CN108632789A - Transmission method, device, base station and the user equipment of down control channel - Google Patents
Transmission method, device, base station and the user equipment of down control channel Download PDFInfo
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- 230000011664 signaling Effects 0.000 claims description 92
- 238000001514 detection method Methods 0.000 claims description 23
- 230000001427 coherent effect Effects 0.000 description 20
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- 238000004891 communication Methods 0.000 description 5
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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
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- 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
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- 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
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Abstract
The invention discloses a kind of transmission method of Downlink Control Information, device, base station and user equipment, the method includes：Base station sends the first signal, and after sending first signal according to the configuration information of the first signal to one or more UE, and the corresponding Physical Downlink Control Channel of first signal is sent to UE.UE detects corresponding first signals of this UE that base station is sent according to the configuration information of the first signal；And when detecting corresponding first signals of this UE, detect the corresponding Physical Downlink Control Channel of the first signal.The present invention gives the first signals of one kind sending and receiving scheme, for UE, only detects that base station is sent to the first signal of this UE, just carry out the blind Detecting of PDCCH, as it can be seen that the present invention by introducing the first signal, can make terminal obtain downlink information with lower power consumption.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of transmission method of down control channel, device, base station and users
Equipment.
Background technology
Machine type communication (Machine Type Communications, MTC), also known as machine to machine (Machine
To Machine, M2M) be Internet of Things at this stage main application form.The MTC device disposed currently on the market is based primarily upon entirely
Ball mobile communication (Global System of Mobile communication, GSM) system.In recent years, due to LTE/LTE-
The spectrum efficiency of A is high, and more and more mobile operator select evolution of the LTE/LTE-A as future broadband wireless communication system
Direction.MTC multiple types data service based on LTE/LTE-A also will be more attractive.
In third generation partner program (3rd Generation Partnership Project, abbreviation 3GPP) technology
It is disclosed in report TR45.820V200 several suitable for honeycomb grade Internet of Things (Comb-Internet Of Things, abbreviation C-
IOT technology), wherein technology is the most for narrowband Internet of Things (Narrow Bang-Internet Of Things, abbreviation NB-IoT)
It is noticeable.NB-IOT systems pay close attention to the radio access technologies of low complex degree and poor throughput, and main goal in research includes：Change
Kind in-door covering, the support of flood tide low throughput users equipment, low delay sensitivity, ultralow equipment cost, low equipment
Power attenuation and the network architecture.
Network can send to the user equipment (User Equipment, UE) of Idle state and connected state and page.It paged
Journey can be triggered by core net, for notifying some UE to receive paging request, can also be triggered by eNB, for notifying system to believe
The update of breath.Paging message indicated temporarily using P- wireless networks (Radio Network Temporary Identifier,
RNTI) scrambled physical down control information (Physical Downlink Control Channel, PDCCH) is dispatched, in object
Manage DSCH Downlink Shared Channel transmission (Physical Downlink Shared Channel, PDSCH) transmission.Terminal is in calling time
(Paging Occasion, PO) goes to detect corresponding PDCCH, so that it is determined that whether the PDSCH of PDCCH instructions carries and seek
Message is exhaled, if terminal does not detect corresponding PDCCH in the PO, mean that does not have paging message in this PO, at this time eventually
End carries out sleep state, does not receive data, and until next PO is detected again, that is, terminal needs are carried out in each PO
The blind Detecting of PDCCH.In existing MTC/NB-IOT systems, machine type communication Physical Downlink Control Channel MPDCCH (MTC
PDCCH, MPDCCH)/narrowband Physical Downlink Control Channel (Narrowband PDCCH, NPDCCH) is to be carried on PDSCH region
, that is, be just capable of determining whether to detect corresponding MPDCCH after the complete subframe of terminal reception, which consumes the work(of terminal
Consumption.The present invention provides a kind of transmission plan of down control channel thus so that under terminal can use lower power consumption to obtain
Row information.
Invention content
In view of the above problems, it is proposed that the present invention is in order to provide a kind of transmission of the down control channel to solve the above problems
Method, apparatus, base station and user equipment.
One side according to the present invention provides a kind of transmission method of down control channel, including：
Base station sends the first signal according to the configuration information of the first signal to one or more user equipment (UE)s；
Base station sends the corresponding physical down control letter of first signal after sending first signal, to the UE
Road PDCCH.
Other side according to the present invention provides a kind of transmission method of down control channel, including：
UE detects corresponding first signals of the UE that base station is sent according to the configuration information of the first signal；
UE detects the corresponding physical downlink control channel PDCCH of the first signal when detecting corresponding first signal.
In terms of third according to the present invention, a kind of transmitting device of down control channel is provided, is applied to base station side, packet
It includes：
First processing module sends the first signal for the configuration information according to the first signal to one or more UE
PDCCH；
Second processing module, for after the first processing module sends first signal, institute to be sent to the UE
State the corresponding Physical Downlink Control Channel of the first signal.
The 4th aspect according to the present invention, provides a kind of transmitting device of down control channel, is applied to the sides UE, packet
It includes：
Signal receiving module, for detecting the UE corresponding first that base station is sent according to the configuration information of the first signal
Signal；
Signal detection module, for when detecting corresponding first signal, detecting under the corresponding physics of the first signal
Row control channel PDCCH.
The 5th aspect according to the present invention, provides a kind of base station, including：First memory and first processor, wherein
Computer instruction is stored in the first memory, the first processor is by executing the computer instruction, to real
Existing following methods：
According to the configuration information of the first signal, the first signal is sent to one or more UE；
After sending first signal, the corresponding Physical Downlink Control Channel of first signal is sent to the UE
PDCCH。
The 6th aspect according to the present invention, provides a kind of UE, including：Second memory and second processor, wherein institute
It states and is stored with computer instruction in second memory, the second processor is by executing the computer instruction, to realize
Following methods：
Corresponding first signals of the UE that base station is sent are detected according to the configuration information of the first signal；
When detecting corresponding first signal, the corresponding Physical Downlink Control Channel of first signal is detected
PDCCH。
The present invention has the beneficial effect that：
The present invention gives a kind of down control channels to send and receive scheme, for UE, only detects base station
It is sent to the first signal of this UE, just carries out the blind Detecting of PDCCH, it is seen then that the present invention can make end by introducing the first signal
End obtains downlink information with lower power consumption.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, below the special specific implementation mode for lifting the present invention.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is a kind of flow chart of the transmission method for down control channel that first embodiment of the invention provides；
Fig. 2 is a kind of flow chart of the transmission method for down control channel that second embodiment of the invention provides；
Fig. 3 is a kind of flow chart of the transmission method for down control channel that third embodiment of the invention provides；
Fig. 4 is the schematic diagram of subframe where the first signal in third embodiment of the invention；
Fig. 5 to 8 is the schematic diagram of subframe where the first signal in fourth embodiment of the invention；
Fig. 9 is a kind of structure diagram of the transmitting device for down control channel that twelveth embodiment of the invention provides；
Figure 10 is a kind of structure diagram of the transmitting device for down control channel that thriteenth embodiment of the invention provides；
Figure 11 is a kind of structure diagram for base station that fourteenth embodiment of the invention provides；
Figure 12 is a kind of structure diagram for user equipment that fifteenth embodiment of the invention provides.
Specific implementation mode
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
The embodiment of the present invention provides a kind of transmission method of down control channel, device, base station and user equipment, the present invention
The down control channel PDCCH that embodiment is mentioned is to control information for bearing downlink, in NB-IoT systems, downlink control
Channel PDCCH is NPDCCH, and for MTC system, down control channel MPDCCH, for NR systems, down control channel is
NR-PDCCH；No matter any system, every control channel for bearing downlink control information belongs to the model that the present invention protects
It encloses.The implementation process of the present invention is described in detail below by several specific embodiments.
In the first embodiment of the present invention, a kind of transmission method of down control channel is provided, as shown in Figure 1, including
Following steps：
Step S101, base station send the first signal according to the configuration information of the first signal to one or more UE；
Step S102, base station send the corresponding physics of first signal after sending first signal, to the UE
Down control channel PDCCH.
In the embodiment of the present invention, the configuration information of the first signal includes：The frequency of the time-domain position of first signal, the first signal
At least one of the signal type of domain position and the first signal.
In one particular embodiment of the present invention, the time-domain position of the first signal includes at least one of：First letter
Number where subframe and the first signal where OFDM (Orthogonal Frequency Division Multiplexing,
Orthogonal frequency division multiplexing) symbol.
Wherein, the OFDM symbol where the first signal includes：3rd OFDM symbol and/or the 4th OFDM symbol in subframe
Number, alternatively, terminating to subframe since g-th of OFDM symbol in subframe, the wherein value of g is configured by high-level signaling.
Further, in the embodiment of the present invention, the subframe where the first signal is determined according at least one following manner：
Mode one：The subframe where the first signal is determined according to the period of the first signal of signaling instruction and/or offset；
Mode two：According to the corresponding search space initial positions PDCCH, the subframe where the first signal is determined；
Specifically, in the embodiment of the present invention, according to the corresponding search space initial positions PDCCH, first letter is determined
Subframe where number is subframe { n-k0,n-k1,…,n-kX-1, wherein n is the starting subframe of the corresponding search spaces PDCCH.
Mode three：According to the initial position of the corresponding numbers of repetition of PDCCH, the subframe where the first signal is determined；
Specifically, in the embodiment of the present invention, according to the initial position of the corresponding numbers of repetition of PDCCH, described first is determined
Subframe where signal is subframe { m-k0,m-k1,…,m-kX-1}；Wherein m is the starting subframe of the corresponding numbers of repetition of PDCCH,
The value of the corresponding numbers of repetition of PDCCH is { 1,2 ..., Rmax }.
Mode four：According to the initial position of PDCCH, the subframe where determining first signal is subframe { h-k0,h-
k1,…,h-kX-1}；H is that PDCCH originates subframe.
In the present embodiment, k0、k1、…、kX-1Value be value that base station and UE make an appointment, or the value for signaling instruction；X
Value according to one or more related in following parameter：The covering grade of terminal, the corresponding number of repetition of the PDCCH is most
The period of big value Rmax and the corresponding search spaces the PDCCCH.
Further, in the embodiment of the present invention, the signal type of the first signal includes at least one of：First signal pair
The sequence and sequence configuration information answered；
Wherein, the corresponding sequence of the first signal is：Irrigate assorted sequence, ZC sequences, pseudo noise PN sequences, computer search
It is one or more in sequence C GS.
In one particular embodiment of the present invention, when the corresponding sequence of the first signal includes ZC sequences, sequence configuration
Information includes：Between ZC sequence lengths, the root sequence of ZC sequences, the corresponding cyclic shift value of ZC sequences and the cyclic shift of ZC sequences
Every the method for determination of value.
Specifically, ZC sequence lengths are determined according to the corresponding subcarrier in frequency domain number of the first signal, or according to the first letter
Number corresponding subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The cyclic shift interval value of ZC sequences configures value by high-level signaling；
The root sequence of ZC sequences is determined according to cell index；
The corresponding cyclic shift value of ZC sequences is determined according to one or more of following information：Cell index, terminal rope
Draw, the index of time slot, the first letter where the index, the first signal of subframe where the deviant of high-level signaling instruction, the first signal
The index of OFDM symbol where number.
In one particular embodiment of the present invention, when the corresponding sequence of the first signal includes CGS sequences, sequence configuration
Information includes：The determination of sequence length, the corresponding cyclic shift value of CGS sequences and the corresponding cyclic shift interval value of CGS sequences
Mode.
Specifically, CGS sequence lengths are determined according to the corresponding subcarrier in frequency domain number of the first signal, or according to the first letter
Number corresponding subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The corresponding cyclic shift value of CGS sequences is determined according to one or more of following information：Cell index, terminal rope
Draw, the deviant of high-level signaling instruction, the index of subframe where the first signal, the index of time slot where the first signal, the first letter
The index of OFDM symbol where number；
The corresponding cyclic shift interval value of CGS sequences configures value by high-level signaling.
In one particular embodiment of the present invention, when the corresponding sequence of the first signal includes to irrigate assorted sequence, sequence is matched
Confidence ceases：Irrigate the method for determination of assorted sequence length and the index of Wo Shi sequences.
It is determined according to the corresponding time-domain OFDM symbol number of the first signal specifically, irrigating assorted sequence length；
Irrigating the index of assorted sequence can determine according to one or more of following information information：Cell index, terminal rope
Draw, the value of signaling instruction, the index of OFDM symbol where subframe index where the first signal and the first signal.
Further, in the embodiment of the present invention, when the corresponding sequence of the first signal includes also PN sequences, sequence configuration information
Including：The initial value of PN sequences is determined according to cell index.
Further, in the embodiment of the present invention, the frequency domain position of the first signal includes at least one of：First signal institute
Narrowband index and the first signal where resource block index.
Optionally, the subcarrier number shared by the first signal is obtained according to the frequency domain position of the first signal, when the first signal
Frequency domain position be the first signal where narrowband index, then subcarrier number be the corresponding subcarrier number in narrowband, first
The frequency domain position of signal is the resource block index where the first signal, then subcarrier number is the corresponding subcarrier of resource block
Number.
Optionally, in the embodiment of the present invention, the narrowband index and/or first where the first signal is indicated by high-level signaling
Resource block index where signal.
In addition, in an alternate embodiment of the present invention where, when the first mode of high-level signaling is opened, base station is being sent
After first signal, the corresponding PDCCH of first signal is sent to the UE, otherwise base station directly transmits PDCCH；Or
Person, when high-level signaling indicates first mode, base station sends first signal after sending first signal, to the UE
Corresponding PDCCH；When high-level signaling indicates second mode, base station directly transmits PDCCH；Alternatively, the t1 millis in t millisecond periods
Second, base station sends the corresponding PDCCH of first signal after sending first signal, to the UE, in t millisecond periods
Other moment, base station directly transmits PDCCH.
In conclusion the method for the embodiment of the present invention gives a kind of first signalling case, it is somebody's turn to do when base station uses
When scheme sends the first signal so that terminal can use lower power consumption to obtain down control channel.
In the second embodiment of the present invention, a kind of transmission method of down control channel is provided, as shown in Fig. 2, described
Method includes the following steps：
Step S201, UE detect corresponding first signals of this UE that base station is sent according to the configuration information of the first signal；
Step S202, UE detect the corresponding physical down control of first signal when detecting corresponding first signal
Channel PDCCH.
In the embodiment of the present invention, the configuration information of the first signal includes：The frequency of the time-domain position of first signal, the first signal
At least one of the signal type of domain position and the first signal.
Further, in the embodiment of the present invention, UE detects this UE pairs that base station is sent according to the configuration information of the first signal
The first signal answered, including：
According to the time-domain position information and frequency domain position information of the first signal, the first signal that base station is sent is received；
According to the signal type information of the first signal, the first signal is obtained, and using first signal to the base that receives
The first signal sent of standing carries out coherent detection, to determine whether to receive the first signal of this UE of base station transmission.
Further, it in the embodiment of the present invention, according to the time-domain position and frequency domain position of the first signal, receives base station and sends
The first signal, including：
According to the frequency domain position of the first signal, where determining the narrowband index and/or the first signal where the first signal
Resource block indexes；The subcarrier number shared by the first signal is obtained according to the frequency domain position of the first signal, when the frequency of the first signal
Domain position is the narrowband index where the first signal, then subcarrier number is the corresponding subcarrier number in narrowband, the first signal
Frequency domain position be the first signal where resource block index, then subcarrier number be the corresponding subcarrier number of resource block.
In the embodiment of the present invention, frequency domain position information can indicate to obtain by high-level signaling.
According to the time-domain position of the first signal, the subframe where the first signal and/or the OFDM where the first signal are determined
Symbol.
Specifically, in the embodiment of the present invention, the OFDM symbol where determining the first signal is：3rd OFDM symbol in subframe
Number and/or the 4th OFDM symbol, or, subframe in terminate to subframe since g-th of OFDM symbol, wherein the value of g by high level believe
Enable configuration.
Further, in the embodiment of the present invention, the mode of subframe includes but not limited to be where determining the first signal：
Mode one：The subframe where the first signal is determined according to the period of the first signal of signaling instruction and/or offset；
Mode two：According to the corresponding search space initial positions PDCCH, the subframe where the first signal is determined；
Specifically, in the embodiment of the present invention, according to the corresponding search space initial positions PDCCH, first letter is determined
Subframe where number is subframe { n-k0,n-k1,…,n-kX-1}.Wherein, n is the starting subframe of the corresponding search spaces PDCCH
Mode three：According to the initial position of the corresponding numbers of repetition of PDCCH, the subframe where the first signal is determined；
Specifically, in the embodiment of the present invention, according to the initial position of the corresponding numbers of repetition of PDCCH, described first is determined
Subframe where signal is subframe { m-k0,m-k1,…,m-kX-1, wherein m is the starting subframe of the corresponding numbers of repetition of PDCCH,
The value of the corresponding numbers of repetition of PDCCH is { 1,2 ..., Rmax }；
Mode four：According to the initial position of PDCCH, the subframe where determining first signal is subframe { h-k0,h-
k1,…,h-kX-1}；H is that PDCCH originates subframe；
Wherein, k0、k1、…、kX-1Value be value that base station and UE make an appointment, or the value for signaling instruction；The value root of X
According to one or more related in following parameter：The covering grade of terminal, the maximum value of the corresponding number of repetition of the PDCCH
The period of Rmax and the corresponding search spaces the PDCCCH.
Further, in the embodiment of the present invention, the signal type of the first signal includes at least one of：First signal pair
The sequence and sequence configuration information answered.
Wherein, the corresponding sequence of the first signal is one or more in following sequence：Irrigate assorted sequence, ZC sequences, PN sequences
Row and CGS sequences.
In one particular embodiment of the present invention, when the corresponding sequence of the first signal includes ZC sequences, sequence configuration
Information includes：Between ZC sequence lengths, the root sequence of ZC sequences, the corresponding cyclic shift value of ZC sequences and the cyclic shift of ZC sequences
Every the method for determination of value.
Specifically, in the present embodiment, ZC sequence lengths, the root sequence of ZC sequences, the corresponding cyclic shift of ZC sequences are determined
The mode of the cyclic shift interval value of value and ZC sequences includes：
It is determined according to the corresponding subcarrier in frequency domain number of the first signal, or according to the corresponding subcarrier in frequency domain of the first signal
Number and time-domain OFDM symbol number, determine ZC sequence lengths；
The root sequence of ZC sequences is obtained according to cell index；
The cyclic shift value of ZC sequences is determined according at least one of：Cell index, the index of UE, high-level signaling instruction
Deviant, the index of subframe where the first signal, the index of time slot where the first signal, OFDM symbol where the first signal
Index；
Cyclic shift interval is obtained according to high-level signaling.
At this point, according to the signal type information of the first signal, the first signal is obtained, including：
According to sequence configuration information, ZC sequence lengths, the root sequence of ZC sequences, the corresponding cyclic shift value of ZC sequences are determined
With the cyclic shift interval value of ZC sequences；
According to following for the ZC sequence lengths, the root sequence of ZC sequences, the corresponding cyclic shift value of ZC sequences and ZC sequences
Ring shift intervals value, obtains the first signal.
In the still another embodiment of the present invention, when the corresponding sequence of the first signal includes CGS sequences, sequence configuration
Information includes：The determination of sequence length, the corresponding cyclic shift value of CGS sequences and the corresponding cyclic shift interval value of CGS sequences
Mode.
Specifically, in the present embodiment, determine that sequence length, the corresponding cyclic shift value of CGS sequences and CGS sequences are corresponding
The mode of cyclic shift interval value includes：
It is determined according to the corresponding subcarrier in frequency domain number of the first signal, or according to the corresponding subcarrier in frequency domain of the first signal
Number and time-domain OFDM symbol number determine the length of CGS sequences；
Cyclic shift value is determined according at least one of：The index of cell, the index of UE, the offset of high-level signaling instruction
Value, the index of subframe where the first signal, the index of time slot where the first signal, the index of OFDM symbol where the first signal；
Cyclic shift interval is obtained according to high-level signaling.
At this point, according to the signal type of the first signal, the first signal is obtained, including：
According to sequence configuration information, sequence length, the corresponding cyclic shift value of CGS sequences and the CGS sequences of CGS sequences are determined
The cyclic shift interval value of row；
According to the sequence length of CGS sequences, the cyclic shift interval of CGS sequences corresponding cyclic shift value and CGS sequences
Value, obtains the first signal.
In the still another embodiment of the present invention, when the corresponding sequence of the first signal includes to irrigate assorted sequence, sequence is matched
Confidence ceases：Irrigate the method for determination of assorted sequence length and the index of Wo Shi sequences.
Specifically, in the present embodiment, is determined according to the corresponding time-domain OFDM symbol number of the first signal and irrigate assorted sequence length；
According to cell index, the index of UE, the value of signaling instruction, one kind or more in the index of subframe where the first signal
Kind, obtain the index for irrigating assorted sequence.
At this point, according to the signal type of the first signal, the first signal is obtained, including：
According to sequence configuration information, the length and index for irrigating assorted sequence are determined；
According to the length and index for irrigating assorted sequence, the first signal is obtained.
Further, in the embodiment of the present invention, when the corresponding sequence of the first signal further includes PN sequences, the sequence is matched
Confidence ceases：The initial value of PN sequences is determined according to cell index.
Optionally, in the present embodiment, when the low-power consumption mode of high-level signaling is opened, terminal first detects the first signal,
Corresponding PDCCH is detected again, otherwise directly detects PDCCH；Alternatively, when high-level signaling indicates low-power consumption mode, terminal is first examined
The first signal is surveyed, then detects corresponding PDCCH；When high-level signaling indicates normal mode, terminal directly detects PDCCH；Alternatively,
T1 milliseconds in t millisecond periods, terminal first detects the first signal, then detects corresponding PDCCH；Other in t millisecond periods
Moment, terminal directly detect PDCCH.
In conclusion using the method for the embodiment of the present invention, for UE, only detect that base station is sent to this UE
The first signal, just carry out PDCCH blind Detecting, it is seen then that the present invention by introducing the first signal, can make low-power consumption terminal or
The UE that person is in low-power consumption mode further decreases power consumption.
In the third embodiment of the present invention, a kind of transmission method of down control channel is provided, as shown in figure 3, including
Following steps：
Step S301, base station determine the narrowband index and first where the first signal according to the frequency domain position of the first signal
Resource block index where signal；
Step S302, base station determine the subframe and the first signal where the first signal according to the time-domain position of the first signal
The OFDM symbol at place；
Wherein, how the time-domain position instruction base station of the first signal determines subframe and the first signal institute where the first signal
OFDM symbol.
In the present embodiment, the time-domain position of the first signal indicates the period for the first signal that base station is indicated according to high-level signaling
And offset, the OFDM symbol where determining the subframe where the first signal, and instruction the first signal of base station are that the 3rd OFDM is accorded with
Number.
Step S303, base station obtain the first signal, and according to the first determining signal according to the signal type of the first signal
Subframe where resource block index, the first signal where place narrowband index, the first signal and the OFDM symbol where the first signal,
The first signal is sent to one or more UE.
In the present embodiment, it is assumed that the period of the first signal of high-level signaling configuration is T, and it is 0 to deviate, then where the first signal
Subframe be { subframe z, subframe z+1 ... }, it is assumed that base station sends the corresponding Physical Downlink Control Channel place one or more UE
Search space be search space y+1, then base station sends the first signal on the subframe z where first the first signal, tool
Body is as shown in Figure 4.
Step S304, UE receive the first signal that base station is sent according to the frequency domain position and time-domain position of the first signal；
Step S305, UE obtain the first signal, and using first signal to receiving according to the signal type of the first signal
The first signal that the base station arrived is sent carries out coherent detection, and when detecting energy peak, determining receive is sent to this UE's
First signal.
In the embodiment of the present invention, UE detects corresponding first signal on subframe z, then since the y of search space into
Row blind Detecting, until obtaining corresponding PDCCH.Search space y is namely first detected, then detects search space y+1.
UE does not detect corresponding first signal on subframe z+1, then without PDCCH in next cycle T
Blind Detecting.
Wherein, the method for blind Detecting PDCCH belongs to the prior art, is not repeating here；Wherein starting of search space
The preparation method of frame belongs to the prior art, for example, for MTC system, the index of the starting subframe of the corresponding search spaces PDCCH
MeetFor NB-IoT systems, the index of the starting subframe of the corresponding search spaces PDCCH
MeetWherein, nfFor wireless frame index, nsIt is indexed for time slot, GMPDCCHValue configured by high-level signaling； GNPDCCH, the value of α configures by high-level signaling.
In the fourth embodiment of the present invention, a kind of transmission method of down control channel is provided, continue as shown in figure 3,
Include the following steps：
Step S301, base station determine the narrowband index and first where the first signal according to the frequency domain position of the first signal
Resource block index where signal；
Step S302, base station determine the subframe and the first signal where the first signal according to the time-domain position of the first signal
The OFDM symbol at place；
In the present embodiment, the time-domain position instruction base station of the first signal is empty according to the corresponding search of Physical Downlink Control Channel
Between initial position, determine the subframe where the first signal, and the OFDM symbol where the first signal of instruction is that the 4th OFDM is accorded with
Number.
Step S303, base station obtain the first signal, and according to the first determining signal according to the signal type of the first signal
Subframe where resource block index, the first signal where place narrowband index, the first signal and the OFDM symbol where the first signal,
The first signal is sent to one or more UE.
In the embodiment of the present invention, it is subframe n to enable the starting subframe of search space, then the subframe where the first signal is son
Frame { n-k0,n-k1,…,n-kx-1}。
Assuming that the value of X=0, k are fixed value 1, as shown in figure 5, the starting subframe of search space y is subframe ny, search
The starting subframe of space y+1 is subframe ny+1, and the starting subframe of search space y+2 is subframe ny+2.Assuming that base station sends UE A
Search space where corresponding Physical Downlink Control Channel is search space y+1；So base station is sent on subframe ny+1-1
Corresponding first signal.
Or, it is assumed that OFDM symbol 4, X=1 (value of base station and terminal agreement), k0=0, then the first signal is located at
It is specific as shown in Figure 6 on 4th symbol of the starting subframe of search space.
Or, it is assumed that OFDM symbol 4, X=1, high-level signaling indicate k0=1, then the first signal is located at search space
Starting subframe previous sub- frame the 4th symbol on, it is specific as shown in Figure 7.
Or, it is assumed that OFDM symbol 4, X=Rmax, it is assumed that Rmax=8, and the instruction of corresponding high-level signaling k0,
K1 ..., k7 } value be { 1,2,3,4,5,6,7,8 }, then the subframe at the place of the first signal be search space starting subframe
It is specific as shown in Figure 8 on 4th symbol of the 1st, the 2nd, the 3rd, the 4th, the 5th, the 6th, the 7th and the 8th subframe before.
Step S304, UE receive the first signal that base station is sent according to the frequency domain position and time-domain position of the first signal；
Step S305, UE obtain the first signal, and using first signal to receiving according to the signal type of the first signal
The first signal that the base station arrived is sent carries out coherent detection, and when detecting energy peak, determining receive is sent to this UE's
First signal.
In the embodiment of the present invention, UE (i.e. UE A) detects the first signal in subframe ny-1 and does not detect corresponding first
Signal, then UE the A not blind Detecting PDCCH in the y of search space, UE detect the first signal in subframe ny+1-1 and detect pair
The first signal answered, then UE A blind Detecting PDCCH in the y+1 of search space；UE A detect the first signal in subframe ny+2-1
And do not detect corresponding first signal, then UE A not blind Detecting PDCCH in search space.
In fifth embodiment of the invention, a kind of transmission method of down control channel is provided, is continued as shown in figure 3, packet
Include following steps：
Step S301, base station determine the narrowband index and first where the first signal according to the frequency domain position of the first signal
Resource block index where signal；
Step S302, base station determine the subframe and the first signal where the first signal according to the time-domain position of the first signal
The OFDM symbol at place；
In the present embodiment, the time-domain position instruction base station of the first signal is according to the corresponding repetition time of Physical Downlink Control Channel
Number, determines the subframe where the first signal, wherein determine the first signal according to the corresponding number of repetition of Physical Downlink Control Channel
Including：The starting subframe of number of repetition Ri is subframe m in search space, then the subframe where the first signal is subframe m-k；With
For Rmax=8, then the starting subframe of number of repetition R1=1 is { subframe m, subframe m+1, subframe m+2, subframe m+3, subframe m
+ 4, subframe m+5, subframe m+6, subframe m+7 }, the starting subframe that number of repetition is R2=2 is { subframe m, subframe m+2, subframe m+
4, subframe m+6 }；The starting subframe that number of repetition is R3=4 is { subframe m, subframe m+4 }, and number of repetition is the starting subframe of R4
For { subframe m }；Assuming that k=0.
Step S303, base station obtain the first signal, and according to the first determining signal according to the signal type of the first signal
Subframe where resource block index, the first signal where place narrowband index, the first signal and the OFDM symbol where the first signal,
The first signal is sent to one or more UE.
In the embodiment of the present invention, it is assumed that it is R2 that base station, which sends the corresponding number of repetition of the corresponding down control channels of UE A,；
So base station sends corresponding first signal in subframe { subframe m, subframe m+2, subframe m+4, subframe m+6 }.
Step S304, UE receive the first signal that base station is sent according to the frequency domain position and time-domain position of the first signal；
Step S305, UE obtain the first signal, and using first signal to receiving according to the signal type of the first signal
The first signal that the base station arrived is sent carries out coherent detection, and when detecting energy peak, determining receive is sent to this UE's
First signal.
In the embodiment of the present invention, UE (i.e. UE A) is in { subframe m, subframe m+1, subframe m+2, subframe m+3, subframe m+4, son
Frame m+5, subframe m+6, subframe m+7 } on detect the first signal and detected on { subframe m, subframe m+2, subframe m+4, subframe m+6 }
To the first signal, then UE A select number of repetition to be detected for the Candidate Set of R2.
In sixth embodiment of the invention, a kind of transmission method of down control channel is provided, is continued as shown in figure 3, packet
Include following steps：
Step S301, base station determine the narrowband index and first where the first signal according to the frequency domain position of the first signal
Resource block index where signal；
Step S302, base station determine the subframe and the first signal where the first signal according to the time-domain position of the first signal
The OFDM symbol at place；
In the present embodiment, the time-domain position instruction base station of the first signal determines the first signal according to Physical Downlink Control Channel
The subframe at place, wherein determine that the first signal includes according to Physical Downlink Control Channel：Son where Physical Downlink Control Channel
Frame is p, it is assumed that X=1, k=0, then sending the first signal on subframe p.
Step S303, base station obtain the first signal, and according to the first determining signal according to the signal type of the first signal
Subframe where resource block index, the first signal where place narrowband index, the first signal and the OFDM symbol where the first signal,
The first signal is sent to one or more UE.
In the embodiment of the present invention, it is assumed that base station sends the corresponding down control channels of UE A in subframe p, then base station is in son
Frame p sends corresponding first signal.
Step S304, UE receive the first signal that base station is sent according to the frequency domain position and time-domain position of the first signal；
Step S305, UE obtain the first signal, and using first signal to receiving according to the signal type of the first signal
The first signal that the base station arrived is sent carries out coherent detection, and when detecting energy peak, determining receive is sent to this UE's
First signal.
In the embodiment of the present invention, UE (i.e. UE A) each PDCCH of blind Detecting since the corresponding search spaces PDCCH,
If not detecting the first signal in subframe, corresponding PDCCH is not detected, and the first letter is detected only on subframe p
Number, then UE detects corresponding PDCCH.
In the seventh embodiment of the present invention, provide a kind of transmission method of down control channel, continue as shown in figure 3,
Described method includes following steps：
Step S301, base station determine the narrowband index and first where the first signal according to the frequency domain position of the first signal
Resource block index where signal；
Step S302, base station determine the subframe and the first signal where the first signal according to the time-domain position of the first signal
The OFDM symbol at place；
Step S303, base station obtain the first signal, and according to the first determining signal according to the signal type of the first signal
Subframe where resource block index, the first signal where place narrowband index, the first signal and the OFDM symbol where the first signal,
The first signal is sent to one or more UE.
Specifically, in an exemplary embodiment of the present invention, it is assumed that in MTC system, the reception bandwidth of terminal is minimum
For 1.4MHz, the narrowband index of corresponding 72 subcarriers and the first signal is narrowband 1, then the corresponding subcarrier of the first signal
Number is identical with reception bandwidth.The signal type of first signal indicates that the sequence of the first signal is ZC sequences, and the sequence of instruction configures
Information is that the length of ZC sequences is determined according to the corresponding subcarrier number of the first signal, then the length of sequence is 71, by following
Ring shifts to obtain the sequence of 72 length；The ZC sequences for being 71 for sequence length, corresponding 70 root sequences, wherein root sequence index and
Relationship between cell index is pre-defined；Pass through the corresponding interval of signal deployment cyclic shift；Terminal indexes and sequence loops
Correspondence between displacement is pre-defined.
In this example, if the first signal correspond to multiple OFDM symbols (multiple OFDM symbols from identical subframe and/or
Different subframes) and the length of sequence determined according to the corresponding subcarrier number of the first signal, the sequence in multiple OFDM symbols
By repeating to obtain, it is assumed that the first signal corresponds to the 3rd OFDM symbol of subframe w and the 3rd OFDM symbol of subframe w+1, that
The corresponding sequence of the first signal on subframe w is { R (0), R (1) ..., R (71) }, and the first signal on subframe w+1 is corresponding
Sequence is { R (0), R (1) ..., R (71) }；If the first signal corresponds to the length of multiple OFDM symbols and sequence according to the first letter
Number corresponding subcarrier number and OFDM symbol determine, then sequence length is determined according to 72*OFDM symbol numbers, it is assumed that OFDM
Symbol numbers are 2, then being { R (0), R (1) ..., R (143) } by cyclic shift formation sequence, it is assumed that the first signal corresponds to
The 3rd OFDM symbol of subframe w and the 3rd OFDM symbol of subframe w+1, then the corresponding sequence of the first signal on subframe w
For { R (0), R (1) ..., R (71) }, the corresponding sequence of the first signal on subframe w+1 is { R (72), R (1) ..., R (143) }.
In this example, it is assumed that it is Cell_ID 1, the corresponding terminals of UE A to only wake up the cell index residing for UE A and UE A
Index is UE_ID A, then：
When base station sends UE A corresponding first signal, root sequence is selected according to Cell_ID 1, is selected according to UE_ID A
The corresponding cyclic shift of described sequence.
Step S304, UE receive the first signal that base station is sent according to the frequency domain position and time-domain position of the first signal；
Step S305, UE obtain the first signal, and utilize first signal pair according to the signal type information of the first signal
The first signal that the base station received is sent carries out coherent detection, and when detecting energy peak, determining receive is sent to this
The first signal of UE.
Specifically, in the present embodiment, it is assumed that the UE is UE A, then UE A determine root sequence according to Cell_ID 1, according to
UE_ID A determine corresponding cyclic shift, and obtain corresponding first according to root sequence, the interval of cyclic shift, cyclic shift
Signal A；
UE A carry out coherent detection according to the first obtained signal A to the first signal received, detect energy peak,
UE A blind Detectings MPDCCH；
Similarly, other UE obtain the first signal according to same method, using the first obtained signal to receive
One signal carries out coherent detection, if energy peak can not be detected, UE not blind Detecting PDCCH.
In eighth embodiment of the invention, a kind of transmission method of down control channel is provided, is continued as shown in figure 3, institute
The method of stating includes the following steps：
Step S301, base station determine the narrowband index and first where the first signal according to the frequency domain position of the first signal
Resource block index where signal；
Wherein, the frequency domain position of the first signal can be the information made an appointment between base station and UE.
Step S302, base station determine the subframe and the first signal where the first signal according to the time-domain position of the first signal
The OFDM symbol at place；
Wherein, the time-domain position information of the first signal can be the information made an appointment between base station and UE.The information refers to
Show the subframe where how base station determines the first signal and the OFDM symbol where the first signal.
Step S303, base station obtain the first signal, and according to the first determining signal according to the signal type of the first signal
Subframe where resource block index, the first signal where place narrowband index, the first signal and the OFDM symbol where the first signal,
The first signal is sent to one or more UE.
Specifically, in an exemplary embodiment of the present invention, it is assumed that in MTC system, the reception bandwidth of terminal is minimum
Narrowband index for 1.4MHz, corresponding 72 subcarriers, the first signal is narrowband 1, then the corresponding subcarrier of the first signal
Number is identical with reception bandwidth.The signal type of first signal indicates that the sequence of the first signal is ZC sequences, and the sequence of instruction configures
Information is：The length of ZC sequences corresponds to subcarrier number according to the first signal and determines, then the length of sequence is 63, passes through cycle
Displacement obtains the sequence of 72 length；The ZC sequences for being 63 for sequence length, corresponding 62 root sequences, root sequence index and cell
Relationship between index is pre-defined；Pass through the corresponding interval of signal deployment cyclic shift；High-level signaling instruction terminal is corresponding
Sequence cyclic shift.
In this example, it is assumed that it is Cell_ID 1 to only wake up the cell index residing for UE A and UE A, high-level signaling instruction
Sequence cyclic shift is CS_A, then：
When base station sends UE A corresponding first signal, root sequence is selected according to Cell_ID 1, selected according to CS_A described in
The corresponding cyclic shift of root sequence.
Step S304, UE receive the first signal that base station is sent according to the frequency domain position and time-domain position of the first signal；
Step S305, UE obtain the first signal, and utilize first signal pair according to the signal type information of the first signal
The first signal that the base station received is sent carries out coherent detection, and when detecting energy peak, determining receive is sent to this
The first signal of UE.
Specifically, in the present embodiment, it is assumed that the UE is UE A, then UE A determine root sequence according to Cell_ID 1, according to
CS_A determines corresponding cyclic shift, and obtains corresponding first signal according to root sequence, the interval of cyclic shift, cyclic shift
A；
UE A carry out coherent detection according to the first obtained signal A to the first signal received, detect energy peak,
UE A blind Detectings PDCCH；
Similarly, other UE obtain the first signal according to same method, using the first obtained signal to receive
One signal carries out coherent detection, if energy peak can not be detected, UE not blind Detecting PDCCH.
In the ninth embodiment of the present invention, provide a kind of transmission method of down control channel, continue as shown in figure 3,
Described method includes following steps：
Step S301, base station determine the narrowband index and first where the first signal according to the frequency domain position of the first signal
Resource block index where signal；
Wherein, the frequency domain position of the first signal can be the information made an appointment between base station and UE.
Step S302, base station determine the subframe and the first signal where the first signal according to the time-domain position of the first signal
The OFDM symbol at place；
Wherein, the time-domain position information of the first signal can be the information made an appointment between base station and UE.The information refers to
Show the subframe where how base station determines the first signal and the OFDM symbol where the first signal.
Step S303, base station obtain the first signal, and according to the first determining signal according to the signal type of the first signal
Subframe where resource block index, the first signal where place narrowband index, the first signal and the OFDM symbol where the first signal,
The first signal is sent to one or more UE.
Specifically, in an exemplary embodiment of the present invention, it is assumed that in MTC system, the reception bandwidth of terminal is minimum
For 1.4MHz, corresponding 72 subcarriers.The narrowband index of first signal is narrowband 1, then the corresponding subcarrier of the first signal
Number is identical with reception bandwidth, and the signal type of the first signal indicates that the sequence of the first signal is ZC sequences, and the sequence of instruction configures
Information is：The length of ZC sequences determines that the length of sequence is 67, is moved by recycling according to the corresponding subcarrier number of the first signal
Position obtains the sequence of 72 length；The ZC sequences for being 67 for sequence length, corresponding 60 root sequences, wherein root sequence index and cell
Relationship between index is pre-defined；Pass through the corresponding interval of signal deployment cyclic shift；According to high-level signaling instruction and cell
Index obtains sequence cyclic shift.
In this example, it is assumed that it is Cell_ID 1 to only wake up the cell index residing for UE A and UE A, high-level signaling instruction
Sequence cyclic shift is CS_A1, then：
When base station only sends UE A corresponding first signals, root sequence is selected according to Cell_ID 1, according to CS_A1 and
Cell_ID 1 selects the corresponding cyclic shift CS_A of described sequence.
Specifically, in the present invention, determine that corresponding cyclic shift CS_A refers to according to CS_A1 and Cell_ID1, according to
Cell_ID1 generates the PN sequences of R long, is added the PN sequences of generation to obtain CS_A2, then CS_A is CS_A1, CS_CA2 phases
Value after adding to being obtained after largest loop displacement modulus.It is dry can to reach minizone for information containing cell index in CS_A
Disturb the effect of randomization.
Step S304, UE receive the first signal that base station is sent according to the frequency domain position and time-domain position of the first signal；
Step S305, UE obtain the first signal, and using first signal to receiving according to the signal type of the first signal
The first signal that the base station arrived is sent carries out coherent detection, and when detecting energy peak, determining receive is sent to this UE's
First signal.
Specifically, in the present embodiment, it is assumed that the UE is UE A, then UE A determine root sequence according to Cell_ID 1, according to
CS_A1 and Cell_ID1 determines corresponding cyclic shift (method of determination is shown in the step S303 of the present embodiment), and according to root sequence,
The interval of cyclic shift, cyclic shift obtain corresponding first signal A.
UE A carry out coherent detection according to the first obtained signal A to the first signal received, detect energy peak,
UE A blind Detectings PDCCH；
Similarly, other UE obtain the first signal according to same method, using the first obtained signal to receive
One signal carries out coherent detection, if energy peak can not be detected, UE not blind Detecting PDCCH.
In the tenth embodiment of the present invention, provide a kind of transmission method of down control channel, continue as shown in figure 3,
Described method includes following steps：
Step S301, base station determine the narrowband index and first where the first signal according to the frequency domain position of the first signal
Resource block index where signal；
Wherein, the frequency domain position of the first signal can be the information made an appointment between base station and UE.
Step S302, base station determine the subframe and the first signal where the first signal according to the time-domain position of the first signal
The OFDM symbol at place；
Wherein, the time-domain position information of the first signal can be the information made an appointment between base station and UE.The information refers to
Show the subframe where how base station determines the first signal and the OFDM symbol where the first signal.
Step S303, base station obtain the first signal, and according to the first determining signal according to the signal type of the first signal
Subframe where resource block index, the first signal where place narrowband index, the first signal and the OFDM symbol where the first signal,
The first signal is sent to one or more UE.
Specifically, in an exemplary embodiment of the present invention, it is assumed that in MTC system, the reception bandwidth of terminal is minimum
Narrowband index for 1.4MHz, corresponding 72 subcarriers, the first signal is narrowband 1, then the corresponding subcarrier of the first signal
Number is identical with reception bandwidth.The signal type of first signal indicates that the sequence of the first signal is ZC sequences, and the sequence of instruction configures
Information is：The length of ZC sequences determines that the length of sequence is 71, is obtained by cyclic shift according to the first channel distortion experienced number
The sequence of 72 length；The ZC sequences for being 71 for sequence length, corresponding 70 root sequences, between root sequence index and cell index
Relationship it is pre-defined；It indexes to obtain sequence cyclic shift according to OFDM symbol where cell index and the first signal, alternatively, root
It indexes to obtain sequence cyclic shift according to OFDM symbol where high-level signaling instruction, cell index and the first signal, be matched by signaling
Set the corresponding interval of cyclic shift.
In this example, it is assumed that it is Cell_ID 1 to only wake up the cell index residing for UE A and UE A, high-level signaling instruction
Sequence cyclic shift is CS_A1, and the first signal accounts for OFDM symbol 3 and OFDM symbol 4 in a subframe, then having：
When base station only sends UE A corresponding first signals, root sequence is selected according to Cell_ID 1, according to cell index,
OFDM symbol index, obtains the corresponding sequence cyclic shift of root sequence where first signal, alternatively, indicated according to high-level signaling,
OFDM symbol where cell index and the first signal indexes to obtain the corresponding sequence cyclic shift of root sequence.
Wherein, it is indexed according to OFDM symbol where cell index, the first signal, obtains the corresponding cyclic shift of root sequence
Mode includes：
The PN sequences that R long is generated according to Cell_ID1 and OFDM symbol index, are added the PN sequences of generation to obtain CS_
It is CS_A2_3 that A2, i.e. OFDM symbol 3, which correspond to CS_A2, and 4 corresponding CS_A2 of OFDM symbol is CS_A2_4,
So CS_A of OFDM symbol 3 is to be obtained after shifting modulus to largest loop after CS_A1, CS_A2_3 are added
Value；The CS_A of OFDM symbol 4 is to shift the value obtained after modulus to largest loop after CS_A1, CS_A2_4 are added.
It indexes to obtain the corresponding sequence of root sequence according to OFDM symbol where high-level signaling instruction, cell index and the first signal
The mode of row cyclic shift includes but not limited to be：
Mode one：Assuming that it is CS_A1 that signaling, which refers to cyclic shift, then the CS_A1_3 in OFDM symbol 3 is CS_A1, then
The value of CS_A1_4 in OFDM symbol 4 is by pre-defined relationship (relationship of CS_A1_3 and CS_A1_4) according to CS_
A1_3 obtains the CS_A1_4 on symbol 4, or according to CS_A1 and pre-defined relationship (CS_A1 and CS_A1_3, CS_A1_4
Relationship) obtain CS_A1_3 and CS_A1_4.
The PN sequences that R long is generated according to Cell_ID1, are added the PN sequences of generation to obtain CS_A2,
So, the CS_A of OFDM symbol 3 is to be obtained after shifting modulus to largest loop after CS_A1_3, CS_A2 are added
Value；The CS_A of OFDM symbol 4 is to shift the value obtained after modulus to largest loop after CS_A1_4, CS_A2 are added.
Mode two：Assuming that it is CS_A1 that signaling, which refers to cyclic shift, then the CS_A1_3 in OFDM symbol 3 is CS_A1, then
The value of CS_A1_4 in OFDM symbol 4 is by pre-defined relationship (relationship of CS_A1_3 and CS_A1_4) according to CS_
A1_3 obtains the CS_A1_4 on symbol 4, or according to CS_A1 and pre-defined relationship (CS_A1 and CS_A1_3, CS_A1_4
Relationship) obtain CS_A1_3 and CS_A1_4.
The PN sequences that R long is generated according to Cell_ID1 and OFDM symbol index, are added the PN sequences of generation to obtain CS_
It is CS_A2_3 that A2, i.e. OFDM symbol 3, which correspond to CS_A2, and 4 corresponding CS_A2 of OFDM symbol is CS_A2_4.
So, the CS_A of OFDM symbol 3 is to be obtained after shifting modulus to largest loop after CS_A1_3, CS_A2_3 are added
Value；The CS_A of OFDM symbol 4 is to shift the value obtained after modulus to largest loop after CS_A1_4, CS_A2_4 are added.
Certainly, in the embodiment of the present invention, the corresponding sequence cyclic shift of root sequence, example can also be obtained according to other modes
Such as, the first signal accounts for 1 OFDM symbol in multiple subframes and each subframe, then cyclic shift can also be according to high-level signaling
Instruction, cell index, subframe index obtain, i.e., change above-mentioned OFDM symbol index into subframe index.
In another example the first signal accounts for 2 OFDM symbols in multiple subframes and each subframe, then cyclic shift can be with
It is obtained according to high-level signaling instruction, cell index, subframe index and OFDM indexes, i.e., adds subframe rope on the basis of above-mentioned
Draw domain to be used for generating CS_A1 or CS_A2 or CS_A.
Step S304, UE receive the first signal that base station is sent according to the frequency domain position and time-domain position of the first signal；
Step S305, UE obtain the first signal, and using first signal to receiving according to the signal type of the first signal
The first signal that the base station arrived is sent carries out coherent detection, and when detecting energy peak, determining receive is sent to this UE's
First signal.
Wherein, UE is according to the signal type of the first signal, and the mode for obtaining the first signal is identical as base station side, herein no longer
It repeats.
In the 11st embodiment of the present invention, a kind of transmission method of down control channel is provided, is continued such as Fig. 3 institutes
Show, described method includes following steps：
Step S301, base station determine the narrowband index and first where the first signal according to the frequency domain position of the first signal
Resource block index where signal；
Wherein, the frequency domain position of the first signal can be the information made an appointment between base station and UE.
Step S302, base station determine the subframe and the first signal where the first signal according to the time-domain position of the first signal
The OFDM symbol at place；
Wherein, the time-domain position of the first signal can be the information made an appointment between base station and UE.The information indicates base
The subframe where how determining the first signal of standing and the OFDM symbol where the first signal.
Step S303, base station obtain the first signal, and according to the first determining signal according to the signal type of the first signal
Subframe where resource block index, the first signal where place narrowband index, the first signal and the OFDM symbol where the first signal,
The first signal is sent to one or more UE.
Specifically, in an exemplary embodiment of the present invention, it is assumed that in MTC system, the reception bandwidth of terminal is minimum
For 1.4MHz, corresponding 72 subcarriers.The PRB indexes of first signal are PRB#1, then the corresponding subcarrier number of the first signal
It is 12, the signal type of the first signal indicates that the sequence of the first signal is CGS sequences and PN sequences, the sequence configuration information of instruction
For：The length of CGS sequences is determined according to the corresponding subcarrier number of the first signal, then the length of sequence is 12, passes through signaling
Configure the corresponding interval of cyclic shift；It is pre-defined that terminal indexes the correspondence between sequence cyclic shift.If first
Signal corresponds to multiple OFDM symbols and the length of sequence determines that sequence length is still according to the corresponding subcarrier number of the first signal
12, it is { R (0), R (1) ..., R (11) } that the sequence in multiple OFDM symbols (or is expanded by repeating to obtain by fertile assorted sequence
Exhibition), it is assumed that the first signal corresponds to the 3rd OFDM symbol of subframe w and the 3rd OFDM symbol of subframe w+1, then on subframe w
The corresponding sequence of the first signal be { R (0), R (1) ..., R (11) }, the corresponding sequence of the first signal on subframe w+1 is { R
(0),R(1),…,R(11)}；If the first signal corresponds to multiple OFDM symbols and the length of sequence is corresponding according to the first signal
Subcarrier number and OFDM symbol determine, then sequence length is still 12*OFDM symbol numbers, it is assumed that OFDM symbol number is 2,
So sequence is { R (0), R (1) ..., R (23) }, it is assumed that the first signal corresponds to the 3rd OFDM symbol and subframe w+1 of subframe w
The 3rd OFDM symbol, then the corresponding sequence of the first signal on subframe w is { R (0), R (1) ..., R (11) }, subframe w+1
On the corresponding sequence of the first signal be { R (12), R (1) ..., R (23) }.
In this example, it is assumed that it is Cell_ID 1, the corresponding terminals of UE A to only wake up the cell index residing for UE A and UE A
Index is UE_ID A, then：
When base station sends UE A corresponding first signal, Cell_ID 1 generates PN sequences as initial value, according to UE_ID
A determines the corresponding cyclic shift of the CGS sequences；PN sequence * CGS sequences are sent as the first signal.
In the another exemplary embodiment of the present invention, it is assumed that in NB-IoT systems, the reception bandwidth of terminal is minimum
200KHz, corresponding 12 subcarriers.The signal type of first signal indicates that the sequence of the first signal is CGS sequences and PN sequences,
The sequence configuration information of instruction is：The length of CGS sequences determines according to the corresponding subcarrier number of the first signal, then sequence
Length is 12；Pass through the corresponding interval of signal deployment cyclic shift；Terminal indexes the correspondence between sequence cyclic shift
It is pre-defined.
In this example, it is assumed that it is Cell_ID 1, the corresponding terminals of UE A to only wake up the cell index residing for UE A and UE A
Index is UE_ID A, then：
When base station sends UE A corresponding first signal, Cell_ID 1 generates PN sequences as initial value, according to UE_ID
A determines the corresponding cyclic shift of the CGS sequences；PN sequence * CGS sequences are sent as the first signal.
Step S304, UE receive the first signal that base station is sent according to the frequency domain position and time-domain position of the first signal；
Step S305, UE obtain the first signal, and using first signal to receiving according to the signal type of the first signal
The first signal that the base station arrived is sent carries out coherent detection, and when detecting energy peak, determining receive is sent to this UE's
First signal.
Specifically, in the present embodiment, it is assumed that the UE is UE A, then the PN sequences that UE A are generated according to Cell_ID1, root
The corresponding cyclic shift of the CGS sequences is determined according to UE_ID A, is obtained according to the interval of cyclic shift and cyclic shift corresponding
CGS sequences；The first signal A is obtained according to PN sequences and CGS sequences；UE A according to the first obtained signal A to receive
One signal carries out coherent detection, detects energy peak, terminal blind Detecting PDCCH.
Similarly, other UE obtain the first signal according to same method, and according to the first obtained signal to receiving
First signal carries out coherent detection, if can't detect energy peak, UE not blind Detecting PDCCH.
Certainly, the method for determination of the sequence cyclic shift in the present embodiment can also use the seven, the eight, nine any one implementations
Mode described in example, which is not described herein again.
All it is for only waking up a terminal, if base station will call out in above-described embodiment in addition, it is necessary to illustrate
Awake multiple terminals, can also send on same time-frequency location by corresponding first signal of multiple terminals；Terminal is according to generation
First signal carries out coherent detection, if detecting energy peak, the first signal pair of terminal blind Detecting to the first signal of reception
The PDCCH answered, otherwise terminal not blind Detecting PDCCH.
In the 12nd embodiment of the present invention, a kind of transmitting device of down control channel is provided, is applied to base station side,
As shown in figure 9, including：
First processing module 910 sends the first letter for the configuration information according to the first signal to one or more UE
Number；
Second processing module 920, for after first processing module 910 sends first signal, being sent to the UE
The corresponding Physical Downlink Control Channel of first signal.
In the embodiment of the present invention, the configuration information of the first signal includes：The frequency of the time-domain position of first signal, the first signal
At least one of the signal type of domain position and the first signal.
Further, in the embodiment of the present invention：
The time-domain position of first signal includes at least one of following：Where subframe where first signal and the first signal
OFDM symbol；
The frequency domain position of first signal includes at least one of following：Narrowband index where first signal and the first letter
Resource block index where number；
The signal type of first signal includes at least one of following：The corresponding sequence of first signal and sequence match confidence
Breath.
Wherein, OFDM symbol where the first signal includes：Third OFDM symbol and/or the 4th OFDM symbol in subframe
Number, or, terminating to subframe since g-th of OFDM symbol in subframe, the wherein value of g is configured by high-level signaling.
Further, in the embodiment of the present invention, the method for determination of subframe where the first signal includes such as one of under type：
Mode one：The son where first signal is determined according to the period of the first signal of signaling instruction and/or offset
Frame；
Mode two：According to the corresponding search space initial positions PDCCH, the subframe where first signal is determined；
Specifically, in the embodiment of the present invention, according to the corresponding search space initial positions PDCCH, the place is determined
Subframe is subframe { n-k0,n-k1,…,n-kX-1}。
Mode three：According to the initial position of the corresponding numbers of repetition of PDCCH, the subframe where the first signal is determined；
Specifically, in the embodiment of the present invention, according to the initial position of the corresponding numbers of repetition of PDCCH, described first is determined
Subframe where signal is subframe { m-k0,m-k1,…,m-kX-1}；
Mode four：According to the initial position of PDCCH, the subframe where determining first signal is subframe { h-k0,h-
k1,…,h-kX-1}；H is that PDCCH originates subframe.
Wherein, the corresponding numbers of repetition of PDCCH are one of the numerical value gathered in { 1,2 ..., Rmax }, and n corresponds to for PDCCH
Search space starting subframe, m be the corresponding numbers of repetition of PDCCH starting subframe, k0、k1、…、kX-1Value be base station and
The value that UE makes an appointment, or the value for signaling instruction；The value of X is according to one or more related in following parameter：Terminal
Covering grade, the period of the corresponding search space maximum value Rmax and the PDCCCH of the corresponding number of repetition of the PDCCH.
Further, in the embodiment of the present invention, the corresponding sequence of the first signal includes one or more of following sequence：
Irrigate assorted sequence, ZC sequences, pseudo noise PN sequences and computer search sequence C GS.
Specifically, in the embodiment of the present invention, when the corresponding sequence of first signal includes ZC sequences, the sequence is matched
Confidence breath includes one or more of lower information：
The ZC sequence lengths determine according to the corresponding subcarrier in frequency domain number of the first signal, or according to the first signal pair
The subcarrier in frequency domain number and time-domain OFDM symbol number answered determine；
The root sequence of the ZC sequences is determined according to cell index；
The corresponding cyclic shift value of the ZC sequences is determined according to one or more of following information：Cell index, UE
Index, the deviant of high-level signaling instruction, the index of subframe where the first signal, the index of time slot where the first signal and the
The index of OFDM symbol where one signal；
The cyclic shift interval value of the ZC sequences is configured according to high-level signaling and is determined.
Specifically, in the embodiment of the present invention, when the corresponding sequence of first signal includes CGS sequences, the sequence
Configuration information includes one or more of lower information：
The CGS sequence lengths determine according to the corresponding subcarrier in frequency domain number of the first signal, or according to the first signal
Corresponding subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The corresponding cyclic shift value of the CGS sequences is determined according to one or more of following information：Cell index, UE
Index, the deviant of high-level signaling instruction, the index of subframe where the first signal, the index of time slot where the first signal and the
The index of OFDM symbol where one signal；
The cyclic shift interval value of the CGS sequences is configured according to high-level signaling and is determined.
Specifically, in the embodiment of the present invention, when the corresponding sequence of first signal includes irrigating assorted sequence, the sequence
Configuration information includes：
It is described to irrigate assorted sequence length according to the corresponding time-domain OFDM symbol number determination of the first signal；
The index for irrigating assorted sequence is determined according to one or more of following information：Cell index, the index of UE, letter
The index of OFDM symbol where enabling the value of instruction, the index and the first signal of the first signal place subframe.
Further, in the embodiment of the present invention, when the corresponding sequence of the first signal further includes PN sequences, the sequence is matched
Confidence ceases：The initial value of PN sequences is determined according to cell index.
In conclusion described device of the embodiment of the present invention gives a kind of first signalling case, it is somebody's turn to do when base station uses
When scheme sends the first signal, low-power consumption terminal or the UE in low-power consumption mode can be made to further decrease power consumption.
In the 13rd embodiment of the present invention, a kind of transmitting device of down control channel is provided, as shown in Figure 10, packet
It includes：
Signal receiving module 1010, for detecting this UE corresponding that base station is sent according to the configuration information of the first signal
One signal；
Signal detection module 1020, for when detecting corresponding first signals of this UE, detecting first signal correspondence
Physical downlink control channel PDCCH.
In the embodiment of the present invention, the configuration information of the first signal includes：The time-domain position information of first signal, the first signal
Frequency domain position information and the first signal at least one of signal type information.
Further, in the embodiment of the present invention, signal receiving module 1010 specifically includes：
Receiving submodule receives the first letter that base station is sent for the time-domain position and frequency domain position according to the first signal
Number；
Determination sub-module obtains the first signal, and utilize first signal pair for the signal type according to the first signal
The first signal received carries out coherent detection, to determine whether to detect corresponding first signals of the affiliated UE of the present apparatus.
Wherein, receiving submodule is specifically used for the frequency domain position according to the first signal, determines the narrowband where the first signal
Resource block index where index and/or the first signal；According to the time-domain position of the first signal, the son where the first signal is determined
OFDM symbol where frame and/or the first signal.
In one particular embodiment of the present invention, receiving submodule is specifically used for：
The subframe where the first signal is determined according to the period of the first signal of signaling instruction and/or offset；
Alternatively, according to the corresponding search space initial positions PDCCH, the subframe where the first signal is determined；
Specifically, in the embodiment of the present invention, according to the corresponding search space initial positions PDCCH, first letter is determined
Subframe where number is subframe { n-k0,n-k1,…,n-kX-1}.Wherein, n is the starting subframe of the corresponding search spaces PDCCH
Alternatively, according to the initial position of the corresponding numbers of repetition of PDCCH, the subframe where the first signal is determined；
Specifically, in the embodiment of the present invention, according to the initial position of the corresponding numbers of repetition of PDCCH, described first is determined
Subframe where signal is subframe { m-k0,m-k1,…,m-kX-1, wherein m is the starting subframe of the corresponding numbers of repetition of PDCCH,
The value of the corresponding numbers of repetition of PDCCH is { 1,2 ..., Rmax }；
Alternatively, according to the initial position of PDCCH, the subframe where determining first signal is subframe { h-k0,h-
k1,…,h-kX-1}；H is that PDCCH originates subframe；
Wherein, k0、k1、…、kX-1Value be value that base station and UE make an appointment, or the value for signaling instruction；The value root of X
According to one or more related in following parameter：The covering grade of terminal, the maximum value of the corresponding number of repetition of the PDCCH
The period of Rmax and the corresponding search spaces the PDCCCH.
Further, in the embodiment of the present invention, receiving submodule determine the OFDM symbol where the first signal can with but not
It is limited to：3rd OFDM symbol and/or the 4th OFDM symbol in subframe, or, to son since g-th of OFDM symbol in subframe
Frame end, the wherein value of g are configured by high-level signaling..
Further, in the embodiment of the present invention, the signal type of the first signal include the corresponding sequence of the first signal and/or
Sequence configuration information；
Wherein, the corresponding sequence of the first signal includes one or more of following sequence：Irrigate assorted sequence, ZC sequences, PN
Sequence and CGS sequences.
In one particular embodiment of the present invention, when the corresponding sequence of the first signal includes ZC sequences, sequence configuration
Information includes：Between ZC sequence lengths, the root sequence of ZC sequences, the corresponding cyclic shift value of ZC sequences and the cyclic shift of ZC sequences
Every the method for determination of value.
Specifically, in the present embodiment, ZC sequence lengths, the root sequence of ZC sequences, the corresponding cyclic shift of ZC sequences are determined
The mode of the cyclic shift interval value of value and ZC sequences includes：
It is determined according to the corresponding subcarrier in frequency domain number of the first signal, or according to the corresponding subcarrier in frequency domain of the first signal
Number and time-domain OFDM symbol number, determine ZC sequence lengths；
The root sequence of ZC sequences is obtained according to cell index；
According to cell index, the index of UE, the deviant of high-level signaling instruction, the index of subframe where the first signal, the
The index of time slot where one signal, one or more cycles for obtaining ZC sequences during OFDM symbol indexes where the first signal are moved
Place value；
Cyclic shift interval is obtained according to high-level signaling.
At this point, according to the signal type information of the first signal, the first signal is obtained, including：
According to sequence configuration information, ZC sequence lengths, the root sequence of ZC sequences, the corresponding cyclic shift value of ZC sequences are determined
With the cyclic shift interval value of ZC sequences；
According to following for the ZC sequence lengths, the root sequence of ZC sequences, the corresponding cyclic shift value of ZC sequences and ZC sequences
Ring shift intervals value, obtains the first signal.
In the still another embodiment of the present invention, when the corresponding sequence of the first signal includes CGS sequences, sequence configuration
Information includes：The determination of sequence length, the corresponding cyclic shift value of CGS sequences and the corresponding cyclic shift interval value of CGS sequences
Mode.
Specifically, in the present embodiment, determine that sequence length, the corresponding cyclic shift value of CGS sequences and CGS sequences are corresponding
The mode of cyclic shift interval value includes：
It is determined according to the corresponding subcarrier in frequency domain number of the first signal, or according to the corresponding subcarrier in frequency domain of the first signal
Number and time-domain OFDM symbol number determine the length of CGS sequences；
According to the index of cell, the index of UE, the deviant of high-level signaling instruction, the index of subframe where the first signal,
The index of time slot where first signal, it is one or more in the index of OFDM symbol where the first signal, determine cyclic shift
Value；
Cyclic shift interval is obtained according to high-level signaling.
At this point, according to the signal type of the first signal, the first signal is obtained, including：
According to sequence configuration information, sequence length, the corresponding cyclic shift value of CGS sequences and the CGS sequences of CGS sequences are determined
The cyclic shift interval value of row；
According to the sequence length of CGS sequences, the cyclic shift interval of CGS sequences corresponding cyclic shift value and CGS sequences
Value, obtains the first signal.
In the still another embodiment of the present invention, the corresponding sequence of the first signal can be to irrigate assorted sequence, at this point, sequence
Configuration information includes：Irrigate the method for determination of assorted sequence length and the index of Wo Shi sequences.
Specifically, in the present embodiment, is determined according to the corresponding time-domain OFDM symbol number of the first signal and irrigate assorted sequence length；
According to cell index, the index of UE, the value of signaling instruction, OFDM symbols where the index and the first signal of subframe where the first signal
Number index in it is one or more, obtain irrigate assorted sequence index.
At this point, according to the signal type of the first signal, the first signal is obtained, including：
According to sequence configuration information, the length and index for irrigating assorted sequence are determined；
According to the length and index for irrigating assorted sequence, the first signal is obtained.
Further, in the embodiment of the present invention, when the corresponding sequence of the first signal further includes PN sequences, the sequence is matched
Confidence ceases：The initial value of PN sequences is determined according to cell index.
In conclusion using the UE of described device of the embodiment of the present invention, only detect that base station is sent to the first of this UE
Signal just carries out the blind Detecting of PDCCH, it is seen then that the present invention can be such that terminal is obtained with lower power consumption by introducing the first signal
Obtain downlink information.
In the 14th embodiment of the present invention, a kind of base station is provided, as shown in figure 11, including：First memory 1110
With first processor 1120, wherein be stored with computer instruction in first memory 1110, first processor 1120 passes through execution
The computer instruction, to realize following methods：
According to the configuration information of the first signal, the first signal is sent to one or more UE；
After sending first signal, the corresponding Physical Downlink Control Channel of first signal is sent to the UE
PDCCH。
In the present embodiment, first embodiment may refer to for the implementation of first processor 1120, it is no longer superfluous herein
It states.
In conclusion using the base station described in the embodiment of the present invention, terminal can be made to obtain downlink letter with lower power consumption
Breath.
In the 15th embodiment of the present invention, a kind of user equipment (UE) is provided, as shown in figure 12, including：Second storage
Device 1210 and second processor 1220, wherein computer instruction is stored in second memory 1210, second processor 1220 is logical
It crosses and executes the computer instruction, to realize following methods：
Corresponding first signals of this UE that base station is sent are detected according to the configuration information of the first signal；
When detecting corresponding first signals of this UE, the corresponding Physical Downlink Control Channel of the first signal is detected
PDCCH。
In the present embodiment, second embodiment may refer to for the implementation of second processor 1220, it is no longer superfluous herein
It states.
In conclusion using UE described in the embodiment of the present invention, only detect that base station is sent to the first signal of this UE,
Carry out the blind Detecting of PDCCH, it is seen then that the present invention can make terminal obtain downlink with lower power consumption by introducing the first signal
Information.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be with different from shown in sequence execution herein
The step of going out or describing, either they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (42)
1. a kind of transmission method of down control channel, which is characterized in that including：
Base station sends the first signal according to the configuration information of the first signal to one or more user equipment (UE)s；
Base station sends the corresponding Physical Downlink Control Channel of first signal after sending first signal, to the UE
PDCCH。
2. the method as described in claim 1, which is characterized in that the configuration information of first signal includes：First signal
At least one of the signal type of time-domain position, the frequency domain position of the first signal and the first signal.
3. method as claimed in claim 2, which is characterized in that
The time-domain position of first signal includes at least one of following：It is orthogonal where subframe where first signal and the first signal
Frequency division multiplex OFDM symbol；
The frequency domain position of first signal includes at least one of following：Narrowband index where first signal, the first signal institute
Resource block index；
The signal type of first signal includes at least one of following：The corresponding sequence of first signal, sequence configuration information.
4. method as claimed in claim 3, which is characterized in that the method for determination of subframe includes as follows where first signal
One of mode：
The subframe where first signal is determined according to the period of the first signal of signaling instruction and/or offset；
According to the corresponding search space initial positions PDCCH, the subframe where determining first signal is subframe { n-k0,n-
k1,…,n-kX-1}；
According to the initial position of the corresponding numbers of repetition of PDCCH, the subframe where determining first signal is subframe { m-k0,m-
k1,…,m-kX-1}；
According to the initial position of PDCCH, the subframe where determining first signal is subframe { h-k0,h-k1,…,h-kX-1}；
Wherein, n is the starting subframe of the corresponding search spaces PDCCH, and m is the starting subframe of the corresponding numbers of repetition of PDCCH, h
Subframe, k are originated for PDCCH0、k1、…、kX-1Value be value that base station and UE make an appointment, or the value for signaling instruction；X's
Value is according to one or more related in following parameter：The covering grade of terminal, the maximum of the corresponding number of repetition of the PDCCH
The period of value search space corresponding with the PDCCCH.
5. method as claimed in claim 3, which is characterized in that OFDM symbol where first signal includes：In subframe
Three OFDM symbols and/or the 4th OFDM symbol, or, terminating to subframe since g-th of OFDM symbol in subframe, wherein g
Value configured by high-level signaling.
6. method as claimed in claim 3, which is characterized in that the corresponding sequence of first signal includes in following sequence
It is one or more：Irrigate assorted sequence, ZC sequences, pseudo noise PN sequences and computer search sequence C GS.
7. method as claimed in claim 6, which is characterized in that when the corresponding sequence of first signal includes ZC sequences,
The sequence configuration information includes one or more of lower information：
The ZC sequence lengths determine according to the corresponding subcarrier in frequency domain number of the first signal, or corresponding according to the first signal
Subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The root sequence of the ZC sequences is determined according to cell index；
The corresponding cyclic shift value of the ZC sequences is determined according to one or more of following information：The rope of cell index, UE
Draw, the index and the first letter of time slot where the index, the first signal of subframe where the deviant of high-level signaling instruction, the first signal
The index of OFDM symbol where number；
The cyclic shift interval value of the ZC sequences is configured according to high-level signaling and is determined.
8. method as claimed in claim 6, which is characterized in that when the corresponding sequence of first signal includes CGS sequences, institute
It includes one or more of lower information to state sequence configuration information：
The CGS sequence lengths are determined according to the corresponding subcarrier in frequency domain number of the first signal, or are corresponded to according to the first signal
Subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The corresponding cyclic shift value of the CGS sequences is determined according to one or more of following information：The rope of cell index, UE
Draw, the index and the first letter of time slot where the index, the first signal of subframe where the deviant of high-level signaling instruction, the first signal
The index of OFDM symbol where number；
The cyclic shift interval value of the CGS sequences is configured according to high-level signaling and is determined.
9. method as claimed in claim 6, which is characterized in that when the corresponding sequence of first signal includes irrigating assorted sequence
When, the sequence configuration information includes：
It is described to irrigate assorted sequence length according to the corresponding time-domain OFDM symbol number determination of the first signal；
The index for irrigating assorted sequence is determined according to one or more of following information：Cell index, the index of UE, signaling refer to
The index of OFDM symbol where the index and the first signal of the value, the first signal place subframe shown.
10. according to the method described in claim 7 or 8 or 9, which is characterized in that when the corresponding sequence of first signal is also wrapped
When including PN sequences, the sequence configuration information includes：
The initial value of the PN sequences is determined according to cell index.
11. a kind of transmission method of down control channel, which is characterized in that including：
UE detects corresponding first signals of the UE that base station is sent according to the configuration information of the first signal；
UE detects the corresponding physical downlink control channel PDCCH of the first signal when detecting corresponding first signal.
12. method as claimed in claim 11, which is characterized in that the configuration information of first signal includes：First signal
Time-domain position, the frequency domain position of the first signal and at least one of the signal type of the first signal.
13. method as claimed in claim 12, which is characterized in that
The time-domain position of first signal includes at least one of following：It is orthogonal where subframe where first signal and the first signal
Frequency division multiplex OFDM symbol；
The frequency domain position of first signal includes at least one of following：Narrowband index where first signal, the first signal institute
Resource block index；
The signal type of first signal includes at least one of following：The corresponding sequence of first signal, sequence configuration information.
14. method as claimed in claim 13, which is characterized in that the method for determination of subframe where first signal includes such as
One of under type：
The subframe where first signal is determined according to the period of the first signal of signaling instruction and/or offset；
According to the corresponding search space initial positions PDCCH, the subframe where determining first signal is subframe { n-k0,n-
k1,…,n-kX-1}；
According to the initial position of the corresponding numbers of repetition of PDCCH, the subframe where determining first signal is subframe { m-k0,m-
k1,…,m-kX-1}；
According to the initial position of PDCCH, the subframe where determining first signal is subframe { h-k0,h-k1,…,h-kX-1}；
Wherein, n is the starting subframe of the corresponding search spaces PDCCH, and m is the starting subframe of the corresponding numbers of repetition of PDCCH, h
Subframe, k are originated for PDCCH0、k1、…、kX-1Value be value that base station and UE make an appointment, or the value for signaling instruction；X's
Value is according to one or more related in following parameter：The covering grade of terminal, the maximum of the corresponding number of repetition of the PDCCH
The period of value search space corresponding with the PDCCCH.
15. method as claimed in claim 13, which is characterized in that OFDM symbol where first signal includes：In subframe
Third OFDM symbol and/or the 4th OFDM symbol, or, terminate to subframe since g-th of OFDM symbol in subframe, wherein
The value of g is configured by high-level signaling.
16. method as claimed in claim 13, which is characterized in that the corresponding sequence of first signal includes in following sequence
One or more：Irrigate assorted sequence, ZC sequences, pseudo noise PN sequences and computer search sequence C GS.
17. the method described in claim 16, which is characterized in that when the corresponding sequence of first signal includes ZC sequences
When, the sequence configuration information includes one or more of lower information：
The ZC sequence lengths determine according to the corresponding subcarrier in frequency domain number of the first signal, or corresponding according to the first signal
Subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The root sequence of the ZC sequences is determined according to cell index；
The corresponding cyclic shift value of the ZC sequences is determined according to one or more of following information：The rope of cell index, UE
Draw, the index and the first letter of time slot where the index, the first signal of subframe where the deviant of high-level signaling instruction, the first signal
The index of OFDM symbol where number；
The cyclic shift interval value of the ZC sequences is configured according to high-level signaling and is determined.
18. the method described in claim 16, which is characterized in that when the corresponding sequence of first signal includes CGS sequences
When, the sequence configuration information includes one or more of lower information：
The CGS sequence lengths are determined according to the corresponding subcarrier in frequency domain number of the first signal, or are corresponded to according to the first signal
Subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The corresponding cyclic shift value of the CGS sequences is determined according to one or more of following information：The rope of cell index, UE
Draw, the index and the first letter of time slot where the index, the first signal of subframe where the deviant of high-level signaling instruction, the first signal
The index of OFDM symbol where number；
The cyclic shift interval value of the CGS sequences is configured according to high-level signaling and is determined.
19. the method described in claim 16, which is characterized in that when the corresponding sequence of first signal includes irrigating assorted sequence
When, the sequence configuration information includes：
It is described to irrigate assorted sequence length according to the corresponding time-domain OFDM symbol number determination of the first signal；
The index for irrigating assorted sequence is determined according to one or more of following information：Cell index, the index of UE, signaling refer to
The index of OFDM symbol where the index and the first signal of the value, the first signal place subframe shown.
20. according to the method described in claim 17 or 18 or 19, which is characterized in that when the corresponding sequence of first signal also
When including PN sequences, the sequence configuration information includes：
The initial value of the PN sequences is determined according to cell index.
21. a kind of transmitting device of down control channel, which is characterized in that it is applied to base station side, including：
First processing module sends the first signal for the configuration information according to the first signal to one or more UE；
Second processing module sends described for after the first processing module sends first signal to the UE
The corresponding physical downlink control channel PDCCH of one signal.
22. device as claimed in claim 21, which is characterized in that the configuration information of first signal includes：First signal
Time-domain position, the frequency domain position of the first signal and at least one of the signal type of the first signal.
23. device as claimed in claim 22, which is characterized in that
The time-domain position of first signal includes at least one of following：It is orthogonal where subframe where first signal and the first signal
Frequency division multiplex OFDM symbol；
The frequency domain position of first signal includes at least one of following：Narrowband index where first signal, the first signal institute
Resource block index；
The signal type of first signal includes at least one of following：The corresponding sequence of first signal, sequence configuration information.
24. device as claimed in claim 23, which is characterized in that the method for determination of subframe where first signal includes such as
One of under type：
The subframe where first signal is determined according to the period of the first signal of signaling instruction and/or offset；
According to the corresponding search space initial positions PDCCH, the subframe where determining first signal is subframe { n-k0,n-
k1,…,n-kX-1}；
According to the initial position of the corresponding numbers of repetition of PDCCH, the subframe where determining first signal is subframe { m-k0,m-
k1,…,m-kX-1}；
According to the initial position of PDCCH, the subframe where determining first signal is subframe { h-k0,h-k1,…,h-kX-1}；
Wherein, n is the starting subframe of the corresponding search spaces PDCCH, and m is the starting subframe of the corresponding numbers of repetition of PDCCH, h
Subframe, k are originated for PDCCH0、k1、…、kX-1Value be value that base station and UE make an appointment, or the value for signaling instruction；X's
Value is according to one or more related in following parameter：The covering grade of terminal, the maximum of the corresponding number of repetition of the PDCCH
The period of value search space corresponding with the PDCCCH.
25. device as claimed in claim 23, which is characterized in that OFDM symbol where first signal includes：In subframe
Third OFDM symbol and/or the 4th OFDM symbol, or, terminate to subframe since g-th of OFDM symbol in subframe, wherein
The value of g is configured by high-level signaling.
26. device as claimed in claim 23, which is characterized in that the corresponding sequence of first signal includes in following sequence
One or more：Irrigate assorted sequence, ZC sequences, pseudo noise PN sequences and computer search sequence C GS.
27. device as claimed in claim 26, which is characterized in that when the corresponding sequence of first signal includes ZC sequences
When, the sequence configuration information includes one or more of lower information：
The ZC sequence lengths determine according to the corresponding subcarrier in frequency domain number of the first signal, or corresponding according to the first signal
Subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The root sequence of the ZC sequences is determined according to cell index；
The corresponding cyclic shift value of the ZC sequences is determined according to one or more of following information：The rope of cell index, UE
Draw, the index and the first letter of time slot where the index, the first signal of subframe where the deviant of high-level signaling instruction, the first signal
The index of OFDM symbol where number；
The cyclic shift interval value of the ZC sequences is configured according to high-level signaling and is determined.
28. device as claimed in claim 26, which is characterized in that when the corresponding sequence of first signal include CGS sequences,
The sequence configuration information includes one or more of lower information：
The CGS sequence lengths are determined according to the corresponding subcarrier in frequency domain number of the first signal, or are corresponded to according to the first signal
Subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The corresponding cyclic shift value of the CGS sequences is determined according to one or more of following information：The rope of cell index, UE
Draw, the index and the first letter of time slot where the index, the first signal of subframe where the deviant of high-level signaling instruction, the first signal
The index of OFDM symbol where number；
The cyclic shift interval value of the CGS sequences is configured according to high-level signaling and is determined.
29. device as claimed in claim 26, which is characterized in that when the corresponding sequence of first signal includes irrigating assorted sequence
When, the sequence configuration information includes：
It is described to irrigate assorted sequence length according to the corresponding time-domain OFDM symbol number determination of the first signal；
The index for irrigating assorted sequence is determined according to one or more of following information：Cell index, the index of UE, signaling refer to
The index of OFDM symbol where the index and the first signal of the value, the first signal place subframe shown.
30. according to the device described in claim 27 or 28 or 29, which is characterized in that when the corresponding sequence of first signal also
When including PN sequences, the sequence configuration information includes：
The initial value of the PN sequences is determined according to cell index.
31. a kind of transmitting device of down control channel, which is characterized in that it is applied to the sides UE, including：
Signal receiving module, for detecting corresponding first letters of the UE that base station is sent according to the configuration information of the first signal
Number；
Signal detection module, for when detecting corresponding first signal, detecting the corresponding physical down control of first signal
Channel PDCCH processed.
32. device as claimed in claim 31, which is characterized in that the configuration information of first signal includes：First signal
Time-domain position, the frequency domain position of the first signal and at least one of the signal type of the first signal.
33. device as claimed in claim 32, which is characterized in that
The time-domain position of first signal includes at least one of following：It is orthogonal where subframe where first signal and the first signal
Frequency division multiplex OFDM symbol；
The frequency domain position of first signal includes at least one of following：Narrowband index where first signal, the first signal institute
Resource block index；
The signal type of first signal includes at least one of following：The corresponding sequence of first signal, sequence configuration information.
34. device as claimed in claim 33, which is characterized in that the method for determination of subframe where first signal includes such as
One of under type：
The subframe where first signal is determined according to the period of the first signal of signaling instruction and/or offset；
According to the corresponding search space initial positions PDCCH, the subframe where determining first signal is subframe { n-k0,n-
k1,…,n-kX-1}；
According to the initial position of the corresponding numbers of repetition of PDCCH, the subframe where determining first signal is subframe { m-k0,m-
k1,…,m-kX-1}；
According to the initial position of PDCCH, the subframe where determining first signal is subframe { h-k0,h-k1,…,h-kX-1}；
Wherein, n is the starting subframe of the corresponding search spaces PDCCH, and m is the starting subframe of the corresponding numbers of repetition of PDCCH, h
Subframe, k are originated for PDCCH0、k1、…、kX-1Value be value that base station and UE make an appointment, or the value for signaling instruction；X's
Value is according to one or more related in following parameter：The covering grade of terminal, the maximum of the corresponding number of repetition of the PDCCH
The period of value search space corresponding with the PDCCCH.
35. device as claimed in claim 33, which is characterized in that OFDM symbol where first signal includes：In subframe
Third OFDM symbol and/or the 4th OFDM symbol, or, terminate to subframe since g-th of OFDM symbol in subframe, wherein
The value of g is configured by high-level signaling.
36. device as claimed in claim 33, which is characterized in that the corresponding sequence of first signal includes in following sequence
One or more：Irrigate assorted sequence, ZC sequences, pseudo noise PN sequences and computer search sequence C GS.
37. device as claimed in claim 36, which is characterized in that when the corresponding sequence of first signal includes ZC sequences
When, the sequence configuration information includes one or more of lower information：
The ZC sequence lengths determine according to the corresponding subcarrier in frequency domain number of the first signal, or corresponding according to the first signal
Subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The root sequence of the ZC sequences is determined according to cell index；
The corresponding cyclic shift value of the ZC sequences is determined according to one or more of following information：The rope of cell index, UE
Draw, the index and the first letter of time slot where the index, the first signal of subframe where the deviant of high-level signaling instruction, the first signal
The index of OFDM symbol where number；
The cyclic shift interval value of the ZC sequences is configured according to high-level signaling and is determined.
38. device as claimed in claim 36, which is characterized in that when the corresponding sequence of first signal includes CGS sequences
When, the sequence configuration information includes one or more of lower information：
The CGS sequence lengths are determined according to the corresponding subcarrier in frequency domain number of the first signal, or are corresponded to according to the first signal
Subcarrier in frequency domain number and time-domain OFDM symbol number determine；
The corresponding cyclic shift value of the CGS sequences is determined according to one or more of following information：The rope of cell index, UE
Draw, the index and the first letter of time slot where the index, the first signal of subframe where the deviant of high-level signaling instruction, the first signal
The index of OFDM symbol where number；
The cyclic shift interval value of the CGS sequences is configured according to high-level signaling and is determined.
39. device as claimed in claim 36, which is characterized in that when the corresponding sequence of first signal includes irrigating assorted sequence
When, the sequence configuration information includes：
It is described to irrigate assorted sequence length according to the corresponding time-domain OFDM symbol number determination of the first signal；
The index for irrigating assorted sequence is determined according to one or more of following information：Cell index, the index of UE, signaling refer to
The index of OFDM symbol where the index and the first signal of the value, the first signal place subframe shown.
40. according to the device described in claim 37 or 38 or 39, which is characterized in that when the corresponding sequence of first signal also
When including PN sequences, the sequence configuration information includes：
The initial value of the PN sequences is determined according to cell index.
41. a kind of base station, which is characterized in that including：First memory and first processor, wherein in the first memory
It is stored with computer instruction, the first processor is by executing the computer instruction, to realize following methods：
According to the configuration information of the first signal, the first signal is sent to one or more UE；
After sending first signal, the corresponding physical downlink control channel PDCCH of first signal is sent to the UE.
42. a kind of user equipment (UE), which is characterized in that including：Second memory and second processor, wherein described second deposits
Computer instruction is stored in reservoir, the second processor is by executing the computer instruction, to realize following methods：
Corresponding first signals of this UE that base station is sent are detected according to the configuration information of the first signal；
When detecting corresponding the first signals of this UE, the corresponding physical downlink control channel PDCCH of the first signal is detected.
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| CN201710182696.8A CN108632789A (en) | 2017-03-24 | 2017-03-24 | Transmission method, device, base station and the user equipment of down control channel |
| PCT/CN2018/080360 WO2018171772A1 (en) | 2017-03-24 | 2018-03-23 | Downlink control channel transmission method, apparatus, base station, and user equipment |
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| CN201710182696.8A CN108632789A (en) | 2017-03-24 | 2017-03-24 | Transmission method, device, base station and the user equipment of down control channel |
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