CN112153743A - 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
CN112153743A
CN112153743A CN202011021247.3A CN202011021247A CN112153743A CN 112153743 A CN112153743 A CN 112153743A CN 202011021247 A CN202011021247 A CN 202011021247A CN 112153743 A CN112153743 A CN 112153743A
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terminal
dci
detected
blind detection
threshold
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CN202011021247.3A
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CN112153743B (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 the number threshold of downlink control information DCI to be detected by the terminal in the target unit according to the capability information; performing a blind detection operation within the target cell to detect the DCI; and when the number of the DCI detected in the target unit reaches the number threshold, stopping the blind detection operation of the terminal in the target unit. According to the technical scheme provided by the embodiment of the application, if the number of the DCI detected by the terminal in a target unit reaches the preset maximum value of the number, the terminal does not continue to execute 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.

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 pilot frequency measurement method, a pilot frequency measurement device, a terminal and a storage medium.
Background
A Physical Downlink Control Channel (PDCCH) carries Downlink Control Information (DCI). The terminal detects the DCI through blind detection.
In the related art, a terminal obtains a Set of PDCCH candidate sets (candidates) according to a Search Space (SS) parameter and a configuration of a Control Resource Set (CRS), and after channel estimation and demodulation of PDCCHs are completed, 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, where the method includes:
acquiring capability information of a terminal;
determining the number threshold of downlink control information DCI to be detected by the terminal in a target unit according to the capability information;
performing a blind detection operation within the target cell to detect the DCI;
and when the number of the DCI detected in the target unit reaches the number threshold, stopping the blind detection operation of the terminal in the target unit.
In another aspect, an embodiment of the present application provides a blind detection apparatus, where the apparatus includes:
the information acquisition module is used for acquiring the capability information of the terminal;
a threshold determining module, configured to determine, according to the capability information, a threshold of a number of downlink control information DCI to be detected by the terminal in a target unit;
a blind detection module configured to perform a blind detection operation within the target cell to detect the DCI;
the blind detection module is further configured to stop the blind detection operation of the terminal in the target unit when the number of the DCI detected in the target unit reaches the number threshold.
In yet another aspect, an embodiment of the present application provides a user terminal, which includes a processor and a memory, where the memory stores a computer program, and the computer program is loaded and executed by the processor to implement the blind detection method according to an aspect.
In yet another aspect, the present application provides a computer-readable storage medium, in which a computer program is stored, and the computer program is loaded and executed by a processor to implement the blind detection method according to the aspect.
In yet another aspect, embodiments of the present application provide a computer program product, the computer program product or computer program including 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 to cause the computer device to execute the blind detection method.
The technical scheme provided by the embodiment of the application can bring the beneficial effects of at least comprising:
the maximum value of the number of DCIs which need to be detected by the terminal in the target time unit is predetermined according to the capability information of the terminal, and 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 execute the blind detection operation in the target unit at the moment, 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 test method provided by an embodiment of the present application;
FIG. 3 is a flow chart of a blind test method according to another embodiment of the present application;
FIG. 4 is a schematic diagram of a partition span interval provided by one embodiment of the present application;
FIG. 5 is a flow chart of a blind test method according to another embodiment of the present application;
FIG. 6 is a flow chart of a blind test method according to another embodiment of the present application;
FIG. 7 is a flow chart of a blind test method according to another embodiment of the present application;
fig. 8 is a block diagram of a blind detection apparatus 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
To make the objects, technical solutions and advantages of the present application more clear, 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 by an embodiment of the present application is shown. The implementation environment comprises a terminal 11 and an access network device 12.
The terminal 11 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem having wireless communication functions, as well as various forms of terminals (UE), Mobile Stations (MS), terminal Equipment (terminal device), and so on. For convenience of description, the above-mentioned devices are collectively referred to as a terminal.
Access network device 12 may be a Base Station (BS), which is a device deployed in a wireless access network to provide wireless communication functions 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 using different radio access technologies, names of devices having a base station function may be different, for example, in an LTE system, referred to as an evolved node B (eNB or eNodeB), in a 3G communication system, referred to as a node B (node B), and so on. For convenience of description, in the embodiments of the present disclosure, the above-mentioned apparatus for providing a wireless communication function for a terminal is collectively referred to as an access network device.
The access network device 12 and the terminal 11 communicate with each other via some air interface technology, for example, via cellular technology. For example, the access network device and the terminal 11 communicate 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, the terminal needs to perform a blind detection operation to obtain a DCI format, so as to analyze corresponding DCI content.
In the related technology, the execution times of blind detection operation are determined according to the maximum blind detection times and the maximum number of non-overlapping CCEs in a time slot under the condition of different cell subcarrier intervals, and the blind detection times are more.
Based on this, the embodiment of the present application provides a technical solution, where a maximum value of the number of DCI that needs to be detected by the terminal in the target time unit is predetermined according to the capability information of the terminal, and if the terminal detects that the number of DCI satisfying the reliability criterion in the target time unit reaches the maximum value of the number, the terminal does not continue to perform the blind detection operation in the target time unit, so as to reduce the number of times of performing the blind detection operation, reduce the complexity of the blind detection, and save the power consumption of the terminal.
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 the capability information of the terminal.
The capability information of the terminal includes, but is not limited to: the distribution condition of DCI in different monitoring machines, the duplex communication mode of the terminal, the DCI interval, the configuration parameters of the span interval and the distribution condition of the DCI in one time slot. Optionally, the terminal acquires the capability information of the terminal from a Feature Group (Feature Group) or a communication protocol.
Step 202, determining the number threshold of the DCI to be detected by the terminal 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, one monitoring opportunity, one span interval, one time slot, and the like. The target unit also comprises other possible implementation manners, and the embodiment of the application is not limited to this.
The threshold of the number of the DCI to be detected by the terminal in the target unit is also the maximum value of the number of the DCI which the terminal needs to detect in the target unit.
Optionally, the terminal stores capability information and a corresponding relationship between the number thresholds of the DCI to be detected in the target unit, and after the terminal acquires the capability information, the terminal queries the corresponding relationship, so that the number threshold of the DCI detected in the target unit by the terminal can be determined.
Step 203, performing a blind detection operation in the target cell to detect the DCI.
And the terminal executes blind detection operation on a candidate set corresponding to the monitoring opportunity in the target unit to detect the DCI meeting the reliability standard.
The blind detection operation comprises soft bit extraction, descrambling, rate de-matching, sub-block de-interleaving, Polar decoding processing and the like. The reliability criteria include a combination of one or more of the following: a decoding quality criterion, a signal-to-noise ratio criterion, a bit error rate criterion, etc.
And step 204, stopping the blind detection operation of the terminal in the target unit when the number of the DCIs detected in the target unit reaches the number threshold.
In the embodiment of the present application, if DCI detected by a terminal in a target time unit reaches a preset number threshold, blind detection operation in the target time unit is no longer performed, and compared with the case that blind detection operation needs to be performed on all candidate sets in the related art, the embodiment of the present application can reduce the number of times of performing blind detection operation, and because the number of times of blind detection is reduced, the complexity of blind detection can also be reduced, and the power consumption of the terminal is saved.
In summary, according to the technical scheme provided in the embodiment of the present application, the maximum value of the number of DCI that the terminal needs to detect in the target time unit is predetermined according to the capability information of the terminal, and if the terminal detects that the number of DCI satisfying the reliability standard in the target time unit reaches the maximum value of the number, the terminal does not continue to perform the blind test operation in the target time unit, so that the number of times of performing the blind test operation is reduced, the complexity of the blind test is reduced, and the power consumption of the terminal is saved.
In a possible implementation manner, the terminal determines, based on the detection unit, a threshold of the number of downlink control information DCI detected in the target unit. In this case, the target unit is one monitoring opportunity, or a monitoring opportunity set composed of a plurality of monitoring opportunities. This case will be explained below in conjunction with the following.
And step 31, acquiring the capability information of the terminal.
In this implementation, the capability information of the terminal includes distribution of DCI in different monitoring devices and a 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 a slot (For type 1CSS with defined RRC configuration, type 3CSS, and UE-SS, the monitoring occasion is with the first 3OFDM symbols of a slot);
2. for FDD, each time slot of each scheduled CC processes a unicast uplink DCI and a unicast downlink DCI (processing one uplink DCI scheduling DL and one uplink DCI scheduling UL slot scheduled CC for FDD);
3. for TDD, each scheduled CC processes one unicast uplink DCI and two unicast downlink DCIs per slot (Processing one uplink DCI scheduling DL and 2 uplink DCI scheduling UL slot per scheduled CC for TDD).
And step 32, determining the monitoring occasions in the first n symbols in the 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.
Alternatively, n is determined according to the contents of the above-mentioned 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 the DCI to be detected by the terminal at the first monitoring time 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 that a first quantity threshold is a first numerical value; and when the duplex communication mode of the terminal is FDD, determining the first quantity threshold as a second numerical value. The first and second values may or may not be the same. Exemplarily, when the duplex communication mode of the terminal is TDD, the first number threshold is determined to be 3; when the duplex communication mode of the terminal is FDD, the first number threshold is determined to be 2.
And step 34, determining a second quantity threshold of the DCI to be detected by the terminal in the second detection unit according to the capability information.
The second number threshold is preconfigured by the terminal or the access network device. Illustratively, the terminal determines that the second number threshold of the DCI detected by the terminal in the second detection unit is 2 according to the capability information.
Step 35, performing a blind detection operation in the target cell to detect the DCI.
The terminal performs blind detection operation in the first detection unit and the second detection unit respectively to detect the DCI. Optionally, the terminal performs blind detection operations in the first detection unit and the second detection unit respectively according to the sequence of the first detection unit and the second detection unit.
And step 36, stopping the blind detection operation of the terminal in the first detection unit when the number of the DCIs detected in the first detection unit reaches a first number threshold.
When the DCI detected by the terminal in the first detection unit reaches a preset first number threshold, the terminal does not execute the blind detection operation in the first detection unit any more.
And step 37, stopping the blind detection operation of the terminal in the second detection unit when the number of the DCIs detected in the second detection unit reaches a second number threshold.
And when the DCI detected by the terminal in the second detection unit reaches a preset second number threshold, the terminal does not execute the blind detection operation in the second detection unit.
Referring collectively to fig. 3, a flow chart of a blind test method is shown according to an embodiment of the present application. The method comprises the following steps:
step 301, the monitoring occasions of the USS in the time slot are divided into monitoring occasions (i.e. first detection units) belonging to the first 3 symbols and monitoring occasions (i.e. second detection units) not belonging to the first 3 symbols.
Step 302, performing blind detection on the candidate set corresponding to the monitoring opportunities in the first 3 symbols.
Step 303, detecting whether the number of DCI meeting the reliability requirement reaches a number threshold corresponding to the monitoring time in the first 3 symbols.
If not, go to step 304; if so, go to step 305.
Step 304, detecting whether all candidate sets corresponding to the monitoring occasions in the first 3 symbols are detected.
If the detection is completed, step 306 is executed, and if the detection is not completed, the execution is restarted from step 302.
Step 305, skipping the blind detection operation of the remaining candidate sets corresponding to the monitoring occasions within the first 3 symbols.
That is, the terminal does not perform blind detection on the remaining candidate sets corresponding to the monitoring occasions within the first 3 symbols any more.
Step 306, determine whether the number of monitoring occasions not belonging to the first 3 symbols is greater than 0.
If not, the process is ended, and if not, the process goes to step 307.
Step 307, performing blind detection on the candidate set corresponding to the monitoring opportunity not belonging to the first 3 symbols.
Step 308, detecting whether the number of DCI meeting the reliability requirement reaches a number threshold corresponding to a monitoring occasion not belonging to the first 3 symbols.
If yes, go to step 309, otherwise go to step 310.
Step 309, skipping the blind detection operation of the remaining candidate sets corresponding to the monitoring occasions not belonging to the first 3 symbols.
That is, the terminal does not perform blind detection on the remaining candidate sets corresponding to the monitoring occasions that do not belong to the first 3 symbols any more. After which the terminal resumes execution from step 36.
Step 310, detecting whether all candidate sets corresponding to the monitoring occasions not belonging to the first 3 symbols are detected.
If the detection is completed, the terminal restarts the execution from step 306, and if the detection is not completed, the execution is restarted from step 307.
In summary, according to the technical scheme provided in the embodiment of the present application, the maximum value of the number of the DCI detected by the terminal in the target time unit is predetermined based on the monitoring time, and if the number of the DCI satisfying the reliability standard detected by the terminal in the target time unit reaches the maximum value of the number, the terminal does not continue to perform the blind test operation in the target time unit, so that the number of times of performing the blind test operation is reduced, the complexity of the blind test is reduced, and the power consumption of the terminal is saved.
In another possible implementation manner, the terminal determines a threshold of the number 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 one span interval. This case will be explained below in conjunction with the following.
And step 41, acquiring the capability information of the terminal.
In this 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:
a set of monitoring opportunities For the same span interval (For the set of monitoring of frequency of events while area with the same span):
1. in the set of monitoring occasions of FDD, each scheduled CC processes a unicast uplink DCI and a unicast downlink DCI (processing one uplink DCI scheduling DL and one uplink DCI scheduling UL per scheduled CC across this set of monitoring occasions for FDD);
2. in the set of monitoring occasions of TDD, each scheduled CC processes one unicast downlink DCI and two unicast uplink DCIs (processing one uplink DCI scheduling DL and two unicast uplink DCI scheduling UL per scheduled CC access this set of monitoring occasions for TDD).
Step 42, divide the monitoring opportunities in the USS into at least one span interval.
And the terminal determines the 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 corresponding relationship between the configuration parameters and the dividing manner. After the terminal acquires the configuration parameters of the span intervals, the corresponding dividing mode can be acquired by inquiring the corresponding relation, and then the monitoring time in the USS is divided into at least one span interval according to the acquired dividing mode.
Referring collectively to fig. 4, a schematic diagram of a partition span interval provided by an embodiment of the present application is shown. In the step (a), the span interval is set to 4, the duration of the span interval is set to 3, and the terminal divides the monitoring opportunity in the USS into 3 span intervals. In the part (b), the span interval is set to be 7, the duration of the span interval is set to be 2, and the terminal divides the monitoring opportunity in the USS into two span intervals.
And 43, determining the number threshold of the DCI to be detected by the terminal in each span interval according to the capability information of the terminal.
Optionally, the terminal determines a threshold of the number 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 number threshold of DCI detected by the terminal in a span interval is a third numerical value; and when the duplex communication mode of the terminal is FDD, determining that the threshold of the number of DCI detected by the terminal in one span interval is a fourth numerical value. The third value and the fourth value are different. Exemplarily, when the duplex communication mode of the terminal is TDD, determining that the threshold of the number of DCIs detected by the terminal within one span interval is 3; when the duplex communication mode of the terminal is FDD, the threshold of the number of DCI detected by the terminal in one span interval is determined to be 2.
Optionally, the number thresholds of the DCIs detected by the terminal in each span interval are the same or different. In the embodiment of the present application, only the threshold of the number of DCIs detected by the terminal in each span interval is taken as an example for explanation.
And step 44, performing blind detection operation in the target unit to detect the DCI.
The terminal performs a blind detection operation within a target span interval to detect the DCI. Optionally, the terminal performs blind detection operations in each span interval according to the time sequence of each span interval.
And step 45, stopping the blind detection operation of the terminal in the target span interval when the number of the DCI detected by the terminal in the target span interval reaches the number threshold corresponding to the target span interval.
The target span interval is any one of the above-mentioned at least one span intervals. When the DCI detected by the terminal in the target span interval reaches the preset number threshold, the blind detection operation in the span interval is not executed any more.
Referring collectively to fig. 5, a flow chart of a blind test method is shown according to an 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 a number threshold of the DCI to be detected corresponding to each span interval.
Step 502, detecting whether the number of the remaining span intervals is greater than 0.
If the value is greater than 0, go to step 503, and if the value is not greater than 0, end the process.
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 the DCI meeting the reliability requirement reaches a number threshold corresponding to the span interval.
If yes, go to step 505, and if not, go to step 506.
Step 505, skip the blind detection operation of the remaining candidate sets corresponding to the monitoring opportunities in the span interval.
That is, the terminal does not perform blind detection on the remaining candidate sets corresponding to the monitoring occasions within the span interval any more. After which the terminal 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 restarts the execution from step 502, and if the detection is not completed, the execution is restarted from step 503.
To sum up, according to the technical solution provided in the embodiment 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 span interval, and if the number of DCIs detected by the terminal in the target time unit and meets the reliability standard reaches the maximum value of the number, the terminal does not continue to perform the blind detection operation in the target time unit, so that the number of times of performing the blind detection operation is reduced, the complexity of the blind detection is reduced, and the power consumption of the terminal is saved.
In another possible implementation manner, the terminal determines the threshold of the number of DCIs detected by the terminal in the target unit based on the time slot. In this case, the target unit is one slot. This case will be explained below in conjunction with the following.
And step 61, acquiring the capability information of the terminal.
In this implementation, the capability information of the terminal includes the distribution of DCI in one slot, such as the number of DCI in one slot. Optionally, the distribution of the DCI in one slot is obtained from a communication protocol.
And step 62, determining the number threshold of the downlink control information DCI to be detected in the target time slot by the terminal according to the capability information.
The target time slot is any one time slot. Optionally, the terminal determines the threshold of the DCI number detected by the terminal in the target time slot according to the DCI distribution in the time slot. Illustratively, the terminal determines that the threshold of the number of DCIs detected by the terminal in the target time slot is 32 according to the distribution of the DCIs in one time slot.
And step 63, performing a blind detection operation in the target unit to detect the DCI.
And the terminal performs blind detection operation in the target time slot to detect the DCI.
And step 64, stopping the blind detection operation of the terminal in the target time slot when the number of the DCI detected in the target time slot reaches the number threshold.
When the DCI detected by the terminal in the target time slot reaches a preset quantity threshold, the blind detection operation in the target time slot is not executed any more.
Referring collectively to fig. 6, a flow chart of a blind test method is shown in one embodiment of the present application. The method comprises the following steps:
step 601, determining a threshold of the number of DCIs detected by the terminal in a time slot.
Step 602, a blind test operation is performed on a candidate set corresponding to a monitoring opportunity in a timeslot.
Step 603, detecting whether the number of the DCI meeting the reliability requirement reaches the number threshold corresponding to the time slot.
If yes, go to step 604, and if not, go to step 605.
Step 604, skipping the blind detection operation of the remaining candidate sets corresponding to the monitoring opportunities in the timeslot.
That is, the terminal does not perform blind detection on the remaining candidate set corresponding to the monitoring opportunity in the timeslot.
Step 605, detecting whether all candidate sets corresponding to the monitoring occasions in the time slot are detected.
If the detection is completed, the flow is terminated, and if the detection is not completed, the execution is resumed from step 602.
To sum up, according to the technical solution provided in the embodiment 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, and if the number of DCIs detected by the terminal in the target time unit and meets the reliability standard reaches the maximum value of the number, the terminal does not continue to perform the blind detection operation in the target time unit, so that the number of times of performing the blind detection operation is reduced, the complexity of the blind detection is reduced, and the power consumption of the terminal is saved.
Because a DCI interval usually exists between two adjacent DCIs, and no other DCI is included in the DCI interval, based on this characteristic, the embodiment of the present application provides a blind detection scheme, which does not perform a blind detection operation in the DCI interval, so as to reduce unnecessary blind detection times, reduce blind detection complexity, and further reduce power consumption of a terminal.
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 the capability information of the terminal.
Optionally, the capability information of the terminal includes configuration information of a DCI interval. The configuration information of the DCI interval is acquired from a feature group. Exemplarily, the following is defined in the feature set 3.5 a:
1. at a frequency of 15kHz, the DCI interval is 2OFDM symbols (2OFDM symbols for 15 kHz);
2. at a frequency of 30kHz, the DCI is spaced by 4OFDM symbols (4OFDM symbols for30 kHz);
3. at a frequency of 60kHz, the DCI is spaced by 7OFDM symbols (7OFDM symbols for60 kHz);
4. at a frequency of 120kHz, the DCI is spaced 11OFDM symbols (11OFDM symbols for 120 kHz).
Step 202b, if the DCI is detected by performing the blind detection operation in the target cell, determining a detection location where the DCI is detected.
The detection position and the execution position are both time positions and are represented by sequence numbers of monitoring occasions.
Step 202c, determining the execution position of the next blind detection operation according to the detection position of the DCI and the DCI interval.
Optionally, the terminal determines a position where a DCI interval exists between the terminal and the detection position of the DCI as an execution position of the next blind detection operation. Illustratively, the DCI interval is 4 monitoring occasions, and the terminal detects DCI at monitoring occasion 1, the terminal determines monitoring occasion 5 with the DCI interval between the terminal and monitoring occasion 1 as the execution position of the next blind detection operation.
In step 202d, the next blind test operation is performed at the execution position.
The terminal executes the next blind detection operation at the execution position, and does not execute the blind detection operation for the monitoring time between the detection position and the execution position.
Referring collectively to fig. 7, a flow chart illustrating a blind test operation according to one embodiment of the present application is shown.
Step 701, the monitoring occasions of the USS in the time slot are divided into monitoring occasions (i.e. first detection units) belonging to the first 3 symbols and monitoring occasions (i.e. second detection units) not belonging to the first 3 symbols.
Step 702, performing blind detection on the candidate set corresponding to the monitoring occasions in the first 3 symbols.
Step 703, detecting whether the number of DCI meeting the reliability requirement reaches a number threshold corresponding to the monitoring time in the first 3 symbols.
If not, go to step 704; if so, go to step 705.
Step 704, detecting whether all candidate sets corresponding to the monitoring occasions in the first 3 symbols are detected.
If the detection is completed, step 706 is executed, and if the detection is not completed, the execution is restarted from step 702.
Step 705, skipping the blind detection operation of the remaining candidate sets corresponding to the monitoring occasions within the first 3 symbols.
That is, the terminal does not perform blind detection on the remaining candidate sets corresponding to the monitoring occasions within the first 3 symbols any more.
In step 706, if DCI is detected, no blind detection operation is performed for the monitoring occasion with the time interval between the monitoring occasion with the DCI detected and the monitoring occasion with the DCI detected being smaller than the DCI interval.
Step 707, determine whether the number of monitoring occasions not belonging to the first 3 symbols is greater than 0.
If not, the process ends, and if greater than 0, step 708 is executed.
Step 708, performing a blind detection operation on the candidate set corresponding to the monitoring opportunity not belonging to the first 3 symbols.
Step 709, detecting whether the number of DCI meeting the reliability requirement reaches a number threshold corresponding to a monitoring occasion not belonging to the first 3 symbols.
If yes, step 710 is executed, and if not, step 711 is executed.
Step 710, skipping the blind detection operation of the remaining candidate sets corresponding to the monitoring occasions not belonging to the first 3 symbols.
That is, the terminal does not perform blind detection on the remaining candidate sets corresponding to the monitoring occasions that do not belong to the first 3 symbols any more. After which the terminal resumes execution from step 36.
Step 711, detecting whether all candidate sets corresponding to the monitoring occasions within the first 3 symbols are detected.
If the detection is completed, the terminal restarts from step 712, and if the detection is not completed, the terminal restarts from step 708.
In step 712, if DCI is detected, no blind detection operation is performed for the monitoring occasion with the time interval between the monitoring occasion with DCI detected and the monitoring occasion with DCI detected being smaller than the DCI interval.
To sum up, in the technical scheme provided in the embodiment of the present application, by obtaining the DCI interval, if DCI is detected on a candidate set corresponding to a certain monitoring opportunity, a blind test operation is performed on the candidate set corresponding to the monitoring opportunity having the DCI interval between the monitoring opportunities, and a blind test operation is not performed on the candidate set corresponding to the monitoring opportunity whose time interval between the monitoring opportunities is smaller than the DCI interval, so that the execution frequency of the blind test operation is further reduced, the blind test complexity is reduced, and the power consumption of the terminal is saved.
The DCI comprises uplink DCI and downlink DCI, and when the terminal determines the number threshold of the DCI detected by the terminal in the target unit according to the capability information, the terminal can respectively determine the number threshold corresponding to the uplink DCI and the number threshold corresponding to the downlink DCI, wherein the sum of the number threshold corresponding to the uplink DCI and the number threshold corresponding to the downlink DCI is also the number threshold of the DCI to be detected by the terminal in the target unit. When the terminal executes the blind detection operation, the number threshold corresponding to the uplink DCI and the number threshold corresponding to the downlink DCI are used for restricting the execution times of the blind detection operation, so that the blind detection times are further reduced. This case 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 by the terminal in the target unit and a fourth quantity threshold of the downlink DCI to be detected by the terminal in the target unit according to the capability information.
The sum of the third quantity threshold and the fourth quantity threshold is the quantity threshold of DCI to be detected by the terminal in the target unit.
In an 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, according to the capability information, that the third quantity threshold of the uplink DCI to be detected by the terminal in the target unit is 1, and the fourth quantity threshold of the downlink DCI to be detected by the terminal in the target unit is 1. If the duplex communication mode of the terminal is TDD, the terminal determines that the third quantity threshold of the uplink DCI to be detected in the target unit by the terminal is 1 and the 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 by the terminal in the target unit is 2 and the fourth quantity threshold of the downlink DCI to be detected by the terminal in the target unit 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, according to the capability information, that the third quantity threshold of the uplink DCI to be detected by the terminal in the target unit is 16, and the fourth quantity threshold of the downlink DCI to be detected by the terminal in the target unit is 16.
When the terminal respectively determines a third quantity threshold and a fourth quantity threshold, 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 when the number of the downlink DCI detected by the terminal in the target unit reaches a fourth number threshold, stopping executing the blind detection operation for detecting the downlink DCI in the target unit.
To sum up, in the technical solution provided in the embodiment 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 the uplink DCI detected by the terminal in the target unit 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 executed; 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 only executing the blind detection operation for detecting the uplink DCI, so that the execution times of the blind detection operation are further reduced, the blind detection complexity is reduced, and the power consumption of the terminal is saved.
In the following, embodiments of the apparatus of the present application are described, and for portions of the embodiments of the apparatus not described in detail, reference may be made to technical details disclosed in the above-mentioned method embodiments.
Referring to fig. 8, a block diagram of a blind detection apparatus provided in an exemplary embodiment of the present application is shown. The blind detection device can be realized by software, hardware or a combination of the two to form all or part of the terminal. This blind inspection device includes:
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 threshold of a number of downlink control information DCI to be detected by the terminal in a target unit.
A blind detection module 803, configured to perform a blind detection operation within the target cell to detect the DCI.
The blind detection module 804 is further configured to stop the blind detection operation of the terminal in the target unit when the number of the DCI detected in the target unit reaches the number threshold.
In summary, according to the technical scheme provided in the embodiment of the present application, the maximum value of the number of DCI that the terminal needs to detect in the target time unit is predetermined according to the capability information of the terminal, and if the terminal detects that the number of DCI satisfying the reliability standard in the target time unit reaches the maximum value of the number, the terminal does not continue to perform the blind test operation in the target time unit, so that the number of times of performing the blind test operation is reduced, the complexity of the blind test is reduced, and the power consumption of the terminal is saved.
In an optional 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 the 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 in the first detection unit according to the capability information;
and determining a second quantity threshold of the DCI to be detected by the terminal in 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 number of the DCI detected in the first detection unit reaches the first number threshold;
and when the number of the DCI detected in the second detection unit reaches the second number threshold, stopping the blind detection operation of the terminal in the second detection unit.
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 mode TDD or a frequency division duplex mode FDD.
In an optional embodiment provided based on the embodiment shown in fig. 8, the threshold determining module 802 is configured to:
dividing the monitoring opportunity in the user-specific search space USS into at least one span interval;
and determining the number threshold of the DCI to be detected of the terminal in each span interval according to the capability information of the terminal.
The blind detection module 803 is configured to:
and when the number of the DCI detected by the terminal in a target span interval reaches a number threshold corresponding to the target span interval, stopping the blind detection operation of the terminal in the target span interval.
Optionally, the threshold determining module 802 is configured to: and determining the DCI quantity threshold detected by the terminal in each span interval according to the duplex communication mode of the terminal.
In an optional embodiment provided based on the embodiment shown in fig. 8, the threshold determining module 802 is configured to: and determining the number threshold of the 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 when the number of the DCI detected in the target time slot reaches the number threshold, stopping the blind detection operation of the terminal in the target time slot.
In an alternative embodiment provided based on the embodiment shown in fig. 8, the blind detection module 803 is used for detecting the blind
Acquiring DCI intervals 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 the position where the DCI interval exists between the position where the DCI interval exists and the detection position of the DCI as the execution position of the next blind detection operation.
In an optional 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 by the terminal in a target unit and a fourth quantity threshold of the downlink DCI to be detected by the terminal in the target unit 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 by the terminal in the target unit.
The blind detection module 803 is further used for
When the number of the uplink DCI detected in the target unit reaches the third number threshold, stopping executing blind detection operation for detecting the uplink DCI in the target unit;
and when the number of the downlink DCI detected in the target unit reaches the fourth number threshold, stopping executing the blind detection operation for detecting the downlink DCI in the target unit.
It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the functional modules is illustrated, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the internal structure of the apparatus may be divided into different functional modules to implement all or part of the functions described above. In addition, the apparatus and method embodiments provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments for details, which are not described herein again.
Fig. 9 is a schematic diagram illustrating a structure of a terminal according to an exemplary embodiment.
The terminal 900 includes a transmitter 901, a receiver 902, and a processor 903. The processor 903 may be a controller, and is represented as "controller/processor 903" in fig. 9. Optionally, the terminal 900 may further include a modem processor 905, where the modem processor 905 may include an encoder 906, a modulator 907, a decoder 908, and a demodulator 909.
In one example, the transmitter 901 conditions (e.g., converts to analog, filters, amplifies, and frequency upconverts, etc.) the output samples and generates an uplink signal, which is transmitted via an antenna to the access network equipment described in the embodiments above. 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, downconverts, and digitizes, etc.) the received signal from the antenna and provides input samples. In modem processor 905, an 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 coded 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 for transmission to terminal 900. The encoder 906, modulator 907, demodulator 909, and decoder 908 can be implemented by a combined modem processor 905. These elements are processed in accordance with the radio access technology employed by the radio access network (e.g., the access technologies of LTE and other evolved systems). It is to be noted that when terminal 900 does not include modem processor 905, the above-mentioned functions of modem processor 905 can also be performed by processor 903.
The processor 903 controls and manages the operation of the terminal 900, and is used for executing the processing procedure performed by the terminal 900 in the embodiment of the present disclosure. For example, the processor 903 is further configured to perform various steps of the terminal side in the foregoing method embodiments, and/or other steps of the technical solutions described in the embodiments of the present disclosure.
Further, terminal 900 can also include a memory 904, where memory 904 is used to store program codes and data for terminal 900.
In an exemplary embodiment, a computer-readable storage medium is further provided, where at least one instruction is stored in the computer-readable storage medium, and the at least one instruction is loaded and executed by a processor of a terminal to implement the blind detection method in the above-described method embodiments.
Alternatively, the computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic tape, a floppy disk, an optical data storage device, and the like.
In an exemplary embodiment, a computer program product or computer program 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 to cause the computer device to execute the blind detection method.
The above description is only exemplary of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A blind detection method, the method comprising:
acquiring capability information of a terminal;
determining the number threshold of downlink control information DCI to be detected by the terminal in a target unit according to the capability information;
performing a blind detection operation within the target cell to detect the DCI;
and when the number of the DCI detected in the target unit reaches the number threshold, stopping the blind detection operation of the terminal in the target unit.
2. The method according to claim 1, wherein the determining, according to the capability information, a threshold for a number of downlink control information DCI to be detected by the terminal in a target unit includes:
determining monitoring occasions in the first n symbols in the 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;
determining a first quantity threshold of the DCI detected by the terminal in the first detection unit according to the capability information;
determining a second quantity threshold of the DCI detected by the terminal in the second detection unit according to the capability information;
stopping the blind detection operation of the terminal in the target unit when the number of the DCI detected in the target unit reaches the number threshold, including:
stopping blind detection operation of the terminal in the first detection unit when the number of the DCI detected in the first detection unit reaches the first number threshold;
and when the number of the DCI detected in the second detection unit reaches the second number threshold, stopping the blind detection operation of the terminal in the second detection unit.
3. The method of claim 2, wherein the determining the first number threshold of the DCI detected by the terminal in the first detection unit according to the capability information 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 mode TDD or a frequency division duplex mode FDD.
4. The method according to claim 1, wherein the determining, according to the capability information, a threshold for a number of downlink control information DCI to be detected by the terminal in a target unit includes:
dividing the monitoring opportunity in the user-specific search space USS into at least one span interval;
determining the DCI quantity threshold detected by the terminal in each span interval according to the capability information of the terminal;
stopping the blind detection operation of the terminal in the target unit when the number of the DCI detected in the target unit reaches the number threshold, including:
and when the number of the DCI detected by the terminal in a target span interval reaches a number threshold corresponding to the target span interval, stopping the blind detection operation of the terminal in the target span interval.
5. The method of claim 4, wherein the determining the threshold of the number of DCIs detected by the terminal in each span interval according to the capability information of the terminal comprises:
and determining the DCI quantity threshold 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 threshold for a number of downlink control information DCI to be detected by the terminal in a target unit includes:
determining the number threshold of Downlink Control Information (DCI) detected by the terminal in a target time slot according to the capability information;
stopping the blind detection operation of the terminal in the target unit when the number of the DCI detected in the target unit reaches the number threshold, including:
and when the number of the DCI detected in the target time slot reaches the number threshold, stopping the blind detection operation of the terminal in the target time slot.
7. The method according to any one of claims 1 to 6, wherein the blind detection operation within the target cell to detect the DCI comprises:
acquiring DCI intervals 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 a position where the DCI interval exists between the position where the DCI interval exists and the detection position of the DCI as an execution position of the next blind detection operation;
and executing the next blind detection operation at the execution position.
8. A blind testing apparatus, comprising:
the information acquisition module is used for acquiring the capability information of the terminal;
a threshold determining module, configured to determine, according to the capability information, a threshold of a number of downlink control information DCI to be detected by the terminal in a target unit;
a blind detection module configured to perform a blind detection operation within the target cell to detect the DCI;
the blind detection module is further configured to stop the blind detection operation of the terminal in the target unit when the number of the DCI detected in the target unit reaches the number threshold.
9. A terminal characterized in that it comprises a processor and a memory, said memory storing a computer program which is loaded by said processor and which executes the blind detection method according to any one of claims 1 to 7.
10. A computer-readable storage medium, in which a computer program is stored which is loaded and executed by a processor to implement the blind detection method according to any one of claims 1 to 7.
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