is repeatedly transmitted.
  • the PUCCH resource for transmitting the HARQ-ACK is configured for the UE through the radio resource control RRC signaling.
  • the PUCCH/EPDCCH or one PDSCH indicated by the PDCCH/EPDCCH or the PDCCH/EPDCCH indicates that the PDSCH related to the downlink SPS release is configured as a repetitive transmission
  • the PUCCH resource configured by the user equipment in the upper layer/RRC signaling is configured.
  • the N ANRep secondary HARQ-ACK feedback is continuously transmitted.
  • the corresponding high layer configuration/RRC signaling can be placed in IE PUCCH-ConfigDedicated as follows:
  • the repeated transmission parameter repetitionFactor indicates that N ANRep should be extended from the current ⁇ n2, n4, n6, spare1 ⁇ to ⁇ n2, n4, n6, n8, ... ⁇ .
  • Parameter n1PUCCH-AN-Rep indication indicates that N ANRep should be extended from the current ⁇ n2, n4, n6, spare1 ⁇ to ⁇ n2, n4, n6, n8, ... ⁇ .
  • the MTC service is used for the user equipment, and if the PDSCH transmission of the user equipment is performed in the kth subframe after the last transmission of the corresponding PDCCH, where k is an integer greater than zero, then the radio resource is controlled.
  • the RRC signaling configures the PUCCH resource for transmitting the HARQ-ACK for the UE. For example, the PDSCH transmission of the user equipment is performed in the kth subframe after the last transmission of the corresponding PDCCH, and when the k is an integer greater than zero, the PUCCH resource configured by the user equipment in the upper layer/RRC signaling is performed.
  • the N ANRep secondary HARQ-ACK feedback is continuously transmitted.
  • a set of PUCCH resources is configured for the UE by radio resource control RRC signaling, and the PDCCH/EPDCCH indicates which of the set of PUCCH resources the UE should transmit the HARQ-ACK.
  • the PUCCH resource can be explicitly communicated to the user equipment.
  • a group of PUCCH resources can be The user equipment is semi-statically configured by the high layer/RRC signaling, and then the user equipment is used to dynamically indicate that the user equipment uses one of the resources of the group by using control information in the corresponding PDCCH/EPDCCH.
  • the control information for dynamically indicating the PUCCH resource in the PDCCH/EPDCCH may be located in the TPC field in the DCIformat, and the mapping manner thereof is shown in Table 1 above. .
  • the corresponding high layer configuration/RRC signaling can be placed in IE PUCCH-ConfigDedicated:
  • the PUCCH transmission of the UE is set to be performed in the kth subframe after the last transmission of the corresponding PDSCH, the k Is an integer greater than 3.
  • the value of the k is determined by any one of the following: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • FIG. 2 there is shown a schematic diagram of the timing relationship of a PUCCH channel and a corresponding PDSCH channel in accordance with the present invention.
  • the PUCCH starts transmission at the n+kth subframe, where k is an integer greater than 3.
  • the user equipment may be known in advance by: predetermining; semi-static configuration by higher layer/RRC signaling; or dynamically indicating by control information in the PDCCH/EPDCCH.
  • the manner of HARQ-ACK repeated transmission of the UE is configured by RRC signaling or corresponding (E)PDCCH control information.
  • the manner in which the HARQ-ACK of the UE is repeatedly transmitted includes the manner of the PUCCH format 3.
  • the user equipment may transmit HARQ-ACK feedback using the PUCCH format 3 format.
  • the HARQ-ACK bit operates in the manner described in TS 36.212 5.2.3.1 and is finally mapped to the physical layer in the manner shown in Figure 3.
  • an ACK/NACK bit and a scheduling request bit are concatenated into a series of bit sequences.
  • the sequence uses block coding to become a 48-bit channel coding, followed by scrambling, QPSK modulation to form 24 modulation symbols, which The 24 modulation symbols are divided into two groups, and each group of 12 modulation symbols respectively corresponds to one time slot.
  • the 12 modulation symbols of the group are cyclically shifted and sent to the DFT module, and then mapped to physical resources after IFFT.
  • 12 modulation symbols are multiplied by an orthogonal sequence of length 5, so that a pair of physical resource blocks can support up to 5 users at the same time.
  • method 70 ends at step S740.
  • method 40 begins at step S400.
  • step S410 it is determined whether the repeated transmission of the hybrid automatic repeat request acknowledgment HARQ-ACK is enabled, and whether the physical downlink control channel PDCCH/extended physical downlink control channel EPDCCH or the physical downlink shared channel PDSCH is determined Configured for repeated transfers.
  • the HARQ-ACK is transmitted using the physical uplink control channel PUCCH resource allocated by the base station.
  • the control channel element CCE/ECCE of the physical downlink control channel PDCCH/EPDCCH is adopted when neither PDCCH/EPDCCH nor PDSCH is configured for repeated transmission Indexing to obtain a PUCCH resource for transmitting a first HARQ-ACK, obtaining PUCCH resources for transmitting remaining N ANRep -1 HARQ-ACK by radio resource control RRC signaling; and when PDCCH/EPDCCH or PDSCH is configured For repeated transmission, PUCCH resources for transmitting HARQ-ACK are obtained by radio resource control RRC signaling.
  • PUCCH resources for transmitting HARQ-ACK are obtained by radio resource control RRC signaling.
  • the PUCCH transmission of the UE is performed in the kth subframe after the last reception of the corresponding PDSCH, the k being greater than 3 The integer.
  • the value of the k is determined by any one of the following: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH.
  • the HARQ-ACK is transmitted using the HARQ-ACK repeated transmission of the UE configured by the RRC signaling or the corresponding PDCCH/EPDCCH control information.
  • the manner in which the UE's HARQ-ACK repeat transmission may include the manner of PUCCH format 3.
  • method 40 ends at step S430.
  • FIG. 8 shows a flow chart of another method performed by a user equipment in accordance with an embodiment of the present invention. As shown in Figure 8, method 80 begins at step S800.
  • step S810 it is determined whether the physical downlink control channel PDCCH/extended physical downlink control channel EPDCCH or the physical downlink shared channel PDSCH is configured to be repeatedly transmitted.
  • the HARQ-ACK is transmitted using the physical uplink control channel PUCCH resource allocated by the base station.
  • the first HARQ is transmitted through the index of the control channel element CCE/ECCE of the physical downlink control channel PDCCH/EPDCCH.
  • a PUCCH resource of the ACK obtaining a PUCCH resource for transmitting the remaining N ANRep -1 HARQ-ACK by radio resource control RRC signaling; and controlling the RRC signal by the radio resource when the PDCCH/EPDCCH or the PDSCH is configured to be repeatedly transmitted Let us obtain the PUCCH resource for transmitting the HARQ-ACK.
  • the PUCCH resource for transmitting the HARQ-ACK is obtained by radio resource control RRC signaling.
  • the PUCCH transmission of the UE is performed in the kth subframe after the last reception of the corresponding PDSCH, the k being greater than 3 The integer.
  • the value of the k is determined by any one of the following: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH.
  • the HARQ-ACK is transmitted using the HARQ-ACK repeated transmission of the UE configured by the RRC signaling or the corresponding PDCCH/EPDCCH control information.
  • the manner in which the UE's HARQ-ACK repeat transmission may include the manner of PUCCH format 3.
  • method 80 ends at step S830.
  • FIG. 5 shows a block diagram of a base station in accordance with an embodiment of the present invention.
  • the base station 50 includes a determining unit 510 and a configuration unit 520.
  • the determining unit 510 is configured to determine a repetition of the hybrid automatic repeat request response HARQ-ACK Whether the transmission is enabled, and whether the physical downlink control channel PDCCH/extended physical downlink control channel EPDCCH or the physical downlink shared channel PDSCH is configured to be repeatedly transmitted.
  • the determining unit 510 is configured to determine whether the physical downlink control channel PDCCH/extended physical downlink control channel EPDCCH or the physical downlink shared channel PDSCH is configured to be repeatedly transmitted.
  • the configuration unit 520 is configured to configure a physical uplink control channel PUCCH resource for transmitting the HARQ-ACK for the user equipment UE.
  • the configuration unit 520 is configured to: control channel through the physical downlink control channel PDCCH when neither PDCCH/EPDCCH nor PDSCH is configured for repeated transmission.
  • the index of the element CCE or the index of the control channel element ECCE of the extended physical downlink control channel EPDCCH is a PUCCH resource configured for the UE to transmit HARQ-ACK; and when the PDCCH/EPDCCH or PDSCH is configured for repeated transmission, through the radio resource
  • the control RRC signaling configures a PUCCH resource for transmitting a HARQ-ACK for the UE.
  • repeated transmission of HARQ-ACK is forced to enable, requiring no high layer signaling configuration.
  • the configuration unit 520 is configured to: when the PDCCH/EPDCCH and the PDSCH are not configured to be repeatedly transmitted, the index of the control channel element CCE of the physical downlink control channel PDCCH or the control channel of the extended physical downlink control channel EPDCCH
  • An index of an element ECCE configures a PUCCH resource for transmitting a HARQ-ACK for a UE; and configures a PUCCH resource for transmitting a HARQ-ACK for a UE by radio resource control RRC signaling when the PDCCH/EPDCCH or the PDSCH is configured to be repeatedly transmitted.
  • the configuration unit 520 is configured to configure the UE for transmitting HARQ by radio resource control RRC signaling when repeated transmission of the HARQ-ACK is not enabled and the PDCCH/EPDCCH or PDSCH is configured for repeated transmission. - PUCCH resource of ACK.
  • the configuration unit 520 is configured to: use the MTC service for the user equipment, if the PDSCH transmission of the user equipment is performed in the kth subframe after the last transmission of the corresponding PDCCH, the k is greater than zero Integer, the UE is configured with PUCCH resources for transmitting HARQ-ACK through radio resource control RRC signaling. For example, the PDSCH transmission of the user equipment is performed in the kth subframe after the last transmission of the corresponding PDCCH, and when the k is an integer greater than zero, the PUCCH resource configured by the user equipment in the upper layer/RRC signaling is performed. The N ANRep secondary HARQ-ACK feedback is continuously transmitted.
  • the configuration unit 520 is configured to: configure a group of PUCCH resources for the UE by radio resource control RRC signaling, and indicate, on the PDCCH/EPDCCH, which of the set of PUCCH resources the UE should transmit the HARQ-ACK. .
  • the configuration unit 520 is configured to set the PUCCH transmission of the UE to the kth sub-after the last transmission of the corresponding PDSCH if the UE is in the coverage enhancement mode or the PDSCH of the UE is configured for repeated transmission.
  • the k is an integer greater than 3.
  • the value of the k is determined by any one of the following: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH/EPDCCH.
  • the configuration unit 520 is configured to configure the HARQ-ACK repeated transmission of the UE by RRC signaling or corresponding (E)PDCCH control information if the UE is in the coverage enhancement mode or the PUCCH transmission of the UE needs to be enhanced.
  • the manner in which the HARQ-ACK of the UE is repeatedly transmitted includes the manner of the PUCCH format 3.
  • Figure 6 shows a block diagram of a user equipment in accordance with an embodiment of the present invention.
  • the user equipment 60 includes a determining unit 610 and a transmitting unit 620.
  • the determining unit 610 is configured to determine whether the repeated transmission of the hybrid automatic repeat request acknowledgment HARQ-ACK is enabled, and determine the physical downlink control channel PDCCH/extended physical downlink control channel (E) PDCCH or physical downlink sharing Whether the channel PDSCH is configured for repeated transmission.
  • PDCCH/extended physical downlink control channel (E) PDCCH or physical downlink sharing Whether the channel PDSCH is configured for repeated transmission.
  • the determining unit 610 is configured to determine whether the physical downlink control channel PDCCH/extended physical downlink control channel (E) PDCCH or the physical downlink shared channel PDSCH is configured to be repeatedly transmitted.
  • E extended physical downlink control channel
  • the transmission unit 620 is configured to transmit the HARQ-ACK using the physical uplink control channel PUCCH resource allocated by the base station.
  • the transmission unit 620 is configured to: control channel through the physical downlink control channel PDCCH when neither PDCCH/EPDCCH nor PDSCH is configured for repeated transmission An index of the information element CCE or an index of the control channel element ECCE of the extended physical downlink control channel EPDCCH to obtain a PUCCH resource for transmitting the first HARQ-ACK, obtained by the radio resource control RRC signaling for transmitting the remaining N ANRep - PUCCH resource of 1 HARQ-ACK; and when the PDCCH/EPDCCH or PDSCH is configured to be repeatedly transmitted, the PUCCH resource for transmitting the HARQ-ACK is obtained by radio resource control RRC signaling.
  • the repeated transmission of HARQ-ACK is forcibly enabled, and the transmission unit 620 is configured to: control channel information elements of the PDCCH through the physical downlink control channel when neither PDCCH/EPDCCH nor PDSCH is configured for repeated transmission
  • the index of the CCE or the index of the control channel element ECCE of the physical downlink control channel EPDCCH is extended to obtain a PUCCH resource for transmitting the first HARQ-ACK, and the remaining N ANRep is obtained by using the radio resource control RRC signaling.
  • a PUCCH resource of one HARQ-ACK; and a PUCCH resource for transmitting a HARQ-ACK is obtained by radio resource control RRC signaling when the PDCCH/EPDCCH or the PDSCH is configured to be repeatedly transmitted.
  • the transmission unit 620 is configured to obtain HARQ for transmission by radio resource control RRC signaling when repeated transmission of HARQ-ACK is not enabled and the PDCCH/EPDCCH or PDSCH is configured for repeated transmission. PUCCH resource of ACK.
  • the transmitting unit 620 is configured to: if the UE is in the coverage enhancement mode or the PDSCH of the UE is configured for repeated transmission, the PUCCH transmission of the UE is performed in the kth subframe after the last reception of the corresponding PDSCH , k is an integer greater than 3.
  • the value of the k is determined by any one of the following: predetermined, semi-statically configured by RRC signaling, or dynamically determined by control information in the PDCCH.
  • the transmission unit 620 transmits the HARQ using the HARQ-ACK repeated transmission of the UE configured by the RRC signaling or the corresponding PDCCH control information. -ACK.
  • the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware.
  • the base station and various components within the user equipment in the above embodiments may be implemented by various devices including, but not limited to, analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, and programmable processing. , Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (CPLDs), and more.
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • CPLDs Programmable Logic Devices
  • base station refers to a mobile communication data and control switching center having a large transmission power and a relatively large coverage area, including resource allocation scheduling, data reception and transmission, and the like.
  • User equipment refers to a user mobile terminal, for example, a terminal device including a mobile phone, a notebook, etc., which can perform wireless communication with a base station or a micro base station.
  • embodiments of the invention disclosed herein may be implemented on a computer program product.
  • the computer program product is a product having a computer readable medium encoded with computer program logic that, when executed on a computing device, provides related operations to implement The above technical solution of the present invention.
  • the computer program logic When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention.
  • Such an arrangement of the present invention is typically provided as software, code and/or other data structures, or such as one or more, that are arranged or encoded on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy disk, or hard disk.
  • Software or firmware or such a configuration may be installed on the computing device such that one or more processors in the computing device perform the technical solutions described in the embodiments of the present invention.

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Abstract

本发明提供了一种由基站执行的方法，包括：确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用；确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。本发明还提供了一种由用户设备执行的方法以及相应的基站和用户设备。采用本发明，能够提高LTE支持MTC用户设备的资源利用率并改善频谱/能量效率，减少小区间的时间/频率资源冲突。

Description

物理上行链路信道配置方法以及基站和用户设备 技术领域
本发明涉及无线通信技术领域。更具体地，本发明涉及一种物理上行链路信道配置方法以及基站和用户设备。
背景技术
第三代移动通信合作计划组织(3GPP)部署的长期演进项目(LTE)旨在提供日益多样化的未来移动通信服务，无线蜂窝通信日益成为大众生活和工作中不可或缺的一部分。在3GPP LTE的第一版(即Release 8)中，引入了正交频分多址(OFDMA)和多天线(MIMO)技术。3GPP的Release 10版本经国际电信联盟的评估和测试，正式成为了第四代全球移动通信标准LTE-Advanced。在LTE-Advanced标准中，引入了载波聚合(CA)和中继技术，增强了上行/下行MIMO技术，同时支持异构网络(HetNet)的布署。
为了满足未来家庭设备通信的市场需求和规模庞大的物联网(IOT)部署，3GPP决定在LTE及其升级版本中引入低成本机器间通信技术(MTC)，将MTC服务由目前的GSM网络支持迁移至LTE网络支持，并定义一种新的用户设备类型，称之为低成本(Low-cost)MTC UE，该用户设备在现有LTE网络的所有双工模式中支持MTC服务，并具有这样的性能：1)单接收天线；2)下行和上行最大的传输模块(TBS)为1000比特；3)下行链路数据信道的基带带宽降低为1.4MHz，下行链路控制信道的带宽与网络侧系统带宽保持一致，上行链路信道带宽以及下行链路的射频部分与现有LTE网络中的用户设备保持一致。
MTC是一种不需要人为参与的数据通信服务。大规模的MTC用户设备部署，可以用于安全、跟踪、付账、测量以及消费电子等领域，具体涉及的应用包括视频监控、供货链跟踪、智能电表，远程监控等。MTC要求较低的功率消耗，支持较低的数据传输速率和较低的移动性。目前LTE系 统主要是针对人与人(H2H)的通信服务。因此，实现MTC服务的规模竞争优势及应用前景，关键环节在于LTE网络支持低成本的MTC设备能够低成本工作。
一些MTC设备需要安装在居民楼地下室或者由绝缘箔片、金属护窗或者传统建筑物的厚墙保护的位置，相比较LTE网络中常规设备终端(如手机，平板电脑等)，这些设备的空中接口将明显遭受更严重的穿透损失。3GPP决定研究LTE网络提供MTC设备附加20dB覆盖增强服务的方案设计与性能评估，值得注意的是，位于糟糕网络覆盖区域的MTC设备具有这样的特点：非常低的数据传输速率，非常宽松的延时要求，以及有限的移动性。针对MTC特点，LTE网络可以进一步优化一些信令和(或)信道用以支持MTC。3GPP要求为新定义的低成本UE以及其他运行MTC服务(如，非常宽松的延迟要求)的UE提供一定的LTE网络覆盖增强，其中，对于LTE频分双工(FDD)网络提供15dB的网络覆盖增强。另外，并不是所有的运用MTC服务的用户设备都需要相同网络覆盖增强。
在2014年6月举行的3GPP RAN#64次全会上，提出了一个新的面向Rel-13的低复杂性和覆盖增强的MTC的工作项目(参见非专利文献：RP-140990New Work Item on Even Lower Complexity and Enhanced Coverage LTE UE for MTC，Ericsson，NSN)。在该工作项目的描述中，LTERel-13系统需要支持上下行1.4MHz射频带宽的MTC用户设备(以下称为窄带MTC UE)工作在任意的系统带宽(例如1.4MHz、3MHz、5MHz、10MHz、15MHz、20MHz等等)下，并且为该类MTC用户提供覆盖增强功能。在系统设计时，低成本MTC用户和覆盖增强MTC用户要采用统一的设计方案。降低MTC用户设备的能耗是该工作项目的主要目标之一。
针对3GPP LTE用户设备运行MTC业务并处于覆盖增强模式下，物理层信道(如EPDCCH/PDSCH/PUCCH/PUSCH)的覆盖增强设计与配置是一个需要标准化的工作。根据3GPP RAN1#74会议的讨论，在完成初始接入过后，任何一个需要重复传输的物理信道，其配置模式取决于基站端。3GPPRAN1#75会议的讨论指出，对于MTC用户设备处于覆盖增强模式，支持物理层信道PUCCH上重复传输ACK/NACK；由于低复杂度的MTC用户 只有一根天线，另出于节能的目的，发射功率可能降低。因此相比于普通用户，MTC用户的物理上行信道需要覆盖增强，其ACK/NACK在物理层信道PUCCH上重复传输。而这些MTC用户重复传输ACK/NACK所占用的PUCCH资源可能与普通用户占用的PUCCH资源冲突。如何解决PUCCH资源冲突问题及资源使用效率问题需要重新标准化。
另外，处于覆盖增强模式的用户设备运行MTC应用业务时，EPDCCH/PDSCH/PUCCH/PUSCH需要多个子帧的重复传输，如何确定信道间时序关系也需要重新标准化。
发明内容
针对以上问题，基于LTE网络，本发明提出了一种针对用户设备(例如低成本用户设备以及其他执行延迟容忍MTC服务并需要一定网络覆盖增强的用户设备)的上行物理控制信道资源的配置方法，以及相应的基站和用户设备。
具体地，根据本发明的一个方面，提供了一种由基站执行的方法，包括：确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用；确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。
在一个实施例中，如果HARQ-ACK的重复传输被启用，那么：
当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源；以及
当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3的整数。
在一个实施例中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或相应的PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。
在一个实施例中，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
根据本发明的另一个方面，提供了一种由基站执行的方法，包括：确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。
在一个实施例中，当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源；以及
当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3的整数。
在一个实施例中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或相应的PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。
在一个实施例中，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
根据本发明的另一个方面，提供了一种由用户设备UE执行的方法，包括：确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用；确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
在一个实施例中，如果HARQ-ACK的重复传输被启用，那么：
当EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引来获得用于传输HARQ-ACK的PUCCH资源；以及
当PDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。
在一个实施例中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则使用通过RRC信令或相应的PDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。
根据本发明的另一个方面，提供了一种由用户设备UE执行的方法，包括：确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
在一个实施例中，当EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引来获得用于传输HARQ-ACK的PUCCH资源；以及
当PDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。
在一个实施例中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则使用通过RRC信令或相应的PDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。
根据本发明的另一个方面，提供了一种基站，包括：确定单元，被配置为确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用，以及确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及配置单元， 被配置为为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。
在一个实施例中，如果HARQ-ACK的重复传输被启用，那么配置单元被配置为：当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源；以及当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，配置单元被配置为：当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，配置单元被配置为：通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。
在一个实施例中，配置单元被配置为：如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3的整数。
在一个实施例中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
在一个实施例中，配置单元被配置为：如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或相应的PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。
在一个实施例中，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
根据本发明的另一个方面，提供了一种基站，包括：确定单元，被配置为确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道 EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及配置单元，被配置为为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。
在一个实施例中，配置单元被配置为：当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源；以及当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，配置单元被配置为：通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。
在一个实施例中，配置单元被配置为：如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3的整数。
在一个实施例中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
在一个实施例中，配置单元被配置为：如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或相应的PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。
在一个实施例中，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
根据本发明的另一个方面，提供了一种用户设备，包括：确定单元，被配置为确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用，以及确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及 传输单元，被配置为使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
在一个实施例中，如果HARQ-ACK的重复传输被启用，那么传输单元被配置为：当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引来获得用于传输HARQ-ACK的PUCCH资源；以及当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，传输单元被配置为：当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，传输单元被配置为：如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。
在一个实施例中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则使用通过RRC信令或相应的PDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。
根据本发明的另一个方面，提供了一种用户设备，包括：确定单元，被配置为确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及传输单元，被配置为使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
在一个实施例中，传输单元被配置为：当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素 ECCE的索引来获得用于传输HARQ-ACK的PUCCH资源；以及当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，传输单元被配置为：如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。
在一个实施例中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则使用通过RRC信令或相应的PDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。
采用本发明，能够提高LTE支持MTC用户设备的资源利用率并改善频谱/能量效率，减少小区间的时间/频率资源冲突。
附图说明
通过下文结合附图的详细描述，本发明的上述和其它特征将会变得更加明显，其中：
图1示出了根据本发明实施例的由基站执行的方法的流程图；
图2示出了根据本发明PUCCH信道和相应的PDSCH信道的时序关系的示意图；
图3示出了编码后的ACK/NACK比特到物理层的处理方式；
图4示出了根据本发明实施例的由用户设备执行的方法的流程图；
图5示出了根据本发明实施例的基站的方框图；
图6示出了根据本发明实施例的用户设备的方框图；
图7示出了根据本发明实施例的由基站执行的另一种方法的流程图；
图8示出了根据本发明实施例的由用户设备执行的另一种方法的流程图。
具体实施方式
以下将结合附图和具体实施例，对本发明所提出的针对(需要额外覆盖增强或者不需要额外覆盖增强)低成本MTC用户设备以及其他支持延迟容忍的MTC服务并需要一定覆盖增强的用户设备的PDCCH信息发送/接收方法、基站和用户设备(UE)进行详细阐述。应当注意，本发明不应局限于下文所述的具体实施例。另外，为了简便起见，省略了对与本发明没有直接关联的公知技术的详细描述，以防止对本发明的理解造成混淆。
下文以LTE移动通信系统及其后续的演进版本作为示例应用环境，具体描述了根据本发明的多个实施例。然而，需要指出的是，本发明不限于以下实施例，而是可适用于更多其它的无线通信系统，例如今后的5G蜂窝通信系统。
图1示出了根据本发明实施例的由基站执行的方法的流程图。如图1所示，方法10在步骤S110处开始。
在步骤S120处，确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用。例如，HARQ-ACK的重复传输可以取决于高层启用或禁用用户特定参数ackNackRepetition。如果启用了HARQ-ACK重复传输，则MTC用户设备重复传输NANRep次HARQ-ACK，其中重复参数NANRep由高层配置。
在步骤S130处，确定(扩展)物理下行链路控制信道(E)PDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输。
在步骤S140处，为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。
在一个实施例中，如果HARQ-ACK的重复传输被启用，那么当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源。例如，当PDCCH/EPDCCH和一个由PDCCH/EPDCCH指示的PDSCH或者PDCCH/EPDCCH指示下行SPS释放相关的PDSCH均没有配置为重复传输时，用户设备首先在其通过相应的PDCCH CCE索引或EPDCCH ECCE索引隐式地获得的PUCCH资源上传输一次HARQ-ACK反馈。然后，在高层配置的PUCCH资源
Figure PCTCN2015071305-appb-000001
上重复传输NANRep-1次HARQ-ACK反馈。
当PDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。例如，当PDCCH/EPDCCH或者一个由PDCCH/EPDCCH指示的PDSCH或者PDCCH/EPDCCH指示下行SPS释放相关的PDSCH配置为重复传输时，用户设备在高层/RRC信令配置的PUCCH资源
Figure PCTCN2015071305-appb-000002
上连续传输NANRep次HARQ-ACK反馈。
相应的高层配置/RRC信令可放置在IE PUCCH-ConfigDedicated中，如下所示：
Figure PCTCN2015071305-appb-000003
其中，重复传输参数repetitionFactor指示NANRep，应从当前的{n2，n4，n6，spare1}扩展为{n2，n4，n6，n8，…}。参数n1PUCCH-AN-Rep指示
Figure PCTCN2015071305-appb-000004
在一个实施例中，当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。例如，如果未启用HARQ-ACK重复传输，则用户设备对应于每次接收到的PDSCH只传输一次HARQ-ACK反馈。当PDCCH/EPDCCH或者一个由PDCCH/EPDCCH指示的PDSCH或者PDCCH/EPDCCH指示下行SPS释放相关的PDSCH配置为重复传输时，用户设备在高层/RRC信令配置的PUCCH资源
Figure PCTCN2015071305-appb-000005
上传输一次HARQ-ACK反馈。其相应的高层配置/RRC信令可放置在IE PUCCH-ConfigDedicated中：
Figure PCTCN2015071305-appb-000006
其中，参数n1PUCCH-AN-r12指示
Figure PCTCN2015071305-appb-000007
在一个实施例中，针对用户设备使用MTC业务，如果该用户设备的 PDSCH传输在相应的PDCCH最后一次传输之后的第k个子帧中进行，所述k为大于零的整数，则通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。例如，用户设备的PDSCH传输在相应的PDCCH最后一次传输之后的第k个子帧中进行，所述k为大于零的整数时，用户设备在高层/RRC信令配置的PUCCH资源
Figure PCTCN2015071305-appb-000008
上连续传输NANRep次HARQ-ACK反馈。
在一个实施例中，通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。例如，可以把PUCCH资源显式地告知用户设备。具体地，可以将一组PUCCH资源
Figure PCTCN2015071305-appb-000009
由高层/RRC信令半静态配置给用户设备，然后通过相应的PDCCH/EPDCCH中的控制信息动态指示用户设备使用该组资源中的某一个资源。
如果未启用HARQ-ACK重复传输，则用户设备在所获得的PUCCH资源
Figure PCTCN2015071305-appb-000010
上传输一次HARQ-ACK反馈。以下给出一个具体示例。
如果高层/RRC信令配置的一组资源中组的大小为4，则PDCCH/EPDCCH中的用于动态指示PUCCH资源的控制信息可以位于DCI format中的TPC域，其映射方式由下表1示出。相应的高层配置/RRC信令可放置在IE PUCCH-ConfigDedicated中：
Figure PCTCN2015071305-appb-000011
Figure PCTCN2015071305-appb-000012
表1 HARQ-ACK资源的PUCCH资源值
如果启用HARQ-ACK重复传输，则用户设备在所获得的PUCCH资源
Figure PCTCN2015071305-appb-000013
上连续NANRep次HARQ-ACK反馈。以下给出一个具体示例：
如果高层/RRC信令配置的一组资源中组的大小为4，则PDCCH/EPDCCH中的用于动态指示PUCCH资源的控制信息可以位于DCI format中的TPC域，其映射方式由上表1示出。相应的高层配置/RRC信令可放置在IE PUCCH-ConfigDedicated中：
Figure PCTCN2015071305-appb-000014
在一个实施例中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3的整数。优选地，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
图2示出了根据本发明PUCCH信道和相应的PDSCH信道的时序关系的示意图。如图2所示，当第n号子帧为最后一个重复PDSCH的传输时，PUCCH在第n+k号子帧开始传输，其中k为大于3的整数。对于k的取值，用户设备可通过以下方式预先获知：预先确定；通过高层/RRC信令半静态配置；或通过PDCCH/EPDCCH中的控制信息动态地指示。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或相应的(E)PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。优选地，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
例如，如果启用HARQ-ACK重复传输，当用户设备只配置一个服务小区时，用户设备可以使用PUCCH format 3格式传输HARQ-ACK反馈。其中HARQ-ACK比特以TS36.2125.2.3.1节中所述方式操作，最后以图3所 示方式映射到物理层。具体的，如图3所示，一个ACK/NACK比特和调度请求比特(如果有的话)串联成一串比特序列。该序列使用块编码后变成48比特的信道编码，随后经过加扰、QPSK调制形成24个调制符号，这24个调制符号分成两组，每组12个调制符号分别对应到一个时隙。该组12个调制符号经过循环移位后送入DFT模块，再经过IFFT后映射到物理资源上。为增强复用容量，将12个调制符号与长度为5的正交序列相乘，从而使得一对物理资源块上最大能同时支持5个用户。
最后，方法10在步骤S150处结束。
本实施例的PUCCH资源配置方法允许网络侧(基站)显性地配置用户设备的PUCCH资源以及相应的PUCCH和PUSCH时序关系。采用该实施例的技术方案，能够提高LTE支持MTC用户设备的的资源利用率并改善频谱/能量效率，减少小区间的时间/频率资源冲突。
考虑到低复杂度MTC用户设备由于单天线造成的上行信道性能的损失以及较小的上行发射功率，其上行物理信道需要覆盖增强。因此在某些场景下，MTC用户设备的物理上行信道强制覆盖增强。
图7示出了根据本发明实施例的由基站执行的另一种方法的流程图。如图7所示，方法70在步骤S710处开始。
在步骤S720处，确定扩展物理下行链路控制信道EPDCCH和/或物理下行链路控制信道或物理下行链路共享信道PDSCH是否被配置为重复传输。
在步骤S730处，为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。
在一个实施例中，当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源。例如，当PDCCH/EPDCCH和一个由PDCCH/EPDCCH指示的PDSCH或者PDCCH/EPDCCH指示下行SPS释放相关的PDSCH均没有配置为重复传输时，用户设备首先在其通过相应的PDCCH CCE索引或EPDCCH ECCE索引隐式地获得的PUCCH资源上传输一次HARQ-ACK反馈。然后，在高层配置的PUCCH资源
Figure PCTCN2015071305-appb-000015
上重复传输NANRep-1次HARQ-ACK反馈。
当PDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。例如，当PDCCH/EPDCCH或者一个由PDCCH/EPDCCH指示的PDSCH或者PDCCH/EPDCCH指示下行SPS释放相关的PDSCH配置为重复传输时，用户设备在高层/RRC信令配置的PUCCH资源
Figure PCTCN2015071305-appb-000016
上连续传输NANRep次HARQ-ACK反馈。
相应的高层配置/RRC信令可放置在IE PUCCH-ConfigDedicated中，如下所示：
Figure PCTCN2015071305-appb-000017
其中，重复传输参数repetitionFactor指示NANRep，应从当前的{n2，n4，n6，spare1}扩展为{n2，n4，n6，n8，…}。参数n1PUCCH-AN-Rep指示
Figure PCTCN2015071305-appb-000018
在一个实施例中，针对用户设备使用MTC业务，如果该用户设备的PDSCH传输在相应的PDCCH最后一次传输之后的第k个子帧中进行，所述k为大于零的整数，则通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。例如，用户设备的PDSCH传输在相应的PDCCH最后一次传输之后的第k个子帧中进行，所述k为大于零的整数时，用户设备在高层/RRC信令配置的PUCCH资源
Figure PCTCN2015071305-appb-000019
上连续传输NANRep次HARQ-ACK反馈。
在一个实施例中，通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。例如，可以把PUCCH资源显式地告知用户设备。具体地，可以将一组PUCCH资源
Figure PCTCN2015071305-appb-000020
由高层/RRC信令半静态配置给用户设备，然后通过相应的PDCCH/EPDCCH中的控制信息动态指示用户设备使用该组资源中的某一个资源。
用户设备在所获得的PUCCH资源
Figure PCTCN2015071305-appb-000021
上连续NANRep次HARQ-ACK反馈。以下给出一个具体示例：
如果高层/RRC信令配置的一组资源中组的大小为4，则PDCCH/EPDCCH中的用于动态指示PUCCH资源的控制信息可以位于DCIformat中的TPC域，其映射方式由上表1示出。相应的高层配置/RRC信令可放置在IE PUCCH-ConfigDedicated中：
Figure PCTCN2015071305-appb-000022
在一个实施例中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3的整数。优选地，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
回到图2，其示出了根据本发明PUCCH信道和相应的PDSCH信道的时序关系的示意图。如图2所示，当第n号子帧为最后一个重复PDSCH的传输时，PUCCH在第n+k号子帧开始传输，其中k为大于3的整数。对于k的取值，用户设备可通过以下方式预先获知：预先确定；通过高层/RRC信令半静态配置；或通过PDCCH/EPDCCH中的控制信息动态地指示。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或相应的(E)PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。优选地，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
例如，如果启用HARQ-ACK重复传输，当用户设备只配置一个服务小区时，用户设备可以使用PUCCH format 3格式传输HARQ-ACK反馈。其中HARQ-ACK比特以TS36.212 5.2.3.1节中所述方式操作，最后以图3所示方式映射到物理层。具体的，如图3所示，一个ACK/NACK比特和调度请求比特(如果有的话)串联成一串比特序列。该序列使用块编码后变成48比特的信道编码，随后经过加扰、QPSK调制形成24个调制符号，这 24个调制符号分成两组，每组12个调制符号分别对应到一个时隙。该组12个调制符号经过循环移位后送入DFT模块，再经过IFFT后映射到物理资源上。为增强复用容量，将12个调制符号与长度为5的正交序列相乘，从而使得一对物理资源块上最大能同时支持5个用户。
最后，方法70在步骤S740处结束。
图4示出了根据本发明实施例的由用户设备执行的方法的流程图。如图4所示，方法40在步骤S400处开始。
在步骤S410处，确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用，以及确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输。
在步骤S420处，使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
在一个实施例中，如果HARQ-ACK的重复传输被启用，那么当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH/EPDCCH的控制信道元素CCE/ECCE的索引来获得用于传输第一次HARQ-ACK的PUCCH资源，通过无线电资源控制RRC信令来获得用于传输剩余NANRep-1次HARQ-ACK的PUCCH资源；以及当PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。优选地，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH中的控制信息动态地确定。
优选地，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则使用通过RRC信令或相应的PDCCH/EPDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。例如，UE的HARQ-ACK重复传输的方式可以包括PUCCH格式3的方式。
最后，方法40在步骤S430处结束。
图8示出了根据本发明实施例的由用户设备执行的另一种方法的流程图。如图8所示，方法80在步骤S800处开始。
在步骤S810处，确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输。
在步骤S820处，使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
在一个实施例中，当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH/EPDCCH的控制信道元素CCE/ECCE的索引来获得用于传输第一次HARQ-ACK的PUCCH资源，通过无线电资源控制RRC信令来获得用于传输剩余NANRep-1次HARQ-ACK的PUCCH资源；以及当PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，当PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。优选地，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH中的控制信息动态地确定。
优选地，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则使用通过RRC信令或相应的PDCCH/EPDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。例如，UE的HARQ-ACK重复传输的方式可以包括PUCCH格式3的方式。
最后，方法80在步骤S830处结束。
图5示出了根据本发明实施例的基站的方框图。如图5所示，基站50包括确定单元510和配置单元520。
确定单元510被配置为确定混合自动重传请求应答HARQ-ACK的重复 传输是否被启用，以及确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输。
可选的，确定单元510被配置为确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输。
配置单元520被配置为为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。
在一个实施例中，如果HARQ-ACK的重复传输被启用，那么配置单元520被配置为：当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源；以及当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，HARQ-ACK的重复传输强制启用，不需要高层信令配置。那么配置单元520被配置为：当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源；以及当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，配置单元520被配置为：当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，配置单元520被配置为：针对用户设备使用MTC业务，如果该用户设备的PDSCH传输在相应的PDCCH最后一次传输之后的第k个子帧中进行，所述k为大于零的整数，则通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。例如，用户设备的PDSCH传输在相应的PDCCH最后一次传输之后的第k个子帧中进行，所述k为大于零的整数时，用户设备在高层/RRC信令配置的PUCCH资源
Figure PCTCN2015071305-appb-000023
上连续传输NANRep次HARQ-ACK反馈。
在一个实施例中，配置单元520被配置为：通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。
在一个实施例中，配置单元520被配置为：如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3的整数。优选地，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
在一个实施例中，配置单元520被配置为：如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或相应的(E)PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。优选地，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
图6示出了根据本发明实施例的用户设备的方框图。如图6所示，用户设备60包括确定单元610和传输单元620。
确定单元610被配置为确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用，以及确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道(E)PDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输。
可选的，确定单元610被配置为确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道(E)PDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输。
传输单元620被配置为使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
在一个实施例中，如果HARQ-ACK的重复传输被启用，那么传输单元620被配置为：当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道信息元素CCE的索引或者扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引来获得用于传输第一次HARQ-ACK的PUCCH资源，通过无线电资源控制RRC信令来获得用于传输剩余NANRep-1次HARQ-ACK的PUCCH资源；以及当 PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，HARQ-ACK的重复传输强制启用，传输单元620被配置为：当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道信息元素CCE的索引或者扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引来获得用于传输第一次HARQ-ACK的PUCCH资源，通过无线电资源控制RRC信令来获得用于传输剩余NANRep-1次HARQ-ACK的PUCCH资源；以及当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，传输单元620被配置为：当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
在一个实施例中，传输单元620被配置为：如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。优选地，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH中的控制信息动态地确定。
在一个实施例中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则传输单元620使用通过RRC信令或相应的PDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。
应该理解，本发明的上述实施例可以通过软件、硬件或者软件和硬件两者的结合来实现。例如，上述实施例中的基站和用户设备内部的各种组件可以通过多种器件来实现，这些器件包括但不限于：模拟电路器件、数字电路器件、数字信号处理(DSP)电路、可编程处理器、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、可编程逻辑器件(CPLD)，等等。
在本申请中，“基站”是指具有较大发射功率和较广覆盖面积的移动通信数据和控制交换中心，包括资源分配调度、数据接收发送等功能。“用户设备”是指用户移动终端，例如包括移动电话、笔记本等可以与基站或者微基站进行无线通信的终端设备。
此外，这里所公开的本发明的实施例可以在计算机程序产品上实现。 更具体地，该计算机程序产品是如下的一种产品：具有计算机可读介质，计算机可读介质上编码有计算机程序逻辑，当在计算设备上执行时，该计算机程序逻辑提供相关的操作以实现本发明的上述技术方案。当在计算系统的至少一个处理器上执行时，计算机程序逻辑使得处理器执行本发明实施例所述的操作(方法)。本发明的这种设置典型地提供为设置或编码在例如光介质(例如CD-ROM)、软盘或硬盘等的计算机可读介质上的软件、代码和/或其他数据结构、或者诸如一个或多个ROM或RAM或PROM芯片上的固件或微代码的其他介质、或一个或多个模块中的可下载的软件图像、共享数据库等。软件或固件或这种配置可安装在计算设备上，以使得计算设备中的一个或多个处理器执行本发明实施例所描述的技术方案。
尽管以上已经结合本发明的优选实施例示出了本发明，但是本领域的技术人员将会理解，在不脱离本发明的精神和范围的情况下，可以对本发明进行各种修改、替换和改变。因此，本发明不应由上述实施例来限定，而应由所附权利要求及其等价物来限定。

Claims (56)

  1. 一种由基站执行的方法，包括：
    确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用；
    确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及
    为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。
  2. 根据权利要求1所述的方法，其中，如果HARQ-ACK的重复传输被启用，那么：
    当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源；以及
    当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
  3. 根据权利要求1所述的方法，其中，当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
  4. 根据权利要求1所述的方法，其中，通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。
  5. 根据权利要求1所述的方法，其中，针对用户设备使用低成本机器间通信MTC业务，如果该用户设备的PDSCH传输在相应的PDCCH最后一次传输之后的第k个子帧中进行，则通过无线电资源控制RRC信令为用户设备配置用于传输HARQ-ACK的PUCCH资源，所述k为大于零的整数。
  6. 根据权利要求1所述的方法，其中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3的整数。
  7. 根据权利要求6所述的方法，其中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
  8. 根据权利要求1所述的方法，其中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或相应的PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。
  9. 根据权利要求8所述的方法，其中，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
  10. 一种由基站执行的方法，包括：
    确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及
    为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。
  11. 根据权利要求10所述的方法，其中，
    当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源；以及
    当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
  12. 根据权利要求10所述的方法，其中，通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。
  13. 根据权利要求10所述的方法，其中，针对用户设备使用低成本机器间通信MTC业务，如果该用户设备的PDSCH传输在相应的PDCCH最后一次传输之后的第k个子帧中进行，则通过无线电资源控制RRC信令为用户设备配置用于传输HARQ-ACK的PUCCH资源，所述k为大于零的整数。
  14. 根据权利要求10所述的方法，其中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3 的整数。
  15. 根据权利要求14所述的方法，其中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
  16. 根据权利要求10所述的方法，其中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或相应的PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。
  17. 根据权利要求16所述的方法，其中，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
  18. 一种由用户设备UE执行的方法，包括：
    确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用；
    确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及
    使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
  19. 根据权利要求18所述的方法，其中，如果HARQ-ACK的重复传输被启用，那么：
    当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引来获得用于传输HARQ-ACK的PUCCH资源；以及
    当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
  20. 根据权利要求18所述的方法，其中，当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
  21. 根据权利要求18所述的方法，其中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。
  22. 根据权利要求21所述的方法，其中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过 PDCCH/EPDCCH中的控制信息动态地确定。
  23. 根据权利要求18所述的方法，其中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则使用通过RRC信令或相应的PDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。
  24. 一种由用户设备UE执行的方法，包括：
    确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及
    使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
  25. 根据权利要求24所述的方法，其中，
    当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引来获得用于传输HARQ-ACK的PUCCH资源；以及
    当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
  26. 根据权利要求24所述的方法，其中，如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。
  27. 根据权利要求26所述的方法，其中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
  28. 根据权利要求24所述的方法，其中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则使用通过RRC信令或相应的PDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。
  29. 一种基站，包括：
    确定单元，被配置为确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用，以及确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及
    配置单元，被配置为为用户设备UE配置用于传输HARQ-ACK的物理 上行链路控制信道PUCCH资源。
  30. 根据权利要求29所述的基站，其中，如果HARQ-ACK的重复传输被启用，那么配置单元被配置为：
    当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源；以及
    当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
  31. 根据权利要求29所述的基站，其中，配置单元被配置为：当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
  32. 根据权利要求29所述的基站，其中，配置单元被配置为：针对用户设备使用低成本机器间通信MTC业务，如果该用户设备的PDSCH传输在相应的PDCCH最后一次传输之后的第k个子帧中进行，则通过无线电资源控制RRC信令为用户设备配置用于传输HARQ-ACK的PUCCH资源，所述k为大于零的整数。
  33. 根据权利要求29所述的基站，其中，配置单元被配置为：通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。
  34. 根据权利要求29所述的基站，其中，配置单元被配置为：如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3的整数。
  35. 根据权利要求34所述的基站，其中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
  36. 根据权利要求29所述的基站，其中，配置单元被配置为：如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或 相应的PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。
  37. 根据权利要求29所述的方法，其中，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
  38. 一种基站，包括：
    确定单元，被配置为确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及
    配置单元，被配置为为用户设备UE配置用于传输HARQ-ACK的物理上行链路控制信道PUCCH资源。
  39. 根据权利要求38所述的基站，其中，配置单元被配置为：
    当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引为UE配置用于传输HARQ-ACK的PUCCH资源；以及
    当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令为UE配置用于传输HARQ-ACK的PUCCH资源。
  40. 根据权利要求38所述的基站，其中，配置单元被配置为：针对用户设备使用低成本机器间通信MTC业务，如果该用户设备的PDSCH传输在相应的PDCCH最后一次传输之后的第k个子帧中进行，则通过无线电资源控制RRC信令为用户设备配置用于传输HARQ-ACK的PUCCH资源，所述k为大于零的整数。
  41. 根据权利要求38所述的基站，其中，配置单元被配置为：通过无线电资源控制RRC信令为UE配置一组PUCCH资源，并且通过PDCCH/EPDCCH指示UE应当在该组PUCCH资源中的哪个资源上传输HARQ-ACK。
  42. 根据权利要求38所述的基站，其中，配置单元被配置为：如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则将UE的PUCCH传输设置为在相应的PDSCH的最后一次传输之后的第k个子帧中进行，所述k为大于3的整数。
  43. 根据权利要求42所述的基站，其中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过 PDCCH/EPDCCH中的控制信息动态地确定。
  44. 根据权利要求38所述的基站，其中，配置单元被配置为：如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则通过RRC信令或相应的PDCCH控制信息来配置UE的HARQ-ACK重复传输的方式。
  45. 根据权利要求38所述的方法，其中，UE的HARQ-ACK重复传输的方式包括PUCCH格式3的方式。
  46. 一种用户设备UE，包括：
    确定单元，被配置为确定混合自动重传请求应答HARQ-ACK的重复传输是否被启用，以及确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及
    传输单元，被配置为使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
  47. 根据权利要求46所述的用户设备，其中，如果HARQ-ACK的重复传输被启用，那么传输单元被配置为：
    当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引来获得用于传输HARQ-ACK的PUCCH资源；以及
    当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
  48. 根据权利要求46所述的用户设备，其中，传输单元被配置为：当HARQ-ACK的重复传输没有被启用并且PDCCH/EPDCCH或者PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
  49. 根据权利要求46所述的用户设备，其中，传输单元被配置为：如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。
  50. 根据权利要求49所述的用户设备，其中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过 PDCCH/EPDCCH中的控制信息动态地确定。
  51. 根据权利要求46所述的用户设备，其中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则使用通过RRC信令或相应的PDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。
  52. 一种用户设备UE，包括：
    确定单元，被配置为确定物理下行链路控制信道PDCCH/扩展物理下行链路控制信道EPDCCH或物理下行链路共享信道PDSCH是否被配置为重复传输；以及
    传输单元，被配置为使用基站分配的物理上行链路控制信道PUCCH资源来传输HARQ-ACK。
  53. 根据权利要求52所述的用户设备，其中，传输单元被配置为：
    当PDCCH/EPDCCH和PDSCH均没有被配置为重复传输时，通过物理下行链路控制信道PDCCH的控制信道元素CCE的索引或扩展物理下行链路控制信道EPDCCH的控制信道元素ECCE的索引来获得用于传输HARQ-ACK的PUCCH资源；以及
    当PDCCH/EPDCCH或PDSCH被配置为重复传输时，通过无线电资源控制RRC信令来获得用于传输HARQ-ACK的PUCCH资源。
  54. 根据权利要求52所述的用户设备，其中，传输单元被配置为：如果UE处于覆盖增强模式或者UE的PDSCH被配置为重复传输，则UE的PUCCH传输在相应的PDSCH的最后一次接收之后的第k个子帧中进行，所述k为大于3的整数。
  55. 根据权利要求54所述的用户设备，其中，通过以下任意一种方式来确定所述k的取值：预先确定、通过RRC信令半静态地配置、或者通过PDCCH/EPDCCH中的控制信息动态地确定。
  56. 根据权利要求52所述的用户设备，其中，如果UE处于覆盖增强模式或者UE的PUCCH传输需要增强，则使用通过RRC信令或相应的PDCCH控制信息而配置的UE的HARQ-ACK重复传输的方式来传输HARQ-ACK。
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