CN112153743B - Blind detection method, device, terminal and storage medium - Google Patents

Blind detection method, device, terminal and storage medium Download PDF

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Publication number
CN112153743B
CN112153743B CN202011021247.3A CN202011021247A CN112153743B CN 112153743 B CN112153743 B CN 112153743B CN 202011021247 A CN202011021247 A CN 202011021247A CN 112153743 B CN112153743 B CN 112153743B
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terminal
dci
blind detection
detected
detection operation
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CN112153743A (en
Inventor
刘君
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The embodiment of the application provides a blind detection method, a blind detection device, a terminal and a storage medium. The method comprises the following steps: acquiring capability information of a terminal; determining a quantity threshold of Downlink Control Information (DCI) to be detected in a target unit by a terminal according to the capability information; performing a blind detection operation within the target unit to detect DCI; and stopping blind detection operation of the terminal in the target unit when the quantity of DCI detected in the target unit reaches a quantity threshold. According to the technical scheme provided by the embodiment of the application, if the quantity of DCI detected by the terminal in the target unit reaches the preset quantity maximum value, the terminal does not continue to execute the blind detection operation in the target unit, the execution times of the blind detection operation are reduced, the blind detection complexity is reduced, and the power consumption of the terminal is saved.

Description

Blind detection method, device, terminal and storage medium
Technical Field
The embodiment of the application relates to the technical field of wireless communication, in particular to a different frequency measurement method, a device, a terminal and a storage medium.
Background
The physical downlink control channel (Physical Downlink Control Channel, PDCCH) carries downlink control information (Downlink Control Information, DCI). The terminal detects DCI through blind detection.
In the related art, a terminal obtains a group of PDCCH candidate sets (candidates) according to a Search Space (SS) parameter and a configuration of a related control resource set (Control Resource Set, CRS), and after completing channel estimation and demodulation of the PDCCH, the terminal performs a blind detection operation on each PDCCH candidate set to detect DCI.
Disclosure of Invention
The embodiment of the application provides a blind detection method, a blind detection device, a terminal and a storage medium. The technical scheme is as follows:
in one aspect, an embodiment of the present application provides a blind detection method, including:
acquiring capability information of a terminal;
determining a quantity threshold of Downlink Control Information (DCI) to be detected in a target unit by the terminal according to the capability information;
performing a blind detection operation within the target unit to detect the DCI;
and stopping blind detection operation of the terminal in the target unit when the quantity of the DCI detected in the target unit reaches the quantity threshold.
In another aspect, an embodiment of the present application provides a blind detection device, including:
the information acquisition module is used for acquiring the capability information of the terminal;
the threshold determining module is used for determining the quantity threshold of downlink control information DCI to be detected in the target unit by the terminal according to the capability information;
A blind detection module, configured to perform a blind detection operation in the target unit to detect the DCI;
and the blind detection module is further used for stopping the blind detection operation of the terminal in the target unit when the quantity of the DCI detected in the target unit reaches the quantity threshold.
In yet another aspect, an embodiment of the present application provides a user terminal, where the user terminal includes a processor and a memory, where the memory stores a computer program that is loaded and executed by the processor to implement the blind detection method according to one aspect.
In yet another aspect, embodiments of the present application provide a computer readable storage medium having a computer program stored therein, the computer program being loaded and executed by a processor to implement the blind detection method as described in one aspect.
In yet another aspect, embodiments of the present application provide a computer program product, the computer program product, or computer program, comprising computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the blind detection method described above.
The technical scheme provided by the embodiment of the application can bring beneficial effects at least including:
the maximum value of the quantity of DCIs which the terminal needs to detect in the target time unit is determined in advance according to the capability information of the terminal, and if the terminal detects that the quantity of DCIs meeting the reliability standard in the target unit reaches the maximum value of the quantity, the terminal does not continue to execute blind detection operation in the target unit, so that the execution times of the blind detection operation are reduced, the blind detection complexity is reduced, and the power consumption of the terminal is saved.
Drawings
FIG. 1 is a schematic illustration of an implementation environment provided by one embodiment of the present application;
FIG. 2 is a flow chart of a blind detection method provided by one embodiment of the present application;
fig. 3 is a flowchart of a blind detection method provided in another embodiment of the present application;
FIG. 4 is a schematic diagram of a partitioned span interval provided by one embodiment of the present application;
fig. 5 is a flowchart of a blind detection method provided in another embodiment of the present application;
fig. 6 is a flowchart of a blind detection method provided in another embodiment of the present application;
fig. 7 is a flowchart of a blind detection method provided in another embodiment of the present application;
FIG. 8 is a block diagram of a blind detection device according to an embodiment of the present application;
Fig. 9 is a block diagram of a terminal according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of an implementation environment provided in one embodiment of the present application is shown. The implementation environment includes a terminal 11 and an access network device 12.
The terminal 11 may include various handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of terminals (UEs), mobile Stations (MSs), terminal devices (terminal devices), etc. having a wireless communication function. For convenience of description, the above-mentioned devices are collectively referred to as a terminal.
The access network device 12 may be a Base Station (BS), which is a device deployed in a radio access network to provide wireless communication functionality for terminals. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of devices with base station functionality may vary, for example in LTE systems, referred to as evolved NodeB (eNB or eNodeB), in 3G communication systems, referred to as Node B (Node B), etc. For convenience of description, in the embodiments of the present disclosure, the above devices for providing a wireless communication function for a terminal are collectively referred to as an access network device.
Access network device 12 and terminal 11 communicate with each other via some air interface technology, for example via cellular technology. For example, communication is performed between the access network device and the terminal 11 via the Uu interface.
The access network device 12 sends DCI, such as DCI carrying uplink and downlink resource allocation, power control, and HARQ information, to the terminal 11, and when the terminal expects a certain DCI information, it needs to perform a blind detection operation to obtain a DCI format, and further analyze the corresponding DCI content.
In the related art, the execution times of the blind detection operation are determined according to the maximum blind detection times and the maximum non-overlapping CCE number in one time slot under the condition of different cell subcarrier intervals, and the blind detection times are more.
Based on this, the embodiment of the application provides a technical scheme, by determining, in advance, the maximum value of the number of DCIs that the terminal needs to detect in the target time unit according to the capability information of the terminal, if the terminal detects that the number of DCIs meeting the reliability standard in the target unit reaches the maximum value of the number, the terminal does not continue to perform the blind detection operation in the target unit, so that the execution times of the blind detection operation are reduced, the blind detection complexity is reduced, and the power consumption of the terminal is saved.
Referring to fig. 2, a flowchart of a blind detection method according to an embodiment of the present application is shown. The method comprises the following steps:
Step 201, acquiring capability information of a terminal.
The capability information of the terminal includes, but is not limited to: the distribution condition of DCI in different monitoring occasions, the duplex communication mode of the terminal, the DCI interval, the configuration parameters of the span interval and the distribution condition of DCI in one time slot. Optionally, the terminal obtains the capability information of the terminal from a Feature Group (Feature Group) or a communication protocol.
Step 202, determining the quantity threshold of DCI to be detected in the target unit according to the capability information.
Target units include, but are not limited to: a monitoring opportunity combination consisting of a plurality of monitoring opportunities, a monitoring opportunity, a span interval, a time slot, etc. The target unit may also include other possible implementations, which are not limited in this embodiment.
The number threshold of the DCI to be detected in the target unit by the terminal is the maximum value of the number of the DCI to be detected in the target unit by the terminal.
Optionally, the terminal stores capability information and a corresponding relation between the quantity threshold of DCI to be detected in the target unit, and after the terminal acquires the capability information, the quantity threshold of DCI detected in the target unit by the terminal can be determined by querying the corresponding relation.
In step 203, a blind detection operation is performed in the target unit to detect DCI.
And the terminal performs blind detection operation on the candidate set corresponding to the monitoring time in the target unit to detect DCI meeting the reliability standard.
Blind detection operations include soft bit extraction, descrambling, de-rate matching, sub-block de-interleaving, polar decoding processing, and the like. The reliability criteria include a combination of one or more of the following: coding quality criteria, signal to noise ratio criteria, bit error rate criteria, etc.
And step 204, stopping the blind detection operation of the terminal in the target unit when the quantity of DCI detected in the target unit reaches a quantity threshold.
In the embodiment of the application, if DCI detected by a terminal in a target time unit reaches a preset number threshold, blind detection operation in the target unit is not executed any more, and compared with the case that blind detection operation is required to be executed on all candidate sets in the related art, the blind detection operation execution times can be reduced, and blind detection complexity can be reduced and terminal power consumption can be saved due to the reduction of blind detection times.
In summary, according to the technical solution provided in the embodiments of the present application, the maximum value of the number of DCIs that the terminal needs to detect in the target time unit is predetermined according to the capability information of the terminal, if the terminal detects that the number of DCIs that meets the reliability standard in the target unit reaches the maximum value of the number, the terminal does not continue to perform the blind detection operation in the target unit, so that the execution times of the blind detection operation are reduced, the blind detection complexity is reduced, and the power consumption of the terminal is saved.
In one possible implementation, the terminal determines a number threshold of downlink control information DCI detected in the target unit based on the detection unit. In this case, the target unit is one monitoring opportunity, or a monitoring opportunity set composed of a plurality of monitoring opportunities. This will be explained in connection with the following.
And step 31, acquiring capability information of the terminal.
In this implementation, the capability information of the terminal includes the distribution of DCI in different monitoring occasions, and the duplex communication mode of the terminal. Illustratively, feature set 3.1 defines the following:
1. for type 1CSS, type 3CSS and UE-SS with dedicated RRC configuration, the monitoring occasion is within the first 3OFDM symbols of the slot (For type 1CSS with dedicated RRC configuration,type 3CSS,and UE-SS, the monitoring occasion is within the first 3OFDM symbols of a slot);
2. for FDD, one unicast uplink DCI and one unicast downlink DCI (Processing one unicast DCI scheduling DL and one unicast DCI scheduling UL per slot per scheduled CC for FDD) are processed per slot per scheduled CC;
3. for TDD, one unicast uplink DCI and two unicast downlink DCIs are processed per slot per scheduled CC (Processing one unicast DCI scheduling DL and 2unicast DCI scheduling UL per slot per scheduled CC for TDD).
And step 32, determining the monitoring occasions in the first n symbols in the user-specific search space USS as a first detection unit according to the capability information of the terminal, and determining each monitoring occasion except the first n symbols in the USS as a second detection unit.
Optionally, n is determined according to the content in the above feature set 3.1. Illustratively, n is 3. That is, the first detection unit is a set of monitoring occasions within the first 3 symbols, and the second detection unit is each monitoring occasion except for the first 3 symbols.
And step 33, determining a first quantity threshold of DCI to be detected at the first monitoring time by the terminal according to the capability information.
Optionally, the terminal determines the first number threshold according to a duplex communication mode of the terminal, where the duplex communication mode of the terminal is a time division duplex mode TDD or a frequency division duplex mode FDD.
When the duplex communication mode of the terminal is TDD, determining a first quantity threshold as a first numerical value; and when the duplex communication mode of the terminal is FDD, determining the first quantity threshold as a second value. The first value and the second value may be the same or different. Illustratively, when the duplex communication mode of the terminal is TDD, determining that the first number threshold is 3; when the duplex communication mode of the terminal is FDD, the first quantity threshold is determined to be 2.
And step 34, determining a second quantity threshold of DCI to be detected by the terminal in the second detection unit according to the capability information.
The second number of thresholds is preconfigured by the terminal or access network device. Illustratively, the terminal determines that the second number threshold of DCI detected by the terminal at the second detection unit is 2 according to the capability information.
In step 35, a blind detection operation is performed within the target unit to detect DCI.
The terminal performs a blind detection operation in the first detection unit and the second detection unit, respectively, to detect DCI. Optionally, the terminal performs blind detection operation in the first detection unit and the second detection unit according to the sequence of the first detection unit and the second detection unit.
Step 36, stopping the blind detection operation of the terminal in the first detection unit when the number of DCIs detected in the first detection unit reaches a first number threshold.
And when the DCI detected in the first detection unit reaches a preset first quantity threshold, the terminal does not execute the blind detection operation in the first detection unit.
And step 37, stopping blind detection operation of the terminal in the second detection unit when the quantity of DCI detected in the second detection unit reaches a second quantity threshold.
And when the DCI detected in the second detection unit reaches a preset second quantity threshold, the terminal does not execute the blind detection operation in the second detection unit.
Referring in conjunction to fig. 3, a flow chart of a blind detection method is shown in one embodiment of the present application. The method comprises the following steps:
in step 301, the monitoring occasions of USS in the timeslot are divided into monitoring occasions belonging to the first 3 symbols (i.e. the first detection unit) and monitoring occasions not belonging to the first 3 symbols (i.e. the second detection unit).
Step 302, performing blind detection operation on the candidate set corresponding to the monitoring opportunities in the first 3 symbols.
Step 303, detecting whether the number of DCIs reaching the reliability requirement reaches the number threshold corresponding to the monitoring opportunities in the first 3 symbols.
If not, go to step 304; if so, step 305 is performed.
Step 304, detecting whether all candidate sets corresponding to the monitoring opportunities in the first 3 symbols are detected.
If the detection is complete, step 306 is performed, and if not, execution resumes from step 302.
Step 305, skipping the blind detection operation of the remaining candidate sets corresponding to the monitoring opportunities in the first 3 symbols.
That is, the terminal no longer performs blind detection operation on the remaining candidate sets corresponding to the monitoring opportunities in the first 3 symbols.
Step 306, it is determined whether the number of monitoring opportunities not belonging to the first 3 symbols is greater than 0.
If not greater than 0, the process is ended, and if less than 0, step 307 is performed.
Step 307, performing blind detection operation on the candidate set corresponding to the monitoring opportunities not belonging to the first 3 symbols.
In step 308, it is detected whether the number of DCIs meeting the reliability requirement reaches a number threshold corresponding to monitoring opportunities not belonging to the first 3 symbols.
If yes, go to step 309, if not, go to step 310.
Step 309, skipping the blind detection operation of the remaining candidate set not belonging to the monitoring opportunities within the first 3 symbols.
That is, the terminal no longer performs blind detection operation on the remaining candidate sets corresponding to monitoring opportunities not belonging to the first 3 symbols. The terminal then resumes execution from step 36.
In step 310, it is detected whether all candidate sets corresponding to monitoring opportunities not belonging to the first 3 symbols are detected.
If the detection is completed, the terminal resumes execution from step 306, and if not, resumes execution from step 307.
In summary, according to the technical solution provided in the embodiments of the present application, by determining, in advance, based on the monitoring opportunity, the maximum value of the number of DCIs detected by the terminal in the target time unit, if the number of DCIs detected by the terminal in the target unit to meet the reliability standard reaches the maximum value of the number, the terminal does not continue to perform the blind detection operation in the target unit, so that the execution times of the blind detection operation are reduced, the blind detection complexity is reduced, and the power consumption of the terminal is saved.
In another possible implementation, the terminal determines a number threshold of downlink control information DCI detected by the terminal in the target unit based on the span interval. In this case, the target unit is a span interval. This will be explained in connection with the following.
And step 41, acquiring the capability information of the terminal.
In such an implementation, the capability information of the terminal includes configuration parameters of the span interval and a duplex communication mode of the terminal. Illustratively, feature set 3.1.5 defines the following:
for a set of monitoring occasions (For the set of monitoring occasions which are within the same span) of the same span interval:
1. in the set of monitoring occasions for FDD, each scheduled CC processes one unicast uplink DCI and one unicast downlink DCI (Processing one unicast DCI scheduling DL and one unicast DCI scheduling UL per scheduled CC across this set of monitoring occasions for FDD);
2. in this set of monitoring opportunities for TDD, each scheduled CC handles one unicast downlink DCI and two unicast uplink DCI (Processing one unicast DCI scheduling DL and two unicast DCI scheduling UL per scheduled CC across this set of monitoring occasions for TDD).
In step 42, the monitoring opportunities in the USS are divided into at least one span interval.
And the terminal determines a division mode according to the configuration parameters of the span interval. The configuration parameters of the span interval comprise the value of the span interval and the duration of the span interval.
Optionally, the terminal stores a correspondence between the configuration parameters and the division modes. After the terminal obtains the configuration parameters of the span interval, the corresponding dividing mode can be obtained by inquiring the corresponding relation, and then the monitoring time in the USS is divided into at least one span interval according to the obtained dividing mode.
Referring in conjunction to FIG. 4, a schematic diagram of a partitioned span interval provided by one embodiment of the present application is shown. In the step (a), the span interval has a value of 4, the duration of the span interval is 3, and the terminal divides the monitoring time in the USS into 3 span intervals. In the step (b), the span interval has a value of 7, the duration of the span interval is 2, and the terminal divides the monitoring opportunity in the USS into two span intervals.
And step 43, determining the quantity threshold of DCI to be detected in each span interval according to the capability information of the terminal.
Optionally, the terminal determines a number threshold of DCIs detected by the terminal in each span interval according to the duplex communication mode of the terminal. The duplex communication mode of the terminal is TDD or FDD.
When the duplex communication mode of the terminal is TDD, determining that the quantity threshold of DCI detected by the terminal in one span interval is a third value; and when the duplex communication mode of the terminal is FDD, determining the quantity threshold of DCI detected by the terminal in one span interval as a fourth value. The third value and the fourth value are different. Illustratively, when the duplex communication mode of the terminal is TDD, determining that the number threshold of DCIs detected by the terminal in one span interval is 3; when the duplex communication mode of the terminal is FDD, determining that the quantity threshold of DCIs detected by the terminal in one span interval is 2.
Optionally, the number threshold of DCIs detected by the terminal in each span interval is the same, or is different. In the embodiment of the present application, only the case where the number threshold of DCIs detected by the terminal in each span interval is the same will be described.
In step 44, a blind detection operation is performed within the target unit to detect DCI.
The terminal performs a blind detection operation within the target span interval to detect DCI. Optionally, the terminal performs the blind detection operation in each span interval according to the time sequence of each span interval.
And step 45, stopping blind detection operation of the terminal in the target span interval when the quantity of DCIs detected by the terminal in the target span interval reaches a quantity threshold corresponding to the target span interval.
The target span interval is any one of the at least one span interval described above. And when the DCI detected in the target span interval reaches a preset quantity threshold, the terminal does not execute blind detection operation in the span interval.
Referring in conjunction to fig. 5, a flow chart of a blind detection method is shown in one embodiment of the present application. The method comprises the following steps:
step 501, dividing the detection opportunity in the time slot into at least one span interval, and setting the quantity threshold of DCI to be detected corresponding to each span interval.
Step 502, it is detected whether the number of remaining span intervals is greater than 0.
If it is greater than 0, step 503 is executed, and if it is not greater than 0, the flow is ended.
Step 503, performing blind detection operation on the candidate set corresponding to the monitoring opportunity in each span interval.
Step 504, detecting whether the number of DCIs reaching the reliability requirement reaches the number threshold corresponding to the span interval.
If so, go to step 505, and if not, go to step 506.
Step 505, skipping the blind detection operation of the remaining candidate sets corresponding to the monitoring opportunities in the span interval.
That is, the terminal no longer performs blind detection on the remaining candidate sets corresponding to the monitoring opportunities within the span interval. The terminal then resumes execution from step 502.
Step 506, detecting whether all candidate sets corresponding to the monitoring opportunities in the span interval are detected.
If the detection is completed, the terminal resumes execution from step 502, and if not, resumes execution from step 503.
In summary, according to the technical solution provided in the embodiments of the present application, by determining, in advance, based on the span interval, the maximum number of DCIs detected by the terminal in the target time unit, if the terminal detects that the number of DCIs meeting the reliability standard in the target unit reaches the maximum number, the terminal does not continue to perform the blind detection operation in the target unit, so as to reduce the execution times of the blind detection operation, reduce the blind detection complexity, and save the power consumption of the terminal.
In another possible implementation, the terminal determines a number threshold of DCIs detected by the terminal within the target unit based on the time slots. In this case, the target unit is one slot. This will be explained in connection with the following.
Step 61, acquiring capability information of the terminal.
In this implementation, the capability information of the terminal includes a distribution of DCI in one slot, such as the number of DCI in one slot. Optionally, the DCI is acquired from a communication protocol in a distribution condition within one time slot.
Step 62, determining the quantity threshold of the downlink control information DCI to be detected in the target time slot according to the capability information.
The target time slot is any time slot. Optionally, the terminal determines the quantity threshold of the DCI detected by the terminal in the target time slot according to the distribution condition of the DCI in one time slot. Illustratively, the terminal determines that the number of DCIs detected by the terminal in the target time slot is 32 according to the distribution condition of the DCIs in one time slot.
In step 63, a blind detection operation is performed within the target unit to detect DCI.
The terminal performs a blind detection operation within the target slot to detect DCI.
Step 64, stopping the blind detection operation of the terminal in the target time slot when the number of DCIs detected in the target time slot reaches the number threshold.
And when the DCI detected in the target time slot reaches a preset quantity threshold, the terminal does not execute the blind detection operation in the target time slot.
Referring in conjunction to fig. 6, a flow chart of a blind detection method is shown in one embodiment of the present application. The method comprises the following steps:
step 601, determining a number threshold of DCIs detected by a terminal in one slot.
Step 602, performing blind detection operation on a candidate set corresponding to the monitoring time in one time slot.
In step 603, it is detected whether the number of DCIs meeting the reliability requirement reaches the number threshold corresponding to the slot.
If so, step 604 is performed, and if not, step 605 is performed.
Step 604, skipping the blind detection operation of the remaining candidate sets corresponding to the monitoring opportunities in the time slot.
That is, the terminal does not perform blind detection on the remaining candidate sets corresponding to the monitoring opportunities in the time slot.
Step 605, it is detected whether all candidate sets corresponding to the monitoring opportunities in the time slot are detected.
If the detection is complete, the process is ended, and if not, execution resumes from step 602.
In summary, according to the technical solution provided in the embodiments of the present application, the maximum value of the number of DCIs detected by the terminal in the target time unit is predetermined based on the time slot, if the terminal detects that the number of DCIs meeting the reliability standard in the target unit reaches the maximum value of the number, the terminal does not continue to perform the blind detection operation in the target unit, so that the execution times of the blind detection operation are reduced, the blind detection complexity is reduced, and the power consumption of the terminal is saved.
Because a DCI interval generally exists between two adjacent DCIs, other DCIs are not included in the DCI interval, based on the characteristic, the embodiment of the application provides a blind detection scheme, and blind detection operation is not executed in the DCI interval, so that unnecessary blind detection times are reduced, blind detection complexity is reduced, and terminal power consumption is further reduced.
In an alternative embodiment provided based on the embodiment shown in fig. 2, step 202 comprises the following sub-steps:
step 202a, acquiring a DCI interval according to capability information of a terminal.
Optionally, the capability information of the terminal includes configuration information of the DCI interval. The configuration information of the DCI interval is obtained from the feature set. Illustratively, the following is defined in feature set 3.5 a:
1. at a frequency of 15kHz, the DCI interval is 2OFDM symbols (2OFDM symbols for 15kHz);
2. at a frequency of 30kHz, the DCI interval is 4OFDM symbols (4OFDM symbols for30kHz);
3. at a frequency of 60kHz, the DCI interval is 7OFDM symbols (7OFDM symbols for60kHz);
4. at a frequency of 120kHz, the DCI interval is 11OFDM symbols (11OFDM symbols for 120kHz).
In step 202b, if the blind detection operation is performed in the target unit to detect DCI, the detection position of the detected DCI is determined.
The detection position and the execution position are both time positions, and are represented by the sequence number of the monitoring time.
Step 202c, determining the execution position of the next blind detection operation according to the detection position of the DCI and the DCI interval.
Alternatively, the terminal determines a position where a DCI interval exists between the detected position of DCI as the execution position of the next blind detection operation. For example, the DCI interval is 4 monitoring occasions, and if the terminal detects DCI on the monitoring occasion 1, the terminal determines the monitoring occasion 5, which has a DCI interval with the monitoring occasion 1, as the execution position of the next blind detection operation.
Step 202d, the next blind detection operation is performed at the execution position.
The terminal performs the next blind detection operation at the execution position, and for the monitoring opportunity between the detection position and the execution position, the terminal does not perform the blind detection operation.
Referring in conjunction to fig. 7, a flow chart of a blind detection operation is shown in one embodiment of the present application.
In step 701, the monitoring occasions of USS in the timeslot are divided into monitoring occasions belonging to the first 3 symbols (i.e. the first detection unit) and monitoring occasions not belonging to the first 3 symbols (i.e. the second detection unit).
Step 702, performing blind detection operation on the candidate set corresponding to the monitoring opportunities in the first 3 symbols.
In step 703, it is detected whether the number of DCIs meeting the reliability requirement reaches a number threshold corresponding to the monitoring opportunities in the first 3 symbols.
If not, go to step 704; if so, step 705 is performed.
Step 704, detecting whether all candidate sets corresponding to the monitoring opportunities in the first 3 symbols are detected.
If the detection is complete, step 706 is performed, and if not, execution resumes from step 702.
Step 705, skipping the blind detection operation of the remaining candidate sets corresponding to the monitoring opportunities in the first 3 symbols.
That is, the terminal no longer performs blind detection operation on the remaining candidate sets corresponding to the monitoring opportunities in the first 3 symbols.
In step 706, if DCI is detected, no blind detection operation is performed for a monitoring occasion whose time interval from the monitoring occasion at which DCI is detected is smaller than the DCI interval.
Step 707 determines whether the number of monitoring opportunities not belonging to the first 3 symbols is greater than 0.
If not, the process is ended, and if not, step 708 is performed.
Step 708, performing blind detection operation on the candidate set corresponding to the monitoring opportunities not belonging to the first 3 symbols.
Step 709, detecting whether the number of DCIs reaching the reliability requirement reaches the number threshold corresponding to the monitoring opportunities not belonging to the first 3 symbols.
If so, step 710 is performed, and if not, step 711 is performed.
Step 710, skipping the blind detection operation of the remaining candidate set not belonging to the monitoring opportunities within the first 3 symbols.
That is, the terminal no longer performs blind detection operation on the remaining candidate sets corresponding to monitoring opportunities not belonging to the first 3 symbols. The terminal then resumes execution from step 36.
In step 711, it is detected whether all candidate sets corresponding to the monitoring opportunities in the first 3 symbols are detected.
If the detection is complete, the terminal resumes execution from step 712, and if not, resumes execution from step 708.
Step 712, if DCI is detected, no blind detection operation is performed for a monitoring occasion whose time interval from the monitoring occasion at which DCI is detected is smaller than the DCI interval.
In summary, according to the technical solution provided in the embodiments of the present application, by obtaining the DCI interval, if DCI is detected on the candidate set corresponding to a certain monitoring opportunity, a blind detection operation is performed on the candidate set corresponding to the monitoring opportunity where the DCI interval exists between the monitoring opportunities, and a blind detection operation is not performed on the candidate set corresponding to the monitoring opportunity where the time interval between the monitoring opportunities is smaller than the DCI interval, so that the execution times of the blind detection operation are further reduced, the blind detection complexity is reduced, and the terminal power consumption is saved.
The DCI comprises uplink DCI and downlink DCI, when the terminal determines the quantity threshold of the DCI detected by the terminal in the target unit according to the capability information, the terminal can respectively determine the quantity threshold corresponding to the uplink DCI and the quantity threshold corresponding to the downlink DCI, and the sum of the quantity threshold corresponding to the uplink DCI and the quantity threshold corresponding to the downlink DCI is the quantity threshold of the DCI to be detected by the terminal in the target unit. And when the terminal executes the blind detection operation, the number of times of the blind detection operation is restrained by the number threshold corresponding to the uplink DCI and the number threshold corresponding to the downlink DCI, so that the number of times of the blind detection is further reduced. This will be explained below.
In an alternative embodiment provided based on the embodiment shown in fig. 2, step 202 is implemented as: and determining a third quantity threshold of the uplink DCI to be detected in the target unit by the terminal and a fourth quantity threshold of the downlink DCI to be detected in the target unit by the terminal according to the capability information.
The sum of the third number threshold and the fourth number threshold is the number threshold of DCI to be detected in the target unit by the terminal.
In one example, when the terminal performs the blind detection operation based on the span interval, if the duplex communication mode of the terminal is FDD, the terminal determines that the third number threshold of the uplink DCI to be detected by the terminal in the target unit is 1 and the fourth number threshold of the downlink DCI to be detected by the terminal in the target unit is 1 according to the capability information. If the duplex communication mode of the terminal is TDD, the terminal determines that a third quantity threshold of the uplink DCI to be detected in the target unit by the terminal is 1 and a fourth quantity threshold of the downlink DCI to be detected in the target unit by the terminal is 2 according to the capability information; or the terminal determines that the third quantity threshold of the uplink DCI to be detected in the target unit by the terminal is 2 and the fourth quantity threshold of the downlink DCI to be detected in the target unit by the terminal is 1 according to the capability information.
In another example, when the terminal performs the blind detection operation based on the time slot, the terminal determines that the third number threshold of the uplink DCI to be detected by the terminal in the target unit is 16 and the fourth number threshold of the downlink DCI to be detected by the terminal in the target unit is 16 according to the capability information.
When the terminal determines a third quantity threshold and a fourth quantity threshold respectively, if the quantity of the uplink DCI detected by the terminal in the target unit reaches the third quantity threshold, stopping executing blind detection operation for detecting the uplink DCI in the target unit; and stopping performing blind detection operation for detecting the downlink DCI in the target unit when the number of the downlink DCI detected by the terminal in the target unit reaches a fourth number threshold.
In summary, according to the technical solution provided in the embodiments of the present application, by presetting a number threshold corresponding to the uplink DCI and a number threshold corresponding to the downlink DCI, if the number of uplink DCIs detected in the target unit by the terminal reaches the number threshold corresponding to the uplink DCI, the blind detection operation for detecting the uplink DCI is stopped in the target unit, and only the blind detection operation for detecting the downlink DCI is performed; and if the number of the downlink DCI detected by the terminal in the target unit reaches the number threshold corresponding to the downlink DCI, stopping executing the blind detection operation for detecting the downlink DCI in the target unit, and executing only the blind detection operation for detecting the uplink DCI, thereby further reducing the execution times of the blind detection operation, reducing the blind detection complexity and saving the terminal power consumption.
The following is an apparatus embodiment of the present application, and for parts of the apparatus embodiment that are not described in detail, reference may be made to the technical details disclosed in the method embodiment described above.
Referring to fig. 8, a block diagram of a blind detection device according to an exemplary embodiment of the present application is shown. The blind detection device may be implemented as all or part of the terminal by software, hardware or a combination of both. The blind detection device comprises:
an information obtaining module 801, configured to obtain capability information of a terminal.
A threshold determining module 802, configured to determine, according to the capability information, a number threshold of downlink control information DCI to be detected by the terminal in the target unit.
A blind detection module 803, configured to perform a blind detection operation in the target unit to detect the DCI.
The blind detection module 804 is further configured to stop a blind detection operation of the terminal in the target unit when the number of DCIs detected in the target unit reaches the number threshold.
In summary, according to the technical solution provided in the embodiments of the present application, the maximum value of the number of DCIs that the terminal needs to detect in the target time unit is predetermined according to the capability information of the terminal, if the terminal detects that the number of DCIs that meets the reliability standard in the target unit reaches the maximum value of the number, the terminal does not continue to perform the blind detection operation in the target unit, so that the execution times of the blind detection operation are reduced, the blind detection complexity is reduced, and the power consumption of the terminal is saved.
In an alternative embodiment provided based on the embodiment shown in fig. 8, the threshold determining module 802 is configured to:
determining detection units in the first n symbols in a user-specific search space USS as first detection units according to the capability information of the terminal, and determining detection units except the first n symbols in the USS as second detection units;
determining a first quantity threshold of the DCI to be detected by the terminal at the first detection unit according to the capability information;
and determining a second quantity threshold of the DCI to be detected by the terminal at the second detection unit according to the capability information.
The blind detection module 803 is configured to:
stopping blind detection operation of the terminal in the first detection unit when the quantity of the DCI detected in the first detection unit reaches the first quantity threshold;
and stopping blind detection operation of the terminal in the second detection unit when the quantity of the DCI detected in the second detection unit reaches the second quantity threshold.
Optionally, the threshold determining module 802 is configured to: and determining the first quantity threshold according to the duplex communication mode of the terminal, wherein the duplex communication mode of the terminal is a Time Division Duplex (TDD) mode or a Frequency Division Duplex (FDD) mode.
In an alternative embodiment provided based on the embodiment shown in fig. 8, the threshold determining module 802 is configured to:
dividing monitoring opportunities in the user-specific search space USS into at least one span interval;
and determining the quantity threshold of the DCI to be detected in each span interval by the terminal according to the capability information of the terminal.
The blind detection module 803 is configured to:
and stopping blind detection operation of the terminal in the target span interval when the quantity of DCIs detected by the terminal in the target span interval reaches a quantity threshold corresponding to the target span interval.
Optionally, the threshold determining module 802 is configured to: and determining the quantity threshold of the DCI detected by the terminal in each span interval according to the duplex communication mode of the terminal.
In an alternative embodiment provided based on the embodiment shown in fig. 8, the threshold determining module 802 is configured to: and determining the quantity threshold of downlink control information DCI to be detected in the target time slot by the terminal according to the capability information.
The blind detection module 803 is configured to: and stopping the blind detection operation of the terminal in the target time slot when the quantity of the DCI detected in the target time slot reaches the quantity threshold.
In an alternative embodiment provided based on the embodiment shown in fig. 8, the blind detection module 803 is configured to
Acquiring a DCI interval according to the capability information of the terminal;
if the DCI is detected by performing blind detection operation in the target unit, determining a detection position where the DCI is detected;
determining the execution position of the next blind detection operation according to the detection position of the DCI and the DCI interval;
and executing the next blind detection operation at the execution position.
Optionally, the blind detection module 803 is configured to: and determining a position where the DCI interval exists between the detection position of the DCI as an execution position of the next blind detection operation.
In an alternative embodiment provided based on the embodiment shown in fig. 8, the threshold determining module 802 is configured to: and determining a third quantity threshold of the uplink DCI to be detected in the target unit by the terminal and a fourth quantity threshold of the downlink DCI to be detected in the target unit by the terminal according to the capability information, wherein the sum of the third quantity threshold and the fourth quantity threshold is the quantity threshold of the DCI detected in the target unit by the terminal.
The blind detection module 803 is further configured to
Stopping performing a blind detection operation for detecting the uplink DCI in the target unit when the number of the uplink DCIs detected in the target unit reaches the third number threshold;
and stopping performing blind detection operation for detecting the downlink DCI in the target unit when the quantity of the downlink DCI detected in the target unit reaches the fourth quantity threshold.
It should be noted that, when the apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the foregoing functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to perform all or part of the functions described above. In addition, the apparatus and the method embodiments provided in the foregoing embodiments belong to the same concept, and specific implementation processes of the apparatus and the method embodiments are detailed in the method embodiments and are not repeated herein.
Fig. 9 is a schematic diagram illustrating a structure of a terminal according to an exemplary embodiment.
The terminal 900 comprises a transmitter 901, a receiver 902 and a processor 903. The processor 903 may also be a controller, which is denoted as "controller/processor 903" in fig. 9. Optionally, the terminal 900 may further comprise a modem processor 905, wherein the modem processor 905 may comprise an encoder 906, a modulator 907, a decoder 908, and a demodulator 909.
In one example, the transmitter 901 conditions (e.g., analog converts, filters, amplifies, and upconverts, etc.) the output samples and generates an uplink signal, which is transmitted via an antenna to the access network device described in the above embodiments. On the downlink, the antenna receives the downlink signal transmitted by the access network device in the above embodiment. Receiver 902 conditions (e.g., filters, amplifies, frequency downconverts, digitizes, etc.) the received signal from the antenna and provides input samples. In modem processor 905, encoder 906 receives traffic data and signaling messages to be sent on the uplink and processes (e.g., formats, encodes, and interleaves) the traffic data and signaling messages. A modulator 907 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples. A demodulator 909 processes (e.g., demodulates) the input samples and provides symbol estimates. A decoder 909 processes (e.g., deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages that are transmitted to the terminal 900. The encoder 906, modulator 907, demodulator 909, and decoder 908 may be implemented by a synthesized modem processor 905. These elements are handled according to the radio access technology employed by the radio access network (e.g., the access technology of LTE and other evolved systems). It should be noted that, when the terminal 900 does not include the modem processor 905, the above-described functions of the modem processor 905 may also be performed by the processor 903.
The processor 903 controls and manages the actions of the terminal 900, and is used to perform the processing performed by the terminal 900 in the above-described embodiments of the present disclosure. The processor 903 is further configured to perform, for example, the steps on the terminal side in the above method embodiments, and/or other steps of the technical solutions described in the embodiments of the present disclosure.
Further, the terminal 900 can also include a memory 904, the memory 904 for storing program codes and data for the terminal 900.
In an exemplary embodiment, there is also provided a computer readable storage medium having stored therein at least one instruction that is loaded and executed by a processor of a terminal to implement the blind detection method in the above method embodiment.
Alternatively, the above-mentioned computer readable storage medium may be a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic tape, a floppy disk, an optical data storage device, or the like.
In an exemplary embodiment, a computer program product is also provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the blind detection method described above.
The foregoing description of the exemplary embodiments of the present application is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and scope of the invention.

Claims (9)

1. A method of blind detection, the method comprising:
acquiring capability information of a terminal, wherein the capability information comprises at least one of distribution conditions of Downlink Control Information (DCI) in different monitoring occasions, DCI intervals, configuration parameters of span intervals and distribution conditions of DCI in a time slot;
determining a quantity threshold of DCI to be detected in a target unit by the terminal according to the capability information;
if the DCI is detected by performing blind detection operation in the target unit, determining a detection position where the DCI is detected;
determining a position with the DCI interval between the DCI and the detection position of the DCI as an execution position of the next blind detection operation;
executing the next blind detection operation at the execution position;
stopping blind detection operation of the terminal in the target unit when the quantity of DCIs which meet the reliability standard and are detected in the target unit reaches the quantity threshold;
Wherein the reliability criteria include at least one of a coding quality criteria, a signal to noise ratio criteria, and a bit error rate criteria.
2. The method according to claim 1, wherein the determining, according to the capability information, a number threshold of downlink control information DCI to be detected by the terminal in the target unit includes:
according to the capability information of the terminal, determining monitoring occasions in the first n symbols in a user-specific search space USS as a first detection unit, and determining each monitoring occasion except the first n symbols in the USS as a second detection unit;
determining a first quantity threshold of the DCI detected by the terminal at the first detection unit according to the capability information;
determining a second quantity threshold of the DCI detected by the terminal at the second detection unit according to the capability information;
and stopping the blind detection operation of the terminal in the target unit when the quantity of DCIs which meet the reliability standard and are detected in the target unit reaches the quantity threshold, wherein the blind detection operation comprises the following steps:
stopping blind detection operation of the terminal in the first detection unit when the number of DCIs which meet the reliability standard and are detected in the first detection unit reaches the first number threshold;
And stopping blind detection operation of the terminal in the second detection unit when the quantity of DCIs which meet the reliability standard and are detected in the second detection unit reaches the second quantity threshold.
3. The method of claim 2, wherein the determining, based on the capability information, a first number threshold of the DCIs detected by the terminal at the first detection unit comprises:
and determining the first quantity threshold according to the duplex communication mode of the terminal, wherein the duplex communication mode of the terminal is a Time Division Duplex (TDD) mode or a Frequency Division Duplex (FDD) mode.
4. The method according to claim 1, wherein the determining, according to the capability information, a number threshold of downlink control information DCI to be detected by the terminal in the target unit includes:
dividing monitoring opportunities in the user-specific search space USS into at least one span interval;
determining the quantity threshold of the DCI detected by the terminal in each span interval according to the capability information of the terminal;
and stopping the blind detection operation of the terminal in the target unit when the quantity of DCIs which meet the reliability standard and are detected in the target unit reaches the quantity threshold, wherein the blind detection operation comprises the following steps:
And stopping blind detection operation of the terminal in the target span interval when the quantity of DCIs which meet the reliability standard and are detected by the terminal in the target span interval reaches a quantity threshold corresponding to the target span interval.
5. The method of claim 4, wherein the determining the number threshold of DCIs detected by the terminal in each span interval based on the capability information of the terminal comprises:
and determining the quantity threshold of the DCI detected by the terminal in each span interval according to the duplex communication mode of the terminal.
6. The method according to claim 1, wherein the determining, according to the capability information, a number threshold of downlink control information DCI to be detected by the terminal in the target unit includes:
determining a quantity threshold of downlink control information DCI detected by the terminal in a target time slot according to the capability information;
and stopping the blind detection operation of the terminal in the target unit when the quantity of DCIs which meet the reliability standard and are detected in the target unit reaches the quantity threshold, wherein the blind detection operation comprises the following steps:
and stopping the blind detection operation of the terminal in the target time slot when the quantity of DCIs which meet the reliability standard and are detected in the target time slot reaches the quantity threshold.
7. A blind inspection device, the device comprising:
the information acquisition module is used for acquiring capability information of the device, wherein the capability information comprises at least one of distribution conditions of Downlink Control Information (DCI) in different monitoring occasions, DCI intervals, configuration parameters of span intervals and distribution conditions of DCI in a time slot;
a threshold determining module, configured to determine, according to the capability information, a number threshold of DCI to be detected in the target unit by the device;
the blind detection module is used for determining the detection position of the DCI when the DCI is detected by performing blind detection operation in the target unit;
determining a position with the DCI interval between the DCI and the detection position of the DCI as an execution position of the next blind detection operation;
executing the next blind detection operation at the execution position;
the blind detection module is further configured to stop a blind detection operation in the target unit when the number of DCIs detected in the target unit that meet the reliability standard reaches the number threshold;
wherein the reliability criteria include at least one of a coding quality criteria, a signal to noise ratio criteria, and a bit error rate criteria.
8. A terminal comprising a processor and a memory, the memory storing a computer program, the computer program being loaded by the processor and executing the blind detection method according to any one of claims 1 to 6.
9. A computer readable storage medium, characterized in that it has stored therein a computer program that is loaded and executed by a processor to implement the blind detection method according to any one of claims 1 to 6.
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