WO2018171772A1 - 下行控制信道的传输方法、装置、基站和用户设备 - Google Patents

下行控制信道的传输方法、装置、基站和用户设备 Download PDF

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Publication number
WO2018171772A1
WO2018171772A1 PCT/CN2018/080360 CN2018080360W WO2018171772A1 WO 2018171772 A1 WO2018171772 A1 WO 2018171772A1 CN 2018080360 W CN2018080360 W CN 2018080360W WO 2018171772 A1 WO2018171772 A1 WO 2018171772A1
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Prior art keywords
signal
sequence
subframe
index
pdcch
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PCT/CN2018/080360
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English (en)
French (fr)
Inventor
杨维维
戴博
陈宪明
刘锟
方惠英
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中兴通讯股份有限公司
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Publication of WO2018171772A1 publication Critical patent/WO2018171772A1/zh

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    • 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
    • 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), DMT
    • 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 signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a method, an apparatus, a base station, a user equipment (UE), and a storage medium for transmitting a downlink control channel.
  • UE user equipment
  • Machine Type Communications also known as Machine to Machine (M2M)
  • MTC Machine Type Communications
  • M2M Machine to Machine
  • GSM Global System of Mobile communication
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • MTC multi-class data services based on LTE/LTE-A will also be more attractive.
  • C-IOT Comb-Internet Of Things
  • 3GPP 3rd Generation Partnership Project
  • TR45.820V200 Technical Report TR45.820V200
  • NB-IOT Narrow Bang-Internet Of Things
  • the NB-IOT system focuses on low-complexity and low-throughput RF access technologies.
  • the main research objectives include: improved indoor coverage, support for massive low-throughput user equipment, low latency sensitivity, and ultra-low equipment cost. , low device power loss and network architecture.
  • the network can send pages to idle and connected UEs.
  • the paging process may be triggered by the core network to notify a certain UE to receive the paging request, or may be triggered by the eNB to notify the system information of the update.
  • the paging message is scheduled by a physical downlink control channel (PDCCH) that is scrambled by a P-Radio Network Temporary Identifier (RNTI), and is transmitted in a Physical Downlink Shared Channel (PDSCH).
  • PDCCH physical downlink control channel
  • RNTI P-Radio Network Temporary Identifier
  • PDSCH Physical Downlink Shared Channel
  • the terminal detects the corresponding PDCCH at the paging time (Paging Occasion, PO), so as to determine whether the PDSCH indicated by the PDCCH carries a paging message.
  • the terminal does not detect the corresponding PDCCH in the PO, it indicates that the PO is not found in the PO.
  • the terminal is in a sleep state and does not receive data until the next PO is detected again, that is, the terminal needs to perform blind detection of the PDCCH at each PO.
  • the machine type communication physical downlink control channel MPDCCH MTC PDCCH, MPDCCH
  • NPDCCH narrowband physical downlink control channel
  • the embodiments of the present disclosure provide a method, an apparatus, a base station, a UE, and a storage medium for transmitting a downlink control channel.
  • a method for transmitting a downlink control channel including:
  • the base station After transmitting the first signal, the base station sends the PDCCH corresponding to the first signal to the UE.
  • a method for transmitting a downlink control channel includes:
  • the UE detects, according to the configuration information of the first signal, the first signal corresponding to the UE that is sent by the base station;
  • the UE When detecting the corresponding first signal, the UE detects the PDCCH corresponding to the first signal.
  • a transmission apparatus for a downlink control channel which is applied to a base station side, and includes:
  • the first processing module is configured to send the first signal to one or more UEs according to the configuration information of the first signal
  • the second processing module is configured to: after the first processing module sends the first signal, send the PDCCH corresponding to the first signal to the UE.
  • a transmission apparatus for a downlink control channel which is applied to a UE side, and includes:
  • the signal receiving module is configured to detect, according to the configuration information of the first signal, the first signal corresponding to the UE sent by the base station;
  • the signal detecting module is configured to detect the PDCCH corresponding to the first signal when the corresponding first signal is detected.
  • a base station includes: a first memory and a first processor, wherein the first memory stores computer instructions, and the first processor executes the computer instructions To achieve the following methods:
  • the PDCCH corresponding to the first signal is sent to the UE.
  • a UE including: a second memory and a second processor, wherein the second memory stores computer instructions, and the second processor executes the computer instructions To achieve the following methods:
  • a storage medium having stored thereon computer instructions for performing the steps of the base station side method when the computer instructions are executed by a processor.
  • a storage medium having stored thereon computer instructions, the steps of the UE side method described above when the computer instructions are executed by a processor.
  • the embodiment of the present disclosure provides a downlink control channel transmission and reception scheme. For the UE, only the first signal sent by the base station to the local UE is detected, and the PDCCH is blindly detected. The signal allows the terminal to obtain downstream information with lower power consumption.
  • FIG. 1 is a flowchart of a method for transmitting a downlink control channel according to a first embodiment of the present disclosure
  • FIG. 2 is a flowchart of a method for transmitting a downlink control channel according to a second embodiment of the present disclosure
  • FIG. 3 is a flowchart of a method for transmitting a downlink control channel according to a third embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a subframe in which a first signal is located in a third embodiment of the present disclosure
  • 5 to 8 are schematic diagrams showing a subframe in which a first signal is located in a fourth embodiment of the present disclosure
  • FIG. 9 is a structural block diagram of a transmission apparatus of a downlink control channel according to a twelfth embodiment of the present disclosure.
  • FIG. 10 is a structural block diagram of a transmission apparatus of a downlink control channel according to a thirteenth embodiment of the present disclosure.
  • FIG. 11 is a structural block diagram of a base station according to a fourteenth embodiment of the present disclosure.
  • FIG. 12 is a structural block diagram of a UE according to a fifteenth embodiment of the present disclosure.
  • the embodiment of the present disclosure provides a method, an apparatus, a base station, a UE, and a storage medium for transmitting a downlink control channel.
  • the downlink control channel that is, the PDCCH, which is mentioned in the embodiment of the present disclosure, is used to carry downlink control information, and is used in the NB-IoT system.
  • the downlink control channel is the MPDCCH.
  • the downlink control channel is the MPDCCH.
  • the downlink control channel is the NR-PDCCH. Regardless of any system, any control channel used to carry the downlink control information belongs to the scope of the present disclosure. .
  • the implementation process of the present disclosure will be described in detail below through several specific embodiments.
  • a method for transmitting a downlink control channel includes the following steps:
  • Step S101 The base station sends a first signal to one or more UEs according to the configuration information of the first signal.
  • Step S102 After transmitting the first signal, the base station sends the PDCCH corresponding to the first signal to the UE.
  • the configuration information of the first signal includes at least one of a time domain position of the first signal, a frequency domain position of the first signal, and a signal type of the first signal.
  • the time domain location of the first signal includes at least one of the following: a subframe in which the first signal is located and an Orthogonal Frequency Division Multiplexing (OFDM) where the first signal is located. symbol.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the OFDM symbol in which the first signal is located includes: the third OFDM symbol and/or the fourth OFDM symbol in the subframe, or the subframe starts from the gth OFDM symbol to the end of the subframe, where the value of g is High-level signaling configuration.
  • the subframe in which the first signal is located is determined according to at least one of the following manners:
  • Manner 1 determining a subframe in which the first signal is located according to a period and/or an offset of the first signal indicated by the signaling;
  • Manner 2 determining, according to a starting position of a search space corresponding to the PDCCH, a subframe in which the first signal is located;
  • determining, according to the start position of the search space corresponding to the PDCCH, the subframe in which the first signal is located is a subframe ⁇ nk 0 , nk 1 , . . . , nk X-1 ⁇ , where n is The starting subframe of the search space corresponding to the PDCCH.
  • Manner 3 determining, according to a starting position of the repetition number corresponding to the PDCCH, a subframe in which the first signal is located;
  • the subframe where the first signal is located is determined to be a subframe ⁇ mk 0 , mk 1 , . . . , mk X-1 ⁇ according to a starting position of the number of repetitions corresponding to the PDCCH;
  • the number of repetitions corresponding to the PDCCH is ⁇ 1, 2, . . . , Rmax ⁇ .
  • Manner 4 determining, according to a starting position of the PDCCH, a subframe in which the first signal is located as a subframe ⁇ hk 0 , hk 1 , . . . , hk X-1 ⁇ ; h is a PDCCH starting subframe.
  • the values of k 0 , k 1 , . . . , k X-1 are values pre-agreed by the base station and the UE, or are values indicated by signaling; the value of X is related to one or more of the following parameters: The coverage level of the terminal, the maximum value Rmax of the repetition number corresponding to the PDCCH, and the period of the search space corresponding to the PDCCCH.
  • the signal type of the first signal includes at least one of the following: a sequence corresponding to the first signal and sequence configuration information;
  • the sequence corresponding to the first signal is one or more of a Walsh sequence, a ZC sequence, a pseudorandom noise (PN) sequence, and a computer search sequence (CGS).
  • PN pseudorandom noise
  • CCS computer search sequence
  • the sequence configuration information when the sequence corresponding to the first signal includes the ZC sequence, includes: a ZC sequence length, a root sequence of the ZC sequence, a cyclic shift value corresponding to the ZC sequence, and a cycle of the ZC sequence. The way the shift interval value is determined.
  • the length of the ZC sequence is determined according to the number of frequency domain subcarriers corresponding to the first signal, or according to the number of frequency domain subcarriers and the number of time domain OFDM symbols corresponding to the first signal;
  • the cyclic shift interval value of the ZC sequence is configured according to a higher layer signaling configuration
  • the root sequence of the ZC sequence is determined according to the cell index
  • the cyclic shift value corresponding to the ZC sequence is determined according to one or more of the following information: a cell index, a terminal index, an offset value indicated by the high layer signaling, an index of the subframe where the first signal is located, and a time slot in which the first signal is located. Index, index of the OFDM symbol where the first signal is located.
  • the sequence configuration information when the sequence corresponding to the first signal includes the CGS, includes: a sequence length, a cyclic shift value corresponding to the CGS, and a determination manner of the cyclic shift interval value corresponding to the CGS.
  • the CGS length is determined according to the number of frequency domain subcarriers corresponding to the first signal, or according to the number of frequency domain subcarriers and the number of time domain OFDM symbols corresponding to the first signal;
  • the cyclic shift value corresponding to the CGS is determined according to one or more of the following information: a cell index, a terminal index, an offset value indicated by the high layer signaling, an index of the subframe in which the first signal is located, and an index of the time slot in which the first signal is located. An index of the OFDM symbol in which the first signal is located;
  • the cyclic shift interval value corresponding to the CGS is configured according to the higher layer signaling configuration.
  • the sequence configuration information when the sequence corresponding to the first signal includes a Walsh sequence, includes: a Walsh sequence length and a determination manner of an index of the Walsh sequence.
  • the length of the Walsh sequence is determined according to the number of time domain OFDM symbols corresponding to the first signal
  • the index of the Walsh sequence may be determined according to one or more of the following information: a cell index, a terminal index, a value indicated by the signaling, a subframe index in which the first signal is located, and an index of the OFDM symbol in which the first signal is located.
  • the sequence configuration information includes: the initial value of the PN sequence is determined according to the cell index.
  • the frequency domain location of the first signal includes at least one of the following: a narrowband index where the first signal is located and a resource block index where the first signal is located.
  • the number of subcarriers occupied by the first signal is obtained according to the frequency domain position of the first signal, and when the frequency domain position of the first signal is a narrowband index where the first signal is located, the number of subcarriers is a narrowband corresponding to The number of subcarriers, the frequency domain position of the first signal is the resource block index of the first signal, and the number of subcarriers is the number of subcarriers corresponding to the resource block.
  • the narrowband index where the first signal is located and/or the resource block index where the first signal is located is indicated by the high layer signaling.
  • the base station when the first mode of the high layer signaling is enabled, the base station sends the PDCCH corresponding to the first signal to the UE after sending the first signal, otherwise the base station Sending the PDCCH directly; or, when the high layer signaling indicates the first mode, the base station sends the PDCCH corresponding to the first signal to the UE after sending the first signal; when the high layer signaling indicates the second mode, the base station Sending the PDCCH directly; or, after t1 milliseconds in the t millisecond period, the base station sends the PDCCH corresponding to the first signal to the UE after transmitting the first signal, and the base station directly at other times in the t millisecond period The PDCCH is transmitted.
  • the method in the embodiment of the present disclosure provides a first signal transmission scheme.
  • the base station sends the first signal by using the scheme
  • the terminal can obtain the downlink control channel by using lower power consumption.
  • a method for transmitting a downlink control channel includes the following steps:
  • Step S201 the UE detects, according to the configuration information of the first signal, the first signal corresponding to the local UE that is sent by the base station;
  • Step S202 When detecting the corresponding first signal, the UE detects the physical downlink control channel PDCCH corresponding to the first signal.
  • the configuration information of the first signal includes at least one of a time domain position of the first signal, a frequency domain position of the first signal, and a signal type of the first signal.
  • the UE detects the first signal corresponding to the local UE that is sent by the base station according to the configuration information of the first signal, and includes:
  • receiving the first signal sent by the base station according to the time domain location and the frequency domain location of the first signal including:
  • the frequency domain location information may be obtained by using high layer signaling.
  • determining that the OFDM symbol where the first signal is located is: the third OFDM symbol and/or the fourth OFDM symbol in the subframe, or the subframe starts from the gth OFDM symbol to the sub-frame.
  • the manner of determining the subframe where the first signal is located includes, but is not limited to:
  • Manner 1 determining a subframe in which the first signal is located according to a period and/or an offset of the first signal indicated by the signaling;
  • Manner 2 determining, according to a starting position of a search space corresponding to the PDCCH, a subframe in which the first signal is located;
  • the subframe in which the first signal is located is determined to be a subframe ⁇ nk 0 , nk 1 , . . . , nk X-1 ⁇ according to a search space start position corresponding to the PDCCH.
  • n is the starting subframe of the search space corresponding to the PDCCH.
  • Manner 3 determining, according to a starting position of the repetition number corresponding to the PDCCH, a subframe in which the first signal is located;
  • the subframe in which the first signal is located is determined to be a subframe ⁇ mk 0 , mk 1 , . . . , mk X-1 ⁇ according to a starting position of the number of repetitions corresponding to the PDCCH, where m For the starting subframe of the repetition number corresponding to the PDCCH, the number of repetitions corresponding to the PDCCH is ⁇ 1, 2, . . . , Rmax ⁇ .
  • Manner 4 determining, according to a starting position of the PDCCH, a subframe in which the first signal is located as a subframe ⁇ hk 0 , hk 1 , . . . , hk X-1 ⁇ ; h is a PDCCH starting subframe;
  • the values of k 0 , k 1 , ..., k X-1 are values pre-agreed by the base station and the UE, or are values indicated by the signaling; the value of X is related to one or more of the following parameters: The coverage level, the maximum value Rmax of the repetition number corresponding to the PDCCH, and the period of the search space corresponding to the PDCCCH.
  • the signal type of the first signal includes at least one of the following: a sequence corresponding to the first signal and sequence configuration information.
  • the sequence corresponding to the first signal is one or more of the following sequences: a Walsh sequence, a ZC sequence, a PN sequence, and a CGS.
  • the sequence configuration information when the sequence corresponding to the first signal includes the ZC sequence, includes: a ZC sequence length, a root sequence of the ZC sequence, a cyclic shift value corresponding to the ZC sequence, and a cycle of the ZC sequence. The way the shift interval value is determined.
  • determining the length of the ZC sequence, the root sequence of the ZC sequence, the cyclic shift value corresponding to the ZC sequence, and the cyclic shift interval value of the ZC sequence include:
  • the root sequence of the ZC sequence is obtained according to the cell index
  • the cyclic shift value of the ZC sequence is determined according to at least one of the following: a cell index, an index of the UE, an offset value indicated by the high layer signaling, an index of the subframe in which the first signal is located, and an index of the time slot in which the first signal is located, first The index of the OFDM symbol where the signal is located;
  • the cyclic shift interval is obtained according to the high layer signaling.
  • the first signal is obtained, including:
  • the first signal is obtained according to the length of the ZC sequence, the root sequence of the ZC sequence, the cyclic shift value corresponding to the ZC sequence, and the cyclic shift interval value of the ZC sequence.
  • the sequence configuration information when the sequence corresponding to the first signal includes the CGS, includes: a sequence length, a cyclic shift value corresponding to the CGS, and a determination manner of the cyclic shift interval value corresponding to the CGS.
  • the manner of determining the sequence length, the cyclic shift value corresponding to the CGS, and the cyclic shift interval value corresponding to the CGS includes:
  • the cyclic shift value is determined according to at least one of the following: an index of the cell, an index of the UE, an offset value indicated by the high layer signaling, an index of the subframe in which the first signal is located, an index of the time slot in which the first signal is located, and the first signal is located The index of the OFDM symbol;
  • the cyclic shift interval is obtained according to the high layer signaling.
  • the first signal is obtained, including:
  • the first signal is obtained according to the sequence length of the CGS, the cyclic shift value corresponding to the CGS, and the cyclic shift interval value of the CGS.
  • the sequence configuration information when the sequence corresponding to the first signal includes a Walsh sequence, includes: a Walsh sequence length and a determination manner of an index of the Walsh sequence.
  • the length of the Walsh sequence is determined according to the number of time domain OFDM symbols corresponding to the first signal
  • an index of the Walsh sequence is obtained.
  • the first signal is obtained, including:
  • a first signal is obtained based on the length and index of the Walsh sequence.
  • the sequence configuration information includes: the initial value of the PN sequence is determined according to the cell index.
  • the terminal when the low power mode of the high layer signaling is enabled, the terminal first detects the first signal, and then detects the corresponding PDCCH, otherwise directly detects the PDCCH; or when the high layer signaling indicates low power consumption. In the mode, the terminal first detects the first signal and then detects the corresponding PDCCH; when the high layer signaling indicates the normal mode, the terminal directly detects the PDCCH; or, in t1 milliseconds in the t millisecond period, the terminal first detects the first signal, and then detects the corresponding PDCCH; the terminal directly detects the PDCCH at other times within the t millisecond period.
  • the method of the embodiment of the present disclosure for the UE, only detects the first signal sent by the base station to the UE, and performs blind detection of the PDCCH. It can be seen that the present disclosure can introduce the first signal.
  • the low power consumption terminal or the UE in the low power mode is further reduced in power consumption.
  • a method for transmitting a downlink control channel includes the following steps:
  • Step S301 the base station determines, according to the frequency domain location of the first signal, a narrowband index where the first signal is located and a resource block index where the first signal is located;
  • Step S302 the base station determines, according to the time domain location of the first signal, the subframe where the first signal is located and the OFDM symbol where the first signal is located;
  • the time domain location of the first signal indicates how the base station determines the subframe in which the first signal is located and the OFDM symbol in which the first signal is located.
  • the time domain position of the first signal indicates that the base station determines the subframe where the first signal is located according to the period and the offset of the first signal indicated by the high layer signaling, and indicates that the OFDM symbol of the first signal of the base station is the first 3 OFDM symbols.
  • Step S303 the base station obtains the first signal according to the signal type of the first signal, and according to the determined narrowband index of the first signal, the resource block index of the first signal, the subframe where the first signal is located, and the OFDM symbol where the first signal is located Sending a first signal to one or more UEs.
  • the base station sends the first signal on the subframe z where the first first signal is located, as shown in FIG. 4 .
  • Step S304 the UE receives the first signal sent by the base station according to the frequency domain location and the time domain location of the first signal;
  • Step S305 the UE obtains the first signal according to the signal type of the first signal, and performs correlation detection on the first signal sent by the received base station by using the first signal, and determines that the received transmission is sent to the local when the energy peak is detected.
  • the first signal of the UE The first signal of the UE.
  • the UE detects the corresponding first signal on the subframe z, and then performs blind detection from the search space y until the corresponding PDCCH is obtained. That is, the search space y is detected first, and then the search space y+1 is detected.
  • the blind detection of the PDCCH is not performed in the next period T.
  • the method for blindly detecting the PDCCH belongs to the prior art, and is not described here.
  • the method for obtaining the starting subframe of the search space belongs to the prior art.
  • the index of the starting subframe of the search space corresponding to the PDCCH is used.
  • Satisfy For the NB-IoT system, the index of the starting subframe of the search space corresponding to the PDCCH is satisfied.
  • n f is a radio frame index
  • n s is a slot index.
  • the value of the G MPDCCH is configured by higher layer signaling;
  • the value of G NPDCCH , ⁇ is configured by higher layer signaling.
  • a method for transmitting a downlink control channel is provided, which continues as shown in FIG. 3 and includes the following steps:
  • Step S301 the base station determines, according to the frequency domain location of the first signal, a narrowband index where the first signal is located and a resource block index where the first signal is located;
  • Step S302 the base station determines, according to the time domain location of the first signal, the subframe where the first signal is located and the OFDM symbol where the first signal is located;
  • the time domain position of the first signal indicates that the base station determines the subframe where the first signal is located according to the start position of the search space corresponding to the physical downlink control channel, and indicates that the OFDM symbol where the first signal is located is the fourth OFDM. symbol.
  • Step S303 the base station obtains the first signal according to the signal type of the first signal, and according to the determined narrowband index of the first signal, the resource block index of the first signal, the subframe where the first signal is located, and the OFDM symbol where the first signal is located Sending a first signal to one or more UEs.
  • the starting subframe of the search space is the subframe n
  • the subframe where the first signal is located is the subframe ⁇ nk 0 , nk 1 , . . . , nk x-1 ⁇ .
  • the value of k is a fixed value of 1.
  • the starting subframe of the search space y is the subframe ny
  • the starting subframe of the search space y+1 is the subframe ny+1.
  • the starting subframe of the search space y+2 is the subframe ny+2. It is assumed that the base station sends the search space where the physical downlink control channel corresponding to the UE A is located as the search space y+1; then the base station sends the corresponding first signal on the subframe ny+1-1.
  • the first signal is located on the fourth symbol of the starting subframe of the search space, as shown in FIG. 6 . .
  • the first signal is located on the fourth symbol of one subframe before the start subframe of the search space, as shown in FIG. 7 . .
  • the subframe in which the first signal is located is the first, second, third, fourth, fifth, sixth, seventh, and eighth subframes before the start subframe of the search space 4 symbols, as shown in Figure 8.
  • Step S304 the UE receives the first signal sent by the base station according to the frequency domain location and the time domain location of the first signal;
  • Step S305 the UE obtains the first signal according to the signal type of the first signal, and performs correlation detection on the first signal sent by the received base station by using the first signal, and determines that the received transmission is sent to the local when the energy peak is detected.
  • the first signal of the UE The first signal of the UE.
  • the UE detects the first signal in the subframe ny-1 and does not detect the corresponding first signal, then the UE A does not blindly detect the PDCCH in the search space y, and the UE A is in the subframe ny.
  • +1-1 detects the first signal and detects the corresponding first signal, then UE A blindly detects the PDCCH in the search space y+1;
  • UE A detects the first signal in subframe ny+2-1 and does not detect the corresponding The first signal, then UE A does not blindly detect the PDCCH in the search space.
  • a method for transmitting a downlink control channel is provided, which continues as shown in FIG. 3 and includes the following steps:
  • Step S301 the base station determines, according to the frequency domain location of the first signal, a narrowband index where the first signal is located and a resource block index where the first signal is located;
  • Step S302 the base station determines, according to the time domain location of the first signal, the subframe where the first signal is located and the OFDM symbol where the first signal is located;
  • the time domain location of the first signal indicates that the base station determines the subframe in which the first signal is located according to the repetition number corresponding to the physical downlink control channel, where determining the first signal according to the repetition number corresponding to the physical downlink control channel includes:
  • Step S303 the base station obtains the first signal according to the signal type of the first signal, and according to the determined narrowband index of the first signal, the resource block index of the first signal, the subframe where the first signal is located, and the OFDM symbol where the first signal is located Sending a first signal to one or more UEs.
  • the base station sends the number of repetitions corresponding to the downlink control channel corresponding to the UE A to R2; then the base station is in the subframe ⁇ subframe m, subframe m+2, subframe m+4, subframe m+6 ⁇ Send the corresponding first signal.
  • Step S304 the UE receives the first signal sent by the base station according to the frequency domain location and the time domain location of the first signal;
  • Step S305 the UE obtains the first signal according to the signal type of the first signal, and performs correlation detection on the first signal sent by the received base station by using the first signal, and determines that the received transmission is sent to the local when the energy peak is detected.
  • the first signal of the UE The first signal of the UE.
  • the UE ie, UE A
  • the UE is in ⁇ subframe m, subframe m+1, subframe m+2, subframe m+3, subframe m+4, subframe m+5, subframe.
  • m+6 detecting the first signal on the subframe m+7 ⁇ and detecting the first signal on the ⁇ subframe m, the subframe m+2, the subframe m+4, the subframe m+6 ⁇ , then the UE A A candidate set detection with a repetition number of R2 is selected.
  • a method for transmitting a downlink control channel is provided, which continues as shown in FIG. 3 and includes the following steps:
  • Step S301 the base station determines, according to the frequency domain location of the first signal, a narrowband index where the first signal is located and a resource block index where the first signal is located;
  • Step S302 the base station determines, according to the time domain location of the first signal, the subframe where the first signal is located and the OFDM symbol where the first signal is located;
  • Step S303 the base station obtains the first signal according to the signal type of the first signal, and according to the determined narrowband index of the first signal, the resource block index of the first signal, the subframe where the first signal is located, and the OFDM symbol where the first signal is located Sending a first signal to one or more UEs.
  • the base station if the base station sends the downlink control channel corresponding to the UE A in the subframe p, the base station sends a corresponding first signal in the subframe p.
  • Step S304 the UE receives the first signal sent by the base station according to the frequency domain location and the time domain location of the first signal;
  • Step S305 the UE obtains the first signal according to the signal type of the first signal, and performs correlation detection on the first signal sent by the received base station by using the first signal, and determines that the received transmission is sent to the local when the energy peak is detected.
  • the first signal of the UE The first signal of the UE.
  • the UE blindly detects each PDCCH from the search space corresponding to the PDCCH. If the first signal is not detected on the subframe, the corresponding PDCCH is not detected, only on the subframe p. The first signal is detected, and then the UE detects the corresponding PDCCH.
  • a method for transmitting a downlink control channel includes the following steps:
  • Step S301 the base station determines, according to the frequency domain location of the first signal, a narrowband index where the first signal is located and a resource block index where the first signal is located;
  • Step S302 the base station determines, according to the time domain location of the first signal, the subframe where the first signal is located and the OFDM symbol where the first signal is located;
  • Step S303 the base station obtains the first signal according to the signal type of the first signal, and according to the determined narrowband index of the first signal, the resource block index of the first signal, the subframe where the first signal is located, and the OFDM symbol where the first signal is located Sending a first signal to one or more UEs.
  • the receiving bandwidth of the terminal is at least 1.4 MHz, corresponding to 72 subcarriers, and the narrowband index of the first signal is narrowband 1, then the corresponding sub-signal The number of carriers is the same as the receiving bandwidth.
  • the signal type of the first signal indicates that the sequence of the first signal is a ZC sequence, and the sequence configuration information indicated is that the length of the ZC sequence is determined according to the number of subcarriers corresponding to the first signal, and the length of the sequence is 71, and is cyclically shifted.
  • the first signal corresponds to multiple OFDM symbols (the plurality of OFDM symbols are from the same subframe and/or different subframes) and the length of the sequence is determined according to the number of subcarriers corresponding to the first signal, multiple OFDM The sequence on the symbol is obtained by repetition.
  • the sequence corresponding to the first signal on the subframe w is ⁇ R( 0), R(1), ..., R(71) ⁇
  • the sequence corresponding to the first signal on the subframe w+1 is ⁇ R(0), R(1), ..., R(71) ⁇
  • the first signal corresponds to a plurality of OFDM symbols and the length of the sequence is determined according to the number of subcarriers corresponding to the first signal and the OFDM symbol, and the sequence length is determined according to the number of 72* OFDM symbols, and if the number of OFDM symbols is 2, then the loop is adopted.
  • the shift generation sequence is ⁇ R(0), R(1), ..., R(143) ⁇ , assuming that the first signal corresponds to the third OFDM symbol of the subframe w and the third OFDM symbol of the subframe w+1, Then the sequence corresponding to the first signal on the subframe w is ⁇ R(0), R(1), ..., R(71) ⁇ , and the sequence corresponding to the first signal on the subframe w+1 is ⁇ R(72). ), R(1),...,R(143) ⁇ .
  • the root sequence is selected according to the Cell_ID 1, and the cyclic shift corresponding to the root sequence is selected according to the UE_ID A.
  • Step S304 the UE receives the first signal sent by the base station according to the frequency domain location and the time domain location of the first signal;
  • Step S305 The UE obtains a first signal according to the signal type information of the first signal, and performs correlation detection on the first signal sent by the received base station by using the first signal, and when the energy peak is detected, determining that the sending is sent to The first signal of the UE.
  • UE A determines a root sequence according to Cell_ID 1, determines a corresponding cyclic shift according to UE_ID A, and performs cyclic shift according to root sequence, cyclic shift interval, and cyclic shift. Obtaining a corresponding first signal A;
  • the UE A performs correlation detection on the received first signal according to the obtained first signal A, detects an energy peak, and UE A blindly detects the MPDCCH;
  • the other UE obtains the first signal according to the same method, and performs correlation detection on the received first signal by using the obtained first signal. If the energy peak cannot be detected, the UE does not blindly detect the PDCCH.
  • a method for transmitting a downlink control channel includes the following steps:
  • Step S301 the base station determines, according to the frequency domain location of the first signal, a narrowband index where the first signal is located and a resource block index where the first signal is located;
  • the frequency domain location of the first signal may be pre-agreed information between the base station and the UE.
  • Step S302 the base station determines, according to the time domain location of the first signal, the subframe where the first signal is located and the OFDM symbol where the first signal is located;
  • the time domain location information of the first signal may be pre-agreed information between the base station and the UE.
  • the information indicates how the base station determines the subframe in which the first signal is located and the OFDM symbol in which the first signal is located.
  • Step S303 the base station obtains the first signal according to the signal type of the first signal, and according to the determined narrowband index of the first signal, the resource block index of the first signal, the subframe where the first signal is located, and the OFDM symbol where the first signal is located Sending a first signal to one or more UEs.
  • the receiving bandwidth of the terminal is at least 1.4 MHz, corresponding to 72 subcarriers, and the narrowband index of the first signal is narrowband 1, then the corresponding sub-signal The number of carriers is the same as the receiving bandwidth.
  • the signal type of the first signal indicates that the sequence of the first signal is a ZC sequence, and the sequence configuration information indicated is: the length of the ZC sequence is determined according to the number of corresponding subcarriers of the first signal, and the length of the sequence is 63, which is obtained by cyclic shift.
  • the relationship between the root sequence index and the cell index is predefined; the interval corresponding to the cyclic shift is configured by signaling; the high-level signaling indicates the terminal The corresponding sequence is cyclically shifted.
  • the root sequence is selected according to Cell_ID 1, and the cyclic shift corresponding to the root sequence is selected according to CS_A.
  • Step S304 the UE receives the first signal sent by the base station according to the frequency domain location and the time domain location of the first signal;
  • Step S305 The UE obtains a first signal according to the signal type information of the first signal, and performs correlation detection on the first signal sent by the received base station by using the first signal, and when the energy peak is detected, determining that the sending is sent to The first signal of the UE.
  • UE A determines a root sequence according to Cell_ID 1, determines a corresponding cyclic shift according to CS_A, and obtains according to a root sequence, a cyclic shift interval, and a cyclic shift.
  • the UE A performs correlation detection on the received first signal according to the obtained first signal A, detects an energy peak, and UE A blindly detects the PDCCH;
  • the other UE obtains the first signal according to the same method, and performs correlation detection on the received first signal by using the obtained first signal. If the energy peak cannot be detected, the UE does not blindly detect the PDCCH.
  • a method for transmitting a downlink control channel includes the following steps:
  • Step S301 the base station determines, according to the frequency domain location of the first signal, a narrowband index where the first signal is located and a resource block index where the first signal is located;
  • the frequency domain location of the first signal may be pre-agreed information between the base station and the UE.
  • Step S302 the base station determines, according to the time domain location of the first signal, the subframe where the first signal is located and the OFDM symbol where the first signal is located;
  • the time domain location information of the first signal may be pre-agreed information between the base station and the UE.
  • the information indicates how the base station determines the subframe in which the first signal is located and the OFDM symbol in which the first signal is located.
  • Step S303 the base station obtains the first signal according to the signal type of the first signal, and according to the determined narrowband index of the first signal, the resource block index of the first signal, the subframe where the first signal is located, and the OFDM symbol where the first signal is located Sending a first signal to one or more UEs.
  • the reception bandwidth of the terminal is at least 1.4 MHz, corresponding to 72 subcarriers.
  • the narrowband index of the first signal is narrowband 1, and the number of subcarriers corresponding to the first signal is the same as the receiving bandwidth.
  • the signal type of the first signal indicates that the sequence of the first signal is a ZC sequence, and the sequence configuration information indicated is: ZC sequence.
  • the length is determined according to the number of subcarriers corresponding to the first signal, the length of the sequence is 67, and a sequence of 72 long is obtained by cyclic shift; for a ZC sequence with a sequence length of 67, corresponding to 60 root sequences, wherein the root sequence is indexed and The relationship between the cell indexes is predefined; the interval corresponding to the cyclic shift is configured by signaling; and the sequence cyclic shift is obtained according to the high layer signaling indication and the cell index.
  • the root sequence is selected according to Cell_ID 1
  • the cyclic shift CS_A corresponding to the root sequence is selected according to CS_A1 and Cell_ID 1.
  • determining the corresponding cyclic shift CS_A according to CS_A1 and Cell_ID1 means that a PN sequence of R length is generated according to Cell_ID1, and the generated PN sequences are added to obtain CS_A2, then CS_A is CS_A1, and CS_CA2 is added.
  • CS_A contains the information of the cell index, which can achieve the effect of randomization of inter-cell interference.
  • Step S304 the UE receives the first signal sent by the base station according to the frequency domain location and the time domain location of the first signal;
  • Step S305 the UE obtains the first signal according to the signal type of the first signal, and performs correlation detection on the first signal sent by the received base station by using the first signal, and determines that the received transmission is sent to the local when the energy peak is detected.
  • the first signal of the UE The first signal of the UE.
  • the UE A determines the root sequence according to the Cell_ID 1, and determines the corresponding cyclic shift according to the CS_A1 and the Cell_ID1 (for the determination manner, refer to step S303 in this embodiment), and according to The root sequence, the interval of the cyclic shift, and the cyclic shift obtain the corresponding first signal A.
  • the UE A performs correlation detection on the received first signal according to the obtained first signal A, detects an energy peak, and UE A blindly detects the PDCCH;
  • the other UE obtains the first signal according to the same method, and performs correlation detection on the received first signal by using the obtained first signal. If the energy peak cannot be detected, the UE does not blindly detect the PDCCH.
  • a method for transmitting a downlink control channel includes the following steps:
  • Step S301 the base station determines, according to the frequency domain location of the first signal, a narrowband index where the first signal is located and a resource block index where the first signal is located;
  • the frequency domain location of the first signal may be pre-agreed information between the base station and the UE.
  • Step S302 the base station determines, according to the time domain location of the first signal, the subframe where the first signal is located and the OFDM symbol where the first signal is located;
  • the time domain location information of the first signal may be pre-agreed information between the base station and the UE.
  • the information indicates how the base station determines the subframe in which the first signal is located and the OFDM symbol in which the first signal is located.
  • Step S303 the base station obtains the first signal according to the signal type of the first signal, and according to the determined narrowband index of the first signal, the resource block index of the first signal, the subframe where the first signal is located, and the OFDM symbol where the first signal is located Sending a first signal to one or more UEs.
  • the receiving bandwidth of the terminal is at least 1.4 MHz, corresponding to 72 subcarriers, and the narrowband index of the first signal is narrowband 1, then the corresponding sub-signal The number of carriers is the same as the receiving bandwidth.
  • the signal type of the first signal indicates that the sequence of the first signal is a ZC sequence, and the sequence configuration information indicated is: the length of the ZC sequence is determined according to the number of first signal subcarriers, the length of the sequence is 71, and 72 lengths are obtained by cyclic shift.
  • the relationship between the root sequence index and the cell index is predefined; the sequence cyclic shift is obtained according to the cell index and the OFDM symbol index of the first signal, or And performing sequence cyclic shift according to the high-level signaling indication, the cell index, and the OFDM symbol index of the first signal, and configuring the interval corresponding to the cyclic shift by using signaling.
  • the root sequence is selected according to the Cell_ID 1, and the cyclic sequence corresponding to the root sequence is obtained according to the cell index and the OFDM symbol index of the first signal, or the cell is indicated according to the high layer signaling.
  • the index and the OFDM symbol index of the first signal are cyclically shifted by the sequence corresponding to the root sequence.
  • CS_A of OFDM symbol 3 is a value obtained after modulo the maximum cyclic shift after adding CS_A1 and CS_A2_3
  • CS_A of OFDM symbol 4 is a value obtained after modulo the maximum cyclic shift after adding CS_A1 and CS_A2_4.
  • the manner of obtaining a sequence cyclic shift corresponding to the root sequence according to the high layer signaling indication, the cell index, and the OFDM symbol index of the first signal includes, but is not limited to:
  • CS_A of OFDM symbol 3 is a value obtained after modulo the maximum cyclic shift after adding CS_A1_3 and CS_A2
  • CS_A of OFDM symbol 4 is a value obtained after modulo the maximum cyclic shift after adding CS_A1_4 and CS_A2.
  • An R-length PN sequence is generated according to the Cell_ID1 and the OFDM symbol index, and the generated PN sequences are added to obtain CS_A2, that is, OFDM symbol 3 corresponds to CS_A2 as CS_A2_3, and OFDM symbol 4 corresponds to CS_A2 as CS_A2_4.
  • CS_A of OFDM symbol 3 is a value obtained after modulo the maximum cyclic shift after adding CS_A1_3 and CS_A2_3;
  • CS_A of OFDM symbol 4 is a value obtained after modulo the maximum cyclic shift after adding CS_A1_4 and CS_A2_4.
  • the sequence cyclic shift corresponding to the root sequence may also be obtained according to other manners.
  • the first signal occupies 1 OFDM symbol in multiple subframes and each subframe, and the cyclic shift may also be based on The high-level signaling indication, the cell index, and the subframe index are obtained, that is, the OFDM symbol index is replaced by the subframe index.
  • the first signal occupies 2 OFDM symbols in multiple subframes and each subframe, and the cyclic shift can also be obtained according to the high layer signaling indication, the cell index, the subframe index, and the OFDM index, that is, on the foregoing basis.
  • the sub-frame index field is added to generate CS_A1 or CS_A2 or CS_A.
  • Step S304 the UE receives the first signal sent by the base station according to the frequency domain location and the time domain location of the first signal;
  • Step S305 the UE obtains the first signal according to the signal type of the first signal, and performs correlation detection on the first signal sent by the received base station by using the first signal, and determines that the received transmission is sent to the local when the energy peak is detected.
  • the first signal of the UE The first signal of the UE.
  • the manner in which the UE obtains the first signal according to the signal type of the first signal is the same as that on the base station side, and details are not described herein again.
  • a method for transmitting a downlink control channel includes the following steps:
  • Step S301 the base station determines, according to the frequency domain location of the first signal, a narrowband index where the first signal is located and a resource block index where the first signal is located;
  • the frequency domain location of the first signal may be pre-agreed information between the base station and the UE.
  • Step S302 the base station determines, according to the time domain location of the first signal, the subframe where the first signal is located and the OFDM symbol where the first signal is located;
  • the time domain location of the first signal may be pre-agreed information between the base station and the UE.
  • the information indicates how the base station determines the subframe in which the first signal is located and the OFDM symbol in which the first signal is located.
  • Step S303 the base station obtains the first signal according to the signal type of the first signal, and according to the determined narrowband index of the first signal, the resource block index of the first signal, the subframe where the first signal is located, and the OFDM symbol where the first signal is located Sending a first signal to one or more UEs.
  • the reception bandwidth of the terminal is at least 1.4 MHz, corresponding to 72 subcarriers.
  • the PRB index of the first signal is PRB#1, and the number of subcarriers corresponding to the first signal is 12.
  • the signal type of the first signal indicates that the sequence of the first signal is CGS and PN sequence, and the sequence configuration information indicated is: CGS.
  • the length of the sequence is determined according to the number of subcarriers corresponding to the first signal, and the length of the sequence is 12, and the interval corresponding to the cyclic shift is configured by signaling; the correspondence between the terminal index and the sequence cyclic shift is predefined.
  • the sequence length is still 12, which is ⁇ R(0), R(1), ..., R(11) ⁇
  • the sequence on the plurality of OFDM symbols is obtained by repetition (or extended by the Walsh sequence), assuming that the first signal corresponds to the third OFDM symbol of the subframe w and the third OFDM symbol of the subframe w+1, then the subframe w
  • the sequence corresponding to the first signal is ⁇ R(0), R(1), ..., R(11) ⁇
  • the sequence corresponding to the first signal on the subframe w+1 is ⁇ R(0), R( 1), ..., R(11) ⁇ ;
  • the sequence length is still 12* OFDM symbols Assuming that the number of OFDM symbols is 2, the sequence is ⁇ R
  • Cell_ID 1 When the base station transmits the first signal corresponding to UE A, Cell_ID 1 generates a PN sequence as an initial value, determines a cyclic shift corresponding to the CGS according to UE_ID A, and transmits a PN sequence *CGS as a first signal.
  • the reception bandwidth of the terminal is at least 200 KHz, corresponding to 12 subcarriers.
  • the signal type of the first signal indicates that the sequence of the first signal is a CGS and a PN sequence, and the sequence configuration information indicated is: the length of the CGS is determined according to the number of subcarriers corresponding to the first signal, and the length of the sequence is 12; The interval corresponding to the cyclic shift is configured; the correspondence between the terminal index and the sequence cyclic shift is predefined.
  • Cell_ID 1 When the base station transmits the first signal corresponding to UE A, Cell_ID 1 generates a PN sequence as an initial value, determines a cyclic shift corresponding to the CGS according to UE_ID A, and transmits a PN sequence *CGS as a first signal.
  • Step S304 the UE receives the first signal sent by the base station according to the frequency domain location and the time domain location of the first signal;
  • Step S305 the UE obtains the first signal according to the signal type of the first signal, and performs correlation detection on the first signal sent by the received base station by using the first signal, and determines that the received transmission is sent to the local when the energy peak is detected.
  • the first signal of the UE The first signal of the UE.
  • the UE A determines the cyclic shift corresponding to the CGS according to the UE_ID A according to the PN sequence generated by the Cell_ID1, according to the interval of the cyclic shift and the cyclic shift.
  • the UE A performs correlation detection on the received first signal according to the obtained first signal A, detects an energy peak, and the terminal blindly detects the PDCCH.
  • the other UE obtains the first signal according to the same method, and performs correlation detection on the received first signal according to the obtained first signal. If the energy peak is not detected, the UE does not blindly detect the PDCCH.
  • the manner of determining the cyclic shift of the sequence in this embodiment may also adopt the manner described in any one of the seventh, eighth, and ninth embodiments, and details are not described herein again.
  • the method of waking up only one terminal is taken as an example. If the base station is to wake up multiple terminals, the first signal corresponding to the multiple terminals may be sent at the same time-frequency location; And performing correlation detection on the received first signal according to the generated first signal. If the energy peak is detected, the terminal blindly detects the PDCCH corresponding to the first signal, otherwise the terminal does not blindly detect the PDCCH.
  • a transmission apparatus for a downlink control channel is provided, which is applied to a base station side, as shown in FIG.
  • the first processing module 910 is configured to send the first signal to one or more UEs according to the configuration information of the first signal;
  • the second processing module 920 is configured to: after the first processing module 910 sends the first signal, send the PDCCH corresponding to the first signal to the UE.
  • the configuration information of the first signal includes at least one of a time domain position of the first signal, a frequency domain position of the first signal, and a signal type of the first signal.
  • the time domain location of the first signal includes at least one of: a subframe in which the first signal is located and an OFDM symbol in which the first signal is located;
  • the frequency domain location of the first signal includes at least one of: a narrowband index where the first signal is located and a resource block index where the first signal is located;
  • the signal type of the first signal includes at least one of the following: a sequence corresponding to the first signal and sequence configuration information.
  • the OFDM symbol in which the first signal is located includes: a third OFDM symbol and/or a fourth OFDM symbol in the subframe, or a subframe starts from the gth OFDM symbol to the end of the subframe, where the value of g is determined by the upper layer. Signaling configuration.
  • the determining manner of the subframe where the first signal is located includes one of the following manners:
  • Manner 1 determining a subframe in which the first signal is located according to a period and/or an offset of the first signal indicated by the signaling;
  • Manner 2 determining, according to a starting position of a search space corresponding to the PDCCH, a subframe in which the first signal is located;
  • the subframe in which the subframe is located is determined to be a subframe ⁇ nk 0 , nk 1 , . . . , nk X-1 ⁇ according to a search space starting position corresponding to the PDCCH.
  • Manner 3 determining, according to a starting position of the repetition number corresponding to the PDCCH, a subframe in which the first signal is located;
  • determining, according to a starting position of the number of repetitions corresponding to the PDCCH, that the subframe in which the first signal is located is a subframe ⁇ mk 0 , mk 1 , . . . , mk X-1 ⁇ ;
  • Manner 4 determining, according to a starting position of the PDCCH, a subframe in which the first signal is located as a subframe ⁇ hk 0 , hk 1 , . . . , hk X-1 ⁇ ; h is a PDCCH starting subframe.
  • the number of repetitions corresponding to the PDCCH is one of the values in the set ⁇ 1, 2, . . . , Rmax ⁇ , n is the starting subframe of the search space corresponding to the PDCCH, and m is the starting subframe of the repetition number corresponding to the PDCCH.
  • the values of k 0 , k 1 , . . . , k X-1 are pre-agreed values of the base station and the UE, or are values indicated by signaling; the value of X is related to one or more of the following parameters: coverage level of the terminal a maximum value Rmax of the number of repetitions corresponding to the PDCCH and a period of a search space corresponding to the PDCCCH.
  • the sequence corresponding to the first signal includes one or more of the following sequences: a Walsh sequence, a ZC sequence, a PN sequence, and a CGS.
  • the sequence configuration information includes one or more of the following information:
  • the length of the ZC sequence is determined according to the number of frequency domain subcarriers corresponding to the first signal, or according to the number of frequency domain subcarriers and the number of time domain OFDM symbols corresponding to the first signal;
  • the root sequence of the ZC sequence is determined according to a cell index
  • the cyclic shift value corresponding to the ZC sequence is determined according to one or more of the following information: a cell index, an index of the UE, an offset value indicated by the high layer signaling, an index of the subframe where the first signal is located, and a first signal An index of the slot and an index of the OFDM symbol in which the first signal is located;
  • the cyclic shift interval value of the ZC sequence is determined according to a higher layer signaling configuration.
  • the sequence configuration information includes one or more of the following information:
  • the CGS length is determined according to the number of frequency domain subcarriers corresponding to the first signal, or according to the number of frequency domain subcarriers and the number of time domain OFDM symbols corresponding to the first signal;
  • the cyclic shift value corresponding to the CGS is determined according to one or more of the following information: a cell index, an index of the UE, an offset value indicated by the high layer signaling, an index of the subframe where the first signal is located, and a time when the first signal is located.
  • the cyclic shift interval value of the CGS is determined according to a higher layer signaling configuration.
  • the sequence configuration information when the sequence corresponding to the first signal includes a Walsh sequence, the sequence configuration information includes:
  • the length of the Walsh sequence is determined according to the number of time domain OFDM symbols corresponding to the first signal
  • the index of the Walsh sequence is determined according to one or more of the following information: a cell index, an index of the UE, a value indicated by the signaling, an index of the subframe in which the first signal is located, and an index of the OFDM symbol in which the first signal is located.
  • the sequence configuration information includes: the initial value of the PN sequence is determined according to the cell index.
  • the apparatus provides a first signal transmission scheme.
  • the base station sends the first signal by using the scheme, the low power consumption terminal or the UE in the low power consumption mode can be further reduced. Power consumption.
  • a transmission apparatus for a downlink control channel which is applied to the UE side, as shown in FIG. 10, and includes:
  • the signal receiving module 1010 is configured to detect, according to configuration information of the first signal, a first signal corresponding to the local UE that is sent by the base station;
  • the signal detection module 1020 is configured to detect the PDCCH corresponding to the first signal when the first signal corresponding to the UE is detected.
  • the configuration information of the first signal includes at least one of time domain location information of the first signal, frequency domain location information of the first signal, and signal type information of the first signal.
  • the signal receiving module 1010 specifically includes:
  • the receiving submodule is configured to receive the first signal sent by the base station according to the time domain location and the frequency domain location of the first signal;
  • Determining a sub-module configured to obtain a first signal according to a signal type of the first signal, and perform correlation detection on the received first signal by using the first signal to determine whether the first signal corresponding to the UE to which the device belongs is detected .
  • the receiving submodule is configured to determine, according to a frequency domain location of the first signal, a narrowband index where the first signal is located and/or a resource block index where the first signal is located; and determine the first signal according to the time domain location of the first signal.
  • the receiving submodule is configured to:
  • the subframe in which the first signal is located is determined to be a subframe ⁇ nk 0 , nk 1 , . . . , nk X-1 ⁇ according to a search space start position corresponding to the PDCCH.
  • n is the starting subframe of the search space corresponding to the PDCCH.
  • the subframe in which the first signal is located is determined to be a subframe ⁇ mk 0 , mk 1 , . . . , mk X-1 ⁇ according to a starting position of the number of repetitions corresponding to the PDCCH, where m For the starting subframe of the repetition number corresponding to the PDCCH, the number of repetitions corresponding to the PDCCH is ⁇ 1, 2, . . . , Rmax ⁇ .
  • h is a PDCCH starting subframe
  • the values of k 0 , k 1 , ..., k X-1 are values pre-agreed by the base station and the UE, or are values indicated by the signaling; the value of X is related to one or more of the following parameters: The coverage level, the maximum value Rmax of the repetition number corresponding to the PDCCH, and the period of the search space corresponding to the PDCCCH.
  • the receiving submodule determines that the OFDM symbol where the first signal is located may be, but is not limited to, a third OFDM symbol and/or a fourth OFDM symbol in the subframe, or a sub-frame from the first
  • the g OFDM symbols start to the end of the subframe, where the value of g is configured by higher layer signaling. .
  • the signal type of the first signal includes sequence and/or sequence configuration information corresponding to the first signal
  • the sequence corresponding to the first signal includes one or more of the following sequences: a Walsh sequence, a ZC sequence, a PN sequence, and a CGS.
  • the sequence configuration information when the sequence corresponding to the first signal includes the ZC sequence, includes: a ZC sequence length, a root sequence of the ZC sequence, a cyclic shift value corresponding to the ZC sequence, and a cycle of the ZC sequence. The way the shift interval value is determined.
  • determining the length of the ZC sequence, the root sequence of the ZC sequence, the cyclic shift value corresponding to the ZC sequence, and the cyclic shift interval value of the ZC sequence include:
  • the index of the UE the offset value indicated by the high layer signaling, the index of the subframe where the first signal is located, the index of the slot where the first signal is located, and one or more of the OFDM symbol indexes of the first signal are obtained.
  • the cyclic shift value of the ZC sequence
  • the cyclic shift interval is obtained according to the high layer signaling.
  • the first signal is obtained, including:
  • the first signal is obtained based on the length of the ZC sequence, the root sequence of the ZC sequence, the cyclic shift value corresponding to the ZC sequence, and the cyclic shift interval value of the ZC sequence.
  • the sequence configuration information when the sequence corresponding to the first signal includes the CGS, includes: a sequence length, a cyclic shift value corresponding to the CGS, and a determination manner of the cyclic shift interval value corresponding to the CGS.
  • the manner of determining the sequence length, the cyclic shift value corresponding to the CGS, and the cyclic shift interval value corresponding to the CGS includes:
  • the index of the UE determines the cyclic shift value
  • the cyclic shift interval is obtained according to the high layer signaling.
  • the first signal is obtained, including:
  • the first signal is obtained according to the sequence length of the CGS, the cyclic shift value corresponding to the CGS, and the cyclic shift interval value of the CGS.
  • the sequence corresponding to the first signal may be a Walsh sequence.
  • the sequence configuration information includes: a Walsh sequence length and a determination manner of an index of the Walsh sequence.
  • the length of the Walsh sequence is determined according to the number of time domain OFDM symbols corresponding to the first signal; the index of the UE, the value indicated by the signaling, the index of the subframe where the first signal is located, and the first One or more of the indices of the OFDM symbols in which a signal is located, resulting in an index of the Walsh sequence.
  • the first signal is obtained, including:
  • a first signal is obtained based on the length and index of the Walsh sequence.
  • the sequence configuration information includes: the initial value of the PN sequence is determined according to the cell index.
  • the UE that uses the device in the embodiment of the present disclosure performs the blind detection of the PDCCH only after detecting the first signal sent by the base station to the local UE, and it can be seen that the present disclosure can enable the terminal to Lower power consumption gets downlink information.
  • a base station comprising: a first memory 1110 and a first processor 1120, wherein the first memory 1110 stores computer instructions, the first process
  • the processor 1120 implements the following method by executing the computer instructions:
  • the PDCCH corresponding to the first signal is sent to the UE.
  • the base station can enable the terminal to obtain downlink information with lower power consumption.
  • a UE is provided, as shown in FIG. 12, including: a second memory 1210 and a second processor 1220, wherein the second memory 1210 stores computer instructions, and the second process
  • the processor 1220 implements the following method by executing the computer instructions:
  • the PDCCH corresponding to the first signal is detected.
  • the UE in the embodiment of the present disclosure performs the blind detection of the PDCCH only after detecting the first signal sent by the base station to the local UE, and it can be seen that the present disclosure can make the terminal lower by introducing the first signal.
  • the power consumption gets downlink information.
  • the embodiment of the present disclosure further provides a storage medium, which may be a computer readable storage medium, on which computer instructions are stored, and when the computer instructions are executed by the processor, the steps of the base station side method are implemented.
  • an embodiment of the present disclosure further provides a storage medium, which may be a computer readable storage medium, on which computer instructions are stored, and when the computer instructions are executed by the processor, the steps of the UE side method are implemented.
  • modules or steps of the present disclosure described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.
  • the UE performs the blind detection of the PDCCH only after detecting the first signal sent by the base station to the local UE. It can be seen that the present disclosure can enable the terminal to obtain the downlink with lower power consumption by introducing the first signal. information.

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Abstract

本公开公开了一种下行控制信息的传输方法、装置、基站、用户设备 (UE) 及存储介质，所述方法包括：基站根据第一信号的配置信息，向一个或多个UE 发送第一信号，并在发送所述第一信号后，向 UE 发送所述第一信号对应的物理下行控制信道。

Description

下行控制信道的传输方法、装置、基站和用户设备
相关申请的交叉引用
本申请基于申请号为201710182696.8、申请日为2017年03月24日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开涉及通信领域，尤其涉及一种下行控制信道的传输方法、装置、基站、用户设备(User Equipment，UE)和存储介质。
背景技术
机器类型通信(Machine Type Communications，MTC)，又称机器到机器(Machine to Machine，M2M)，是现阶段物联网的主要应用形式。目前市场上部署的MTC设备主要基于全球移动通信(Global System of Mobile communication，GSM)系统。近年来，由于长期演进(Long Term Evolution，LTE)/增强LTE(LTE-Advanced，LTE-A)的频谱效率高，越来越多的移动运营商选择LTE/LTE-A作为未来宽带无线通信系统的演进方向。基于LTE/LTE-A的MTC多种类数据业务也将更具吸引力。
在第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)技术报告TR45.820V200中公开了几种适用于蜂窝级物联网(Comb-Internet Of Things，C-IOT)的技术。其中，窄带物联网(Narrow Bang-Internet Of Things，NB-IOT)技术最为引人注目。NB-IOT系统关注低复杂度和低吞吐量的射频接入技术，主要的研究目标包括：改善的室内覆盖，巨量低吞吐量用户设备的支持，低的延时敏感性，超低设备成本，低的设备功率损耗以及网 络架构。
网络可以向空闲态和连接态的UE发送寻呼。寻呼过程可以由核心网触发，用于通知某个UE接收寻呼请求，也可以由eNB触发，用于通知系统信息的更新。寻呼消息采用P-无线网络临时标示(Radio Network Temporary Identifier，RNTI)加扰的物理下行控制信道(Physical Downlink Control Channel，PDCCH)调度，在物理下行共享信道(Physical Downlink Shared Channel，PDSCH)传输。终端在寻呼时刻(Paging Occasion，PO)去检测对应的PDCCH，从而确定所述PDCCH指示的PDSCH是否承载寻呼消息，如果终端在该PO没有检测到对应的PDCCH，就表示在这个PO没有寻呼消息，此时终端进行睡眠状态，不接收数据，直到下一个PO再进行检测，也就是终端需要在每个PO都进行PDCCH的盲检测。相关的MTC/NB-IOT系统中，机器类型通信物理下行控制信道MPDCCH(MTC PDCCH，MPDCCH)/窄带物理下行控制信道(Narrowband PDCCH，NPDCCH)是承载在PDSCH区域的，也就是终端接收完整子帧后才能确定是否检测到对应的MPDCCH，这就消耗了终端的功耗。
发明内容
本公开实施例提供一种下行控制信道的传输方法、装置、基站、UE和存储介质。
依据本公开的一个方面，提供一种下行控制信道的传输方法，包括：
基站根据第一信号的配置信息，向一个或多个UE发送第一信号；
基站在发送所述第一信号后，向所述UE发送所述第一信号对应的PDCCH。
依据本公开的另一个方面，提供一种下行控制信道的传输方法，包括：
UE根据第一信号的配置信息检测基站发送的所述UE对应的第一信号；
UE在检测到对应的第一信号时，检测该第一信号对应的PDCCH。
依据本公开的第三个方面，提供一种下行控制信道的传输装置，应用于基站侧，包括：
第一处理模块，配置为根据第一信号的配置信息，向一个或多个UE发送第一信号；
第二处理模块，配置为在所述第一处理模块发送所述第一信号后，向所述UE发送所述第一信号对应的PDCCH。
依据本公开的第四个方面，提供一种下行控制信道的传输装置，应用于UE侧，包括：
信号接收模块，配置为根据第一信号的配置信息检测基站发送的所述UE对应的第一信号；
信号检测模块，配置为在检测到对应的第一信号时，检测该第一信号对应的PDCCH。
依据本公开的第五个方面，提供一种基站，包括：第一存储器和第一处理器，其中，所述第一存储器中存储有计算机指令，所述第一处理器通过执行所述计算机指令，从而实现以下方法：
根据第一信号的配置信息，向一个或多个UE发送第一信号；
在发送所述第一信号后，向所述UE发送所述第一信号对应的PDCCH。
依据本公开的第六个方面，提供一种UE，包括：第二存储器和第二处理器，其中，所述第二存储器中存储有计算机指令，所述第二处理器通过执行所述计算机指令，从而实现以下方法：
根据第一信号的配置信息检测基站发送的所述UE对应的第一信号；
在检测到对应的第一信号时，检测该所述第一信号对应的PDCCH。
依据本公开的第七方面，提供一种存储介质，其上存储有计算机指令，所述计算机指令被处理器执行时上述基站侧方法的步骤。
依据本公开的第八方面，提供一种存储介质，其上存储有计算机指令，所述计算机指令被处理器执行时上述UE侧方法的步骤。
本公开实施例的有益效果如下：
本公开实施例给出了一种下行控制信道发送和接收方案，针对UE来说，只有检测到基站发送至本UE的第一信号，才进行PDCCH的盲检测，可见，本公开通过引入第一信号，可以使终端以更低的功耗获得下行信息。
上述说明仅是本公开技术方案的概述，为了能够更清楚了解本公开的技术手段，而可依照说明书的内容予以实施，并且为了让本公开的上述和其它目的、特征和优点能够更明显易懂，以下特举本公开的具体实施方式。
附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出实施例的目的。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1为本公开第一实施例提供的一种下行控制信道的传输方法的流程图；
图2为本公开第二实施例提供的一种下行控制信道的传输方法的流程图；
图3为本公开第三实施例提供的一种下行控制信道的传输方法的流程图；
图4为本公开第三实施例中第一信号所在子帧的示意图；
图5至8为本公开第四实施例中第一信号所在子帧的示意图；
图9为本公开第十二实施例提供的一种下行控制信道的传输装置的结构框图；
图10为本公开第十三实施例提供的一种下行控制信道的传输装置的结构框图；
图11为本公开第十四实施例提供的一种基站的结构框图；
图12为本公开第十五实施例提供的一种UE的结构框图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
本公开实施例提供一种下行控制信道的传输方法、装置、基站、UE和存储介质，本公开实施例提到的下行控制信道即PDCCH是用来承载下行控制信息的，在NB-IoT系统中，下行控制信道为NPDCCH，对于MTC系统，下行控制信道为MPDCCH，对于NR系统，下行控制信道为NR-PDCCH；不管任何系统，凡是用来承载下行控制信息的控制信道都属于本公开保护的范围。下面通过几个具体实施例对本公开的实施过程进行详细阐述。
在本公开的第一实施例中，提供一种下行控制信道的传输方法，如图1所示，包括如下步骤：
步骤S101，基站根据第一信号的配置信息，向一个或多个UE发送第一信号；
步骤S102，基站在发送所述第一信号后，向所述UE发送所述第一信号对应的PDCCH。
本公开实施例中，第一信号的配置信息包括：第一信号的时域位置、第一信号的频域位置和第一信号的信号类型中至少之一。
在本公开的一个具体实施例中，第一信号的时域位置包含以下至少之一：第一信号所在的子帧和第一信号所在的正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号。
其中，第一信号所在的OFDM符号包括：子帧内第3个OFDM符号和/或第4个OFDM符号，或者，子帧内从第g个OFDM符号开始到子帧结束，其中g的值由高层信令配置。
进一步地，本公开实施例中，第一信号所在的子帧根据以下方式至少之一确定：
方式一：根据信令指示的第一信号的周期和/或偏移确定第一信号所在的子帧；
方式二：根据PDCCH对应的搜索空间起始位置，确定第一信号所在的子帧；
具体地，本公开实施例中，根据PDCCH对应的搜索空间起始位置，确定所述第一信号所在的子帧为子帧{n-k 0,n-k 1,…,n-k X-1}，其中n为PDCCH对应的搜索空间的起始子帧。
方式三：根据PDCCH对应的重复次数的起始位置，确定第一信号所在的子帧；
具体地，本公开实施例中，根据PDCCH对应的重复次数的起始位置，确定所述第一信号所在的子帧为子帧{m-k 0,m-k 1,…,m-k X-1}；其中m为PDCCH对应的重复次数的起始子帧，PDCCH对应的重复次数的取值为{1,2,…,Rmax}。
方式四：根据PDCCH的起始位置，确定所述第一信号所在的子帧为子帧{h-k 0,h-k 1,…,h-k X-1}；h为PDCCH起始子帧。
本实施例中，k 0、k 1、…、k X-1的值为基站和UE预先约定的值，或者为信令指示的值；X的值根据如下参数中的一种或多种有关：终端的覆盖等级，所述PDCCH对应的重复次数的最大值Rmax和所述PDCCCH对应的搜索空间的周期。
进一步地，本公开实施例中，第一信号的信号类型包含以下至少之一： 第一信号对应的序列和序列配置信息；
其中，第一信号对应的序列为：沃什序列，ZC序列，伪随机噪声(PN)序列，计算机搜索序列(CGS)中的一种或多种。
在本公开的一个具体实施例中，当第一信号对应的序列包含ZC序列时，序列配置信息包括：ZC序列长度、ZC序列的根序列、ZC序列对应的循环移位值和ZC序列的循环移位间隔值的确定方式。
具体地，ZC序列长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
ZC序列的循环移位间隔值按高层信令配置取值；
ZC序列的根序列根据小区索引确定；
ZC序列对应的循环移位值根据如下信息中的一个或多个确定：小区索引、终端索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引、第一信号所在OFDM符号的索引。
在本公开的一个具体实施例中，当第一信号对应的序列包含CGS时，序列配置信息包括：序列长度、CGS对应的循环移位值和CGS对应的循环移位间隔值的确定方式。
具体地，CGS长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
CGS对应的循环移位值根据如下信息中的一个或多个确定：小区索引，终端索引，高层信令指示的偏移值，第一信号所在子帧的索引，第一信号所在时隙的索引，第一信号所在OFDM符号的索引；
CGS对应的循环移位间隔值按高层信令配置取值。
在本公开的一个具体实施例中，当第一信号对应的序列包含沃什序列时，序列配置信息包括：沃什序列长度和沃什序列的索引的确定方式。
具体地，沃什序列长度根据第一信号对应的时域OFDM符号个数确定；
沃什序列的索引可以根据如下信息中的一个或多个信息确定：小区索引，终端索引，信令指示的值，第一信号所在子帧索引和第一信号所在OFDM符号的索引。
进一步地，本公开实施例中，当第一信号对应的序列还包含PN序列时，序列配置信息包括：PN序列的初始值根据小区索引确定。
进一步地，本公开实施例中，第一信号的频域位置包含以下至少之一：第一信号所在的窄带索引和第一信号所在的资源块索引。
可选地，根据第一信号的频域位置得到第一信号所占的子载波个数，当第一信号的频域位置为第一信号所在的窄带索引，那么子载波个数为窄带对应的子载波个数，第一信号的频域位置为第一信号所在的资源块索引，那么子载波个数为资源块对应的子载波个数。
可选地，本公开实施例中，通过高层信令指示第一信号所在的窄带索引和/或第一信号所在的资源块索引。
另外，在本公开的一个可选实施例中，当高层信令的第一模式开启时，基站在发送所述第一信号后，向所述UE发送所述第一信号对应的PDCCH，否则基站直接发送PDCCH；或者，当高层信令指示第一模式时，基站在发送所述第一信号后，向所述UE发送所述第一信号对应的PDCCH；高层信令指示第二模式时，基站直接发送PDCCH；或者，在t毫秒周期内的t1毫秒，基站在发送所述第一信号后，向所述UE发送所述第一信号对应的PDCCH，在t毫秒周期内的其他时刻，基站直接发送PDCCH。
综上所述，本公开实施例所述方法给出了一种第一信号发送方案，当基站采用该方案发送第一信号时，使得终端可以使用更低的功耗获得下行控制信道。
在本公开的第二实施例中，提供一种下行控制信道的传输方法，如图2所示，所述方法包括如下步骤：
步骤S201，UE根据第一信号的配置信息检测基站发送的本UE对应的第一信号；
步骤S202，UE在检测到对应的第一信号时，检测该第一信号对应的物理下行控制信道PDCCH。
本公开实施例中，第一信号的配置信息包括：第一信号的时域位置、第一信号的频域位置和第一信号的信号类型中至少之一。
进一步地，本公开实施例中，UE根据第一信号的配置信息，检测基站发送的本UE对应的第一信号，包括：
根据第一信号的时域位置信息和频域位置信息，接收基站发送的第一信号；
根据第一信号的信号类型信息，得到第一信号，并利用该第一信号对接收到的基站发送的第一信号进行相关检测，以确定是否接收到基站发送的本UE的第一信号。
进一步地，本公开实施例中，根据第一信号的时域位置和频域位置，接收基站发送的第一信号，包括：
根据第一信号的频域位置，确定第一信号所在的窄带索引和/或第一信号所在的资源块索引；根据第一信号的频域位置得到第一信号所占的子载波个数，当第一信号的频域位置为第一信号所在的窄带索引，那么子载波个数为窄带对应的子载波个数，第一信号的频域位置为第一信号所在的资源块索引，那么子载波个数为资源块对应的子载波个数。
本公开实施例中，频域位置信息可通过高层信令指示得到。
根据第一信号的时域位置，确定第一信号所在的子帧和/或第一信号所在的OFDM符号。
具体地，本公开实施例中，确定第一信号所在的OFDM符号为：子帧内第3个OFDM符号和/或第4个OFDM符号，或，子帧内从第g个OFDM符号开 始到子帧结束，其中g的值由高层信令配置。
进一步地，本公开实施例中，确定第一信号所在子帧的方式包括但不限于为：
方式一：根据信令指示的第一信号的周期和/或偏移确定第一信号所在的子帧；
方式二：根据PDCCH对应的搜索空间起始位置，确定第一信号所在的子帧；
具体地，本公开实施例中，根据PDCCH对应的搜索空间起始位置，确定所述第一信号所在的子帧为子帧{n-k 0,n-k 1,…,n-k X-1}。其中，n为PDCCH对应的搜索空间的起始子帧。
方式三：根据PDCCH对应的重复次数的起始位置，确定第一信号所在的子帧；
具体地，本公开实施例中，根据PDCCH对应的重复次数的起始位置，确定所述第一信号所在的子帧为子帧{m-k 0,m-k 1,…,m-k X-1}，其中m为PDCCH对应的重复次数的起始子帧，PDCCH对应的重复次数的取值为{1,2,…,Rmax}。
方式四：根据PDCCH的起始位置，确定所述第一信号所在的子帧为子帧{h-k 0,h-k 1,…,h-k X-1}；h为PDCCH起始子帧；
其中，k 0、k 1、…、k X-1的值为基站和UE预先约定的值，或者为信令指示的值；X的值根据如下参数中的一种或多种有关：终端的覆盖等级，所述PDCCH对应的重复次数的最大值Rmax和所述PDCCCH对应的搜索空间的周期。
进一步地，本公开实施例中，第一信号的信号类型包含以下至少之一：第一信号对应的序列和序列配置信息。
其中，第一信号对应的序列为如下序列中的一种或多种：沃什序列、 ZC序列、PN序列和CGS。
在本公开的一个具体实施例中，当第一信号对应的序列包含ZC序列时，序列配置信息包括：ZC序列长度、ZC序列的根序列、ZC序列对应的循环移位值和ZC序列的循环移位间隔值的确定方式。
具体地，本实施例中，确定ZC序列长度、ZC序列的根序列、ZC序列对应的循环移位值和ZC序列的循环移位间隔值的方式包括：
根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数，确定ZC序列长度；
ZC序列的根序列根据小区索引得到；
ZC序列的循环移位值根据以下至少之一确定：小区索引，UE的索引，高层信令指示的偏移值，第一信号所在子帧的索引，第一信号所在时隙的索引，第一信号所在OFDM符号的索引；
根据高层信令得到循环移位间隔。
此时，根据第一信号的信号类型信息，得到第一信号，包括：
根据序列配置信息，确定ZC序列长度、ZC序列的根序列、ZC序列对应的循环移位值和ZC序列的循环移位间隔值；
根据所述ZC序列长度、ZC序列的根序列、ZC序列对应的循环移位值和ZC序列的循环移位间隔值，得到第一信号。
在本公开的又一具体实施例中，当第一信号对应的序列包含CGS时，序列配置信息包括：序列长度、CGS对应的循环移位值和CGS对应的循环移位间隔值的确定方式。
具体地，本实施例中，确定序列长度、CGS对应的循环移位值和CGS对应的循环移位间隔值的方式包括：
根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定CGS的长度；
循环移位值根据以下至少之一确定：小区的索引，UE的索引，高层信令指示的偏移值，第一信号所在子帧的索引，第一信号所在时隙的索引，第一信号所在OFDM符号的索引；
根据高层信令得到循环移位间隔。
此时，根据第一信号的信号类型，得到第一信号，包括：
根据序列配置信息，确定CGS的序列长度、CGS对应的循环移位值和CGS的循环移位间隔值；
根据CGS的序列长度、CGS对应的循环移位值和CGS的循环移位间隔值，得到第一信号。
在本公开的又一具体实施例中，当第一信号对应的序列包含沃什序列时，序列配置信息包括：沃什序列长度和沃什序列的索引的确定方式。
具体地，本实施例中，根据第一信号对应的时域OFDM符号个数确定沃什序列长度；
根据小区索引，UE的索引，信令指示的值，第一信号所在子帧的索引中的一种或多种，得到沃什序列的索引。
此时，根据第一信号的信号类型，得到第一信号，包括：
根据序列配置信息，确定沃什序列的长度和索引；
根据所述沃什序列的长度和索引，得到第一信号。
进一步地，本公开实施例中，当第一信号对应的序列还包括PN序列时，所述序列配置信息包括：PN序列的初始值根据小区索引确定。
可选地，在本实施例中，当高层信令的低功耗模式开启时，终端先检测第一信号，再检测对应的PDCCH，否则直接检测PDCCH；或者，当高层信令指示低功耗模式时，终端先检测第一信号，再检测对应的PDCCH；高层信令指示正常模式时，终端直接检测PDCCH；或者，在t毫秒周期内的t1毫秒，终端先检测第一信号，再检测对应的PDCCH；在t毫秒周期内 的其他时刻，终端直接检测PDCCH。
综上所述，采用本公开实施例所述方法，对于UE来说，只有检测到基站发送至本UE的第一信号，才进行PDCCH的盲检测，可见，本公开通过引入第一信号，可以使低功耗终端或者处于低功耗模式的UE进一步降低功耗。
在本公开的第三实施例中，提供一种下行控制信道的传输方法，如图3所示，包括如下步骤：
步骤S301，基站根据第一信号的频域位置，确定第一信号所在的窄带索引和第一信号所在的资源块索引；
步骤S302，基站根据第一信号的时域位置，确定第一信号所在的子帧和第一信号所在的OFDM符号；
其中，第一信号的时域位置指示基站如何确定第一信号所在的子帧和第一信号所在的OFDM符号。
本实施例中，第一信号的时域位置指示基站根据高层信令指示的第一信号的周期和偏移，确定第一信号所在的子帧，以及指示基站第一信号所在的OFDM符号为第3个OFDM符号。
步骤S303，基站根据第一信号的信号类型，得到第一信号，并根据确定的第一信号所在窄带索引、第一信号所在资源块索引、第一信号所在子帧和第一信号所在的OFDM符号，向一个或多个UE发送第一信号。
本实施例中，假设高层信令配置的第一信号的周期为T，偏移为0，则第一信号所在的子帧为{子帧z，子帧z+1，…}，假设基站发送一个或多个UE对应的物理下行控制信道所在的搜索空间为搜索空间y+1，那么基站在第一个第一信号所在的子帧z上发送第一信号，具体如图4所示。
步骤S304，UE根据第一信号的频域位置和时域位置，接收基站发送的第一信号；
步骤S305，UE根据第一信号的信号类型，得到第一信号，并利用该第一信号对接收到的基站发送的第一信号进行相关检测，当检测到能量峰值时，确定接收到发送至本UE的第一信号。
本公开实施例中，UE在子帧z上检测到对应的第一信号，那么从搜索空间y开始进行盲检测，直到得到对应的PDCCH。也就是先检测搜索空间y，再检测搜索空间y+1。
UE在子帧z+1上没有检测到对应的第一信号，那么在下一个周期T内不进行PDCCH的盲检测。
其中，盲检测PDCCH的方法属于现有技术，这里不在赘述；其中搜索空间的起始子帧的获得方法属于现有技术，例如，对于MTC系统，PDCCH对应的搜索空间的起始子帧的索引满足
Figure PCTCN2018080360-appb-000001
对于NB-IoT系统，PDCCH对应的搜索空间的起始子帧的索引满足
Figure PCTCN2018080360-appb-000002
其中，n f为无线帧索引，n s为时隙索引，
Figure PCTCN2018080360-appb-000003
G MPDCCH的值由高层信令配置；
Figure PCTCN2018080360-appb-000004
G NPDCCH，α的值由高层信令配置。
在本公开的第四实施例中，提供一种下行控制信道的传输方法，继续如图3所示，包括如下步骤：
步骤S301，基站根据第一信号的频域位置，确定第一信号所在的窄带索引和第一信号所在的资源块索引；
步骤S302，基站根据第一信号的时域位置，确定第一信号所在的子帧和第一信号所在的OFDM符号；
本实施例中，第一信号的时域位置指示基站根据物理下行控制信道对应的搜索空间起始位置，确定第一信号所在的子帧，以及指示第一信号所在的OFDM符号为第4个OFDM符号。
步骤S303，基站根据第一信号的信号类型，得到第一信号，并根据确 定的第一信号所在窄带索引、第一信号所在资源块索引、第一信号所在子帧和第一信号所在的OFDM符号，向一个或多个UE发送第一信号。
本公开实施例中，令搜索空间的起始子帧为子帧n，那么第一信号所在的子帧为子帧{n-k 0,n-k 1,…,n-k x-1}。
假设X＝0，k的取值为固定值1，如图5所示，搜索空间y的起始子帧为子帧ny，搜索空间y+1的起始子帧为子帧ny+1，搜索空间y+2的起始子帧为子帧ny+2。假设基站发送UE A对应的物理下行控制信道所在的搜索空间为搜索空间y+1；那么基站在子帧ny+1-1上发送对应的第一信号。
或者，假设OFDM符号为4，X＝1(基站和终端约定的值)，k 0＝0，那么第一信号位于搜索空间的起始子帧的第4个符号上，具体如图6所示。
或者，假设OFDM符号为4，X＝1，高层信令指示k 0＝1，那么第一信号位于搜索空间的起始子帧之前一个子帧的第4个符号上，具体如图7所示。
或者，假设OFDM符号为4，X＝Rmax，假设Rmax＝8，且对应的高层信令指示{k0,k1,…,k7}的值为{1,2,3,4,5,6,7,8}，那么第一信号的所在的子帧为搜索空间的起始子帧之前的第1、第2、第3、第4、第5、第6、第7和第8个子帧的第4个符号上，具体如图8所示。
步骤S304，UE根据第一信号的频域位置和时域位置，接收基站发送的第一信号；
步骤S305，UE根据第一信号的信号类型，得到第一信号，并利用该第一信号对接收到的基站发送的第一信号进行相关检测，当检测到能量峰值时，确定接收到发送至本UE的第一信号。
本公开实施例中，UE(即UE A)在子帧ny-1检测第一信号且没有检测到对应的第一信号，那么UE A不在搜索空间y内盲检测PDCCH，UE A在子帧ny+1-1检测第一信号且检测到对应的第一信号，那么UE A在搜索 空间y+1内盲检测PDCCH；UE A在子帧ny+2-1检测第一信号且没有检测到对应的第一信号，那么UE A不在搜索空间内盲检测PDCCH。
在本公开第五实施例中，提供一种下行控制信道的传输方法，继续如图3所示，包括如下步骤：
步骤S301，基站根据第一信号的频域位置，确定第一信号所在的窄带索引和第一信号所在的资源块索引；
步骤S302，基站根据第一信号的时域位置，确定第一信号所在的子帧和第一信号所在的OFDM符号；
本实施例中，第一信号的时域位置指示基站根据物理下行控制信道对应的重复次数，确定第一信号所在的子帧，其中，根据物理下行控制信道对应的重复次数确定第一信号包含：搜索空间内重复次数Ri的起始子帧为子帧m，那么第一信号所在的子帧为子帧m-k；以Rmax＝8为例，那么重复次数R1＝1的起始子帧为{子帧m，子帧m+1，子帧m+2，子帧m+3，子帧m+4，子帧m+5，子帧m+6，子帧m+7}，重复次数为R2＝2的起始子帧为{子帧m，子帧m+2，子帧m+4，子帧m+6}；重复次数为R3＝4的起始子帧为{子帧m，子帧m+4}，重复次数为R4的起始子帧为{子帧m}；假设k＝0。
步骤S303，基站根据第一信号的信号类型，得到第一信号，并根据确定的第一信号所在窄带索引、第一信号所在资源块索引、第一信号所在子帧和第一信号所在的OFDM符号，向一个或多个UE发送第一信号。
本公开实施例中，假设基站发送UE A对应的下行控制信道对应的重复次数为R2；那么基站在子帧{子帧m，子帧m+2，子帧m+4，子帧m+6}发送对应的第一信号。
步骤S304，UE根据第一信号的频域位置和时域位置，接收基站发送的第一信号；
步骤S305，UE根据第一信号的信号类型，得到第一信号，并利用该第 一信号对接收到的基站发送的第一信号进行相关检测，当检测到能量峰值时，确定接收到发送至本UE的第一信号。
本公开实施例中，UE(即UE A)在{子帧m，子帧m+1，子帧m+2，子帧m+3，子帧m+4，子帧m+5，子帧m+6，子帧m+7}上检测第一信号且在{子帧m，子帧m+2，子帧m+4，子帧m+6}上检测到第一信号，那么UE A选择重复次数为R2的候选集检测。
在本公开第六实施例中，提供一种下行控制信道的传输方法，继续如图3所示，包括如下步骤：
步骤S301，基站根据第一信号的频域位置，确定第一信号所在的窄带索引和第一信号所在的资源块索引；
步骤S302，基站根据第一信号的时域位置，确定第一信号所在的子帧和第一信号所在的OFDM符号；
本实施例中，第一信号的时域位置指示基站根据物理下行控制信道确定第一信号所在的子帧，其中，根据物理下行控制信道确定第一信号包含：物理下行控制信道所在的子帧为p，假设X＝1，k＝0，那么在子帧p上发送第一信号。
步骤S303，基站根据第一信号的信号类型，得到第一信号，并根据确定的第一信号所在窄带索引、第一信号所在资源块索引、第一信号所在子帧和第一信号所在的OFDM符号，向一个或多个UE发送第一信号。
本公开实施例中，假设基站发送UE A对应的下行控制信道在子帧p，那么基站在子帧p发送对应的第一信号。
步骤S304，UE根据第一信号的频域位置和时域位置，接收基站发送的第一信号；
步骤S305，UE根据第一信号的信号类型，得到第一信号，并利用该第一信号对接收到的基站发送的第一信号进行相关检测，当检测到能量峰值 时，确定接收到发送至本UE的第一信号。
本公开实施例中，UE(即UE A)从PDCCH对应的搜索空间开始盲检测每一个PDCCH，如果在子帧上没有检测到第一信号，那么不检测对应的PDCCH，只有在子帧p上检测第一信号，那么UE检测对应的PDCCH。
在本公开的第七实施例中，提供一种下行控制信道的传输方法，继续如图3所示，所述方法包括如下步骤：
步骤S301，基站根据第一信号的频域位置，确定第一信号所在的窄带索引和第一信号所在的资源块索引；
步骤S302，基站根据第一信号的时域位置，确定第一信号所在的子帧和第一信号所在的OFDM符号；
步骤S303，基站根据第一信号的信号类型，得到第一信号，并根据确定的第一信号所在窄带索引、第一信号所在资源块索引、第一信号所在子帧和第一信号所在的OFDM符号，向一个或多个UE发送第一信号。
具体地，在本公开的一个示例性实施例中，假设MTC系统中，终端的接收带宽最小为1.4MHz，对应72个子载波且第一信号的窄带索引为窄带1，那么第一信号对应的子载波个数和接收带宽相同。第一信号的信号类型指示第一信号的序列为ZC序列，指示的序列配置信息为，ZC序列的长度根据第一信号对应的子载波个数确定，那么序列的长度为71，通过循环移位得到72长的序列；对于序列长度为71的ZC序列，对应70条根序列，其中根序列索引和小区索引之间的关系预先定义；通过信令配置循环移位对应的间隔；终端索引和序列循环移位之间的对应关系预先定义。
在示例中，如果第一信号对应多个OFDM符号(多个OFDM符号来自相同的子帧和/或不同的子帧)且序列的长度根据第一信号对应的子载波个数确定，多个OFDM符号上的序列通过重复得到，假设第一信号对应子帧w的第3个OFDM符号和子帧w+1的第3个OFDM符号，那么子帧w上 的第一信号对应的序列为{R(0),R(1),…,R(71)}，子帧w+1上的第一信号对应的序列为{R(0),R(1),…,R(71)}；如果第一信号对应多个OFDM符号且序列的长度根据第一信号对应的子载波个数和OFDM符号确定，那么序列长度根据72*OFDM符号个数确定，假设OFDM符号个数为2，那么通过循环移位生成序列为{R(0),R(1),…,R(143)}，假设第一信号对应子帧w的第3个OFDM符号和子帧w+1的第3个OFDM符号，那么子帧w上的第一信号对应的序列为{R(0),R(1),…,R(71)}，子帧w+1上的第一信号对应的序列为{R(72),R(1),…,R(143)}。
本示例中，假设只唤醒UE A且UE A所处的小区索引为Cell_ID 1，UE A对应的终端索引为UE_ID A，则：
基站发送UE A对应的第一信号时，根据Cell_ID 1选择根序列，根据UE_ID A选择所述根序列对应的循环移位。
步骤S304，UE根据第一信号的频域位置和时域位置，接收基站发送的第一信号；
步骤S305，UE根据第一信号的信号类型信息，得到第一信号，并利用该第一信号对接收到的基站发送的第一信号进行相关检测，当检测到能量峰值时，确定接收到发送至本UE的第一信号。
具体地，本实施例中，假设所述UE为UE A，则UE A根据Cell_ID 1确定根序列，根据UE_ID A确定对应的循环移位，并根据根序列、循环移位的间隔、循环移位得到对应的第一信号A；
UE A根据得到的第一信号A对接收到的第一信号进行相关检测，检测到能量峰值，UE A盲检测MPDCCH；
同理，其他UE根据同样的方法得到第一信号，使用得到的第一信号对接收到的第一信号进行相关检测，如果无法检测到能量峰值，则UE不盲检测PDCCH。
在本公开第八实施例中，提供一种下行控制信道的传输方法，继续如图3所示，所述方法包括如下步骤：
步骤S301，基站根据第一信号的频域位置，确定第一信号所在的窄带索引和第一信号所在的资源块索引；
其中，第一信号的频域位置可以是基站和UE之间预先约定的信息。
步骤S302，基站根据第一信号的时域位置，确定第一信号所在的子帧和第一信号所在的OFDM符号；
其中，第一信号的时域位置信息可以是基站和UE之间预先约定的信息。该信息指示基站如何确定第一信号所在的子帧和第一信号所在的OFDM符号。
步骤S303，基站根据第一信号的信号类型，得到第一信号，并根据确定的第一信号所在窄带索引、第一信号所在资源块索引、第一信号所在子帧和第一信号所在的OFDM符号，向一个或多个UE发送第一信号。
具体地，在本公开的一个示例性实施例中，假设MTC系统中，终端的接收带宽最小为1.4MHz，对应72个子载波，第一信号的窄带索引为窄带1，那么第一信号对应的子载波个数和接收带宽相同。第一信号的信号类型指示第一信号的序列为ZC序列，指示的序列配置信息为：ZC序列的长度根据第一信号对应子载波个数确定，那么序列的长度为63，通过循环移位得到72长的序列；对于序列长度为63的ZC序列，对应62条根序列，其根序列索引和小区索引之间的关系预先定义；通过信令配置循环移位对应的间隔；高层信令指示终端对应的序列循环移位。
本示例中，假设只唤醒UE A且UE A所处的小区索引为Cell_ID 1，高层信令指示的序列循环移位为CS_A，则：
基站发送UE A对应的第一信号时，根据Cell_ID 1选择根序列，根据CS_A选择所述根序列对应的循环移位。
步骤S304，UE根据第一信号的频域位置和时域位置，接收基站发送的第一信号；
步骤S305，UE根据第一信号的信号类型信息，得到第一信号，并利用该第一信号对接收到的基站发送的第一信号进行相关检测，当检测到能量峰值时，确定接收到发送至本UE的第一信号。
具体地，本实施例中，假设所述UE为UE A，则UE A根据Cell_ID 1确定根序列，根据CS_A确定对应的循环移位，并根据根序列、循环移位的间隔、循环移位得到对应的第一信号A；
UE A根据得到的第一信号A对接收到的第一信号进行相关检测，检测到能量峰值，UE A盲检测PDCCH；
同理，其他UE根据同样的方法得到第一信号，使用得到的第一信号对接收到的第一信号进行相关检测，如果无法检测到能量峰值，则UE不盲检测PDCCH。
在本公开的第九实施例中，提供一种下行控制信道的传输方法，继续如图3所示，所述方法包括如下步骤：
步骤S301，基站根据第一信号的频域位置，确定第一信号所在的窄带索引和第一信号所在的资源块索引；
其中，第一信号的频域位置可以是基站和UE之间预先约定的信息。
步骤S302，基站根据第一信号的时域位置，确定第一信号所在的子帧和第一信号所在的OFDM符号；
其中，第一信号的时域位置信息可以是基站和UE之间预先约定的信息。该信息指示基站如何确定第一信号所在的子帧和第一信号所在的OFDM符号。
步骤S303，基站根据第一信号的信号类型，得到第一信号，并根据确定的第一信号所在窄带索引、第一信号所在资源块索引、第一信号所在子 帧和第一信号所在的OFDM符号，向一个或多个UE发送第一信号。
具体地，在本公开的一个示例性实施例中，假设MTC系统中，终端的接收带宽最小为1.4MHz，对应72个子载波。第一信号的窄带索引为窄带1，那么第一信号对应的子载波个数和接收带宽相同，第一信号的信号类型指示第一信号的序列为ZC序列，指示的序列配置信息为：ZC序列的长度根据第一信号对应的子载波个数确定，序列的长度为67，通过循环移位得到72长的序列；对于序列长度为67的ZC序列，对应60条根序列，其中根序列索引和小区索引之间的关系预先定义；通过信令配置循环移位对应的间隔；根据高层信令指示和小区索引得到序列循环移位。
本示例中，假设只唤醒UE A且UE A所处的小区索引为Cell_ID 1，高层信令指示的序列循环移位为CS_A1，则：
基站只发送UE A对应的第一信号时，根据Cell_ID 1选择根序列，根据CS_A1和Cell_ID 1选择所述根序列对应的循环移位CS_A。
具体地，本公开实施例中，根据CS_A1和Cell_ID1确定对应的循环移位CS_A是指，根据Cell_ID1生成R长的PN序列，将生成的PN序列相加得到CS_A2，那么CS_A为CS_A1，CS_CA2相加后对最大循环移位取模之后得到的值。CS_A中含有小区索引的信息，可以达到小区间干扰随机化的效果。
步骤S304，UE根据第一信号的频域位置和时域位置，接收基站发送的第一信号；
步骤S305，UE根据第一信号的信号类型，得到第一信号，并利用该第一信号对接收到的基站发送的第一信号进行相关检测，当检测到能量峰值时，确定接收到发送至本UE的第一信号。
具体地，本实施例中，假设所述UE为UE A，则UE A根据Cell_ID 1确定根序列，根据CS_A1和Cell_ID1确定对应的循环移位(确定方式见本 实施例的步骤S303)，并根据根序列、循环移位的间隔、循环移位得到对应的第一信号A。
UE A根据得到的第一信号A对接收到的第一信号进行相关检测，检测到能量峰值，UE A盲检测PDCCH；
同理，其他UE根据同样的方法得到第一信号，使用得到的第一信号对接收到的第一信号进行相关检测，如果无法检测到能量峰值，则UE不盲检测PDCCH。
在本公开的第十实施例中，提供一种下行控制信道的传输方法，继续如图3所示，所述方法包括如下步骤：
步骤S301，基站根据第一信号的频域位置，确定第一信号所在的窄带索引和第一信号所在的资源块索引；
其中，第一信号的频域位置可以是基站和UE之间预先约定的信息。
步骤S302，基站根据第一信号的时域位置，确定第一信号所在的子帧和第一信号所在的OFDM符号；
其中，第一信号的时域位置信息可以是基站和UE之间预先约定的信息。该信息指示基站如何确定第一信号所在的子帧和第一信号所在的OFDM符号。
步骤S303，基站根据第一信号的信号类型，得到第一信号，并根据确定的第一信号所在窄带索引、第一信号所在资源块索引、第一信号所在子帧和第一信号所在的OFDM符号，向一个或多个UE发送第一信号。
具体地，在本公开的一个示例性实施例中，假设MTC系统中，终端的接收带宽最小为1.4MHz，对应72个子载波，第一信号的窄带索引为窄带1，那么第一信号对应的子载波个数和接收带宽相同。第一信号的信号类型指示第一信号的序列为ZC序列，指示的序列配置信息为：ZC序列的长度根据第一信号子载波个数确定，序列的长度为71，通过循环移位得到72长的 序列；对于序列长度为71的ZC序列，对应70条根序列，其根序列索引和小区索引之间的关系预先定义；根据小区索引和第一信号所在OFDM符号索引得到序列循环移位，或者，根据高层信令指示、小区索引和第一信号所在OFDM符号索引得到序列循环移位，通过信令配置循环移位对应的间隔。
本示例中，假设只唤醒UE A且UE A所处的小区索引为Cell_ID 1，高层信令指示的序列循环移位为CS_A1，第一信号在一个子帧中占OFDM符号3和OFDM符号4，那么有：
基站只发送UE A对应的第一信号时，根据Cell_ID 1选择根序列，根据小区索引、第一信号所在OFDM符号索引，得到根序列对应的序列循环移位，或者，根据高层信令指示、小区索引和第一信号所在OFDM符号索引得到根序列对应的序列循环移位。
其中，根据小区索引、第一信号所在OFDM符号索引，得到根序列对应的循环移位的方式包括：
根据Cell_ID1和OFDM符号索引生成R长的PN序列，将生成的PN序列相加得到CS_A2，即OFDM符号3对应CS_A2为CS_A2_3，OFDM符号4对应的CS_A2为CS_A2_4，
那么OFDM符号3的CS_A为CS_A1、CS_A2_3相加后对最大循环移位取模之后得到的值；OFDM符号4的CS_A为CS_A1、CS_A2_4相加后对最大循环移位取模之后得到的值。
根据高层信令指示、小区索引和第一信号所在OFDM符号索引得到根序列对应的序列循环移位的方式包括但不限于为：
方式一：假设信令指循环移位为CS_A1，那么OFDM符号3上的CS_A1_3为CS_A1，那么OFDM符号4上的CS_A1_4的取值为通过预先定义的关系(CS_A1_3和CS_A1_4的关系)根据CS_A1_3得到符号4上的 CS_A1_4，或者根据CS_A1和预先定义的关系(CS_A1和CS_A1_3，CS_A1_4的关系)得到CS_A1_3和CS_A1_4。
根据Cell_ID1生成R长的PN序列，将生成的PN序列相加得到CS_A2，
那么，OFDM符号3的CS_A为CS_A1_3、CS_A2相加后对最大循环移位取模之后得到的值；OFDM符号4的CS_A为CS_A1_4、CS_A2相加后对最大循环移位取模之后得到的值。
方式二：假设信令指循环移位为CS_A1，那么OFDM符号3上的CS_A1_3为CS_A1，那么OFDM符号4上的CS_A1_4的取值为通过预先定义的关系(CS_A1_3和CS_A1_4的关系)根据CS_A1_3得到符号4上的CS_A1_4，或者根据CS_A1和预先定义的关系(CS_A1和CS_A1_3、CS_A1_4的关系)得到CS_A1_3和CS_A1_4。
根据Cell_ID1和OFDM符号索引生成R长的PN序列，将生成的PN序列相加得到CS_A2，即OFDM符号3对应CS_A2为CS_A2_3，OFDM符号4对应的CS_A2为CS_A2_4。
那么，OFDM符号3的CS_A为CS_A1_3、CS_A2_3相加后对最大循环移位取模之后得到的值；OFDM符号4的CS_A为CS_A1_4、CS_A2_4相加后对最大循环移位取模之后得到的值。
当然，本公开实施例中，还可以根据其他方式得到根序列对应的序列循环移位，例如，第一信号在多个子帧且每个子帧中占1个OFDM符号，那么循环移位还可以根据高层信令指示、小区索引、子帧索引得到，即将上述OFDM符号索引换成子帧索引即可。
又例如，第一信号在多个子帧且每个子帧中占2个OFDM符号，那么循环移位还可以根据高层信令指示、小区索引、子帧索引和OFDM索引得到，即在前述的基础上再加入子帧索引域用来生成CS_A1或CS_A2或CS_A。
步骤S304，UE根据第一信号的频域位置和时域位置，接收基站发送的第一信号；
步骤S305，UE根据第一信号的信号类型，得到第一信号，并利用该第一信号对接收到的基站发送的第一信号进行相关检测，当检测到能量峰值时，确定接收到发送至本UE的第一信号。
其中，UE根据第一信号的信号类型，得到第一信号的方式与基站侧相同，在此不再赘述。
在本公开的第十一实施例中，提供一种下行控制信道的传输方法，继续如图3所示，所述方法包括如下步骤：
步骤S301，基站根据第一信号的频域位置，确定第一信号所在的窄带索引和第一信号所在的资源块索引；
其中，第一信号的频域位置可以是基站和UE之间预先约定的信息。
步骤S302，基站根据第一信号的时域位置，确定第一信号所在的子帧和第一信号所在的OFDM符号；
其中，第一信号的时域位置可以是基站和UE之间预先约定的信息。该信息指示基站如何确定第一信号所在的子帧和第一信号所在的OFDM符号。
步骤S303，基站根据第一信号的信号类型，得到第一信号，并根据确定的第一信号所在窄带索引、第一信号所在资源块索引、第一信号所在子帧和第一信号所在的OFDM符号，向一个或多个UE发送第一信号。
具体地，在本公开的一个示例性实施例中，假设MTC系统中，终端的接收带宽最小为1.4MHz，对应72个子载波。第一信号的PRB索引为PRB#1，那么第一信号对应的子载波个数为12，第一信号的信号类型指示第一信号的序列为CGS和PN序列，指示的序列配置信息为：CGS的长度根据第一信号对应的子载波个数确定，那么序列的长度为12，通过信令配置循环移 位对应的间隔；终端索引和序列循环移位之间的对应关系预先定义。如果第一信号对应多个OFDM符号且序列的长度根据第一信号对应的子载波个数确定，序列长度仍为12，为{R(0),R(1),…,R(11)}，多个OFDM符号上的序列通过重复得到(或者通过沃什序列扩展)，假设第一信号对应子帧w的第3个OFDM符号和子帧w+1的第3个OFDM符号，那么子帧w上的第一信号对应的序列为{R(0),R(1),…,R(11)}，子帧w+1上的第一信号对应的序列为{R(0),R(1),…,R(11)}；如果第一信号对应多个OFDM符号且序列的长度根据第一信号对应的子载波个数和OFDM符号确定，那么序列长度仍为12*OFDM符号个数，假设OFDM符号个数为2，那么序列为{R(0),R(1),…,R(23)}，假设第一信号对应子帧w的第3个OFDM符号和子帧w+1的第3个OFDM符号，那么子帧w上的第一信号对应的序列为{R(0),R(1),…,R(11)}，子帧w+1上的第一信号对应的序列为{R(12),R(1),…,R(23)}。
本示例中，假设只唤醒UE A且UE A所处的小区索引为Cell_ID 1，UE A对应的终端索引为UE_ID A，则：
基站发送UE A对应的第一信号时，Cell_ID 1作为初始值生成PN序列，根据UE_ID A确定所述CGS对应的循环移位；发送PN序列*CGS作为第一信号。
在本公开的又一示例性实施例中，假设NB-IoT系统中，终端的接收带宽最小为200KHz，对应12个子载波。第一信号的信号类型指示第一信号的序列为CGS和PN序列，指示的序列配置信息为：CGS的长度根据第一信号对应的子载波个数确定，那么序列的长度为12；通过信令配置循环移位对应的间隔；终端索引和序列循环移位之间的对应关系预先定义。
本示例中，假设只唤醒UE A且UE A所处的小区索引为Cell_ID 1，UE A对应的终端索引为UE_ID A，则：
基站发送UE A对应的第一信号时，Cell_ID 1作为初始值生成PN序列，根据UE_ID A确定所述CGS对应的循环移位；发送PN序列*CGS作为第一信号。
步骤S304，UE根据第一信号的频域位置和时域位置，接收基站发送的第一信号；
步骤S305，UE根据第一信号的信号类型，得到第一信号，并利用该第一信号对接收到的基站发送的第一信号进行相关检测，当检测到能量峰值时，确定接收到发送至本UE的第一信号。
具体地，本实施例中，假设所述UE为UE A，则UE A根据Cell_ID1生成的PN序列，根据UE_ID A确定所述CGS对应的循环移位，根据循环移位的间隔和循环移位得到对应的CGS；根据PN序列和CGS得到第一信号A；UE A根据得到的第一信号A对接收到的第一信号进行相关检测，检测到能量峰值，终端盲检测PDCCH。
同理，其他UE根据同样的方法得到第一信号，并根据得到的第一信号对接收到的第一信号进行相关检测，如果检测不到能量峰值，则UE不盲检测PDCCH。
当然，本实施例中的序列循环移位的确定方式也可以采用第七、八、九任意一实施例中所述的方式，这里不再赘述。
另外，需要说明的是，上述实施例中都是以只唤醒一个终端为例的，基站如果要唤醒多个终端，也可以在同一时频位置上发送将多个终端对应的第一信号；终端根据生成的第一信号对接收的第一信号进行相关检测，如果检测到能量峰值，终端盲检测第一信号对应的PDCCH，否则终端不盲检测PDCCH。
在本公开的第十二实施例中，提供一种下行控制信道的传输装置，应用于基站侧，如图9所示，包括：
第一处理模块910，配置为根据第一信号的配置信息，向一个或多个UE发送第一信号；
第二处理模块920，配置为在第一处理模块910发送所述第一信号后，向所述UE发送所述第一信号对应的PDCCH。
本公开实施例中，第一信号的配置信息包括：第一信号的时域位置、第一信号的频域位置和第一信号的信号类型中至少之一。
进一步地，本公开实施例中：
所述第一信号的时域位置至少包括如下之一：第一信号所在子帧和第一信号所在OFDM符号；
所述第一信号的频域位置至少包括如下之一：第一信号所在的窄带索引和第一信号所在的资源块索引；
所述第一信号的信号类型至少包括如下之一：第一信号对应的序列和序列配置信息。
其中，第一信号所在OFDM符号包括：子帧内第三个OFDM符号和/或第四个OFDM符号，或，子帧内从第g个OFDM符号开始到子帧结束，其中g的值由高层信令配置。
进一步地，本公开实施例中，第一信号所在子帧的确定方式包括如下方式之一：
方式一：根据信令指示的第一信号的周期和/或偏移确定所述第一信号所在的子帧；
方式二：根据PDCCH对应的搜索空间起始位置，确定所述第一信号所在的子帧；
具体地，本公开实施例中，根据PDCCH对应的搜索空间起始位置，确定所述所在的子帧为子帧{n-k 0,n-k 1,…,n-k X-1}。
方式三：根据PDCCH对应的重复次数的起始位置，确定第一信号所在 的子帧；
具体地，本公开实施例中，根据PDCCH对应的重复次数的起始位置，确定所述第一信号所在的子帧为子帧{m-k 0,m-k 1,…,m-k X-1}；
方式四：根据PDCCH的起始位置，确定所述第一信号所在的子帧为子帧{h-k 0,h-k 1,…,h-k X-1}；h为PDCCH起始子帧。
其中，PDCCH对应的重复次数为集合{1,2,…,Rmax}中的数值之一，n为PDCCH对应的搜索空间的起始子帧，m为PDCCH对应的重复次数的起始子帧，k 0、k 1、…、k X-1的值为基站和UE预先约定的值，或者为信令指示的值；X的值根据如下参数中的一种或多种有关：终端的覆盖等级，所述PDCCH对应的重复次数的最大值Rmax和所述PDCCCH对应的搜索空间的周期。
进一步地，本公开实施例中，第一信号对应的序列包括如下序列中的一个或多个：沃什序列、ZC序列、PN序列和CGS。
具体地，本公开实施例中，当所述第一信号对应的序列包括ZC序列时，所述序列配置信息包括下信息中的一个或多个：
所述ZC序列长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
所述ZC序列的根序列根据小区索引确定；
所述ZC序列对应的循环移位值根据如下信息中的一个或多个确定：小区索引、UE的索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引和第一信号所在OFDM符号的索引；
所述ZC序列的循环移位间隔值根据高层信令配置确定。
具体地，本公开实施例中，当所述第一信号对应的序列包括CGS时，所述序列配置信息包括下信息中的一个或多个：
所述CGS长度根据第一信号对应的频域子载波个数确定，或者根据第 一信号对应的频域子载波个数和时域OFDM符号个数确定；
所述CGS对应的循环移位值根据如下信息中的一个或多个确定：小区索引、UE的索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引和第一信号所在OFDM符号的索引；
所述CGS的循环移位间隔值根据高层信令配置确定。
具体地，本公开实施例中，当所述第一信号对应的序列包括沃什序列时，所述序列配置信息包括：
所述沃什序列长度根据第一信号对应的时域OFDM符号个数确定；
所述沃什序列的索引根据如下信息中的一个或多个确定：小区索引、UE的索引、信令指示的值、第一信号所在子帧的索引和第一信号所在OFDM符号的索引。
进一步地，本公开实施例中，当第一信号对应的序列还包括PN序列时，所述序列配置信息包括：PN序列的初始值根据小区索引确定。
综上所述，本公开实施例所述装置给出了一种第一信号发送方案，当基站采用该方案发送第一信号时，可以使低功耗终端或者处于低功耗模式的UE进一步降低功耗。
在本公开的第十三实施例中，提供一种下行控制信道的传输装置，应用于UE侧，如图10所示，包括：
信号接收模块1010，配置为根据第一信号的配置信息检测基站发送的本UE对应的第一信号；
信号检测模块1020，配置为在检测到本UE对应的第一信号时，检测该第一信号对应的PDCCH。
本公开实施例中，第一信号的配置信息包括：第一信号的时域位置信息、第一信号的频域位置信息和第一信号的信号类型信息中至少之一。
进一步地，本公开实施例中，信号接收模块1010，具体包括：
接收子模块，配置为根据第一信号的时域位置和频域位置，接收基站发送的第一信号；
确定子模块，配置为根据第一信号的信号类型，得到第一信号，并利用该第一信号对接收到的第一信号进行相关检测，以确定是否检测到本装置所属UE对应的第一信号。
其中，接收子模块，配置为根据第一信号的频域位置，确定第一信号所在的窄带索引和/或第一信号所在的资源块索引；根据第一信号的时域位置，确定第一信号所在的子帧和/或第一信号所在的OFDM符号。
在本公开的一个具体实施例中，接收子模块，配置为：
根据信令指示的第一信号的周期和/或偏移确定第一信号所在的子帧；
或者，根据PDCCH对应的搜索空间起始位置，确定第一信号所在的子帧；
具体地，本公开实施例中，根据PDCCH对应的搜索空间起始位置，确定所述第一信号所在的子帧为子帧{n-k 0,n-k 1,…,n-k X-1}。其中，n为PDCCH对应的搜索空间的起始子帧。
或者，根据PDCCH对应的重复次数的起始位置，确定第一信号所在的子帧；
具体地，本公开实施例中，根据PDCCH对应的重复次数的起始位置，确定所述第一信号所在的子帧为子帧{m-k 0,m-k 1,…,m-k X-1}，其中m为PDCCH对应的重复次数的起始子帧，PDCCH对应的重复次数的取值为{1,2,…,Rmax}。
或者，根据PDCCH的起始位置，确定所述第一信号所在的子帧为子帧{h-k 0,h-k 1,…,h-k X-1}；h为PDCCH起始子帧；
其中，k 0、k 1、…、k X-1的值为基站和UE预先约定的值，或者为信令指示的值；X的值根据如下参数中的一种或多种有关：终端的覆盖等级，所述 PDCCH对应的重复次数的最大值Rmax和所述PDCCCH对应的搜索空间的周期。
进一步地，本公开实施例中，接收子模块确定第一信号所在的OFDM符号可以但不限于为：子帧内第3个OFDM符号和/或第4个OFDM符号，或，子帧内从第g个OFDM符号开始到子帧结束，其中g的值由高层信令配置。。
进一步地，本公开实施例中，第一信号的信号类型包括第一信号对应的序列和/或序列配置信息；
其中，第一信号对应的序列包括如下序列中的一个或多个：沃什序列、ZC序列、PN序列和CGS。
在本公开的一个具体实施例中，当第一信号对应的序列包含ZC序列时，序列配置信息包括：ZC序列长度、ZC序列的根序列、ZC序列对应的循环移位值和ZC序列的循环移位间隔值的确定方式。
具体地，本实施例中，确定ZC序列长度、ZC序列的根序列、ZC序列对应的循环移位值和ZC序列的循环移位间隔值的方式包括：
根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数，确定ZC序列长度；
根据小区索引得到ZC序列的根序列；
根据小区索引，UE的索引，高层信令指示的偏移值，第一信号所在子帧的索引，第一信号所在时隙的索引，第一信号所在OFDM符号索引中的一种或多种得到ZC序列的循环移位值；
根据高层信令得到循环移位间隔。
此时，根据第一信号的信号类型信息，得到第一信号，包括：
根据序列配置信息，确定ZC序列长度、ZC序列的根序列、ZC序列对应的循环移位值和ZC序列的循环移位间隔值；
根据所述ZC序列长度、ZC序列的根序列、ZC序列对应的循环移位值 和ZC序列的循环移位间隔值，得到第一信号。
在本公开的又一具体实施例中，当第一信号对应的序列包含CGS时，序列配置信息包括：序列长度、CGS对应的循环移位值和CGS对应的循环移位间隔值的确定方式。
具体地，本实施例中，确定序列长度、CGS对应的循环移位值和CGS对应的循环移位间隔值的方式包括：
根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定CGS的长度；
根据小区的索引，UE的索引，高层信令指示的偏移值，第一信号所在子帧的索引，第一信号所在时隙的索引，第一信号所在OFDM符号的索引中的一种或多种，确定循环移位值；
根据高层信令得到循环移位间隔。
此时，根据第一信号的信号类型，得到第一信号，包括：
根据序列配置信息，确定CGS的序列长度、CGS对应的循环移位值和CGS的循环移位间隔值；
根据CGS的序列长度、CGS对应的循环移位值和CGS的循环移位间隔值，得到第一信号。
在本公开的又一具体实施例中，第一信号对应的序列可以为沃什序列，此时，序列配置信息包括：沃什序列长度和沃什序列的索引的确定方式。
具体地，本实施例中，根据第一信号对应的时域OFDM符号个数确定沃什序列长度；根据小区索引，UE的索引，信令指示的值，第一信号所在子帧的索引和第一信号所在OFDM符号的索引中的一种或多种，得到沃什序列的索引。
此时，根据第一信号的信号类型，得到第一信号，包括：
根据序列配置信息，确定沃什序列的长度和索引；
根据所述沃什序列的长度和索引，得到第一信号。
进一步地，本公开实施例中，当第一信号对应的序列还包括PN序列时，所述序列配置信息包括：PN序列的初始值根据小区索引确定。
综上所述，采用本公开实施例所述装置的UE，只有检测到基站发送至本UE的第一信号，才进行PDCCH的盲检测，可见，本公开通过引入第一信号，可以使终端以更低的功耗获得下行信息。
在本公开的第十四实施例中，提供一种基站，如图11所示，包括：第一存储器1110和第一处理器1120，其中，第一存储器1110中存储有计算机指令，第一处理器1120通过执行所述计算机指令，从而实现以下方法：
根据第一信号的配置信息，向一个或多个UE发送第一信号；
在发送所述第一信号后，向所述UE发送所述第一信号对应的PDCCH。
本实施例中，对于第一处理器1120的实施方法可以参见第一实施例，在此不再赘述。
综上所述，采用本公开实施例所述的基站，可以使终端以更低的功耗获得下行信息。
在本公开的第十五实施例中，提供一种UE，如图12所示，包括：第二存储器1210和第二处理器1220，其中，第二存储器1210中存储有计算机指令，第二处理器1220通过执行所述计算机指令，从而实现以下方法：
根据第一信号的配置信息检测基站发送的本UE对应的第一信号；
在检测到本UE对应的第一信号时，检测该第一信号对应的PDCCH。
本实施例中，对于第二处理器1220的实施方法可以参见第二实施例，在此不再赘述。
综上所述，采用本公开实施例所述UE，只有检测到基站发送至本UE的第一信号，才进行PDCCH的盲检测，可见，本公开通过引入第一信号， 可以使终端以更低的功耗获得下行信息。
从上面的描述可以看出本公开实施例还提供了一种存储介质，具体可以为计算机可读存储介质，其上存储有计算机指令，计算机指令被处理器执行时实现基站侧方法的步骤。
相应地，本公开实施例还提供了一种存储介质，具体可以为计算机可读存储介质，其上存储有计算机指令，计算机指令被处理器执行时实现UE侧方法的步骤。
显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。
以上所述仅为本公开的优选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。
工业实用性
本公开实施例提供的方案，UE只有检测到基站发送至本UE的第一信号，才进行PDCCH的盲检测，可见，本公开通过引入第一信号，可以使终端以更低的功耗获得下行信息。

Claims (43)

  1. 一种下行控制信道的传输方法，包括：
    基站根据第一信号的配置信息，向一个或多个用户设备UE发送第一信号；
    基站在发送所述第一信号后，向所述UE发送所述第一信号对应的物理下行控制信道PDCCH。
  2. 如权利要求1所述的方法，其中，所述第一信号的配置信息包括：第一信号的时域位置、第一信号的频域位置和第一信号的信号类型中至少之一。
  3. 如权利要求2所述的方法，其中，
    所述第一信号的时域位置至少包括如下之一：第一信号所在子帧和第一信号所在正交频分复用OFDM符号；
    所述第一信号的频域位置至少包括如下之一：第一信号所在的窄带索引，第一信号所在的资源块索引；
    所述第一信号的信号类型至少包括如下之一：第一信号对应的序列，序列配置信息。
  4. 如权利要求3所述的方法，其中，所述第一信号所在子帧的确定方式包括如下方式之一：
    根据信令指示的第一信号的周期和/或偏移确定所述第一信号所在的子帧；
    根据PDCCH对应的搜索空间起始位置，确定所述第一信号所在的子帧为子帧{n-k 0,n-k 1,…,n-k X-1}；
    根据PDCCH对应的重复次数的起始位置，确定所述第一信号所在的子帧为子帧{m-k 0,m-k 1,…,m-k X-1}；
    根据PDCCH的起始位置，确定所述第一信号所在的子帧为子帧 {h-k 0,h-k 1,…,h-k X-1}；
    其中，n为PDCCH对应的搜索空间的起始子帧，m为PDCCH对应的重复次数的起始子帧，h为PDCCH起始子帧，k 0、k 1、…、k X-1的值为基站和UE预先约定的值，或者为信令指示的值；X的值根据如下参数中的一种或多种有关：终端的覆盖等级，所述PDCCH对应的重复次数的最大值和所述PDCCCH对应的搜索空间的周期。
  5. 如权利要求3所述的方法，其中，所述第一信号所在OFDM符号包括：子帧内第三个OFDM符号和/或第四个OFDM符号，或，子帧内从第g个OFDM符号开始到子帧结束，其中g的值由高层信令配置。
  6. 如权利要求3所述的方法，其中，所述第一信号对应的序列包括如下序列中的一个或多个：沃什序列、ZC序列、伪随机噪声PN序列和计算机搜索序列CGS。
  7. 如权利要求6所述的方法，其中，当所述第一信号对应的序列包含ZC序列时，所述序列配置信息包括下信息中的一个或多个：
    所述ZC序列长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
    所述ZC序列的根序列根据小区索引确定；
    所述ZC序列对应的循环移位值根据如下信息中的一个或多个确定：小区索引、UE的索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引和第一信号所在OFDM符号的索引；
    所述ZC序列的循环移位间隔值根据高层信令配置确定。
  8. 如权利要求6所述的方法，其中，当所述第一信号对应的序列包含CGS列，所述序列配置信息包括下信息中的一个或多个：
    所述CGS长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
    所述CGS对应的循环移位值根据如下信息中的一个或多个确定：小区索引、UE的索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引和第一信号所在OFDM符号的索引；
    所述CGS的循环移位间隔值根据高层信令配置确定。
  9. 如权利要求6所述的方法，其中，当所述第一信号对应的序列包括沃什序列时，所述序列配置信息包括：
    所述沃什序列长度根据第一信号对应的时域OFDM符号个数确定；
    所述沃什序列的索引根据如下信息中的一个或多个确定：小区索引、UE的索引、信令指示的值、第一信号所在子帧的索引和第一信号所在OFDM符号的索引。
  10. 根据权利要求7或8或9所述的方法，其中，当所述第一信号对应的序列还包括PN序列时，所述序列配置信息包括：
    所述PN序列的初始值根据小区索引确定。
  11. 一种下行控制信道的传输方法，包括：
    UE根据第一信号的配置信息检测基站发送的所述UE对应的第一信号；
    UE在检测到对应的第一信号时，检测该第一信号对应的物理下行控制信道PDCCH。
  12. 如权利要求11所述的方法，其中，所述第一信号的配置信息包括：第一信号的时域位置、第一信号的频域位置和第一信号的信号类型中至少之一。
  13. 如权利要求12所述的方法，其中，
    所述第一信号的时域位置至少包括如下之一：第一信号所在子帧和第一信号所在正交频分复用OFDM符号；
    所述第一信号的频域位置至少包括如下之一：第一信号所在的窄带索 引，第一信号所在的资源块索引；
    所述第一信号的信号类型至少包括如下之一：第一信号对应的序列，序列配置信息。
  14. 如权利要求13所述的方法，其中，所述第一信号所在子帧的确定方式包括如下方式之一：
    根据信令指示的第一信号的周期和/或偏移确定所述第一信号所在的子帧；
    根据PDCCH对应的搜索空间起始位置，确定所述第一信号所在的子帧为子帧{n-k 0,n-k 1,…,n-k X-1}；
    根据PDCCH对应的重复次数的起始位置，确定所述第一信号所在的子帧为子帧{m-k 0,m-k 1,…,m-k X-1}；
    根据PDCCH的起始位置，确定所述第一信号所在的子帧为子帧{h-k 0,h-k 1,…,h-k X-1}；
    其中，n为PDCCH对应的搜索空间的起始子帧，m为PDCCH对应的重复次数的起始子帧，h为PDCCH起始子帧，k 0、k 1、…、k X-1的值为基站和UE预先约定的值，或者为信令指示的值；X的值根据如下参数中的一种或多种有关：终端的覆盖等级，所述PDCCH对应的重复次数的最大值和所述PDCCCH对应的搜索空间的周期。
  15. 如权利要求13所述的方法，其中，所述第一信号所在OFDM符号包括：子帧内第三个OFDM符号和/或第四个OFDM符号，或，子帧内从第g个OFDM符号开始到子帧结束，其中g的值由高层信令配置。
  16. 如权利要求13所述的方法，其中，所述第一信号对应的序列包括如下序列中的一个或多个：沃什序列、ZC序列、伪随机噪声PN序列和计算机搜索序列CGS。
  17. 如权利要求16所述的方法，其中，当所述第一信号对应的序列包 含ZC序列时，所述序列配置信息包括下信息中的一个或多个：
    所述ZC序列长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
    所述ZC序列的根序列根据小区索引确定；
    所述ZC序列对应的循环移位值根据如下信息中的一个或多个确定：小区索引、UE的索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引和第一信号所在OFDM符号的索引；
    所述ZC序列的循环移位间隔值根据高层信令配置确定。
  18. 如权利要求16所述的方法，其中，当所述第一信号对应的序列包含CGS时，所述序列配置信息包括下信息中的一个或多个：
    所述CGS长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
    所述CGS对应的循环移位值根据如下信息中的一个或多个确定：小区索引、UE的索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引和第一信号所在OFDM符号的索引；
    所述CGS的循环移位间隔值根据高层信令配置确定。
  19. 如权利要求16所述的方法，其中，当所述第一信号对应的序列包括沃什序列时，所述序列配置信息包括：
    所述沃什序列长度根据第一信号对应的时域OFDM符号个数确定；
    所述沃什序列的索引根据如下信息中的一个或多个确定：小区索引、UE的索引、信令指示的值、第一信号所在子帧的索引和第一信号所在OFDM符号的索引。
  20. 根据权利要求17或18或19所述的方法，其中，当所述第一信号对应的序列还包括PN序列时，所述序列配置信息包括：
    所述PN序列的初始值根据小区索引确定。
  21. 一种下行控制信道的传输装置，应用于基站侧，包括：
    第一处理模块，配置为根据第一信号的配置信息，向一个或多个UE发送第一信号；
    第二处理模块，配置为在所述第一处理模块发送所述第一信号后，向所述UE发送所述第一信号对应的物理下行控制信道PDCCH。
  22. 如权利要求21所述的装置，其中，所述第一信号的配置信息包括：第一信号的时域位置、第一信号的频域位置和第一信号的信号类型中至少之一。
  23. 如权利要求22所述的装置，其中，
    所述第一信号的时域位置至少包括如下之一：第一信号所在子帧和第一信号所在正交频分复用OFDM符号；
    所述第一信号的频域位置至少包括如下之一：第一信号所在的窄带索引，第一信号所在的资源块索引；
    所述第一信号的信号类型至少包括如下之一：第一信号对应的序列，序列配置信息。
  24. 如权利要求23所述的装置，其中，所述第一信号所在子帧的确定方式包括如下方式之一：
    根据信令指示的第一信号的周期和/或偏移确定所述第一信号所在的子帧；
    根据PDCCH对应的搜索空间起始位置，确定所述第一信号所在的子帧为子帧{n-k 0,n-k 1,…,n-k X-1}；
    根据PDCCH对应的重复次数的起始位置，确定所述第一信号所在的子帧为子帧{m-k 0,m-k 1,…,m-k X-1}；
    根据PDCCH的起始位置，确定所述第一信号所在的子帧为子帧{h-k 0,h-k 1,…,h-k X-1}；
    其中，n为PDCCH对应的搜索空间的起始子帧，m为PDCCH对应的重复次数的起始子帧，h为PDCCH起始子帧，k 0、k 1、…、k X-1的值为基站和UE预先约定的值，或者为信令指示的值；X的值根据如下参数中的一种或多种有关：终端的覆盖等级，所述PDCCH对应的重复次数的最大值和所述PDCCCH对应的搜索空间的周期。
  25. 如权利要求23所述的装置，其中，所述第一信号所在OFDM符号包括：子帧内第三个OFDM符号和/或第四个OFDM符号，或，子帧内从第g个OFDM符号开始到子帧结束，其中g的值由高层信令配置。
  26. 如权利要求23所述的装置，其中，所述第一信号对应的序列包括如下序列中的一个或多个：沃什序列、ZC序列、伪随机噪声PN序列和计算机搜索序列CGS。
  27. 如权利要求26所述的装置，其中，当所述第一信号对应的序列包含ZC序列时，所述序列配置信息包括下信息中的一个或多个：
    所述ZC序列长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
    所述ZC序列的根序列根据小区索引确定；
    所述ZC序列对应的循环移位值根据如下信息中的一个或多个确定：小区索引、UE的索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引和第一信号所在OFDM符号的索引；
    所述ZC序列的循环移位间隔值根据高层信令配置确定。
  28. 如权利要求26所述的装置，其中，当所述第一信号对应的序列包含CGS，所述序列配置信息包括下信息中的一个或多个：
    所述CGS长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
    所述CGS对应的循环移位值根据如下信息中的一个或多个确定：小区 索引、UE的索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引和第一信号所在OFDM符号的索引；
    所述CGS的循环移位间隔值根据高层信令配置确定。
  29. 如权利要求26所述的装置，其中，当所述第一信号对应的序列包括沃什序列时，所述序列配置信息包括：
    所述沃什序列长度根据第一信号对应的时域OFDM符号个数确定；
    所述沃什序列的索引根据如下信息中的一个或多个确定：小区索引、UE的索引、信令指示的值、第一信号所在子帧的索引和第一信号所在OFDM符号的索引。
  30. 根据权利要求27或28或29所述的装置，其中，当所述第一信号对应的序列还包括PN序列时，所述序列配置信息包括：
    所述PN序列的初始值根据小区索引确定。
  31. 一种下行控制信道的传输装置，应用于UE侧，包括：
    信号接收模块，配置为根据第一信号的配置信息检测基站发送的所述UE对应的第一信号；
    信号检测模块，配置为在检测到对应的第一信号时，检测该第一信号对应的物理下行控制信道PDCCH。
  32. 如权利要求31所述的装置，其中，所述第一信号的配置信息包括：第一信号的时域位置、第一信号的频域位置和第一信号的信号类型中至少之一。
  33. 如权利要求32所述的装置，其中，
    所述第一信号的时域位置至少包括如下之一：第一信号所在子帧和第一信号所在正交频分复用OFDM符号；
    所述第一信号的频域位置至少包括如下之一：第一信号所在的窄带索引，第一信号所在的资源块索引；
    所述第一信号的信号类型至少包括如下之一：第一信号对应的序列，序列配置信息。
  34. 如权利要求33所述的装置，其中，所述第一信号所在子帧的确定方式包括如下方式之一：
    根据信令指示的第一信号的周期和/或偏移确定所述第一信号所在的子帧；
    根据PDCCH对应的搜索空间起始位置，确定所述第一信号所在的子帧为子帧{n-k 0,n-k 1,…,n-k X-1}；
    根据PDCCH对应的重复次数的起始位置，确定所述第一信号所在的子帧为子帧{m-k 0,m-k 1,…,m-k X-1}；
    根据PDCCH的起始位置，确定所述第一信号所在的子帧为子帧{h-k 0,h-k 1,…,h-k X-1}；
    其中，n为PDCCH对应的搜索空间的起始子帧，m为PDCCH对应的重复次数的起始子帧，h为PDCCH起始子帧，k 0、k 1、…、k X-1的值为基站和UE预先约定的值，或者为信令指示的值；X的值根据如下参数中的一种或多种有关：终端的覆盖等级，所述PDCCH对应的重复次数的最大值和所述PDCCCH对应的搜索空间的周期。
  35. 如权利要求33所述的装置，其中，所述第一信号所在OFDM符号包括：子帧内第三个OFDM符号和/或第四个OFDM符号，或，子帧内从第g个OFDM符号开始到子帧结束，其中g的值由高层信令配置。
  36. 如权利要求33所述的装置，其中，所述第一信号对应的序列包括如下序列中的一个或多个：沃什序列、ZC序列、伪随机噪声PN序列和计算机搜索序列CGS。
  37. 如权利要求36所述的装置，其中，当所述第一信号对应的序列包含ZC序列时，所述序列配置信息包括下信息中的一个或多个：
    所述ZC序列长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
    所述ZC序列的根序列根据小区索引确定；
    所述ZC序列对应的循环移位值根据如下信息中的一个或多个确定：小区索引、UE的索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引和第一信号所在OFDM符号的索引；
    所述ZC序列的循环移位间隔值根据高层信令配置确定。
  38. 如权利要求36所述的装置，其中，当所述第一信号对应的序列包含CGS时，所述序列配置信息包括下信息中的一个或多个：
    所述CGS长度根据第一信号对应的频域子载波个数确定，或者根据第一信号对应的频域子载波个数和时域OFDM符号个数确定；
    所述CGS对应的循环移位值根据如下信息中的一个或多个确定：小区索引、UE的索引、高层信令指示的偏移值、第一信号所在子帧的索引、第一信号所在时隙的索引和第一信号所在OFDM符号的索引；
    所述CGS的循环移位间隔值根据高层信令配置确定。
  39. 如权利要求36所述的装置，其中，当所述第一信号对应的序列包括沃什序列时，所述序列配置信息包括：
    所述沃什序列长度根据第一信号对应的时域OFDM符号个数确定；
    所述沃什序列的索引根据如下信息中的一个或多个确定：小区索引、UE的索引、信令指示的值、第一信号所在子帧的索引和第一信号所在OFDM符号的索引。
  40. 根据权利要求37或38或39所述的装置，其中，当所述第一信号对应的序列还包括PN序列时，所述序列配置信息包括：
    所述PN序列的初始值根据小区索引确定。
  41. 一种基站，包括：第一存储器和第一处理器，其中，所述第一存 储器中存储有计算机指令，所述第一处理器通过执行所述计算机指令，从而实现以下方法：
    根据第一信号的配置信息，向一个或多个UE发送第一信号；
    在发送所述第一信号后，向所述UE发送所述第一信号对应的物理下行控制信道PDCCH。
  42. 一种用户设备UE，包括：第二存储器和第二处理器，其中，所述第二存储器中存储有计算机指令，所述第二处理器通过执行所述计算机指令，从而实现以下方法：
    根据第一信号的配置信息检测基站发送的本UE对应的第一信号；
    在检测到本UE对应的的第一信号时，检测该第一信号对应的物理下行控制信道PDCCH。
  43. 一种存储介质，其上存储有计算机指令，其上存储有计算机指令，计算机指令被处理器执行时实现权利要求1至10任一项所述方法的步骤，或者实现权利要求11至20任一项所述方法的步骤。
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