CN106789826A - Downlink transfer detection method, base station and terminal - Google Patents
Downlink transfer detection method, base station and terminal Download PDFInfo
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- CN106789826A CN106789826A CN201710194297.3A CN201710194297A CN106789826A CN 106789826 A CN106789826 A CN 106789826A CN 201710194297 A CN201710194297 A CN 201710194297A CN 106789826 A CN106789826 A CN 106789826A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- Mobile Radio Communication Systems (AREA)
Abstract
The present invention proposes a kind of downlink transfer detection method, base station and terminal, wherein, downlink transfer detection method includes：Enhancing reference signal is issued in downlink transmission process, the channel occupancy situation of base station is determined according to the enhancing reference signal for terminal.By technical scheme, reference signal density higher can be provided for terminal, realize the coverage enhancement to reference signal, so that terminal gets the enhancing reference signal of base station issue more conveniently, to determine the channel occupancy situation of base station, so that terminal can be smoothed out the work such as channel-monitoring/detection and channel estimation according to the enhancing reference signal, it is easy to terminal to carry out effective downlink transfer detection according to the enhancing reference signal, improves the validity of communication.
Description
【Technical field】
The present invention relates to communication technical field, more particularly to a kind of downlink transfer detection method, base station and terminal.
【Background technology】
MulteFire technologies are that LTE (Long Term Evolution, Long Term Evolution) is expanded to unauthorized frequency by one kind
The wireless access technology of section, may be simply referred to as MF, and in the technology, unauthorized frequency range carrier wave can not be by mandate frequency range carrier wave independence
Service is provided.
At present, to make, multiple unauthorized frequency range equipment (such as Wi-Fi equipment) are fair to take unauthorized band channels, and avoids
Interfering between unauthorized frequency range equipment, the carrier sense technology of similar Wi-Fi is introduced in MF (MulteFire) physical layer
LBT (Listen Before Talk, listem-before-talk) mechanism, it is occupied to unauthorized band channels in base station or terminal monitoring
When, i.e. when LBT fails, must not sending signal, when listening to unauthorized band channels and being idle, be i.e. during LBT successes, just send and believe
Number.
However, due to for the unauthorized frequency range equipment positioned at some Special geographical positions, for example, in room located underground
Water meter and ammeter etc., because this kind of channel fading in geographical position is than larger, the transmission loss of signal also than larger, wherein, base station
The reference signal of issue is easy to decline, makes terminal be difficult to carry out channel-monitoring/detection and channel according to effective reference signal
The work such as estimation, and then influence terminal carries out downlink transfer detection.
Therefore, how to lift terminal carries out the validity of downlink transfer detection, as technical problem urgently to be resolved hurrily at present.
【The content of the invention】
The embodiment of the invention provides a kind of downlink transfer detection method, base station and terminal, it is intended in solving correlation technique
Terminal is influenceed because of reference signal decline carries out the technical problem of the accuracy of downlink transfer detection, and reference signal can be carried out
Coverage enhancement, so that terminal is smoothed out the work such as channel-monitoring/detection and channel estimation according to the reference signal, so that effectively
Carry out downlink transfer detection.
In a first aspect, a kind of downlink transfer detection method is the embodiment of the invention provides, including：In downlink transmission process
Issue enhancing reference signal, the channel occupancy situation of base station is determined for terminal according to the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：Issue basic reference signal, for the terminal according to
Whether busy channel carries out downlink transfer for the basic reference signal and base station described in the enhancing reference signal joint-detection, its
In, the basic reference signal include cell common reference signal, demodulated reference signal and synchronization message signal in one or
It is multinomial.
It is alternatively, described to issue the step of strengthening reference signal in the above embodiment of the present invention, specifically include：Passing
The issue enhancing reference signal in first downlink times interval in defeated chance, so that the terminal determines descending biography
Defeated original position.
It is alternatively, described to issue the step of strengthening reference signal in the above embodiment of the present invention, specifically include：Passing
The issue enhancing reference signal in each downlink times interval in defeated chance.
In the above embodiment of the present invention, alternatively, also include：Issue has detection in a downlink times interval
During signal, judge whether that coverage enhancement can be completed in one downlink times interval；When judged result is to be, no
Issue the enhancing reference signal；When judged result is no, the step of strengthening reference signal is issued into described, for many
The enhancing reference signal is all issued in individual downlink times interval.
In the above embodiment of the present invention, alternatively, also include：According to the cell common reference signal, it is determined that described
Strengthen the signal sequence and time-frequency location of reference signal.
In the above embodiment of the present invention, alternatively, also include：The cell ID of cell according to where the terminal, really
The time-frequency location of the fixed enhancing reference signal.
In the above embodiment of the present invention, alternatively, it is described issue enhancing reference signal the step of, including：By all
The identical time-frequency location of antenna port issues the enhancing reference signal.
In the above embodiment of the present invention, alternatively, the actual quantity of the antenna port of the enhancing reference signal is issued
Actual quantity with the antenna port for issuing the cell common reference signal is identical, and the issue enhancing reference signal
Step, including：The different enhancing reference signals are issued in different positions by different antennas.
In the above embodiment of the present invention, alternatively, also include：According to the demodulated reference signal, the enhancing is determined
The time-frequency location of reference signal.
In the above embodiment of the present invention, alternatively, also include：In a Physical Resource Block, the enhancing is with reference to letter
Number time-frequency location it is identical with the time-frequency location of the demodulated reference signal.
In the above embodiment of the present invention, alternatively, it is described issue enhancing reference signal the step of, including：Under one
First time slot of row Transmission Time Interval and/or second time slot issue the enhancing reference signal.
In the above embodiment of the present invention, alternatively, the quantity of the OFDM symbol that the enhancing reference signal is occupied is pre-
Fixed number amount.
In the above embodiment of the present invention, alternatively, also include：According to the length of current downlink Transmission Time Interval, really
The quantity of the OFDM symbol that the fixed enhancing reference signal is occupied.
In the above embodiment of the present invention, alternatively, the frequency domain resource size of the enhancing reference signal is predefined size.
In the above embodiment of the present invention, alternatively, also include：According to the enhancing reference signal in a downlink transfer
The quantity of the OFDM symbol occupied in time interval and the density of each Physical Resource Block, determine the frequency of the enhancing reference signal
Domain resource, wherein, transmission density constant of the enhancing reference signal in a downlink times interval.
In the above embodiment of the present invention, alternatively, also include：According to the channel state information reference signals, it is determined that
The time-frequency location of the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：When the enhancing reference signal is sent, it is determined that described
Whether enhancing reference signal conflicts with common signal or user's signal specific；When it is determined that sending conflict, corresponding conflict is performed
Processing mode.
In the above embodiment of the present invention, alternatively, also include：According to host system message block, the enhancing reference is determined
The frequency domain resource of signal.
In the above embodiment of the present invention, alternatively, also include：Rule is obtained according to predetermined, the enhancing reference is determined
The frequency domain resource of signal, wherein, the predetermined function for obtaining rule cell ID of cell where terminal.
In the above embodiment of the present invention, alternatively, it is characterised in that the time-frequency location of the enhancing reference signal is solid
Fixed.
In the above embodiment of the present invention, alternatively, according to the occupied OFDM symbol in a downlink times interval
Quantity, determine it is described enhancing reference signal time-frequency location.
It is alternatively, described to issue the step of strengthening reference signal in the above embodiment of the present invention, specifically include：Complete
The issue enhancing reference signal in bandwidth.
In the above embodiment of the present invention, alternatively, it is described issue enhancing reference signal the step of, including：In part band
The issue enhancing reference signal in wide, wherein, the fractional bandwidth is the physics of the predetermined quantity that centre is removed in full bandwidth
Bandwidth after Resource Block.
Second aspect, the embodiment of the invention provides a kind of base station, including：Enhancing reference signal release unit, descending
Enhancing reference signal is issued in transmitting procedure, the channel occupancy feelings of base station are determined according to the enhancing reference signal for terminal
Condition.
In the above embodiment of the present invention, alternatively, also include：Joint release unit, issues basic reference signal, for
Whether busy channel enters the terminal for base station according to the basic reference signal and the enhancing reference signal joint-detection
Row downlink transfer, wherein, the basic reference signal includes cell common reference signal, demodulated reference signal and synchronization message letter
One or more in number.
In the above embodiment of the present invention, alternatively, it is described enhancing reference signal release unit specifically for：In conveyer
The issue enhancing reference signal in first downlink times interval in meeting, so that the terminal determines downlink transfer
Original position.
In the above embodiment of the present invention, alternatively, it is described enhancing reference signal release unit specifically for：In conveyer
The issue enhancing reference signal in each downlink times interval in meeting.
In the above embodiment of the present invention, alternatively, also include：Pre- judging unit, at a downlink times interval
When interior issue has detectable signal, judge whether that coverage enhancement can be completed in one downlink times interval, wherein, when
Judged result, when judged result is no, strengthens with reference to letter when being, the enhancing reference signal not to be issued into the issue
Number the step of, for multiple downlink times interval in all issue the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：First determining unit, according to the cell common reference
Signal, determines the signal sequence and time-frequency location of the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：5th determining unit, the cell according to where the terminal
Cell ID, determine it is described enhancing reference signal time-frequency location.
In the above embodiment of the present invention, alternatively, the enhancing reference signal release unit is used for：By all antennas
The identical time-frequency location of port issues the enhancing reference signal.
In the above embodiment of the present invention, alternatively, the actual quantity of the antenna port of the enhancing reference signal is issued
Actual quantity with the antenna port for issuing the cell common reference signal is identical, and the enhancing reference signal issue is single
Unit is used for：The different enhancing reference signals are issued in different positions by different antennas.
In the above embodiment of the present invention, alternatively, also include：6th determining unit, according to the demodulated reference signal,
Determine the time-frequency location of the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：In a Physical Resource Block, the enhancing is with reference to letter
Number time-frequency location it is identical with the time-frequency location of the demodulated reference signal.
In the above embodiment of the present invention, alternatively, the enhancing reference signal release unit is used for：In a descending biography
First time slot of defeated time interval and/or second time slot issue the enhancing reference signal.
In the above embodiment of the present invention, alternatively, the quantity of the OFDM symbol that the enhancing reference signal is occupied is pre-
Fixed number amount.
In the above embodiment of the present invention, alternatively, also include：7th determining unit, according to current downlink transmission time
The length at interval, determines the quantity of the OFDM symbol that the enhancing reference signal is occupied.
In the above embodiment of the present invention, alternatively, the frequency domain resource size of the enhancing reference signal is predefined size.
In the above embodiment of the present invention, alternatively, also include：8th determining unit, according to the enhancing reference signal
The quantity and the density of each Physical Resource Block of the OFDM symbol occupied in a downlink times interval, determine the increasing
The frequency domain resource of strong reference signal, wherein, transmission density of the enhancing reference signal in a downlink times interval
It is constant.
In the above embodiment of the present invention, alternatively, also include：9th determining unit, according to the channel condition information
Reference signal, determines the time-frequency location of the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：Conflict determination unit, is sending the enhancing with reference to letter
Number when, determine it is described enhancing reference signal whether conflict with common signal or user's signal specific；Clash handle unit, when it is determined that
When sending conflict, corresponding clash handle mode is performed.
In the above embodiment of the present invention, alternatively, also include：Second determining unit, according to host system message block, it is determined that
The frequency domain resource of the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：3rd determining unit, rule is obtained according to predetermined, it is determined that
The frequency domain resource of the enhancing reference signal, wherein, the predetermined letter for obtaining rule cell ID of cell where terminal
Number.
In the above embodiment of the present invention, alternatively, the time-frequency location of the enhancing reference signal is fixed.
In the above embodiment of the present invention, alternatively, the 4th determining unit, according to shared by a downlink times interval
According to OFDM symbol quantity, determine it is described enhancing reference signal time-frequency location.
In the above embodiment of the present invention, alternatively, the enhancing reference signal release unit is used for：Sent out in full bandwidth
Strengthen reference signal described in cloth.
In the above embodiment of the present invention, alternatively, the enhancing reference signal release unit is used for：In fractional bandwidth
Issue the enhancing reference signal, wherein, the fractional bandwidth be full bandwidth in remove centre predetermined quantity physical resource
Bandwidth after block.
The third aspect, the embodiment of the invention provides a kind of downlink transfer detection method, including：Obtain the increasing of base station issue
Strong reference signal；According to the enhancing reference signal, detect whether busy channel carries out downlink transfer for the base station.
In the above embodiment of the present invention, alternatively, also include：Obtain the basic reference signal of the base station issue, institute
Stating basic reference signal includes one or more in cell common reference signal, demodulated reference signal and synchronization message signal；
It is described according to the enhancing reference signal, the step of whether busy channel carries out downlink transfer for detection base station, specifically include：According to
Enhancing reference signal and the basic reference signal, whether busy channel carries out downlink transfer for base station described in joint-detection.
In the above embodiment of the present invention, alternatively, also include：Descending biography is carried out the base station busy channel is detected
In the case of defeated, determine it is described enhancing reference signal where downlink times at intervals of downlink transfer original position.
Fourth aspect, the embodiment of the invention provides a kind of terminal, including：First acquisition unit, obtains base station issue
Enhancing reference signal；Downlink transfer detection unit, according to the enhancing reference signal, detects whether busy channel enters for the base station
Row downlink transfer.
In the above embodiment of the present invention, alternatively, also include：Second acquisition unit, obtains the base of the base station issue
This reference signal, the basic reference signal is included in cell common reference signal, demodulated reference signal and synchronization message signal
One or more；The downlink transfer detection unit specifically for：According to enhancing reference signal and the basic reference
Signal, whether busy channel carries out downlink transfer for base station described in joint-detection.
In the above embodiment of the present invention, alternatively, also include：Original position determining unit, is detecting the base station
In the case that busy channel carries out downlink transfer, the downlink times where determining the enhancing reference signal are at intervals of descending
The original position of transmission.
5th aspect, the embodiment of the invention provides a kind of terminal, including：Processor；And memory, in the memory
Being stored with can be by the instruction of the computing device, and processor is used to call the instruction of the memory storage, holds
The following operation of row：Obtain the enhancing reference signal of base station issue；According to the enhancing reference signal, detect whether the base station accounts for
Downlink transfer is carried out with channel.
6th aspect, the embodiment of the invention provides a kind of base station, including emitter, receiver, memory and difference
The processor being connected with emitter, receiver and memory, being stored with the memory can be by the computing device
Instruction, and processor is used to call the instruction of the memory storage, performs following operation：Sent out in downlink transmission process
Cloth strengthens reference signal, determines the channel occupancy situation of base station according to the enhancing reference signal for terminal.
Above technical scheme, for correlation technique in influence the terminal to carry out downlink transfer detection because reference signal declines
Accuracy technical problem, enhancing reference signal can be issued by base station, the density of the enhancing reference signal is more than correlation
Original reference signal in technology, that is to say, that can provide reference signal density higher for terminal in above technical scheme,
Realize the coverage enhancement to reference signal so that terminal gets the enhancing of base station issue with reference to letter more conveniently
Number, to determine the channel occupancy situation of base station so that terminal can according to the enhancing reference signal be smoothed out channel-monitoring/
The work such as detection and channel estimation, is easy to terminal to carry out effective downlink transfer detection according to the enhancing reference signal, improves
The validity of communication.
【Brief description of the drawings】
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this area
For those of ordinary skill, without having to pay creative labor, can also obtain other attached according to these accompanying drawings
Figure.
Fig. 1 shows the flow chart of the downlink transfer detection method of one embodiment of the present of invention；
Fig. 2 to Fig. 6 shows the resource map of the enhancing reference signal based on cell common reference signal；
Fig. 7 shows the resource map of the enhancing reference signal based on demodulated reference signal；
Fig. 8 shows the block diagram of the base station of one embodiment of the present of invention；
Fig. 9 shows the flow chart of the downlink transfer detection method of an alternative embodiment of the invention；
Figure 10 shows the block diagram of the terminal of one embodiment of the present of invention；
Figure 11 shows the block diagram of the terminal of an alternative embodiment of the invention；
Figure 12 shows the block diagram of the base station of an alternative embodiment of the invention.
【Specific embodiment】
In order to be better understood from technical scheme, the embodiment of the present invention is retouched in detail below in conjunction with the accompanying drawings
State.
It will be appreciated that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
Its embodiment, belongs to the scope of protection of the invention.
The term for using in embodiments of the present invention is the purpose only merely for description specific embodiment, and is not intended to be limiting
The present invention." one kind ", " described " and " being somebody's turn to do " of singulative used in the embodiment of the present invention and appended claims
It is also intended to include most forms, unless context clearly shows that other implications.
Fig. 1 shows the flow chart of the downlink transfer detection method of one embodiment of the present of invention.
As shown in figure 1, the downlink transfer detection method of one embodiment of the present of invention, including：
Step 102, issues enhancing reference signal, so that terminal is according to the enhancing reference signal in downlink transmission process
Determine the channel occupancy situation of base station.
The density of the enhancing reference signal is more than original reference signal in correlation technique, that is to say, that above technical side
Reference signal density higher can be provided for terminal in case, that is, realize the coverage enhancement to reference signal so that terminal is more
Plus the enhancing reference signal that base station is issued conveniently and efficiently is got, to determine the channel occupancy situation of base station, so that terminal
The work such as channel-monitoring/detection and channel estimation can be smoothed out according to the enhancing reference signal, be easy to terminal according to the increasing
Strong reference signal carries out effective downlink transfer detection, improves the validity of communication.
In a kind of implementation of the invention, also include：Basic reference signal is issued, so that the terminal is according to
Whether busy channel carries out downlink transfer for basic reference signal and base station described in the enhancing reference signal joint-detection, wherein,
The basic reference signal includes or many in cell common reference signal, demodulated reference signal and synchronization message signal
.
Also issue strengthens reference signal on the basis of baseband signal is issued, and substantially increases the density of reference signal,
Terminal is more easily and effectively got effective reference signal to determine the channel occupancy situation of base station.
In a kind of implementation of the invention, enhancing reference signal can be served only for downlink transfer detection.
In another implementation of the invention, enhancing reference signal both can be used for downlink transfer detection, it is also possible to
For channel estimation.
In a kind of implementation of the invention, step 102 is specifically included：First downlink transfer in transmission opportunity
The issue enhancing reference signal, the original position of downlink transfer is determined for the terminal in time interval.I.e. for base station
The transmission opportunity initiated, terminal must judge the original position of this downlink transfer, also, its in the transmission opportunity
In his downlink times interval, enhancing reference signal is not sent.
Certainly, in another kind implementation of the invention, step 102 is specifically included：Each in transmission opportunity is descending
The issue enhancing reference signal in Transmission Time Interval, to strengthen the possibility that terminal detects enhancing reference signal, lifting
Communication success rate.
In a kind of implementation of the invention, also include：Issue has spy in a downlink times interval in advance
When surveying signal, judge whether that coverage enhancement can be completed in one downlink times interval；When judged result is to be,
The enhancing reference signal is not issued；When judged result is no, into step 102, between multiple downlink times
The enhancing reference signal is all issued every interior.
Wherein, detectable signal (DRS, Discover signal) contains MF-PSS/SSS (the primary/secondary synchronous letters of MF systems
Number), MF-PBCH (Physical Broadcast Channel, physical propagation channel) etc..
On the basis of above-mentioned each implementation, can be according to cell common reference signal, demodulated reference signal or channel
Three kinds of modes of state information reference signals come determine strengthen reference signal parameter, three kinds of modes are described respectively below.
First, the signal sequence and time-frequency of the enhancing reference signal according to the cell common reference signal, can be determined
Position.That is, the signal sequence and time-frequency location of enhancing reference signal are with the relevant parameter of cell common reference signal
Foundation is configured.
Wherein it is determined that the time-frequency location of the enhancing reference signal, including but not limited in the following manner：
1, the time-frequency location of the enhancing reference signal is fixed.The time-frequency location that can be fixed with direct access.
That is, the time-frequency location for strengthening reference signal will not change with cell common reference signal antenna port number.Further,
OFDM (Orthogonal Frequency in the time-frequency location and a TTI of enhancing reference signal occupied by downlink transfer
Division Multiplexing, orthogonal frequency division multiplexi) symbolic number is unrelated.
2, according to the quantity of the OFDM symbol occupied by a downlink times interval enhancing can be determined with reference to letter
Number time-frequency location.That is, the time-frequency location of the enhancing reference signal based on cell common reference signal is change, root
Antenna port number according to cell common reference signal has different time-frequency locations, further, strengthens the time-frequency position of reference signal
Put and also depend in a TTI (Transmission Time Interval, Transmission Time Interval) occupied by downlink transfer
OFDM symbol number is relevant.
3, the time-frequency location of the enhancing reference signal according to the cell ID of cell where the terminal, can be determined.
In addition, in a kind of implementation of the invention, the time-frequency location for strengthening reference signal also can be small with where terminal
The cell ID in area is unrelated.
For the process for issuing the enhancing reference signal, including but not limited in the following manner：
1, in a kind of implementation of the invention, step 102 includes：By the identical time-frequency location of all antenna ports
Issue the enhancing reference signal.That is, enhancing reference signal does not have the difference of antenna port.That is, all for increasing
On the time-frequency location of strong reference signal, the enhancing reference signal time-frequency location that each antenna port sends is identical, and signal
Also it is identical.Wherein, the time-frequency location of enhancing reference signal is the antenna port 0 based on cell common reference signal.
2, issue the actual quantity and the issue cell common reference signal of the antenna port of the enhancing reference signal
Antenna port actual quantity it is identical, and step 102 includes：Issue different in different positions by different antennas
The enhancing reference signal.
Second, the time-frequency location of the enhancing reference signal according to the demodulated reference signal, can also be determined.Strengthen
The resource impact of reference signal is based on demodulated reference signal (DMRS, Demodulation Reference Signal).
Sent on enhancing reference signal based on demodulated reference signal part physical Resource Block only in system bandwidth, tool
Body depends on the frequency domain resource of the CCCH of coverage enhancement, and the CCCH of the coverage enhancement is used to give terminal hair
Common control channel is sent to make and/or the specific control signaling of user, the frequency domain resource that it takes is { 8,16,32 } individual physical resource
Block.The frequency domain resource information of the CCCH of the coverage enhancement be by pre-define rule, or system configuration letter
Breath is obtained.
In a kind of implementation of the invention, also include：In a Physical Resource Block, the enhancing reference signal
Time-frequency location is identical with the time-frequency location of the demodulated reference signal.Specifically, enhancing reference is obtained based on demodulated reference signal
During signal, enhancing reference signal is demodulated reference signal, time-frequency location and demodulated reference signal in a Physical Resource Block
It is identical.
In a kind of implementation of the invention, step 102 includes：In first of downlink times interval
Gap and/or second time slot issue the enhancing reference signal.In order to reduce power consumption, can only first in a TTI
Time slot sends enhancing reference signal, and in order to lift the validity of terminal-pair enhancing reference signal detection, it is also possible in a TTI
In two time slots in all send enhancing reference signal.
In a kind of implementation of the invention, the quantity of the OFDM symbol that the enhancing reference signal is occupied is predetermined number
Amount.The OFDM symbol index that enhancing reference signal is occupied can be fixed, and in current TTI downlink transfer time span without
Close.When downlink transfer only occupies part OFDM symbol, reinforced partly reference signal can be caused to send, i.e., only part increases
Strong reference signal is sent.
In a kind of implementation of the invention, also include：According to the length of current downlink Transmission Time Interval, institute is determined
State the quantity of the OFDM symbol that enhancing reference signal is occupied.
That is, the OFDM symbol index that enhancing reference signal is occupied is variable, enhancing reference signal is occupied
The quantity of OFDM symbol depends on the physical length of current TTI.Therefore, when downlink transfer during terminal does not know current TTI
Between length when, it is necessary to it is possible enhancing reference signal time-domain position and frequency domain position carry out blind check.
In a kind of implementation of the invention, the frequency domain resource size of the enhancing reference signal is predefined size.Example
Such as, the frequency domain resource of enhancing reference signal is fixed as 8 or 16 Physical Resource Block.
In another implementation of the invention, can be according to the enhancing reference signal between a downlink times
Every the quantity and the density of each Physical Resource Block of the interior OFDM symbol for occupying, the frequency domain money of the enhancing reference signal is determined
Source, wherein, transmission density constant of the enhancing reference signal in a downlink times interval.
Specifically, in order to ensure in a TTI strengthen reference signal density, strengthen reference signal frequency domain resource it is big
Small is that can be changed according to change criterion, and the change criterion is to ensure that transmission density of the enhancing reference signal in a TTI is phase
With, that is to say, that to ensure the density constant of the enhancing reference signal of base station issue, so that terminal is detected.Therefore can root
The OFDM symbol number occupied in a TTI according to enhancing reference signal, the density in each Physical Resource Block etc. determine enhancing
The frequency domain resource of reference signal.For example, enhancing reference signal needs send in 4 OFDM symbols in a TTI, and only exist
Sent in one basic frequency domain resource.If certain TTI can only support that 2 OFDM, can for strengthening the transmission of reference signal
The frequency domain resource expansion of enhancing reference signal is twice to ensure that it is phase to strengthen transmission density of the reference signal in a TTI
With.
In one embodiment, needed for the frequency domain resource of the CCCH of coverage enhancement is more than enhancing reference signal
Frequency domain resource size when, enhancing reference signal can be sent out in whole frequency domain resources of the CCCH of coverage enhancement
Send.
In another embodiment, when the frequency domain resource of the CCCH of coverage enhancement is more than enhancing reference signal institute
During the frequency domain resource size for needing, enhancing reference signal can only be entered in the part frequency domain resource of the CCCH of coverage enhancement
Row sends.Wherein, the part frequency domain resource can be obtained based on an ad hoc rules, or obtained by signal deployment
's.
3rd, can also be according to channel state information reference signals (CSI-RS, Channel State Information-
Reference Signal), it is determined that the time-frequency location of enhancing reference signal.Here, CSI-RS is non-zero (NZP, non-zero
power).In one cell, 2 groups of NZP CSI-RS can be configured as enhancing reference signal.
For above-mentioned according to cell common reference signal, three kinds of sides of demodulated reference signal or channel state information reference signals
Formula come the enhancing reference signal that determines, when determining the frequency domain resource of the enhancing reference signal, including but not limited in the following manner：
1, according to system configuration information, for example, host system message block (MIB, Master Information Block) and be
System information SIB1, determines the frequency domain resource of the enhancing reference signal.Wherein, MIB and SIB1 are to be applied to unauthorized frequency range
Coverage enhancement scene under system information.
, 2, rule can be obtained according to predetermined, determine the frequency domain resource of the enhancing reference signal, wherein, it is described to make a reservation for obtain
Take the cell ID (cell ID, cell Identification) of rule cell where terminal, Transmission Time Interval
(transmission time interval) is indexed, the function of frequency domain resource size.For example, the rule can be expressed as below
Formula：
Here, RiI-th of expression enhancing reference signal frequency domain resource PRB pairs；Represent cell cell ID；
Represent downlink system bandwidth；M is the size for strengthening reference signal frequency domain resource, is expressed as the number of PRB pairs.
For above-mentioned according to cell common reference signal, three kinds of sides of demodulated reference signal or channel state information reference signals
Formula can both issue the enhancing reference signal come the enhancing reference signal for determining in full bandwidth, to increase enhancing reference
The issue success rate of signal, it is also possible to issue the enhancing reference signal in fractional bandwidth, fractional bandwidth is to remove in full bandwidth
The bandwidth gone after the Physical Resource Block of middle predetermined quantity, its implementation determines enhancing reference signal with above-mentioned based on CRS
Part narration it is consistent, will not be repeated here.
In a kind of implementation of the invention, also include：When the enhancing reference signal is sent, the enhancing is determined
Whether reference signal conflicts with common signal or user's signal specific；When it is determined that sending conflict, corresponding clash handle is performed
Mode.
Specifically, when sending enhancing reference signal, if the running time-frequency resource of enhancing reference signal is mutually rushed with other signals
Prominent, base station can puncture enhancing reference signal or other existing signals on (puncture) the few time-frequency position, i.e., not right
Enhancing reference signal or other signals are sent on the time-frequency location answered.Here, other existing signals include common signal and use
Family signal specific, wherein, common signal includes master sync signal/auxiliary synchronous signals, Physical Broadcast Channel and its coverage enhancement letter
Number, the master sync signal/auxiliary synchronous signals of MF systems and its coverage enhancement signal, Physical Downlink Control Channel (PDCCH,
Physical Downlink Control Channel), carry common data Physical Downlink Shared Channel (PDSCH,
Physical Downlink Shared Channel), one or more in the CCCH of coverage enhancement.
Here, the CCCH of coverage enhancement is to send some common control informations and/or user spy to terminal
Determine one group of public running time-frequency resource of control information, wherein, common control information includes shared Physical Downlink Control Channel, user
Signal specific is primarily referred to as carrying Physical Downlink Shared Channel, demodulated reference signal and the cell common reference of the specific data of user
Signal etc..
Various specific clash handle scenes and clash handle mode is provided below.
1, when reference signal is strengthened and common signal conflicts, base station does not send enhancing reference signal.
2, when reference signal is strengthened and common signal conflicts, for the PDSCH for carrying common data, base station does not send
PDSCH, can send the PDSCH that enhancing reference signal, i.e. base station puncture carrying common data in correspondence time-frequency location.And for
Other common signals beyond PDSCH, then puncture enhancing reference signal.
3, when the CCCH for strengthening reference signal and coverage enhancement conflicts, carrying public PDCCH
On the running time-frequency resource of (commonPDCCH, cPDCCH), base station does not send enhancing reference signal, and is sending other control information
Time-frequency location on, then puncture the signal of other control information.
4, when the CCCH for strengthening reference signal and coverage enhancement conflicts, carrying the time-frequency of public PDCCH
In resource, and carry the common control information of scheduling common data information (for example, the data message such as paging, system information)
On running time-frequency resource, base station does not send enhancing reference signal, and on the running time-frequency resource of other not common control information, then for sending out
Enhancing reference signal is sent, that is, punctures the signal of other not common control information.
5, when reference signal is strengthened and user's signal specific conflicts, base station sends enhancing reference signal, that is, puncture user
Signal specific.
6, when reference signal is strengthened and user's signal specific conflicts, base station does not send enhancing reference signal, that is, puncture increasing
Strong reference signal, user's signal specific is sent in collision position.
7, when demodulated reference signal, cell common reference signal in enhancing reference signal with user's signal specific etc. is mutually rushed
When prominent, base station does not send enhancing reference signal, that is, puncture enhancing reference signal.And for carrying the PDSCH of the specific data of user,
Base station sends enhancing reference signal, that is, puncture PDSCH.
8, when the demodulated reference signal in enhancing reference signal and user's signal specific, non-zero power cell common reference letter
When number mutually conflicting, base station does not send enhancing reference signal.And believe for the zero energy cell common reference in user's signal specific
Number and carry the specific data of user PDSCH, base station send enhancing reference signal, that is, puncture user's signal specific.
For the content of any one of above-described embodiment, there can also be implementations below：
Fig. 2 to Fig. 6 shows the resource map of the enhancing reference signal based on cell common reference signal.
In fig. 2, enhancing reference signal only first OFDM symbol (OFDM symbol 1) in one time slot and same
It is transmitted on third last symbol (OFDM symbol 5) in time slot, frequency domain position in a Physical Resource Block and is worked as
The CRS (Cell-specific Reference Signal, cell common reference signal) of preceding cell is identical.
In figure 3, two time slots of the enhancing reference signal in a TTI are all transmitted, in a Physical Resource Block
In frequency domain position it is identical with the cell common reference signal of current area.
In fig. 4, carried out in most latter two OFDM symbol in first time slot of the enhancing reference signal in a TTI
Send, the frequency domain position in a Physical Resource Block is identical with the cell common reference signal of current area.
In Figure 5, cell common reference is transmitted at second in first time slot of the enhancing reference signal in a TTI
It is transmitted in two OFDM before the OFDM symbol of signal, i.e., OFDM symbol 2 and 3 as depicted.Enhancing reference signal
Frequency domain position in a Physical Resource Block is identical with the cell common reference signal of current area.
In figure 6, enhancing reference signal is all transmitted in the two of TTI time slots.In each time slot, enhancing
Reference signal is carried out in two OFDM before second OFDM symbol of transmission cell common reference signal in each time slot
Send.The cell common reference signal phase of frequency domain position and current area of the enhancing reference signal in a Physical Resource Block
Together.
You need to add is that, Fig. 2 and Fig. 3 is not more than 2 situation suitable for the antenna port number of cell common reference signal,
Fig. 4, Fig. 5 and Fig. 6 are then the scene of { 1,2,4 } suitable for the antenna port number of cell common reference signal.
Base station can send enhancing reference signal according to the actual antennas port number of the cell common reference signal of system, or
The antenna port number that person base station is all based on cell common reference signal is 4 scene transmission enhancing reference signal.
In Fig. 2 to Fig. 6, in first time slot in a TTI, enhancing reference signal is possible to and main synchronous letter
Number/auxiliary synchronous signals, the resource-niche of the master sync signal/auxiliary synchronous signals of MF systems be equipped with conflict, and in this case, enhancing ginseng
Signal is examined not to be transmitted to avoid and master sync signal/auxiliary synchronous signals conflict in middle 6 Physical Resource Block.And second
Time slot is possible to that because descending transmission time is limited to enhancing reference signal cannot be sent, and in this case, does not then send
Enhancing reference signal.
Additionally, enhancing reference signal is possible to the master sync signal/auxiliary synchronization with PDCCH, enhanced PDCCH, MF system
Signal, the coverage enhancement of the Physical Broadcast Channel of MF systems have resource contention, and when there is a conflict, enhancing reference signal is in corresponding positions
Not sending signal is put, person relevant position is used to strengthen the transmission of reference signal, the channel that other conflict is done and is punctured.
Fig. 7 shows the resource map of the enhancing reference signal based on demodulated reference signal.
As shown in fig. 7, enhancing reference signal is based on the port (port) 7 and port 9 of demodulated reference signal, at first
It is transmitted in most latter two OFDM symbol of time slot.
Fig. 8 shows the block diagram of the base station of one embodiment of the present of invention.
As shown in figure 8, the base station 800 of one embodiment of the present of invention, including enhancing reference signal release unit 802,
Enhancing reference signal is issued in downlink transmission process, the channel of base station 800 is determined according to the enhancing reference signal for terminal
Occupancy situation.
In the above embodiment of the present invention, alternatively, also include：Joint release unit, issues basic reference signal, for
The terminal according to the basic reference signal and the enhancing reference signal joint-detection base station 800 whether busy channel
Downlink transfer is carried out, wherein, the basic reference signal includes cell common reference signal, demodulated reference signal and synchronization message
One or more in signal.
In the above embodiment of the present invention, alternatively, it is described enhancing reference signal release unit specifically for：In conveyer
The issue enhancing reference signal in first downlink times interval in meeting, so that the terminal determines downlink transfer
Original position.
In the above embodiment of the present invention, alternatively, it is described enhancing reference signal release unit specifically for：In conveyer
The issue enhancing reference signal in each downlink times interval in meeting.
In the above embodiment of the present invention, alternatively, also include：Pre- judging unit, at a downlink times interval
When interior issue has detectable signal, judge whether that coverage enhancement can be completed in one downlink times interval, wherein, when
Judged result, when judged result is no, strengthens with reference to letter when being, the enhancing reference signal not to be issued into the issue
Number the step of, for multiple downlink times interval in all issue the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：First determining unit, according to the cell common reference
Signal, determines the signal sequence and time-frequency location of the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：5th determining unit, the cell according to where the terminal
Cell ID, determine it is described enhancing reference signal time-frequency location.
In the above embodiment of the present invention, alternatively, the enhancing reference signal release unit is used for：By all antennas
The identical time-frequency location of port issues the enhancing reference signal.
In the above embodiment of the present invention, alternatively, the actual quantity of the antenna port of the enhancing reference signal is issued
Actual quantity with the antenna port for issuing the cell common reference signal is identical, and the enhancing reference signal issue is single
Unit is used for：The different enhancing reference signals are issued in different positions by different antennas.
In the above embodiment of the present invention, alternatively, also include：6th determining unit, according to the demodulated reference signal,
Determine the time-frequency location of the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：In a Physical Resource Block, the enhancing is with reference to letter
Number time-frequency location it is identical with the time-frequency location of the demodulated reference signal.
In the above embodiment of the present invention, alternatively, the enhancing reference signal release unit is used for：In a descending biography
First time slot of defeated time interval and/or second time slot issue the enhancing reference signal.
In the above embodiment of the present invention, alternatively, the quantity of the OFDM symbol that the enhancing reference signal is occupied is pre-
Fixed number amount.
In the above embodiment of the present invention, alternatively, also include：7th determining unit, according to current downlink transmission time
The length at interval, determines the quantity of the OFDM symbol that the enhancing reference signal is occupied.
In the above embodiment of the present invention, alternatively, the frequency domain resource size of the enhancing reference signal is predefined size.
In the above embodiment of the present invention, alternatively, also include：8th determining unit, according to the enhancing reference signal
The quantity and the density of each Physical Resource Block of the OFDM symbol occupied in a downlink times interval, determine the increasing
The frequency domain resource of strong reference signal, wherein, transmission density of the enhancing reference signal in a downlink times interval
It is constant.
In the above embodiment of the present invention, alternatively, also include：9th determining unit, according to the channel condition information
Reference signal, determines the time-frequency location of the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：Conflict determination unit, is sending the enhancing with reference to letter
Number when, determine it is described enhancing reference signal whether conflict with common signal or user's signal specific；Clash handle unit, when it is determined that
When sending conflict, corresponding clash handle mode is performed.
In the above embodiment of the present invention, alternatively, also include：Second determining unit, according to host system message block, it is determined that
The frequency domain resource of the enhancing reference signal.
In the above embodiment of the present invention, alternatively, also include：3rd determining unit, rule is obtained according to predetermined, it is determined that
The frequency domain resource of the enhancing reference signal, wherein, the predetermined letter for obtaining rule cell ID of cell where terminal
Number.
In the above embodiment of the present invention, alternatively, the time-frequency location of the enhancing reference signal is fixed.
In the above embodiment of the present invention, alternatively, the 4th determining unit, according to shared by a downlink times interval
According to OFDM symbol quantity, determine it is described enhancing reference signal time-frequency location.
In the above embodiment of the present invention, alternatively, the enhancing reference signal release unit is used for：Sent out in full bandwidth
Strengthen reference signal described in cloth.
In the above embodiment of the present invention, alternatively, the enhancing reference signal release unit is used for：In fractional bandwidth
Issue the enhancing reference signal, wherein, the fractional bandwidth be full bandwidth in remove centre predetermined quantity physical resource
Bandwidth after block.
Fig. 9 shows the flow chart of the downlink transfer detection method of an alternative embodiment of the invention.
As shown in figure 9, the downlink transfer detection method of an alternative embodiment of the invention, including：
Step 902, obtains the enhancing reference signal of base station issue.
Step 904, according to the enhancing reference signal, detects whether busy channel carries out downlink transfer for the base station.
For the technical problem of the reference signal easily decline of the base station issue in correlation technique, can be issued by base station and increased
Strong reference signal, the density of the enhancing reference signal is more than original reference signal in correlation technique, that is to say, that above technology
Reference signal density higher can be provided for terminal in scheme, that is, realize the coverage enhancement to reference signal so that terminal
The enhancing reference signal of base station issue is got more conveniently, to determine the channel occupancy situation of base station, so that eventually
End can be smoothed out the work such as channel-monitoring/detection and channel estimation according to the enhancing reference signal, and improve communication has
Effect property.
In the above embodiment of the present invention, alternatively, also include：Obtain the basic reference signal of the base station issue, institute
Stating basic reference signal includes one or more in cell common reference signal, demodulated reference signal and synchronization message signal；
Step 904 is specifically included：According to enhancing reference signal and the basic reference signal, whether base station accounts for described in joint-detection
Downlink transfer is carried out with channel.
Also issue strengthens reference signal on the basis of baseband signal is issued, and substantially increases the density of reference signal,
Terminal is more easily and effectively got effective reference signal to determine the channel occupancy situation of base station.
In the above embodiment of the present invention, alternatively, also include：Descending biography is carried out the base station busy channel is detected
In the case of defeated, determine it is described enhancing reference signal where downlink times at intervals of downlink transfer original position.
The issue enhancing reference signal in first downlink times interval in transmission opportunity, for the end
End determines the original position of downlink transfer.The transmission opportunity initiated for base station, terminal must judge this time descending biography
Defeated original position, also, in the transmission opportunity other downlink times interval in, enhancing reference signal is not sent.
Figure 10 shows the block diagram of the terminal of one embodiment of the present of invention.
As shown in Figure 10, the terminal 1000 of one embodiment of the present of invention, including：First acquisition unit 1002, obtains base
Stand issue enhancing reference signal；Downlink transfer detection unit 1004, according to the enhancing reference signal, detects that the base station is
No busy channel carries out downlink transfer.
In addition, not shown in Figure 10, terminal 1000 also includes second acquisition unit and original position determining unit.
Second acquisition unit is used to obtain the basic reference signal of the base station issue, and the basic reference signal includes small
One or more in area's public reference signal, demodulated reference signal and synchronization message signal.Then the downlink transfer detection is single
Unit 1004 specifically for：According to enhancing reference signal and the basic reference signal, whether base station accounts for described in joint-detection
Downlink transfer is carried out with channel.
Original position determining unit is used for detecting in the case that the base station busy channel carries out downlink transfer, it is determined that
The original position of downlink times where the enhancing reference signal at intervals of downlink transfer.
Figure 11 shows the block diagram of the terminal of an alternative embodiment of the invention.
As shown in figure 11, terminal 1100 includes：Processor 1104；With memory 1102, be stored with energy in memory 1102
Enough instructions performed by processor 1104, and processor 1104 is used to call the instruction of the storage of memory 1102, performs following behaviour
Make：
Obtain the enhancing reference signal of base station issue；According to enhancing reference signal, whether busy channel is carried out for detection base station
Downlink transfer.
Figure 12 shows the block diagram of the base station of an alternative embodiment of the invention.
As shown in figure 12, base station 1200 include emitter 1222, receiver 1221, memory 1223 and respectively with transmitting
The processor 1224 of machine 1222, receiver 1221 and memory 1223 connection, being stored with memory 1223 can be by processor
1224 instructions for performing, and processor 1224 is used to call the instruction of the storage of memory 1223, performs following operation：
Enhancing reference signal is issued in downlink transmission process, the letter of base station is determined according to enhancing reference signal for terminal
Road occupancy situation.
Technical scheme is described in detail above in association with accompanying drawing, by technical scheme, can be for eventually
End provides reference signal density higher, that is, realize the coverage enhancement to reference signal so that terminal is more conveniently
The enhancing reference signal of base station issue is got, to determine the channel occupancy situation of base station, so that terminal can be according to the increasing
Strong reference signal is smoothed out the work such as channel-monitoring/detection and channel estimation, is easy to terminal to be entered according to the enhancing reference signal
The effective downlink transfer detection of row, improves the validity of communication.
Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining " or " in response to detection ".Similarly, depending on linguistic context, phrase " if it is determined that " or " if detection
(condition or event of statement) " can be construed to " when it is determined that when " or " in response to determine " or " when the detection (condition of statement
Or event) when " or " in response to detection (condition or event of statement) ".
It should be noted that terminal involved in the embodiment of the present invention can include but is not limited to personal computer
(Personal Computer, PC), personal digital assistant (Personal Digital Assistant, PDA), wireless handheld
Equipment, panel computer (Tablet Computer), mobile phone, MP3 player, MP4 players etc..
In several embodiments provided by the present invention, it should be understood that disclosed system, apparatus and method, can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, for example, multiple units or group
Part can be combined or be desirably integrated into another system, or some features can be ignored, or not performed.It is another, it is shown
Or the coupling each other that discusses or direct-coupling or communication connection can be by some interfaces, device or unit it is indirect
Coupling is communicated to connect, and can be electrical, mechanical or other forms.
In addition, during each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit can both be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can store and be deposited in an embodied on computer readable
In storage media.Above-mentioned SFU software functional unit storage is in a storage medium, including some instructions are used to so that a computer
Device (can be personal computer, server, or network equipment etc.) or processor (Processor) perform the present invention each
The part steps of embodiment methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. it is various
Can be with the medium of store program codes.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (10)
1. a kind of downlink transfer detection method, it is characterised in that including：
Enhancing reference signal is issued in downlink transmission process, the letter of base station is determined according to the enhancing reference signal for terminal
Road occupancy situation.
2. downlink transfer detection method according to claim 1, it is characterised in that also include：
According to the cell common reference signal, the signal sequence and time-frequency location of the enhancing reference signal are determined.
3. downlink transfer detection method according to claim 1, it is characterised in that also include：
According to the demodulated reference signal, the time-frequency location of the enhancing reference signal is determined.
4. a kind of base station, it is characterised in that including：
Enhancing reference signal release unit, issues enhancing reference signal, so that terminal is according to the increasing in downlink transmission process
Strong reference signal determines the channel occupancy situation of base station.
5. base station according to claim 4, it is characterised in that also include：
First determining unit, according to the cell common reference signal, determine the enhancing reference signal signal sequence and when
Frequency position.
6. base station according to claim 4, it is characterised in that also include：
6th determining unit, according to the demodulated reference signal, determines the time-frequency location of the enhancing reference signal.
7. a kind of downlink transfer detection method, it is characterised in that including：
Obtain the enhancing reference signal of base station issue；
According to the enhancing reference signal, detect whether busy channel carries out downlink transfer for the base station.
8. a kind of terminal, it is characterised in that including：
First acquisition unit, obtains the enhancing reference signal of base station issue；
Downlink transfer detection unit, according to the enhancing reference signal, detects whether busy channel carries out descending biography for the base station
It is defeated.
9. a kind of terminal, it is characterised in that including：
Processor；With
Memory,
Being stored with the memory can be used to call the memory to deposit by the instruction of the computing device, and processor
The instruction of storage, performs following operation：
Obtain the enhancing reference signal of base station issue；
According to the enhancing reference signal, detect whether busy channel carries out downlink transfer for the base station.
10. a kind of base station, it is characterised in that
Including emitter, receiver, memory and the processor being connected with emitter, receiver and memory respectively,
Being stored with the memory can be used to call the memory to deposit by the instruction of the computing device, and processor
The instruction of storage, performs following operation：
Enhancing reference signal is issued in downlink transmission process, the letter of base station is determined according to the enhancing reference signal for terminal
Road occupancy situation.
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| CN201710194297.3A CN106789826B (en) | 2017-03-28 | 2017-03-28 | Downlink transmission detection method, base station and terminal |
| PCT/CN2018/080942 WO2018177332A1 (en) | 2017-03-28 | 2018-03-28 | Downlink transmission detection method, base station and terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710194297.3A CN106789826B (en) | 2017-03-28 | 2017-03-28 | Downlink transmission detection method, base station and terminal |
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| WO2018177332A1 (en) * | 2017-03-28 | 2018-10-04 | 北京佰才邦技术有限公司 | Downlink transmission detection method, base station and terminal |
| CN109151893A (en) * | 2017-06-16 | 2019-01-04 | 展讯通信（上海）有限公司 | Method for mapping resource and device, base station, the storage medium of Physical Broadcast Channel |
| WO2019061304A1 (en) * | 2017-09-29 | 2019-04-04 | 北京小米移动软件有限公司 | Reference signal transmission and reception method and device, base station and user equipment |
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| WO2018177332A1 (en) | 2018-10-04 |
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