CN109120388A - Reference signal configuration, method of reseptance, base station, terminal, computer readable storage medium - Google Patents
Reference signal configuration, method of reseptance, base station, terminal, computer readable storage medium Download PDFInfo
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- CN109120388A CN109120388A CN201710486698.6A CN201710486698A CN109120388A CN 109120388 A CN109120388 A CN 109120388A CN 201710486698 A CN201710486698 A CN 201710486698A CN 109120388 A CN109120388 A CN 109120388A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding 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
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
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Abstract
The present invention provides a kind of reference signal configuration, method of reseptance, base station, terminal, computer readable storage mediums, belong to wireless communication technology field.Reference signal configuration method includes: the configuration information that reference signal in control channel is determined according to the motion state and/or control channel type of terminal；Reference signal configuration message is sent to terminal, the configuration information of reference signal in control channel is carried in the reference signal configuration message, so that the terminal obtains reference signal according to the configuration information to carry out channel estimation.Reference signal receiving method includes: the reference signal configuration message for receiving base station and sending, and the configuration information of reference signal in control channel is carried in the reference signal configuration message；Reference signal is obtained according to the configuration information to carry out channel estimation.Technical solution of the present invention can reduce the reference signal expense of PDCCH under the premise of guaranteeing PDCCH robustness.
Description
Technical field
The present invention relates to wireless communication technology field, a kind of reference signal configuration, method of reseptance, base station, end are particularly related to
End, computer readable storage medium.
Background technique
In LTE (Long Term Evolution, long term evolution) system, the physical resource for sending Downlink Control Information exists
First 1,2 or 3 OFDMs can be occupied in 1 TTI (Transmit Time Interval, Transmission Time Interval) in time domain
(system bandwidth is (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) symbol
When 1.4MHz, 4 symbols can be occupied), specific symbol numbers pass through PCFICH (Physical Control Format
Indicator Channel, Physical Control Format Indicator Channel) instruction.LTE terminal utilizes the CRS (Cell- of full bandwidth
Specific Reference Signal, cell specific reference signal) complete control channel estimation and data demodulation.
In NR (New Radio, new wireless technology) standardisation process, examined from the angle of energy saving of system and forward compatibility
Consider, it is desirable to the transmission of signal (always-on signal), such as CRS are resided in reduction system.A kind of possible design scheme
It is that reference signal is only sent in the REG (element of resource group) for having data to send for channel estimation and data demodulation.In order to drop
The expense of low reference signal, the design method advanced optimized are preposition reference signal (front-loaded RS), i.e., with reference to letter
Number (RS) is placed only in the 1st OFDM symbol in control channel, as shown in Figure 1.Meanwhile for transmitting user service data
DSCH Downlink Shared Channel (Physical Downlink Sharing Channel, PDSCH) equally also support preposition reference signal
Design, as shown in Figure 2.
Although the design method of preposition reference signal can reduce the expense of reference signal, work as control channel or control
When resource collection (Control Resource SET, CORSET) occupies 3 or more OFDM symbols, preposition reference is relied only on
Signal can reduce the channel estimating performance of OFDM symbol more rearward.Especially when terminal is in high-speed moving state, OFDM symbol
Temporal correlation between number dies down, and channel estimating performance deterioration becomes apparent, and will be greatly reduced the robustness of down control channel.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of reference signal configuration method, method of reseptance, base station, terminal,
Computer readable storage medium can reduce the reference signal expense of PDCCH under the premise of guaranteeing PDCCH robustness.
In order to solve the above technical problems, the embodiment of the present invention offer technical solution is as follows:
On the one hand, a kind of reference signal configuration method is provided, applied to the base station in cordless communication network, the method packet
It includes:
The configuration information of reference signal in control channel is determined according to the motion state of terminal and/or control channel type；
Reference signal configuration message is sent to terminal, carries in control channel and refers in the reference signal configuration message
The configuration information of signal, so that the terminal obtains reference signal according to the configuration information to carry out channel estimation.
Further, the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplexing of control resource collection
Reference signal is placed in OFDM symbol and in 3rd OFDM symbol.
Further, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information includes:
It include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value,
It controls in the 1st OFDM symbol of resource collection and is placed with reference signal in the 3rd OFDM symbol.
Further, reference is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
When signal, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information further include:
It is less than default second threshold in the movement speed of terminal, and the polymerization grade of physical downlink control channel PDCCH is small
When default third threshold value, reference signal, the second threshold only are placed in the 1st OFDM symbol of control resource collection
Less than the first threshold；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of PDCCH and the shared letter of physical down
When the reference signal of road PDSCH has the quasi- QCLed relationship with positioning, only put in the 1st OFDM symbol of control resource collection
It is equipped with reference signal；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of the reference signal of PDCCH and PDSCH
When without QCLed relationship, ginseng is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
Examine signal.
Further, the method also includes:
By high-level signaling notify terminal PDCCH reference signal whether with the reference signal of PDSCH there are the passes QCLed
System.
The embodiment of the invention also provides a kind of reference signal receiving method, applied to the terminal in cordless communication network,
The described method includes:
The reference signal configuration message that base station is sent is received, is carried in control channel in the reference signal configuration message
The configuration information of reference signal；
Reference signal is obtained according to the configuration information to carry out channel estimation.
Further, the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplexing of control resource collection
Reference signal is placed in OFDM symbol and in 3rd OFDM symbol.
Further, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information includes:
It include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value,
It controls in the 1st OFDM symbol of resource collection and is placed with reference signal in the 3rd OFDM symbol.
Further, reference is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
When signal, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information further include:
It is less than default second threshold in the movement speed of terminal, and the polymerization grade of physical downlink control channel PDCCH is small
When default third threshold value, reference signal, the second threshold only are placed in the 1st OFDM symbol of control resource collection
Less than the first threshold；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of PDCCH and the shared letter of physical down
When the reference signal of road PDSCH has the quasi- QCLed relationship with positioning, only put in the 1st OFDM symbol of control resource collection
It is equipped with reference signal；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of the reference signal of PDCCH and PDSCH
When without QCLed relationship, ginseng is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
Examine signal.
Further, the method also includes:
Receive the high-level signaling that base station is sent, the reference signal of high-level signaling instruction PDCCH whether the ginseng with PDSCH
Examining signal, there are QCLed relationships.
The embodiment of the invention also provides a kind of base station, including processor and transceiver,
The processor is used to be determined according to the motion state and/or control channel type of terminal in control channel with reference to letter
Number configuration information；
The transceiver is used to send reference signal configuration message to terminal, carries in the reference signal configuration message
The configuration information of reference signal in control channel, so that the terminal obtains reference signal according to the configuration information to carry out letter
Road estimation.
Further, the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplexing of control resource collection
Reference signal is placed in OFDM symbol and in 3rd OFDM symbol.
Further, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information includes:
It include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value,
It controls in the 1st OFDM symbol of resource collection and is placed with reference signal in the 3rd OFDM symbol.
Further, reference is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
When signal, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information further include:
It is less than default second threshold in the movement speed of terminal, and the polymerization grade of physical downlink control channel PDCCH is small
When default third threshold value, reference signal, the second threshold only are placed in the 1st OFDM symbol of control resource collection
Less than the first threshold；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of PDCCH and the shared letter of physical down
When the reference signal of road PDSCH has the quasi- QCLed relationship with positioning, only put in the 1st OFDM symbol of control resource collection
It is equipped with reference signal；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of the reference signal of PDCCH and PDSCH
When without QCLed relationship, ginseng is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
Examine signal.
Further, the transceiver is also used to:
By high-level signaling notify terminal PDCCH reference signal whether with the reference signal of PDSCH there are the passes QCLed
System.
The embodiment of the invention also provides a kind of terminal, including processor and transceiver,
The transceiver is used to receive the reference signal configuration message of base station transmission, takes in the reference signal configuration message
Configuration information with reference signal in control channel；
The processor is used to obtain reference signal according to the configuration information to carry out channel estimation.
Further, the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplexing of control resource collection
Reference signal is placed in OFDM symbol and in 3rd OFDM symbol.
Further, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information includes:
It include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value,
It controls in the 1st OFDM symbol of resource collection and is placed with reference signal in the 3rd OFDM symbol.
Further, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information further include:
It is less than default second threshold in the movement speed of terminal, and the polymerization grade of physical downlink control channel PDCCH is small
When default third threshold value, reference signal, the second threshold only are placed in the 1st OFDM symbol of control resource collection
Less than the first threshold；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of PDCCH and the shared letter of physical down
When the reference signal of road PDSCH has the quasi- QCLed relationship with positioning, only put in the 1st OFDM symbol of control resource collection
It is equipped with reference signal；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of the reference signal of PDCCH and PDSCH
When without QCLed relationship, ginseng is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
Examine signal.
Further, the transceiver is also used to:
Receive the high-level signaling that base station is sent, the reference signal of high-level signaling instruction PDCCH whether the ginseng with PDSCH
Examining signal, there are QCLed relationships.
The embodiment of the invention also provides a kind of base station, including memory, processor and it is stored on the memory simultaneously
The computer program that can be run on the processor；The processor is realized as described above when executing described program with reference to letter
Number configuration method.
The embodiment of the invention also provides a kind of terminal, including memory, processor and it is stored on the memory simultaneously
The computer program that can be run on the processor；The processor is realized as described above when executing described program with reference to letter
Number method of reseptance.
The embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer program, the journey
It is realized such as when realizing the step in reference signal configuration method as described above when sequence is executed by processor or being executed by processor
Step in the upper reference signal receiving method.
The embodiment of the present invention has the advantages that
In above scheme, base station determines whether configuration auxiliary ginseng according to the motion state and/or control channel type of terminal
Signal is examined, the flexibility of reference signal configuration is increased, can further be promoted under the premise of not promoting reference signal expense
The robustness of PDCCH.
Detailed description of the invention
Fig. 1 and Fig. 2 is that prior art reference signal is placed only on the signal in the 1st OFDM symbol in control channel
Figure；
Fig. 3 is the flow diagram of reference signal configuration of embodiment of the present invention method；
Fig. 4 is the flow diagram of reference signal receiving method of the embodiment of the present invention；
Fig. 5 is the structural block diagram of base station of the embodiment of the present invention；
Fig. 6 is the structural block diagram of the terminal of that embodiment of the invention；
Fig. 7 is the reference signal that the embodiment of the present invention is located in the 3rd OFDM symbol and is located in the 1st OFDM symbol
The schematic diagram that offset of the reference signal on frequency domain is 0；
Fig. 8 is the reference signal that the embodiment of the present invention is located in the 3rd OFDM symbol and is located in the 1st OFDM symbol
The schematic diagram that offset of the reference signal on frequency domain is 1；
Fig. 9 is the reference signal that the embodiment of the present invention is located in the 3rd OFDM symbol and is located in the 1st OFDM symbol
The schematic diagram that offset of the reference signal on frequency domain is 4；
The reference signal of reference signal and PDSCH that Figure 10 is PDCCH of the embodiment of the present invention does not have showing for QCLed relationship
It is intended to；
The reference signal of reference signal and PDSCH that Figure 11 is PDCCH of the embodiment of the present invention has the signal of QCLed relationship
Figure.
Specific embodiment
To keep the embodiment of the present invention technical problems to be solved, technical solution and advantage clearer, below in conjunction with
Drawings and the specific embodiments are described in detail.
The embodiment of the present invention provides a kind of reference signal configuration method, method of reseptance, base station, terminal, computer-readable
Storage medium can reduce the reference signal expense of PDCCH under the premise of guaranteeing PDCCH robustness.
The embodiment of the present invention provides a kind of reference signal configuration method, applied to the base station in cordless communication network, such as Fig. 3
It is shown, which comprises
Step 101: matching for reference signal in control channel is determined according to the motion state of terminal and/or control channel type
Confidence breath；
Step 102: sending reference signal configuration message to terminal, control letter is carried in the reference signal configuration message
The configuration information of reference signal in road is estimated so that the terminal obtains reference signal according to the configuration information with carrying out channel
Meter.
In the present embodiment, base station determines whether configuration auxiliary ginseng according to the motion state and/or control channel type of terminal
Signal is examined, the flexibility of reference signal configuration is increased, can further be promoted under the premise of not promoting reference signal expense
The robustness of PDCCH.
In one specific embodiment, the configuration information includes:
When controlling resource collection (CORESET) includes public search space (Common Search Space, CSS),
It controls on the 1st OFDM (orthogonal frequency division multiplexing) symbol of resource collection and is placed with reference signal in the 3rd OFDM symbol.
For the CORESET comprising public search space, base station, which is defaulted, does not use preposition reference signal configuration, i.e. and the in CORESET the 1st
Reference signal is placed on a OFDM symbol and the 3rd symbol OFDM.
Further, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.Reference signal in the 3rd OFDM symbol can in the 1st OFDM symbol
Reference signal shifted by delta RE (resource particle) on frequency domain.Specific Δ value can be cell ID function；Other possible parameters
It also include: CORESET frequency domain position, system bandwidth, time-gap number etc..
In another specific embodiment, the configuration information includes:
It include user search space (UE-specific Search Space, USS) in control resource collection, and terminal
When movement speed is greater than preset first threshold value, in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
It is placed with reference signal.
For only including the CORESET of user search space, base station can pass through the 3rd OFDM symbol of semi-static flexible configuration
Number whether reference signal is placed, specifically included:
A, base station default uses a kind of reference signal configuration, preposition or non-preposition, and informs terminal by high-level signaling；
B, default when base station and use preposition reference signal, i.e., only when the 1st OFDM symbol places reference signal, the 3rd
The condition of OFDM symbol placement reference signal are as follows: base station judges the terminal for high speed mobile terminal；
C, when base station is defaulted using non-preposition reference signal, i.e., reference is placed on the 1st and the 3rd OFDM symbol
When signal, the 3rd OFDM symbol cancels the condition for placing reference signal are as follows: base station judge terminal for low speed mobile terminal and
The polymerization grade of PDCCH is lower, for example the polymerization grade of PDCCH is 1 or 2.
Further, reference is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
When signal, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.Reference signal in the 3rd OFDM symbol can in the 1st OFDM symbol
Reference signal shifted by delta RE on frequency domain.Specific Δ value can be the function of cell ID or UE ID；Other parameters may also
It include: CORESET frequency domain position, system bandwidth, time-gap number etc..
In another specific embodiment, the configuration information further include:
It include user search space in control resource collection, the movement speed of terminal is less than default second threshold, and physics
When the polymerization grade of down control channel PDCCH is less than default third threshold value, in the 1st OFDM symbol of control resource collection
It is placed with reference signal, the second threshold is less than the first threshold；Or
There is QCLed (quasi in the reference signal of PDCCH and the reference signal of PDSCH (Physical Downlink Shared Channel)
It is co-located, quasi- with positioning) relationship when, be placed with reference signal in the 1st OFDM symbol of control resource collection；Or
When the reference signal of PDCCH and the reference signal of PDSCH do not have QCLed relationship, in control resource collection
Reference signal is placed in 1st OFDM symbol and in 3rd OFDM symbol.If the reference signal of PDCCH and PDSCH's
Reference signal does not have QCLed relationship, and the reference signal that terminal is based only on PDCCH carries out channel estimation；If the reference of PDCCH
The reference signal of signal and PDSCH have QCLed relationship, and terminal can be estimated using the channel of the reference signal auxiliary PDCCH of PDSCH
Meter.
Further, the method also includes:
By high-level signaling notify terminal PDCCH reference signal whether with the reference signal of PDSCH there are the passes QCLed
System.
The embodiment of the invention also provides a kind of reference signal receiving method, applied to the terminal in cordless communication network,
As shown in Figure 4, which comprises
Step 201: receiving the reference signal configuration message that base station is sent, carry control in the reference signal configuration message
The configuration information of reference signal in channel processed；
Step 202: reference signal is obtained to carry out channel estimation according to the configuration information.
In the present embodiment, base station determines whether configuration auxiliary ginseng according to the motion state and/or control channel type of terminal
Signal is examined, the flexibility of reference signal configuration is increased, can further be promoted under the premise of not promoting reference signal expense
The robustness of PDCCH.
In one specific embodiment, the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplexing of control resource collection
Reference signal is placed in OFDM symbol and in 3rd OFDM symbol.
Further, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
In another specific embodiment, the configuration information includes:
It include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value,
It controls in the 1st OFDM symbol of resource collection and is placed with reference signal in the 3rd OFDM symbol.
Further, reference is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
When signal, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
In another specific embodiment, the configuration information further include:
It include user search space in control resource collection, the movement speed of terminal is less than default second threshold, and physics
When the polymerization grade of down control channel PDCCH is less than default third threshold value, in the 1st OFDM symbol of control resource collection
It is placed with reference signal, the second threshold is less than the first threshold；Or
When the reference signal of PDCCH and the reference signal of PDSCH have QCLed relationship, the 1st of control resource collection the
Reference signal is placed in a OFDM symbol；Or
When the reference signal of PDCCH and the reference signal of PDSCH do not have QCLed relationship, in control resource collection
Reference signal is placed in 1st OFDM symbol and in 3rd OFDM symbol.
Further, the method also includes:
Receive the high-level signaling that base station is sent, the reference signal of high-level signaling instruction PDCCH whether the ginseng with PDSCH
Examining signal, there are QCLed relationships.
With reference to the accompanying drawing and specific embodiment is to the reference signal configuration method of the embodiment of the present invention and with reference to letter
Number method of reseptance describes in detail, wherein embodiment parameter selection, resource distribution mode, reference signal configuration etc. are only
Description technical solution of the present invention selects other parameters, resource allocation, reference signal configuration not to influence technical side of the invention
Case uses.
Embodiment one:
1, base station is configured by the CORESET running time-frequency resource that signaled terminal includes public search space, possible reality
Applying example includes but is not limited to:
A, in initial access process, terminal reading Physical Broadcast Channel (Physical Broadcast Channel,
PBCH MIB (management information bank) information in), knows the CORESET running time-frequency resource information comprising public search space；
B, it is in the terminal of RRC (wireless heterogeneous networks) connected state, it includes that common search is empty that base station, which configures some CORESET,
Between, and pass through the time-frequency configuration information of the RRC signaling informing terminal CORESET；
C, to the CORESET comprising public search space for having passed through signal deployment, base station passes through grouping common control channel
The update of terminal CORESET running time-frequency resource is informed in road (Group Common PDCCH, GC-PDCCH), and base station passes through GC-PDCCH
In DCI (Downlink Control Information) know updated CORESET running time-frequency resource information.
2, when occupying 3 OFDM symbols in the CORESET time domain comprising public search space, base station is defaulted at the 1st
Reference signal is placed in OFDM symbol and the 3rd OFDM symbol, reference signal configuration is not necessarily to through signaled terminal, such as Fig. 7
Shown, the reference signal in the 3rd OFDM symbol and the reference signal in the 1st OFDM symbol are inclined on frequency domain
Shifting amount can be 0；As shown in figure 8, the reference signal being located in the 3rd OFDM symbol and the ginseng being located in the 1st OFDM symbol
Examining offset of the signal on frequency domain can be 1；As shown in figure 9, the reference signal being located in the 3rd OFDM symbol be located at the
Offset of the reference signal on frequency domain in 1 OFDM symbol can be 4.
Embodiment two:
1, base station informs that terminal includes the time-frequency configuration information of the CORESET of its user search space by RRC signaling, with
And default is using the configuration information of preposition reference signal.
2, when occupying 3 OFDM symbols in the CORESET time domain comprising the end user searches space:
A, base station determines that terminal be in high-speed moving state, and specifically, the movement speed that can be terminal, which is greater than, presets the
When one threshold value, judge that terminal is in high-speed moving state；
B, as shown in figs. 7 to 9 (on frequency domain only by taking 1 PRB (Physical Resource Block) as an example), base station in CORESET the 3rd
Supplementary reference signal (RS) is configured in a OFDM symbol, the relatively preposition reference signal offset Δ of the frequency domain position of supplementary reference signal
A RE, as shown in fig. 7, the reference signal being located in the 3rd OFDM symbol exists with the reference signal being located in the 1st OFDM symbol
Offset on frequency domain can be 0；As shown in figure 8, the reference signal being located in the 3rd OFDM symbol be located at the 1st OFDM
Offset of the reference signal on frequency domain on symbol can be 1；As shown in figure 9, the reference letter being located in the 3rd OFDM symbol
It number can be 4 with the offset of the reference signal that is located in the 1st OFDM symbol on frequency domain.The value of Δ be by cell ID,
The parameters recessiveness such as Termination ID, CORESET frequency domain position, system bandwidth, time-gap number are derived；
C, base station informs that the configured supplementary reference signal of terminal configures by RRC signaling；
3, base station judges that the PDCCH reference signal of terminal and the PDSCH reference signal of frequency domain same position do not have the pass QCLed
System.
4, terminal carries out channel estimation according to the reference signal of PDCCH, and demodulates to control channel.
Embodiment three:
1, base station informs that terminal includes the time-frequency configuration information of the CORESET of its user search space by RRC signaling, with
And default is using the configuration information of preposition reference signal.
2, when occupying 3 OFDM symbols in the CORESET time domain comprising the end user searches space:
A, base station determines that terminal be in high-speed moving state, and specifically, the movement speed that can be terminal, which is greater than, presets the
When one threshold value, judge that terminal is in high-speed moving state；
B, as shown in Figure 10 (on frequency domain only by taking 1 PRB as an example), base station configures in the 3rd OFDM symbol of CORESET
Supplementary reference signal, the relatively preposition reference signal offset Δ RE of the frequency domain position of supplementary reference signal.The value of Δ is by small
The parameters recessiveness such as area ID, Termination ID, CORESET frequency domain position, system bandwidth, time-gap number are derived；In Figure 10, Δ 1；
C, the configured supplementary reference signal of terminal is informed by RRC signaling in base station；
3, base station judges that the reference signal of the reference signal of the PDCCH11 of terminal and the PDSCH12 of frequency domain same position have
There is QCLed relationship；
4, terminal, the PDSCH12 reference of PDCCH11 reference signal and frequency domain same position are informed by RRC signaling in base station
Signal has QCLed relationship；
5, terminal carries out channel estimation according to the reference signal of PDCCH11 and the reference signal of PDSCH12, and believes control
Road is demodulated.
Example IV:
1, base station informs that terminal includes the time-frequency configuration information of the CORESET of its user search space by RRC signaling, with
And default does not use the configuration information of preposition reference signal.
2, when occupying 3 OFDM symbols in the CORESET time domain comprising the end user searches space:
A, base station determines that user be in low mobility state, and specifically, the movement speed that can be terminal, which is less than, presets the
When two threshold values, judge that terminal is in low mobility state；
B, the downlink channel quality information that base station is fed back by terminal or the uplink information sent by detection terminal, sentence
It is good to determine downlink channel of terminal quality；
C, base station judges that the PDCCH11 reference signal of terminal and the PDSCH12 reference signal of frequency domain same position have QCLed
Relationship, as shown in figure 11；
D, base station, which is cancelled, configures reference signal in the 3rd OFDM symbol of CORESET；
E, base station informs that terminal has cancelled configuration supplementary reference signal by RRC signaling；
F, base station informs the ginseng of the reference signal of terminal PDCCH11 and the PDSCH12 of frequency domain same position by RRC signaling
Examining signal, there are QCLed relationships；
3, terminal carries out channel estimation according to the reference signal of PDCCH11 and the reference signal of PDSCH12, and believes control
Road is demodulated.
The embodiment of the invention also provides a kind of base stations, as shown in figure 5, including processor 31 and transceiver 32,
The processor 31 is for determining in control channel and referring to according to the motion state and/or control channel type of terminal
The configuration information of signal；
The transceiver 32 is used to send reference signal configuration message to terminal, carries in the reference signal configuration message
There is the configuration information of reference signal in control channel, so that the terminal obtains reference signal according to the configuration information to carry out
Channel estimation.
Further, the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplexing of control resource collection
Reference signal is placed in OFDM symbol and in 3rd OFDM symbol.
Further, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information includes:
It include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value,
It controls in the 1st OFDM symbol of resource collection and is placed with reference signal in the 3rd OFDM symbol.
Further, reference is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
When signal, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information further include:
It is less than default second threshold in the movement speed of terminal, and the polymerization grade of physical downlink control channel PDCCH is small
When default third threshold value, reference signal, the second threshold only are placed in the 1st OFDM symbol of control resource collection
Less than the first threshold；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of PDCCH and the shared letter of physical down
When the reference signal of road PDSCH has the quasi- QCLed relationship with positioning, only put in the 1st OFDM symbol of control resource collection
It is equipped with reference signal；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of the reference signal of PDCCH and PDSCH
When without QCLed relationship, ginseng is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
Examine signal.
Further, the transceiver 32 is also used to:
By high-level signaling notify terminal PDCCH reference signal whether with the reference signal of PDSCH there are the passes QCLed
System.
The embodiment of the invention also provides a kind of terminals, as shown in fig. 6, including processor 41 and transceiver 42,
The transceiver 42 is used to receive the reference signal configuration message of base station transmission, in the reference signal configuration message
Carry the configuration information of reference signal in control channel；
The processor 41 is used to obtain reference signal according to the configuration information to carry out channel estimation.
Further, the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplexing of control resource collection
Reference signal is placed in OFDM symbol and in 3rd OFDM symbol.
Further, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information includes:
It include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value,
It controls in the 1st OFDM symbol of resource collection and is placed with reference signal in the 3rd OFDM symbol.
Further, the configuration information further include:
Reference signal in the 3rd OFDM symbol is with the reference signal in the 1st OFDM symbol on frequency domain
Offset or offset calculation.
Further, the configuration information further include:
It is less than default second threshold in the movement speed of terminal, and the polymerization grade of physical downlink control channel PDCCH is small
When default third threshold value, reference signal, the second threshold only are placed in the 1st OFDM symbol of control resource collection
Less than the first threshold；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of PDCCH and the shared letter of physical down
When the reference signal of road PDSCH has the quasi- QCLed relationship with positioning, only put in the 1st OFDM symbol of control resource collection
It is equipped with reference signal；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal of the reference signal of PDCCH and PDSCH
When without QCLed relationship, ginseng is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol
Examine signal.
Further, the transceiver 42 is also used to:
Receive the high-level signaling that base station is sent, the reference signal of high-level signaling instruction PDCCH whether the ginseng with PDSCH
Examining signal, there are QCLed relationships.
The embodiment of the invention also provides a kind of base station, including memory, processor and it is stored on the memory simultaneously
The computer program that can be run on the processor；The processor is realized as described above when executing described program with reference to letter
Number configuration method.
The embodiment of the invention also provides a kind of terminal, including memory, processor and it is stored on the memory simultaneously
The computer program that can be run on the processor；The processor is realized as described above when executing described program with reference to letter
Number method of reseptance.
The embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer program, the journey
The step in reference signal configuration method as described above is realized when sequence is executed by processor.
The embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer program, the journey
The step in reference signal receiving method as described above is realized when sequence is executed by processor.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (31)
1. a kind of reference signal configuration method, which is characterized in that applied to the base station in cordless communication network, the method packet
It includes:
The configuration information of reference signal in control channel is determined according to the motion state of terminal and/or control channel type；
Reference signal configuration message is sent to terminal, carries reference signal in control channel in the reference signal configuration message
Configuration information, so as to the terminal according to the configuration information obtain reference signal to carry out channel estimation.
2. reference signal configuration method according to claim 1, which is characterized in that the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplex OFDM symbol of control resource collection
Reference signal is placed on number and in the 3rd OFDM symbol.
3. reference signal configuration method according to claim 2, which is characterized in that the configuration information further include:
Reference signal in the 3rd OFDM symbol and the reference signal in the 1st OFDM symbol are inclined on frequency domain
The calculation of shifting amount or offset.
4. reference signal configuration method according to claim 1, which is characterized in that the configuration information includes:
Include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value, is controlling
Reference signal is placed in 1st OFDM symbol of resource collection and in 3rd OFDM symbol.
5. reference signal configuration method according to claim 4, which is characterized in that at the 1st of control resource collection
When being placed with reference signal in OFDM symbol and in the 3rd OFDM symbol, the configuration information further include:
Reference signal in the 3rd OFDM symbol and the reference signal in the 1st OFDM symbol are inclined on frequency domain
The calculation of shifting amount or offset.
6. reference signal configuration method according to claim 4, which is characterized in that the configuration information further include:
It is less than default second threshold in the movement speed of terminal, and the polymerization grade of physical downlink control channel PDCCH is less than in advance
If when third threshold value, being only placed with reference signal in the 1st OFDM symbol of control resource collection, the second threshold is less than
The first threshold；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal and Physical Downlink Shared Channel of PDCCH
When the reference signal of PDSCH has the quasi- QCLed relationship with positioning, only placed in the 1st OFDM symbol of control resource collection
There is reference signal；Or
It is less than default second threshold in the movement speed of terminal, and does not have in the reference signal of PDCCH and the reference signal of PDSCH
When having QCLed relationship, it is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol with reference to letter
Number.
7. reference signal configuration method according to claim 6, which is characterized in that the method also includes:
By high-level signaling notify terminal PDCCH reference signal whether with the reference signal of PDSCH there are QCLed relationships.
8. a kind of reference signal receiving method, which is characterized in that applied to the terminal in cordless communication network, the method packet
It includes:
The reference signal configuration message that base station is sent is received, carries in control channel and refers in the reference signal configuration message
The configuration information of signal；
Reference signal is obtained according to the configuration information to carry out channel estimation.
9. reference signal receiving method according to claim 8, which is characterized in that the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplex OFDM symbol of control resource collection
Reference signal is placed on number and in the 3rd OFDM symbol.
10. reference signal receiving method according to claim 9, which is characterized in that the configuration information further include:
Reference signal in the 3rd OFDM symbol and the reference signal in the 1st OFDM symbol are inclined on frequency domain
The calculation of shifting amount or offset.
11. reference signal receiving method according to claim 8, which is characterized in that the configuration information includes:
Include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value, is controlling
Reference signal is placed in 1st OFDM symbol of resource collection and in 3rd OFDM symbol.
12. reference signal receiving method according to claim 11, which is characterized in that the configuration information further include:
Reference signal in the 3rd OFDM symbol and the reference signal in the 1st OFDM symbol are inclined on frequency domain
The calculation of shifting amount or offset.
13. reference signal receiving method according to claim 11, which is characterized in that the configuration information further include:
It is less than default second threshold in the movement speed of terminal, and the polymerization grade of physical downlink control channel PDCCH is less than in advance
If when third threshold value, being only placed with reference signal in the 1st OFDM symbol of control resource collection, the second threshold is less than
The first threshold；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal and Physical Downlink Shared Channel of PDCCH
When the reference signal of PDSCH has the quasi- QCLed relationship with positioning, only placed in the 1st OFDM symbol of control resource collection
There is reference signal；Or
It is less than default second threshold in the movement speed of terminal, and does not have in the reference signal of PDCCH and the reference signal of PDSCH
When having QCLed relationship, it is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol with reference to letter
Number.
14. reference signal receiving method according to claim 13, which is characterized in that the method also includes:
Receive the high-level signaling that base station is sent, the reference signal of high-level signaling instruction PDCCH whether reference the letter with PDSCH
Number there are QCLed relationships.
15. a kind of base station, which is characterized in that including processor and transceiver,
The processor is used to determine reference signal in control channel according to the motion state and/or control channel type of terminal
Configuration information；
The transceiver is used to send reference signal configuration message to terminal, carries control in the reference signal configuration message
The configuration information of reference signal in channel is estimated so that the terminal obtains reference signal according to the configuration information with carrying out channel
Meter.
16. base station according to claim 15, which is characterized in that the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplex OFDM symbol of control resource collection
Reference signal is placed on number and in the 3rd OFDM symbol.
17. base station according to claim 16, which is characterized in that the configuration information further include:
Reference signal in the 3rd OFDM symbol and the reference signal in the 1st OFDM symbol are inclined on frequency domain
The calculation of shifting amount or offset.
18. base station according to claim 15, which is characterized in that the configuration information includes:
Include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value, is controlling
Reference signal is placed in 1st OFDM symbol of resource collection and in 3rd OFDM symbol.
19. base station according to claim 18, which is characterized in that control resource collection the 1st OFDM symbol on and
When being placed with reference signal in the 3rd OFDM symbol, the configuration information further include:
Reference signal in the 3rd OFDM symbol and the reference signal in the 1st OFDM symbol are inclined on frequency domain
The calculation of shifting amount or offset.
20. base station according to claim 18, which is characterized in that the configuration information further include:
It is less than default second threshold in the movement speed of terminal, and the polymerization grade of physical downlink control channel PDCCH is less than in advance
If when third threshold value, being only placed with reference signal in the 1st OFDM symbol of control resource collection, the second threshold is less than
The first threshold；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal and Physical Downlink Shared Channel of PDCCH
When the reference signal of PDSCH has the quasi- QCLed relationship with positioning, only placed in the 1st OFDM symbol of control resource collection
There is reference signal；Or
It is less than default second threshold in the movement speed of terminal, and does not have in the reference signal of PDCCH and the reference signal of PDSCH
When having QCLed relationship, it is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol with reference to letter
Number.
21. base station according to claim 20, which is characterized in that the transceiver is also used to:
By high-level signaling notify terminal PDCCH reference signal whether with the reference signal of PDSCH there are QCLed relationships.
22. a kind of terminal, which is characterized in that including processor and transceiver,
The transceiver is used to receive the reference signal configuration message of base station transmission, carries in the reference signal configuration message
The configuration information of reference signal in control channel；
The processor is used to obtain reference signal according to the configuration information to carry out channel estimation.
23. terminal according to claim 22, which is characterized in that the configuration information includes:
When controlling resource collection includes public search space, in the 1st orthogonal frequency division multiplex OFDM symbol of control resource collection
Reference signal is placed on number and in the 3rd OFDM symbol.
24. terminal according to claim 23, which is characterized in that the configuration information further include:
Reference signal in the 3rd OFDM symbol and the reference signal in the 1st OFDM symbol are inclined on frequency domain
The calculation of shifting amount or offset.
25. terminal according to claim 22, which is characterized in that the configuration information includes:
Include user search space in control resource collection, and when the movement speed of terminal is greater than preset first threshold value, is controlling
Reference signal is placed in 1st OFDM symbol of resource collection and in 3rd OFDM symbol.
26. terminal according to claim 25, which is characterized in that the configuration information further include:
Reference signal in the 3rd OFDM symbol and the reference signal in the 1st OFDM symbol are inclined on frequency domain
The calculation of shifting amount or offset.
27. terminal according to claim 25, which is characterized in that the configuration information further include:
It is less than default second threshold in the movement speed of terminal, and the polymerization grade of physical downlink control channel PDCCH is less than in advance
If when third threshold value, being only placed with reference signal in the 1st OFDM symbol of control resource collection, the second threshold is less than
The first threshold；Or
It is less than default second threshold in the movement speed of terminal, and in the reference signal and Physical Downlink Shared Channel of PDCCH
When the reference signal of PDSCH has the quasi- QCLed relationship with positioning, only placed in the 1st OFDM symbol of control resource collection
There is reference signal；Or
It is less than default second threshold in the movement speed of terminal, and does not have in the reference signal of PDCCH and the reference signal of PDSCH
When having QCLed relationship, it is placed in the 1st OFDM symbol of control resource collection and in the 3rd OFDM symbol with reference to letter
Number.
28. terminal according to claim 27, which is characterized in that the transceiver is also used to:
Receive the high-level signaling that base station is sent, the reference signal of high-level signaling instruction PDCCH whether reference the letter with PDSCH
Number there are QCLed relationships.
29. a kind of base station, including memory, processor and it is stored on the memory and can runs on the processor
Computer program；It is characterized in that, the processor realizes such as the described in any item ginsengs of claim 1-7 when executing described program
Examine symbol arranging method.
30. a kind of terminal, including memory, processor and it is stored on the memory and can runs on the processor
Computer program；It is characterized in that, the processor is realized when executing described program as claim 8-14 is described in any item
Reference signal receiving method.
31. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
When realizing the step in reference signal configuration method as described in any one of claims 1 to 7 when execution or being executed by processor
It realizes such as the step in the described in any item reference signal receiving methods of claim 8~14.
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