WO2017118394A1 - 上行参考信号传输方法和接收方法、以及用户设备和基站 - Google Patents

上行参考信号传输方法和接收方法、以及用户设备和基站 Download PDF

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Publication number
WO2017118394A1
WO2017118394A1 PCT/CN2017/070252 CN2017070252W WO2017118394A1 WO 2017118394 A1 WO2017118394 A1 WO 2017118394A1 CN 2017070252 W CN2017070252 W CN 2017070252W WO 2017118394 A1 WO2017118394 A1 WO 2017118394A1
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WIPO (PCT)
Prior art keywords
dmrs
pdcch
pucch
sequence
downlink control
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PCT/CN2017/070252
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English (en)
French (fr)
Inventor
张萌
刘仁茂
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夏普株式会社
张萌
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Application filed by 夏普株式会社, 张萌 filed Critical 夏普株式会社
Priority to EP17735832.2A priority Critical patent/EP3402272A4/en
Priority to US16/068,289 priority patent/US20190020518A1/en
Publication of WO2017118394A1 publication Critical patent/WO2017118394A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1221—Wireless traffic scheduling based on age of data to be sent
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • 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
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • 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
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • 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
    • H04L5/0091—Signaling for the administration of the divided path

Definitions

  • the present invention relates to the field of wireless communication technologies, and more particularly, to an uplink reference signal transmission method and reception method, and a user equipment and a base station that respectively perform the above methods.
  • MTC Machine Type Communication
  • UE user equipment
  • MTC requires lower power consumption, supports lower data transmission rates and lower mobility.
  • the current LTE system is mainly aimed at human-to-human communication services. 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.
  • MTC equipment needs to be installed in the basement of the residential building or protected by insulated foil, metal window or thick wall of traditional buildings, compared to conventional equipment terminals (such as mobile phones, tablets, etc.) in LTE networks.
  • the air interface will obviously suffer from more severe penetration losses.
  • 3GPP decided to study the design and performance evaluation of MTC devices with additional 20dB coverage enhancement. It is worth noting that MTC devices located in poor network coverage areas have the following characteristics: very low data transmission rate, very loose latency requirements and limited Mobility.
  • the LTE network can further optimize some signaling and/or channels to better support the MTC service.
  • Non-Patent Document RP-140990 New Work Item on Even Lower Complexity and Enhanced Coverage LTE UE for MTC, Ericsson, NSN.
  • the LTE Rel-13 system needs to support the uplink and downlink 1.4MHz RF bandwidth of the MTC user equipment to work in any system bandwidth (for example, 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, etc.).
  • the standardization of this work item will be completed by the end of 2015.
  • NB-IoT Narrowband Internet of Thing
  • the User Equipment (UE) of the NB-IoT will support the uplink and downlink 180KHz radio frequency bandwidth.
  • the minimum granularity of resource allocation of the UE is one physical resource block (Physical Reource Block, PRB), that is, the physical uplink shared channel (PUSCH) of the existing LTE system, and
  • PRB Physical Reource Block
  • the resource allocation of the Physical Uplink Control Channel (PUCCH) is based on PRB.
  • the NB-IoT UE only supports the uplink and downlink 180 kHz radio frequency bandwidth, which is equivalent to a PRB size RF bandwidth. It requires a more accurate and less granular resource indication mode.
  • the invention mainly solves the uplink demodulation reference signal of the NB-IoT physical uplink control channel (NB-PUCCH) in the single-tone transmission and the multi-tone transmission scenario supported by the NB-IoT uplink transmission ( Demodulation Reference Signal, DMRS) Design and indication issues.
  • NB-PUCCH physical uplink control channel
  • DMRS Demodulation Reference Signal
  • an uplink reference signal transmission method performed by a user equipment UE, comprising: determining one or more parameters, the one or more parameters used to generate a narrowband IoT uplink control channel NB a demodulation reference signal DMRS of PUCCH, wherein for tone uplink transmission, parameters for generating DMRS include orthogonal cover code OCC sequence and base sequence; and for multitone uplink transmission, parameters for generating DMRS include cyclic shift And an OCC sequence and a base sequence; generating a DMRS of the NB-PUCCH based on the determined parameters; and transmitting the generated DM-PUCCH DMRS to the base station.
  • the OCC sequence adopted by the DMRS of the NB-PUCCH is determined by the location of the resource unit allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the location of the resource unit allocated to the NB-PDCCH is one of the following:
  • the OCC sequence adopted by the DMRS of the NB-PUCCH is indicated by the downlink control information carried by the narrowband IoT downlink control channel NB-PDCCH.
  • the cyclic shift and OCC sequence adopted by the DMRS of the NB-PUCCH is determined by the resource unit allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the cyclic shift and/or OCC sequence employed by the DMRS of the NB-PUCCH is determined by the number of tones allocated to the NB-PDCCH.
  • the cyclic shift and OCC sequence employed by the DMRS of the NB-PUCCH is determined by the location of the resource unit allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the location of the resource unit allocated to the NB-PDCCH is one of the following:
  • the cyclic shift and OCC sequence adopted by the DMRS of the NB-PUCCH are indicated by the downlink control information carried by the narrowband IoT downlink control channel NB-PDCCH.
  • an uplink reference signal receiving method performed by a base station including: receiving, by a UE, a demodulation reference signal DMRS of a narrowband IoT uplink control channel NB-PUCCH, the DMRS passing through a UE Generated by the determined one or more parameters, wherein for the tone uplink transmission, the parameters for generating the DMRS include the orthogonal cover code OCC sequence and the base sequence; and for the multi-tone uplink transmission, the parameters for generating the DMRS include cyclic shift a bit, an OCC sequence, and a base sequence; and demodulating the NB-PUCCH according to the received DMRS.
  • DM-PUCCH DMRS is adopted
  • the OCC sequence is determined by the location of the resource elements allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the location of the resource unit allocated to the NB-PDCCH is one of the following:
  • the OCC sequence adopted by the DMRS of the NB-PUCCH is indicated by the downlink control information carried by the narrowband IoT downlink control channel NB-PDCCH.
  • the cyclic shift and OCC sequence adopted by the DMRS of the NB-PUCCH is determined by the resource unit allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the cyclic shift and/or OCC sequence employed by the DMRS of the NB-PUCCH is determined by the number of tones allocated to the NB-PDCCH.
  • the cyclic shift and OCC sequence employed by the DMRS of the NB-PUCCH is determined by the location of the resource unit allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the location of the resource unit allocated to the NB-PDCCH is one of the following:
  • the cyclic shift and OCC sequence adopted by the DMRS of the NB-PUCCH are indicated by the downlink control information carried by the narrowband IoT downlink control channel NB-PDCCH.
  • a user equipment UE including:
  • a determining unit configured to determine one or more parameters, the one or more parameters used to generate a demodulation reference signal DMRS of the narrowband IoT uplink control channel NB-PUCCH, where the DMRS is generated for the tone uplink transmission
  • the parameters include an orthogonal cover code OCC sequence and a base sequence; and for multi-tone uplink transmission, parameters for generating a DMRS include a cyclic shift, an OCC sequence, and a base sequence;
  • Generating unit configured to generate a DMRS of the NB-PUCCH based on the determined parameter
  • the transceiver is configured to send the generated DMRS of the NB-PUCCH to the base station.
  • the determining unit determines the OCC sequence used by the DMRS of the NB-PUCCH by the location of the resource unit allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the location of the resource unit allocated to the NB-PDCCH is one of the following:
  • the determining unit indicates the OCC sequence adopted by the DMRS of the NB-PUCCH through the downlink control information carried by the narrowband IoT downlink control channel NB-PDCCH.
  • the determining unit determines the cyclic shift and OCC sequence adopted by the DMRS of the NB-PUCCH by the resource unit allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the determining unit determines the cyclic shift and/or OCC sequence employed by the DMRS of the NB-PUCCH by the number of tones allocated to the NB-PDCCH.
  • the determining unit determines the cyclic shift and OCC sequence used by the DMRS of the NB-PUCCH by the location of the resource unit allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the location of the resource unit allocated to the NB-PDCCH is one of the following:
  • the determining unit indicates the cyclic shift and the OCC sequence adopted by the DMRS of the NB-PUCCH through the downlink control information carried by the narrowband IoT downlink control channel NB-PDCCH.
  • a base station comprising:
  • a transceiver configured to receive, by the UE, a demodulation reference signal DMRS of the narrowband IoT uplink control channel NB-PUCCH, where the DMRS is generated by one or more parameters determined by the UE, where
  • the parameters for generating the DMRS include an orthogonal cover code OCC sequence and a base sequence; and for multi-tone uplink transmission, parameters for generating the DMRS include a cyclic shift, an OCC sequence, and a base sequence;
  • a demodulating unit configured to demodulate the NB-PUCCH according to the received DMRS.
  • the OCC sequence used by the DMRS of the NB-PUCCH is determined by the location of the resource unit allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the location of the resource unit allocated to the NB-PDCCH is one of the following:
  • the OCC sequence adopted by the DMRS of the NB-PUCCH is indicated by the downlink control information carried by the narrowband IoT downlink control channel NB-PDCCH.
  • the cyclic shift and OCC sequence employed by the DMRS of the NB-PUCCH is determined by the resource elements allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the cyclic shift and/or OCC sequence employed by the DMRS of the NB-PUCCH is determined by the number of tones allocated to the NB-PDCCH.
  • the cyclic shift and OCC sequence employed by the DMRS of the NB-PUCCH is determined by the location of the resource unit allocated to the narrowband IoT downlink control channel NB-PDCCH.
  • the location of the resource unit allocated to the NB-PDCCH is one of the following:
  • the cyclic shift and OCC sequence adopted by the DMRS of the NB-PUCCH is indicated by the downlink control information carried by the narrowband IoT downlink control channel NB-PDCCH.
  • FIG. 1 is a flow chart schematically showing an uplink reference signal transmission method performed by a UE according to an embodiment of the present invention
  • FIG. 2 is a flow chart schematically showing an uplink reference signal receiving method performed by a base station according to an embodiment of the present invention
  • FIG. 3 is a block diagram showing the structure of a UE according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing the structure of a base station according to an embodiment of the present invention.
  • FIG. 1 schematically shows a flow chart of an uplink reference signal transmission method performed by a UE according to an embodiment of the present invention. As shown in FIG. 1, method 100 includes the following steps.
  • Step S101 The UE determines one or more parameters, and the one or more parameters are used to generate a DMRS of the NB-PUCCH.
  • the parameters for generating the DMRS include an Orthogonal Cover Code (OCC) sequence and a Base Sequence;
  • OCC Orthogonal Cover Code
  • the parameters for generating the DMRS include a cyclic shift (Cyclic Shift), OCC sequence and base sequence.
  • the present invention relates to the design of OCC sequences for DMRS for mono tone uplink transmission, and the design of cyclic shift and OCC sequences for DMRS for multitone uplink transmission.
  • the design of the prior art is still used.
  • the OCC sequence employed by the DMRS of the NB-PUCCH is determined by the location indication of the resource unit allocated to the NB-IoT Physical Downlink Control Channel (NB-PDCCH).
  • the location indication of the resource unit allocated to the NB-PDCCH is the sequence number of the first subcarrier allocated to the NB-PDCCH, that is, the sequence number corresponding to the subcarrier with the smallest sequence number.
  • the location indication of the resource element allocated to the NB-PDCCH is the sequence number of the first Enhanced Resource Element Group (EREG) of the resource elements allocated to the NB-PDCCH, ie, the sequence number The serial number corresponding to the smallest EREG.
  • EREG Enhanced Resource Element Group
  • the OCC sequence adopted by the DMRS of the NB-PUCCH is indicated by downlink control information (DCI) carried by the NB-PDCCH.
  • DCI downlink control information
  • DCI can be a bit string.
  • the bit string is 0, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 1.
  • the bit string is 1, indicating that the DMRS of the NB-PUCCH uses the OCC sequence of sequence number 2.
  • bit string For example, if the length of the bit string is 2, then
  • the bit string is 00, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 1.
  • the bit string is 01, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 2.
  • the bit string is 10, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 3.
  • the bit string is 11, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 4.
  • the bit string is 000, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 1.
  • the bit string is 001, indicating that the DMRS of the NB-PUCCH uses the OCC sequence of sequence number 2.
  • the bit string is 010, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 3.
  • the bit string is 011, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 4.
  • the bit string is 100, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 5.
  • the bit string is 101, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 6.
  • the bit string is 110, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 7.
  • the bit string is 111, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 8.
  • bit string For example, if the length of the bit string is 4, then
  • the bit string is 0000, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 1.
  • the bit string is 0001, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 2.
  • the bit string is 0010, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 3.
  • the bit string is 0011, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 4.
  • the bit string is 0100, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 5.
  • the bit string is 0101, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 6.
  • the bit string is 0110, indicating that the DMRS of the NB-PUCCH uses the OCC sequence of sequence number 7.
  • the bit string is 0111, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 8.
  • the bit string is 1000, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 9.
  • the bit string is 1001, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 10.
  • the bit string is 1010, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 11.
  • the bit string is 1011, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 12.
  • the bit string is 1100, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 13.
  • the bit string is 1101, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 14.
  • the bit string is 1110, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 15.
  • the bit string is 1111, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 16.
  • the set of cyclic shift and OCC sequences employed by the DMRS of the NB-PUCCH supported by the UE is determined by the resource unit allocated to the NB-PDCCH.
  • the set of cyclic shifts and OCC sequences supported by the UE is determined by the number of subcarriers or tones assigned to the NB-PDCCH;
  • the cyclic shift that the UE can support is determined by the number of subcarriers or tones allocated to the NB-PDCCH;
  • the OCC sequence that the UE can support is determined by the number of subcarriers or tones allocated to the NB-PDCCH.
  • the cyclic shift and OCC sequence employed by the DMRS of the NB-PUCCH is determined by the location indication of the resource unit allocated to the NB-PDCCH.
  • the location indication of the resource unit allocated to the NB-PDCCH is the sequence number of the first subcarrier allocated to the NB-PDCCH, that is, the sequence number corresponding to the subcarrier with the smallest sequence number, Uniquely corresponds to an OCC sequence and cyclic shift.
  • the location indication of the resource unit allocated to the NB-PDCCH is the sequence number of the first EREG in the resource unit allocated to the NB-PDCCH, that is, the sequence number corresponding to the EREG with the smallest sequence number, and the unique correspondence An OCC sequence and a cyclic shift.
  • the cyclic shift and OCC sequence employed by the DMRS of the NB-PUCCH is indicated by the DCI carried by the NB-PDCCH.
  • DCI can be a bit string
  • the bit string is 0, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 1, and a cyclic shift sequence of sequence number 1 is used.
  • the bit string is 1, indicating that the DMRS of the NB-PUCCH adopts the OCC sequence of sequence number 2, the same A cyclic shift sequence of sequence number 2 is used.
  • bit string For example, if the length of the bit string is 2, then
  • the bit string is 00, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 1, and a cyclic shift sequence of sequence number 1 is used.
  • the bit string is 01, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 2, and a cyclic shift sequence of sequence number 2 is used.
  • the bit string is 10, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 3, and uses a cyclic shift sequence of sequence number 3.
  • the bit string is 11, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 4, and uses a cyclic shift sequence of sequence number 4.
  • the bit string is 000, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 1, and a cyclic shift sequence of sequence number 1 is used.
  • the bit string is 001, indicating that the DMRS of the NB-PUCCH adopts the OCC sequence of sequence number 2, and the cyclic shift sequence of sequence number 2 is used.
  • the bit string is 010, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 3, and a cyclic shift sequence of sequence number 3 is used.
  • the bit string is 011, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 4, and a cyclic shift sequence of sequence number 4 is used.
  • the bit string is 100, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 5, and uses a cyclic shift sequence of sequence number 5.
  • the bit string is 101, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 6, and a cyclic shift sequence of sequence number 6 is used.
  • the bit string is 110, indicating that the DMRS of the NB-PUCCH adopts the OCC sequence of sequence number 7, and the cyclic shift sequence of sequence number 7 is used.
  • the bit string is 111, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 8, and a cyclic shift sequence of sequence number 8 is used.
  • bit string For example, if the length of the bit string is 4, then
  • the bit string is 0000, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 1, and a cyclic shift sequence of sequence number 1 is used.
  • the bit string is 0001, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 2, and a cyclic shift sequence of sequence number 2 is used.
  • the bit string is 0010, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 3, and a cyclic shift sequence of sequence number 3 is used.
  • the bit string is 0011, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 4, and a cyclic shift sequence of sequence number 4 is used.
  • the bit string is 0100, indicating that the DMRS of the NB-PUCCH adopts the OCC sequence of sequence number 5, and uses a cyclic shift sequence of sequence number 5.
  • the bit string is 0101, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 6, and a cyclic shift sequence of sequence number 6 is used.
  • the bit string is 0110, indicating that the DMRS of the NB-PUCCH adopts the OCC sequence of sequence number 7, and the cyclic shift sequence of sequence number 7 is used.
  • the bit string is 0111, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 8, and a cyclic shift sequence of sequence number 8 is used.
  • the bit string is 1000, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 9, and a cyclic shift sequence of sequence number 9 is used.
  • the bit string is 1001, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 10, and uses a cyclic shift sequence of sequence number 10.
  • the bit string is 1010, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 11, and a cyclic shift sequence of sequence number 11 is used.
  • the bit string is 1011, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 12, and uses a cyclic shift sequence of sequence number 12.
  • the bit string is 1100, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 13, and a cyclic shift sequence of sequence number 13 is used.
  • the bit string is 1101, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 14, and a cyclic shift sequence of sequence number 14 is used.
  • the bit string is 1110, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 15, and a cyclic shift sequence of sequence number 15 is used.
  • the bit string is 1111, indicating that the DMRS of the NB-PUCCH adopts an OCC sequence of sequence number 16, At the same time, a cyclic shift sequence of sequence number 16 is used.
  • Step S103 The UE generates a DMRS of the NB-PUCCH based on the determined parameters.
  • Step S105 The UE sends the generated DMRS of the NB-PUCCH to the base station.
  • FIG. 2 schematically shows a flowchart of an uplink reference signal receiving method performed by a base station according to an embodiment of the present invention. As shown in FIG. 2, method 200 includes the following steps.
  • Step S201 The base station receives the DMRS of the NB-PUCCH from the UE, where the DMRS is generated by one or more parameters determined by the UE, where the parameters for generating the DMRS include the orthogonal cover code OCC sequence and Base sequence; and for multitone uplink transmission, parameters for generating DMRS include cyclic shift, OCC sequence, and base sequence;
  • Step S203 The base station demodulates the NB-PUCCH according to the received DMRS of the NB-PUCCH.
  • FIG. 3 schematically shows a structural block diagram of a UE according to an embodiment of the present invention. It will be understood that only the structures associated with the present invention in the UE are shown here to avoid confusion.
  • the UE 300 includes a determining unit 301, a generating unit 303, and a transceiver 305 for performing the method 100 as shown in FIG.
  • the determining unit 301 determines one or more parameters, the one or more parameters used to generate a DMRS of the NB-PUCCH, wherein for the tone uplink transmission, the parameters used to generate the DMRS include an orthogonal cover code OCC sequence and a base sequence; And for multi-tone uplink transmission, parameters for generating DMRS include cyclic shift, OCC sequence, and base sequence.
  • the generating unit 303 generates a DMRS of the NB-PUCCH based on the determined parameters.
  • the transceiver 305 transmits the generated DMRS of the NB-PUCCH to the base station.
  • the determining unit 301 may determine the OCC sequence adopted by the DMRS of the NB-PUCCH by the location of the resource unit allocated to the NB-PDCCH.
  • the location of the resource unit allocated to the NB-PDCCH may be one of the following:
  • a first subcarrier of the NB-PDCCH that is, a subcarrier having the smallest sequence number
  • the first EREG of the NB-PDCCH that is, the EREG with the smallest sequence number.
  • the determining unit 301 may indicate the OCC sequence adopted by the DMRS of the NB-PUCCH by using the DCI carried by the NB-PDCCH.
  • the determining unit 301 may determine a cyclic shift and an OCC sequence adopted by the DMRS of the NB-PUCCH by the resource unit allocated to the NB-PDCCH. Specifically, the determining unit 301 may determine a cyclic shift and/or an OCC sequence adopted by the DMRS of the NB-PUCCH by the number of subcarriers or tones allocated to the NB-PDCCH.
  • the determining unit 301 may determine a cyclic shift and an OCC sequence employed by the DMRS of the NB-PUCCH by the location of the resource unit allocated to the NB-PDCCH.
  • the location of a resource unit allocated to the NB-PDCCH is one of the following:
  • a first subcarrier of the NB-PDCCH that is, a subcarrier having the smallest sequence number
  • the first EREG of the NB-PDCCH that is, the EREG with the smallest sequence number.
  • the determining unit 301 may indicate the cyclic shift and OCC sequence adopted by the DMRS of the NB-PUCCH by using the DCI carried by the NB-PDCCH.
  • FIG. 4 is a block diagram showing the structure of a base station according to an embodiment of the present invention. It will be understood that only the structures associated with the present invention in the base station are shown here to avoid confusion.
  • base station 400 includes a transceiver 401 and a demodulation unit 403 for performing the method 200 as shown in FIG.
  • the transceiver 401 may receive a DMRS of the NB-PUCCH from the UE, where the DMRS is generated by one or more parameters determined by the UE, where the parameters for generating the DMRS include orthogonal cover codes for the tone uplink transmission.
  • the demodulation unit 403 can demodulate the NB-PUCCH according to the received DMRS.
  • the method and apparatus of the present invention have been described above in connection with the preferred embodiments. Those skilled in the art will appreciate that the methods shown above are merely exemplary. The method of the present invention is not limited to the steps and sequences shown above.
  • the network nodes and user equipment shown above may include more modules, for example, may also include modules that may be developed or developed in the future for base stations, MMEs, or UEs, and the like.
  • the various logos shown above are merely exemplary and not limiting, and the invention is not limited to specific cells as examples of such identifications. Many variations and modifications can be made by those skilled in the art in light of the teachings of the illustrated embodiments.
  • the above embodiments of the present invention may be implemented by software, hardware or software and hardware. The combination of the two is achieved.
  • 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.
  • each functional module or individual feature of the base station device and the terminal device used in each of the above embodiments may be implemented or executed by circuitry, typically one or more integrated circuits.
  • Circuitry designed to perform the various functions described in this specification can include general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs) or general purpose integrated circuits, field programmable gate arrays (FPGAs), or others.
  • a general purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine.
  • the above general purpose processor or each circuit may be configured by a digital circuit or may be configured by a logic circuit.
  • the present invention can also use integrated circuits obtained by using the advanced technology.

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Abstract

本发明提供了一种由用户设备UE执行的上行参考信号传输方法，包括：确定一个或多个参数，所述一个或多个参数用于生成窄带物联网上行控制信道NB-PUCCH的解调参考信号DMRS，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列；基于所确定的参数，生成NB-PUCCH的DMRS；以及向基站发送所生成的NB-PUCCH的DMRS。相应地，本发明还提供了由基站执行的上行参考信号接收方法，以及分别执行上述方法的UE和基站。

Description

上行参考信号传输方法和接收方法、以及用户设备和基站 技术领域
本发明涉及无线通信技术领域，更具体地，本发明涉及上行参考信号传输方法和接收方法、以及分别执行上述方法的用户设备和基站。
背景技术
随着移动通信的快速增长和技术的巨大进步，世界将走向一个完全互联互通的网络社会，即任何人或任何东西在任何时间和任何地方都可以获得信息和共享数据。预计到2020年，互联设备的数量将达到500亿部，其中仅有100亿部左右可能是手机和平板电脑，其它的则不是与人对话的机器，而是彼此对话的机器。因此，如何设计系统以更好地支持万物互联是一项需要深入研究的课题。
在第三代合作伙伴计划(3GPP)的长期演进项目(LTE)的标准中，将机器对机器的通信称为机器类型通信(Machine Type Communication，MTC)。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(UE)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。目前的LTE系统主要是针对人与人的通信服务。而实现MTC服务的规模竞争优势及应用前景的关键在于LTE网络支持低成本的MTC设备。
另外，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决定研究附加20dB覆盖增强的MTC设备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设备具有以下特点：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。针对以上MTC特点，LTE网络可以进一步优化一些信令和/或信道用以更好地支持MTC业务。
为此，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-140990 New 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，LTE Rel-13系统需要支持上下行1.4MHz射频带宽的MTC用户设备工作在任意的系统带宽(例如1.4MHz、3MHz、5MHz、10MHz、15MHz、20MHz等等)下。该工作项目标准化将于2015年底结束。
另外，为了更好地实现万物互联，在2015年9月举行的3GPP RAN#69这次全会上，又提出了一个新的工作项目(参见非专利文献：RP-151621 New Work Item：NarrowBand IoT(NB-IoT))，我们称之为窄带物联网(Narrowband Internet of Thing，NB-IoT)。在该项目的描述中，NB-IoT的用户设备(User Equipment，UE)将支持上下行180KHz的射频带宽。在现有的LTE系统中，UE的资源分配的最小粒度为一个物理资源块(Physical Reource Block，PRB)，也就是说现有的LTE系统的物理上行共享信道(Physical Uplink Shared Channel，PUSCH)以及物理上行控制信道(Physical Uplink Control Channel，PUCCH)的资源分配是基于PRB的。而NB-IoT的UE只支持上下行180kHz的射频带宽，即相当于一个PRB大小的射频带宽，它需要更为精确并且颗粒度更小的资源指示方式。
发明内容
本发明主要解决NB-IoT上行传输支持的单音(single-tone)传输和多音(multi-tone)传输场景下，NB-IoT物理上行控制信道(NB-PUCCH)的上行解调参考信号(Demodulation Reference Signal，DMRS)设计及指示的问题。
根据本发明的一方面，提供了一种由用户设备UE执行的上行参考信号传输方法，包括：确定一个或多个参数，所述一个或多个参数用于生成窄带物联网上行控制信道NB-PUCCH的解调参考信号DMRS，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列；基于所确定的参数，生成NB-PUCCH的DMRS；以及向基站发送所生成的NB-PUCCH的DMRS。
在所述方法中，针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
在所述方法中，分配给NB-PDCCH的资源单元的位置是以下之一：
-NB-PDCCH中序号最小的子载波；
-NB-PDCCH中序号最小的增强资源元素组EREG。
在所述方法中，针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
在所述方法中，针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元来确定。
在所述方法中，NB-PUCCH的DMRS所采用的循环移位和/或OCC序列通过分配给NB-PDCCH的音的数目来确定。
在所述方法中，针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
在所述方法中，分配给NB-PDCCH的资源单元的位置是以下之一：
-NB-PDCCH中序号最小的子载波；
-NB-PDCCH中序号最小的第一增强资源元素组EREG。
在所述方法中，针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
根据本发明的另一方面，提供了一种由基站执行的上行参考信号接收方法，包括：从UE接收窄带物联网上行控制信道NB-PUCCH的解调参考信号DMRS，所述DMRS通过UE所确定的一个或多个参数而生成，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列；以及根据接收到的所述DMRS对NB-PUCCH进行解调。
在所述方法中，针对单音上行传输，NB-PUCCH的DMRS所采用的 OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
在所述方法中，分配给NB-PDCCH的资源单元的位置是以下之一：
-NB-PDCCH中序号最小的子载波；
-NB-PDCCH中序号最小的增强资源元素组EREG。
在所述方法中，针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
在所述方法中，针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元来确定。
在所述方法中，NB-PUCCH的DMRS所采用的循环移位和/或OCC序列通过分配给NB-PDCCH的音的数目来确定。
在所述方法中，针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
在所述方法中，分配给NB-PDCCH的资源单元的位置是以下之一：
-NB-PDCCH中序号最小的子载波；
-NB-PDCCH中序号最小的增强资源元素组EREG。
在所述方法中，针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
根据本发明的另一方面，提供了一种用户设备UE，包括：
确定单元，用于确定一个或多个参数，所述一个或多个参数用于生成窄带物联网上行控制信道NB-PUCCH的解调参考信号DMRS，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列；
生成单元，用于基于所确定的参数，生成NB-PUCCH的DMRS；以及
收发机，用于向基站发送所生成的NB-PUCCH的DMRS。
针对单音上行传输，确定单元通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定NB-PUCCH的DMRS所采用的OCC序列。
其中分配给NB-PDCCH的资源单元的位置是以下之一：
-NB-PDCCH中序号最小的子载波；
-NB-PDCCH中序号最小的增强资源元素组EREG。
针对单音上行传输，确定单元通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示NB-PUCCH的DMRS所采用的OCC序列。
针对多音上行传输，确定单元通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元来确定NB-PUCCH的DMRS所采用的循环移位和OCC序列。
确定单元通过分配给NB-PDCCH的音的数目来确定NB-PUCCH的DMRS所采用的循环移位和/或OCC序列。
针对多音上行传输，确定单元通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定NB-PUCCH的DMRS所采用的循环移位和OCC序列。
其中分配给NB-PDCCH的资源单元的位置是以下之一：
-NB-PDCCH中序号最小的子载波；
-NB-PDCCH中序号最小的增强资源元素组EREG。
针对多音上行传输，确定单元通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示NB-PUCCH的DMRS所采用的循环移位和OCC序列。
根据本发明的另一方面，提供了一种基站，包括：
收发机，用于从UE接收窄带物联网上行控制信道NB-PUCCH的解调参考信号DMRS，所述DMRS通过UE所确定的一个或多个参数而生成，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列；以及
解调单元，用于根据接收到的所述DMRS对NB-PUCCH进行解调。
针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
其中分配给NB-PDCCH的资源单元的位置是以下之一：
-NB-PDCCH中序号最小的子载波；
-NB-PDCCH中序号最小的增强资源元素组EREG。
针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元来确定。
NB-PUCCH的DMRS所采用的循环移位和/或OCC序列通过分配给NB-PDCCH的音的数目来确定。
针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
其中分配给NB-PDCCH的资源单元的位置是以下之一：
-NB-PDCCH中序号最小的子载波；
-NB-PDCCH中序号最小的增强资源元素组EREG。
针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
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示意性地示出了根据本发明实施例的由UE执行的上行参考信号传输方法的流程图；
图2示意性地示出了根据本发明实施例的由基站执行的上行参考信号接收方法的流程图；
图3示意性地示出了根据本发明实施例的UE的结构框图；以及
图4示意性地示出了根据本发明实施例的基站的结构框图。
具体实施方式
下面结合附图和具体实施方式对本发明进行详细阐述。应当注意，本发明不应局限于下文所述的具体实施方式。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方式。然而，需要指出的是，本发明不限于以下实施方式，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示意性地示出了根据本发明实施例的由UE执行的上行参考信号传输方法的流程图。如图1所示，方法100包括以下步骤。
步骤S101：UE确定一个或多个参数，所述一个或多个参数用于生成NB-PUCCH的DMRS。对于单音上行传输，生成DMRS的参数包括正交覆盖码(Orthogonal Cover Code，OCC)序列和基序列(Base Sequence)；对于多音上行传输，生成DMRS的参数包括循环移位(Cyclic Shift)，OCC序列和基序列。本发明涉及针对单音上行传输的DMRS所采用的OCC序列的设计，以及针对多音上行传输的DMRS所采用的循环移位和OCC序列的设计。对于基序列，仍沿用现有技术中的设计。
在一个实施例中，对于单音的上行传输，NB-PUCCH的DMRS采用的OCC序列由分配给NB-IoT物理下行控制信道(NB-PDCCH)的资源单元的位置指示来确定。
■在一种实施方式中，分配给NB-PDCCH的资源单元的位置指示是分配给NB-PDCCH的资源单元中的第一个子载波的序号，即序号最小的子载波所对应的序号。
■在另一实施方式中，分配给NB-PDCCH的资源单元的位置指示是分配给NB-PDCCH的资源单元中的第一个增强资源元素组(Enhanced Resource Element Group，EREG)的序号，即序号最小的EREG所对应的序号。
在另一实施例中，对于单音的上行传输，NB-PUCCH的DMRS采用的OCC序列由NB-PDCCH所承载的下行链路控制信息(DCI)来指示。
其中，DCI可以是一个位串(bitstring)。
比如，若位串的长度为1，则
位串为0，表示NB-PUCCH的DMRS采用序号为1的OCC序列。
位串为1，表示NB-PUCCH的DMRS采用序号为2的OCC序列。
比如，若位串的长度为2，则
位串为00，表示NB-PUCCH的DMRS采用序号为1的OCC序列。
位串为01，表示NB-PUCCH的DMRS采用序号为2的OCC序列。
位串为10，表示NB-PUCCH的DMRS采用序号为3的OCC序列。
位串为11，表示NB-PUCCH的DMRS采用序号为4的OCC序列。
比如，若位串的长度为3，则
位串为000，表示NB-PUCCH的DMRS采用序号为1的OCC序列。
位串为001，表示NB-PUCCH的DMRS采用序号为2的OCC序列。
位串为010，表示NB-PUCCH的DMRS采用序号为3的OCC序列。
位串为011，表示NB-PUCCH的DMRS采用序号为4的OCC序列。
位串为100，表示NB-PUCCH的DMRS采用序号为5的OCC序列。
位串为101，表示NB-PUCCH的DMRS采用序号为6的OCC序列。
位串为110，表示NB-PUCCH的DMRS采用序号为7的OCC序列。
位串为111，表示NB-PUCCH的DMRS采用序号为8的OCC序列。
比如，若位串的长度为4，则
位串为0000，表示NB-PUCCH的DMRS采用序号为1的OCC序列。
位串为0001，表示NB-PUCCH的DMRS采用序号为2的OCC序列。
位串为0010，表示NB-PUCCH的DMRS采用序号为3的OCC序列。
位串为0011，表示NB-PUCCH的DMRS采用序号为4的OCC序列。
位串为0100，表示NB-PUCCH的DMRS采用序号为5的OCC序列。
位串为0101，表示NB-PUCCH的DMRS采用序号为6的OCC序列。
位串为0110，表示NB-PUCCH的DMRS采用序号为7的OCC序列。
位串为0111，表示NB-PUCCH的DMRS采用序号为8的OCC序列。
位串为1000，表示NB-PUCCH的DMRS采用序号为9的OCC序列。
位串为1001，表示NB-PUCCH的DMRS采用序号为10的OCC序列。
位串为1010，表示NB-PUCCH的DMRS采用序号为11的OCC序列。
位串为1011，表示NB-PUCCH的DMRS采用序号为12的OCC序列。
位串为1100，表示NB-PUCCH的DMRS采用序号为13的OCC序列。
位串为1101，表示NB-PUCCH的DMRS采用序号为14的OCC序列。
位串为1110，表示NB-PUCCH的DMRS采用序号为15的OCC序列。
位串为1111，表示NB-PUCCH的DMRS采用序号为16的OCC序列。
在一个实施例中，对于多音上行传输，UE所支持的NB-PUCCH的DMRS所采用的循环移位和OCC序列的集合通过分配给NB-PDCCH的资源单元来确定。具体地，
■在一种实施方式中，UE所支持的的循环移位和OCC序列的集合由分配给NB-PDCCH的子载波或音(tone)的数目决定；
■在另一实施方式中，所述UE可以支持的循环移位由分配给NB-PDCCH的子载波或音的数目决定；
■在又一实施方式中，所述UE可以支持的OCC序列由分配给NB-PDCCH的子载波或音的数目决定。
在另一实施例中，对于多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列由分配给NB-PDCCH的资源单元的位置指示来确定。
■在一种实施方式中，分配给NB-PDCCH的资源单元的位置指示是分配给NB-PDCCH的资源单元中的第一个子载波的序号，即序号最小的子载波所对应的序号，其唯一对应着一个OCC序列和循环移位。
■在另一实施方式中，分配给NB-PDCCH的资源单元的位置指示是分配给NB-PDCCH的资源单元中的第一个EREG的序号，即序号最小的EREG所对应的序号，其唯一对应着一个OCC序列和循环移位。
在另一实施例中，对于多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列由NB-PDCCH所承载的DCI指示。
其中，DCI可以是一个位串，
比如，若位串的长度为1，则
位串为0，表示NB-PUCCH的DMRS采用序号为1的OCC序列，同时采用序号为1的循环移位序列。
位串为1，表示NB-PUCCH的DMRS采用序号为2的OCC序列，同 时采用序号为2的循环移位序列。
比如，若位串的长度为2，则
位串为00，表示NB-PUCCH的DMRS采用序号为1的OCC序列，同时采用序号为1的循环移位序列。
位串为01，表示NB-PUCCH的DMRS采用序号为2的OCC序列，同时采用序号为2的循环移位序列。
位串为10，表示NB-PUCCH的DMRS采用序号为3的OCC序列，同时采用序号为3的循环移位序列。
位串为11，表示NB-PUCCH的DMRS采用序号为4的OCC序列，同时采用序号为4的循环移位序列。
比如，若位串的长度为3，则
位串为000，表示NB-PUCCH的DMRS采用序号为1的OCC序列，同时采用序号为1的循环移位序列。
位串为001，表示NB-PUCCH的DMRS采用序号为2的OCC序列，同时采用序号为2的循环移位序列。
位串为010，表示NB-PUCCH的DMRS采用序号为3的OCC序列，同时采用序号为3的循环移位序列。
位串为011，表示NB-PUCCH的DMRS采用序号为4的OCC序列，同时采用序号为4的循环移位序列。
位串为100，表示NB-PUCCH的DMRS采用序号为5的OCC序列，同时采用序号为5的循环移位序列。
位串为101，表示NB-PUCCH的DMRS采用序号为6的OCC序列，同时采用序号为6的循环移位序列。
位串为110，表示NB-PUCCH的DMRS采用序号为7的OCC序列，同时采用序号为7的循环移位序列。
位串为111，表示NB-PUCCH的DMRS采用序号为8的OCC序列，同时采用序号为8的循环移位序列。
比如，若位串的长度为4，则
位串为0000，表示NB-PUCCH的DMRS采用序号为1的OCC序列，同时采用序号为1的循环移位序列。
位串为0001，表示NB-PUCCH的DMRS采用序号为2的OCC序列，同时采用序号为2的循环移位序列。
位串为0010，表示NB-PUCCH的DMRS采用序号为3的OCC序列，同时采用序号为3的循环移位序列。
位串为0011，表示NB-PUCCH的DMRS采用序号为4的OCC序列，同时采用序号为4的循环移位序列。
位串为0100，表示NB-PUCCH的DMRS采用序号为5的OCC序列，同时采用序号为5的循环移位序列。
位串为0101，表示NB-PUCCH的DMRS采用序号为6的OCC序列，同时采用序号为6的循环移位序列。
位串为0110，表示NB-PUCCH的DMRS采用序号为7的OCC序列，同时采用序号为7的循环移位序列。
位串为0111，表示NB-PUCCH的DMRS采用序号为8的OCC序列，同时采用序号为8的循环移位序列。
位串为1000，表示NB-PUCCH的DMRS采用序号为9的OCC序列，同时采用序号为9的循环移位序列。
位串为1001，表示NB-PUCCH的DMRS采用序号为10的OCC序列，同时采用序号为10的循环移位序列。
位串为1010，表示NB-PUCCH的DMRS采用序号为11的OCC序列，同时采用序号为11的循环移位序列。
位串为1011，表示NB-PUCCH的DMRS采用序号为12的OCC序列，同时采用序号为12的循环移位序列。
位串为1100，表示NB-PUCCH的DMRS采用序号为13的OCC序列，同时采用序号为13的循环移位序列。
位串为1101，表示NB-PUCCH的DMRS采用序号为14的OCC序列，同时采用序号为14的循环移位序列。
位串为1110，表示NB-PUCCH的DMRS采用序号为15的OCC序列，同时采用序号为15的循环移位序列。
位串为1111，表示NB-PUCCH的DMRS采用序号为16的OCC序列， 同时采用序号为16的循环移位序列。
步骤S103：UE基于所确定的参数，生成NB-PUCCH的DMRS。
步骤S105：UE向基站发送所生成的NB-PUCCH的DMRS。
图2示意性地示出了根据本发明实施例的由基站执行的上行参考信号接收方法的流程图。如图2所示，方法200包括以下步骤。
步骤S201：基站从UE接收NB-PUCCH的DMRS，所述DMRS通过UE所确定的一个或多个参数而生成，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列；以及
步骤S203：基站根据接收到的NB-PUCCH的DMRS对NB-PUCCH进行解调。
图3示意性地示出了根据本发明实施例的UE的结构框图。可以理解，在此仅示出UE中与本发明相关的结构，以避免混淆。
如图3所示，UE 300包括确定单元301、生成单元303和收发机305，用于执行如图1所示的方法100。
确定单元301确定一个或多个参数，所述一个或多个参数用于生成NB-PUCCH的DMRS，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列。
生成单元303基于所确定的参数来生成NB-PUCCH的DMRS。
收发机305向基站发送所生成的NB-PUCCH的DMRS。
在一个实施例中，针对单音上行传输，确定单元301可以通过分配给NB-PDCCH的资源单元的位置来确定NB-PUCCH的DMRS所采用的OCC序列。
例如，分配给NB-PDCCH的资源单元的位置可以是以下之一：
-NB-PDCCH的第一子载波，即序号最小的子载波；
-NB-PDCCH的第一EREG，即序号最小的EREG。
在另一实施例中，针对单音上行传输，确定单元301可以通过NB-PDCCH所承载的DCI来指示NB-PUCCH的DMRS所采用的OCC序列。
在另一实施例中，针对多音上行传输，确定单元301可以通过分配给NB-PDCCH的资源单元来确定NB-PUCCH的DMRS所采用的循环移位和OCC序列。具体地，确定单元301可以通过分配给NB-PDCCH的子载波或音的数目来确定NB-PUCCH的DMRS所采用的循环移位和/或OCC序列。
在另一实施例中，针对多音上行传输，确定单元301可以通过分配给NB-PDCCH的资源单元的位置来确定NB-PUCCH的DMRS所采用的循环移位和OCC序列。
例如，分配给NB-PDCCH的资源单元的位置是以下之一：
-NB-PDCCH的第一子载波，即序号最小的子载波；
-NB-PDCCH的第一EREG，即序号最小的EREG。
在另一实施例中，针对多音上行传输，确定单元301可以通过NB-PDCCH所承载的DCI来指示NB-PUCCH的DMRS所采用的循环移位和OCC序列。
图4示意性地示出了根据本发明实施例的基站的结构框图。可以理解，在此仅示出基站中与本发明相关的结构，以避免混淆。
如图4所示，基站400包括收发机401和解调单元403，用于执行如图2所示的方法200。
具体地，收发机401可以从UE接收NB-PUCCH的DMRS，所述DMRS通过UE所确定的一个或多个参数而生成，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列。
解调单元403可以根据接收到的所述DMRS对NB-PUCCH进行解调。
上文已经结合优选实施例对本发明的方法和涉及的设备进行了描述。本领域技术人员可以理解，上面示出的方法仅是示例性的。本发明的方法并不局限于上面示出的步骤和顺序。上面示出的网络节点和用户设备可以包括更多的模块，例如还可以包括可以开发的或者将来开发的可用于基站、MME、或UE的模块等等。上文中示出的各种标识仅是示例性的而不是限制性的，本发明并不局限于作为这些标识的示例的具体信元。本领域技术人员根据所示实施例的教导可以进行许多变化和修改。
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。
此外，上述每个实施例中所使用的基站设备和终端设备的每个功能模块或各个特征可以由电路实现或执行，所述电路通常为一个或多个集成电路。设计用于执行本说明书中所描述的各个功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)或通用集成电路、现场可编程门阵列(FPGA)或其他可编程逻辑器件、分立的门或晶体管逻辑、或分立的硬件组件、或以上器件的任意组合。通用处理器可以是微处理器，或者所述处理器可以是现有的处理器、控制器、微控制器或状态机。上述通用处理器或每个电路可以由数字电路配置，或者可以由逻辑电路配置。此外，当由于半导体技术的进步，出现了能够替代目前的集成电路的先进技术时，本发明也可以使用利用该先进技术得到的集成电路。
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 (36)

  1. 一种由用户设备UE执行的上行参考信号传输方法，包括：
    确定一个或多个参数，所述一个或多个参数用于生成窄带物联网上行控制信道NB-PUCCH的解调参考信号DMRS，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列；
    基于所确定的参数，生成NB-PUCCH的DMRS；以及
    向基站发送所生成的NB-PUCCH的DMRS。
  2. 根据权利要求1所述的上行参考信号传输方法，其中
    针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
  3. 根据权利要求2所述的上行参考信号传输方法，其中
    分配给NB-PDCCH的资源单元的位置是以下之一：
    -NB-PDCCH中序号最小的子载波；
    -NB-PDCCH中序号最小的增强资源元素组EREG。
  4. 根据权利要求1所述的上行参考信号传输方法，其中
    针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
  5. 根据权利要求1所述的上行参考信号传输方法，其中
    针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元来确定。
  6. 根据权利要求5所述的上行参考信号传输方法，其中
    NB-PUCCH的DMRS所采用的循环移位和/或OCC序列通过分配给NB-PDCCH的音的数目来确定。
  7. 根据权利要求1所述的上行参考信号传输方法，其中
    针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
  8. 根据权利要求7所述的上行参考信号传输方法，其中
    分配给NB-PDCCH的资源单元的位置是以下之一：
    -NB-PDCCH中序号最小的子载波；
    -NB-PDCCH中序号最小的第一增强资源元素组EREG。
  9. 根据权利要求1所述的上行参考信号传输方法，其中
    针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
  10. 一种由基站执行的上行参考信号接收方法，包括：
    从UE接收窄带物联网上行控制信道NB-PUCCH的解调参考信号DMRS，所述DMRS通过UE所确定的一个或多个参数而生成，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列；以及
    根据接收到的所述DMRS对NB-PUCCH进行解调。
  11. 根据权利要求10所述的上行参考信号接收方法，其中
    针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
  12. 根据权利要求11所述的上行参考信号接收方法，其中
    分配给NB-PDCCH的资源单元的位置是以下之一：
    -NB-PDCCH中序号最小的子载波；
    -NB-PDCCH中序号最小的增强资源元素组EREG。
  13. 根据权利要求10所述的上行参考信号接收方法，其中
    针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
  14. 根据权利要求10所述的上行参考信号接收方法，其中
    针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元来确定。
  15. 根据权利要求14所述的上行参考信号接收方法，其中
    NB-PUCCH的DMRS所采用的循环移位和/或OCC序列通过分配给NB-PDCCH的音的数目来确定。
  16. 根据权利要求10所述的上行参考信号接收方法，其中
    针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
  17. 根据权利要求16所述的上行参考信号接收方法，其中
    分配给NB-PDCCH的资源单元的位置是以下之一：
    -NB-PDCCH中序号最小的子载波；
    -NB-PDCCH中序号最小的增强资源元素组EREG。
  18. 根据权利要求10所述的上行参考信号接收方法，其中
    针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
  19. 一种用户设备UE，包括：
    确定单元，用于确定一个或多个参数，所述一个或多个参数用于生成窄带物联网上行控制信道NB-PUCCH的解调参考信号DMRS，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列；
    生成单元，用于基于所确定的参数，生成NB-PUCCH的DMRS；以及
    收发机，用于向基站发送所生成的NB-PUCCH的DMRS。
  20. 根据权利要求19所述的UE，其中
    针对单音上行传输，确定单元通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定NB-PUCCH的DMRS所采用的OCC序列。
  21. 根据权利要求20所述的UE，其中
    分配给NB-PDCCH的资源单元的位置是以下之一：
    -NB-PDCCH中序号最小的子载波；
    -NB-PDCCH中序号最小的增强资源元素组EREG。
  22. 根据权利要求19所述的UE，其中
    针对单音上行传输，确定单元通过窄带物联网下行控制信道 NB-PDCCH所承载的下行链路控制信息来指示NB-PUCCH的DMRS所采用的OCC序列。
  23. 根据权利要求19所述的UE，其中
    针对多音上行传输，确定单元通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元来确定NB-PUCCH的DMRS所采用的循环移位和OCC序列。
  24. 根据权利要求23所述的UE，其中
    确定单元通过分配给NB-PDCCH的音的数目来确定NB-PUCCH的DMRS所采用的循环移位和/或OCC序列。
  25. 根据权利要求19所述的UE，其中
    针对多音上行传输，确定单元通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定NB-PUCCH的DMRS所采用的循环移位和OCC序列。
  26. 根据权利要求25所述的UE，其中
    分配给NB-PDCCH的资源单元的位置是以下之一：
    -NB-PDCCH中序号最小的子载波；
    -NB-PDCCH中序号最小的增强资源元素组EREG。
  27. 根据权利要求19所述的UE，其中
    针对多音上行传输，确定单元通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示NB-PUCCH的DMRS所采用的循环移位和OCC序列。
  28. 一种基站，包括：
    收发机，用于从UE接收窄带物联网上行控制信道NB-PUCCH的解调参考信号DMRS，所述DMRS通过UE所确定的一个或多个参数而生成，其中针对单音上行传输，用于生成DMRS的参数包括正交覆盖码OCC序列和基序列；以及针对多音上行传输，用于生成DMRS的参数包括循环移位、OCC序列和基序列；以及
    解调单元，用于根据接收到的所述DMRS对NB-PUCCH进行解调。
  29. 根据权利要求28所述的基站，其中
    针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过分 配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
  30. 根据权利要求29所述的基站，其中
    分配给NB-PDCCH的资源单元的位置是以下之一：
    -NB-PDCCH中序号最小的子载波；
    -NB-PDCCH中序号最小的增强资源元素组EREG。
  31. 根据权利要求28所述的基站，其中
    针对单音上行传输，NB-PUCCH的DMRS所采用的OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
  32. 根据权利要求28所述的基站，其中
    针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元来确定。
  33. 根据权利要求32所述的基站，其中
    NB-PUCCH的DMRS所采用的循环移位和/或OCC序列通过分配给NB-PDCCH的音的数目来确定。
  34. 根据权利要求28所述的基站，其中
    针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过分配给窄带物联网下行控制信道NB-PDCCH的资源单元的位置来确定。
  35. 根据权利要求34所述的基站，其中
    分配给NB-PDCCH的资源单元的位置是以下之一：
    -NB-PDCCH中序号最小的子载波；
    -NB-PDCCH中序号最小的增强资源元素组EREG。
  36. 根据权利要求28所述的基站，其中
    针对多音上行传输，NB-PUCCH的DMRS所采用的循环移位和OCC序列通过窄带物联网下行控制信道NB-PDCCH所承载的下行链路控制信息来指示。
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