CN112398578B - Method and device for detecting Physical Downlink Control Channel (PDCCH) and terminal - Google Patents

Method and device for detecting Physical Downlink Control Channel (PDCCH) and terminal Download PDF

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Publication number
CN112398578B
CN112398578B CN201910941785.5A CN201910941785A CN112398578B CN 112398578 B CN112398578 B CN 112398578B CN 201910941785 A CN201910941785 A CN 201910941785A CN 112398578 B CN112398578 B CN 112398578B
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drx
pdcch
csi
terminal
detection
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CN112398578A (en
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赵铮
王加庆
杨美英
罗晨
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0038—Blind format detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0052—Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables
    • H04L1/0053—Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables specially adapted for power saving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • 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
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • 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
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method, a device and a terminal for detecting a Physical Downlink Control Channel (PDCCH), wherein the method comprises the following steps: detecting the DMRS on a PDCCH detection opportunity configured by the network side equipment; performing energy-saving PDCCH blind detection; performing PDCCH detection in at least one subsequent DRX period according to the detection result of the DMRS or the blind detection result of the energy-saving PDCCH; and/or presetting at least one of a DRX duration timer, CSI and an SRS according to the detection result of the DMRS and/or the blind detection result of the energy-saving PDCCH; according to the embodiment of the invention, through DMRS detection and energy-saving PDCCH blind detection, the PDCCH missed detection is reduced, the problem of resource conflict caused by CSI reporting and SRS sending is avoided when DMRS detects false alarm, and meanwhile, the timely reporting of the CSI information is ensured.

Description

Method and device for detecting Physical Downlink Control Channel (PDCCH) and terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a terminal for detecting a physical downlink control channel PDCCH.
Background
In an NR (New Radio, New air interface) system, a connected user configures DRX (Discontinuous Reception), and a Physical Downlink Control Channel (PDCCH) may indicate whether each DRX cycle needs to be activated. The PDCCH signaling notifying the terminal to perform PDCCH detection for a subsequent period is called an energy-Saving PDCCH (i.e., Power Saving-PDCCH, or PS-PDCCH for short), and the PDCCH detection performed by the user without performing PDCCH detection for a subsequent period is called a sleep, and the PDCCH detection performed by the user is called a wake-up.
The resource block for transmitting the energy-saving PDCCH includes a DMRS (DeModulation Reference Signal), and whether the PDCCH is transmitted or not can be determined by detecting a sequence of the DMRS. Compared with the PDCCH decoding, the DMRS sequence detection is simpler, if the DMRS passes the detection, the channel estimation and the blind detection aiming at the PDCCH are carried out, if the DMRS is not detected, the base station is considered not to transmit the PDCCH, and the subsequent channel estimation and the blind detection are not carried out, so that the PDCCH blind detection times can be reduced, and the power consumption of a user is saved.
As described above, one way to perform presence detection using energy Saving PDCCH DMRS is to introduce energy Saving PDCCH related information into an initialization seed scrambled by a DMRS, for example, a parameter called energy Saving PDCCH DMRS is configured on a PS-RNTI (Power save-Radio Network Temporary Identity) for scrambling an energy Saving PDCCH.
There is an assumption that PDCCH detection by using energy saving PDCCH DMRS is performed, that is, the base station does not send energy saving PDCCH, and the base station does not send energy saving PDCCH may indicate that the user sleeps, and then send energy saving PDCCH to indicate that the user wakes up, so that when the user fails to detect energy saving PDCCH, the user also considers that the base station has sent sleep, and thus the PDCCH in the subsequent DRX cycle is missed.
Disclosure of Invention
The embodiment of the invention aims to provide a method, a device and a terminal for detecting a Physical Downlink Control Channel (PDCCH) so as to solve the problem that the missed detection of the PDCCH of a subsequent DRX period is caused by the missed detection of an energy-saving PDCCH by the terminal in the prior art.
In order to solve the above problem, an embodiment of the present invention provides a method for detecting a physical downlink control channel PDCCH, which is applied to a terminal, and includes:
detecting a demodulation reference signal (DMRS) on a PDCCH detection opportunity configured by network side equipment;
performing energy-saving PDCCH blind detection;
performing PDCCH detection in at least one subsequent Discontinuous Reception (DRX) cycle according to the detection result of the DMRS or the blind detection result of the energy-saving PDCCH; and/or performing preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to the detection result of the DMRS and/or the blind detection result of the energy-saving PDCCH.
Wherein, the performing energy-saving PDCCH blind detection comprises:
if the detection value of the DMRS is larger than a preset threshold value, performing energy-saving PDCCH blind test; otherwise, the energy-saving PDCCH blind detection is not carried out.
Performing PDCCH detection in at least one subsequent Discontinuous Reception (DRX) cycle according to the detection result of the DMRS, wherein the PDCCH detection comprises the following steps:
if the detection value of the DMRS is larger than a preset threshold value, the terminal carries out PDCCH detection in at least one subsequent discontinuous reception DRX period;
and performing PDCCH detection in at least one subsequent discontinuous reception DRX period according to the blind detection result of the energy-saving PDCCH, wherein the method comprises the following steps:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH passes, the terminal detects the PDCCH in at least one subsequent Discontinuous Reception (DRX) cycle.
Wherein, the presetting processing is performed on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to the detection result of the DMRS or the blind detection result of the energy-saving PDCCH, and comprises the following steps:
if the Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH fails, in a DRX period after energy saving PDCCH DMRS, the terminal performs PDCCH detection and performs preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS);
alternatively, the first and second electrodes may be,
if the detection value of the DMRS is larger than the preset threshold value, in a DRX period after energy saving PDCCH DMRS, the terminal performs PDCCH detection and performs preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS).
Wherein, the presetting processing is performed on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to the detection result of the DMRS and the blind detection result of the energy-saving PDCCH, and comprises the following steps:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH fails and the detection value of the DMRS is larger than a preset threshold value, presetting at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) in a DRX period after energy saving PDCCH DMRS.
The terminal performs PDCCH detection, including:
the terminal detects the PDCCH scrambled by the target identifier; wherein the target identification comprises at least one of:
a cell-radio network temporary identity (C-RNTI);
configuring a scheduling-radio network temporary identifier (CS-RNTI);
interrupting the wireless-network temporary identifier INT-RNTI;
time slot format indication-radio network temporary identity SFI-RNTI;
semi-persistent-channel state information-radio network temporary identity SP-CSI-RNTI;
transmitting power control-physical uplink control channel-radio network temporary identifier TPC-PUCCH-RNTI;
transmitting power control-physical uplink shared channel-radio network temporary identifier TPC-PUSCH-RNTI;
transmitting power control-channel sounding reference signal-radio network temporary identity TPC-SRS-RNTI.
Wherein the preset processing of at least one of the DRX duration timer, the channel state information CSI and the channel sounding reference signal SRS comprises:
starting the DRX duration timer; if the CSI mask is 1, the terminal does not report the CSI within the time corresponding to the DRX activation period; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the operation of the DRX deactivation timer;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the operation of the DRX deactivation timer.
Wherein, the presetting processing at least one item of DRX duration timer, Channel State Information (CSI) and channel sounding reference signal comprises:
starting the DRX duration timer, and if the CSI mask is 1, reporting the CSI by the terminal within the time corresponding to the operation of the DRX duration timer; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the DRX activation period.
Wherein, the presetting processing at least one item of DRX duration timer, Channel State Information (CSI) and channel sounding reference signal comprises:
starting the DRX duration timer, and the terminal does not report CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and the terminal does not transmit SRS in the time corresponding to the DRX active period.
Wherein, the presetting processing at least one item of DRX duration timer, Channel State Information (CSI) and channel sounding reference signal comprises:
and the DRX duration timer is not started, the media intervention control MAC layer of the terminal does not start the reporting of the CSI and the transmission of the SRS according to the DRX duration timer, and the physical layer of the terminal maintains the timer in the DRX period according to the DRX parameters configured by the high layer.
The embodiment of the invention also provides a detection device of the physical downlink control channel PDCCH, which is applied to a terminal and comprises the following components:
the first detection module is used for detecting a demodulation reference signal (DMRS) on a PDCCH detection opportunity configured by network side equipment;
the second detection module is used for carrying out energy-saving PDCCH blind detection;
the processing module is used for carrying out PDCCH detection in at least one subsequent discontinuous reception DRX period according to the detection result of the DMRS or the blind detection result of the energy-saving PDCCH; and/or performing preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to the detection result of the DMRS and/or the blind detection result of the energy-saving PDCCH.
An embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor and a computer program stored on the memory and executable on the processor, the transceiver receiving and transmitting data under the control of the processor, the processor being configured to read the program in the memory and perform the following operations:
detecting a demodulation reference signal (DMRS) on a PDCCH detection opportunity configured by network side equipment;
performing energy-saving PDCCH blind detection;
performing PDCCH detection in at least one subsequent Discontinuous Reception (DRX) cycle according to the detection result of the DMRS or the blind detection result of the energy-saving PDCCH; and/or performing preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to the detection result of the DMRS and/or the blind detection result of the energy-saving PDCCH.
Wherein, the processor is used for reading the program in the memory and executing the following operations:
if the detection value of the DMRS is larger than a preset threshold value, performing energy-saving PDCCH blind test; otherwise, the energy-saving PDCCH blind detection is not carried out.
Wherein, the processor is used for reading the program in the memory and executing the following operations:
and if the detection value of the DMRS is larger than a preset threshold value, the terminal performs PDCCH detection in at least one subsequent discontinuous reception DRX period.
Wherein, the processor is used for reading the program in the memory and executing the following operations:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH passes, the terminal detects the PDCCH in at least one subsequent Discontinuous Reception (DRX) cycle.
Wherein, the processor is used for reading the program in the memory and executing the following operations:
if the Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH fails, in a DRX period after energy saving PDCCH DMRS, the terminal performs PDCCH detection and performs preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS);
alternatively, the first and second electrodes may be,
if the detection value of the DMRS is larger than the preset threshold value, in a DRX period after energy saving PDCCH DMRS, the terminal performs PDCCH detection and performs preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS).
Wherein, the processor is used for reading the program in the memory and executing the following operations:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH fails and the detection value of the DMRS is larger than a preset threshold value, presetting at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) in a DRX period after energy saving PDCCH DMRS.
Wherein, the processor is used for reading the program in the memory and executing the following operations:
if the detection value of the DMRS is larger than a preset threshold value, performing energy-saving PDCCH blind test; otherwise, the energy-saving PDCCH blind detection is not carried out.
Wherein, the processor is used for reading the program in the memory and executing the following operations:
the terminal detects the PDCCH scrambled by the target identifier; wherein the target identification comprises at least one of:
a cell-radio network temporary identity (C-RNTI);
configuring a scheduling-radio network temporary identifier (CS-RNTI);
interrupting the wireless-network temporary identifier INT-RNTI;
time slot format indication-radio network temporary identity SFI-RNTI;
semi-persistent-channel state information-radio network temporary identity SP-CSI-RNTI;
transmitting power control-physical uplink control channel-radio network temporary identifier TPC-PUCCH-RNTI;
transmitting power control-physical uplink shared channel-radio network temporary identifier TPC-PUSCH-RNTI;
transmitting power control-channel sounding reference signal-radio network temporary identity TPC-SRS-RNTI.
Wherein, the processor is used for reading the program in the memory and executing the following operations:
starting the DRX duration timer; if the CSI mask is 1, the terminal does not report the CSI within the time corresponding to the DRX activation period; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the operation of the DRX deactivation timer;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the operation of the DRX deactivation timer.
Wherein, the processor is used for reading the program in the memory and executing the following operations:
starting the DRX duration timer, and if the CSI mask is 1, reporting the CSI by the terminal within the time corresponding to the operation of the DRX duration timer; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the DRX activation period.
Wherein, the processor is used for reading the program in the memory and executing the following operations:
starting the DRX duration timer, and the terminal does not report CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and the terminal does not transmit SRS in the time corresponding to the DRX active period.
Wherein, the processor is used for reading the program in the memory and executing the following operations:
and the DRX duration timer is not started, the media intervention control MAC layer of the terminal does not start the reporting of the CSI and the transmission of the SRS according to the DRX duration timer, and the physical layer of the terminal maintains the timer in the DRX period according to the DRX parameters configured by the high layer.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for detecting a physical downlink control channel PDCCH as described above are implemented.
The technical scheme of the invention at least has the following beneficial effects:
in the method, the device and the terminal for detecting the Physical Downlink Control Channel (PDCCH) of the embodiment of the invention, whether the PDCCH is detected or not is determined through the detection of the DMRS and/or the blind detection of the energy-saving PDCCH, and at least one of a DRX duration timer, a Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) is processed, so that the terminal can give consideration to both false detection and false alarm performance when the energy-saving PDCCH is detected.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for detecting a physical downlink control channel PDCCH according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a detection apparatus for a physical downlink control channel PDCCH according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a method for detecting a physical downlink control channel PDCCH, which is applied to a terminal, and includes:
step 11, detecting a demodulation reference signal DMRS on a PDCCH detection opportunity configured by network side equipment;
step 12, performing energy-saving PDCCH blind detection;
step 13, performing PDCCH detection in at least one subsequent discontinuous reception DRX period according to the detection result of the DMRS or the blind detection result of the energy-saving PDCCH; and/or performing preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to the detection result of the DMRS and/or the blind detection result of the energy-saving PDCCH.
As an alternative embodiment, the execution sequence of step 11 and step 12 is not limited, and step 11 may be executed first, and then step 12 may be executed; step 12 may be executed first, and then step 11 may be executed; alternatively, the notification performs step 11 and step 12.
Further, as yet another alternative embodiment, step 12 includes:
if the detection value of the DMRS is larger than a preset threshold value, performing energy-saving PDCCH blind test; otherwise, the energy-saving PDCCH blind detection is not carried out.
In other words, the terminal may perform DMRS detection first, perform energy-saving PDCCH blind detection if the detection value of the DMRS is greater than a preset threshold, and not perform the energy-saving PDCCH blind detection otherwise. The preset threshold value may be defined by a standard or configured through RRC signaling. On one hand, the number of the energy-saving PDCCH blind tests can be reduced, so that the power consumption is saved; and on the other hand, the missed detection probability of the energy-saving PDCCH can be reduced. And if the Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH passes, the terminal detects the PDCCH and presets at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) in a DRX period after energy saving PDCCH DMRS. If the cyclic redundancy check code CRC of the energy-saving PDCCH fails, the terminal does not perform PDCCH detection, a DRX duration timer does not count, and neither the channel state information CSI nor the channel sounding reference signal SRS is triggered in a DRX period after the energy-saving PDCCH DMRS.
As an alternative embodiment, step 13 comprises:
and if the detection value of the DMRS is larger than a preset threshold value, the terminal performs PDCCH detection in at least one subsequent discontinuous reception DRX period.
As yet another alternative, step 13 comprises:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH passes, the terminal detects the PDCCH in at least one subsequent Discontinuous Reception (DRX) cycle.
As another alternative, step 13 comprises:
and if the detection value of the DMRS is larger than a preset threshold value and the CRC of the energy-saving PDCCH passes, the terminal performs PDCCH detection in at least one subsequent discontinuous reception DRX period.
As another alternative, the terminal may perform PDCCH DMRS detection and perform PDCCH blind detection, and step 13 includes:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH fails and the detection value of the DMRS is larger than a preset threshold value, presetting at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) in a DRX period after energy saving PDCCH DMRS.
Further, step 13 may further include:
if the Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH fails, in a DRX period after energy saving PDCCH DMRS, the terminal performs PDCCH detection and performs preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS);
alternatively, step 13 comprises:
if the detection value of the DMRS is larger than the preset threshold value, in a DRX period after energy saving PDCCH DMRS, the terminal performs PDCCH detection and performs preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS).
For example, if the detection value of the DMRS is greater than a preset threshold value, or the CRC check of the energy-saving PDCCH passes, the terminal performs PDCCH detection in a DRX cycle after energy saving PDCCH DMRS, or performs preset processing on at least one of a DRX duration timer, a channel state information CSI, and a channel sounding reference signal SRS.
For another example, if the detection value of the DMRS is not greater than the preset value and the CRC check of the CRC of the energy-saving PDCCH fails, the PDCCH is not detected, and the DRX duration timer is not started, the CSI report and the SRS transmission are not triggered.
For another example, if the detection value of the DMRS is greater than a preset value and the CRC check of the CRC of the energy-saving PDCCH is passed, the PDCCH is detected, the DRX duration timer is started, and the CSI report and the SRS transmission are performed according to the NR standard.
Since the false alarm probability (e.g., 1%) of detection according to the DMRS is higher than that of PDCCH detection, if the DMRS detects that the energy-saving PDCCH is transmitted, the network side does not actually transmit the energy-saving PDCCH. When false alarm occurs, if the user reports the CSI in the DRX cycle indicated by the energy-saving PDCCH, or sends the SRS, the SRS collides with data scheduled by the base station on the same resource. In consideration of the situation, the terminal in the embodiment of the present invention performs PDCCH detection related operation in the DRX cycle indicated by the energy-saving PDCCH, and when the user detects that PDCCH transmission exists, it indicates that the user wakes up in the energy-saving PDCCH before the DRX cycle, and the DMRS does not falsely alarm, the periodic and semi-persistent CSI may be reported at a subsequent time. When a user detects that there is PDCCH transmission, the system starts a DRX deactivation timer (DRX-inactivity timer), and the terminal can only start the DRX deactivation timer for CSI reporting.
In the embodiment of the invention, the DMRS detection result indicates that the energy-saving PDCCH exists, but the CRC of the energy-saving PDCCH fails, which is also called as the condition that the DMRS detection result is inconsistent with the energy-saving PDCCH detection result; in view of the above situation, the embodiments of the present invention provide a subsequent correlation process, including: in a DRX cycle after power saving PDCCH DMRS, the terminal performs PDCCH detection and performs a preset process on at least one of a DRX duration timer, CSI, and SRS. The detection method of the PDCCH provided by the embodiment of the invention can reduce the missed detection probability of the PDCCH, avoid the problem of resource conflict caused by CSI reporting and SRS sending when the DMRS detects false alarm, and simultaneously ensure that the CSI information is reported in time.
Optionally, step 12 in the above embodiment of the present invention includes:
if the detection value of the DMRS is larger than a preset threshold value, performing energy-saving PDCCH blind test; otherwise, the energy-saving PDCCH blind detection is not carried out.
As an optional embodiment, the step 13 of performing PDCCH detection by the terminal includes:
the terminal detects the PDCCH scrambled by the target identifier; wherein the target identification comprises at least one of:
a cell-radio network temporary identity (C-RNTI);
configuring a scheduling-radio network temporary identifier (CS-RNTI);
interrupting the wireless-network temporary identifier INT-RNTI;
time slot format indication-radio network temporary identity SFI-RNTI;
semi-persistent-channel state information-radio network temporary identity SP-CSI-RNTI;
transmitting power control-physical uplink control channel-radio network temporary identifier TPC-PUCCH-RNTI;
transmitting power control-physical uplink shared channel-radio network temporary identifier TPC-PUSCH-RNTI;
transmitting power control-channel sounding reference signal-radio network temporary identity TPC-SRS-RNTI.
It should be noted that, the embodiments of the present invention provide various ways to perform preset processing on at least one of the DRX duration timer, the channel state information CSI, and the channel sounding reference signal SRS, which are described below respectively.
The first method is as follows: namely, the preset processing is performed on at least one of the DRX duration timer (DRX-onDurationTimer), the CSI, and the SRS, and includes:
starting the DRX duration timer; if the CSI mask (CSI-mask) is 1, the terminal does not report the CSI within the time corresponding to the DRX activation period; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the operation of a DRX deactivation timer (DRX-inactivetytimer);
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the operation of the DRX deactivation timer.
The reporting of CSI in this manner includes: and reporting the periodic CSI and/or reporting the semi-continuous CSI.
Optionally, in the embodiment of the present invention, when the CSI-mask is 1, CSI reporting is not allowed; and when the CSI-mask is 0, only allowing CSI reporting within the time corresponding to the operation of the DRX deactivation timer. Or, the embodiment of the present invention only allows the SRS to be transmitted within a time corresponding to the operation of the DRX deactivation timer.
The method can reduce the false detection probability of the PDCCH, and the CSI report utilizes drx-InactivityTimer, adopts a simpler method, avoids resource conflict caused by the fact that the CSI is reported by the DMRS detection false alarm, and can report the CSI information in time.
The second method comprises the following steps: namely, the preset processing of at least one of the DRX duration timer, the CSI and the CSI comprises:
starting the DRX duration timer, and if the CSI mask is 1, reporting the CSI by the terminal within the time corresponding to the operation of the DRX duration timer; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the DRX activation period.
The reporting of CSI in this manner includes: and reporting the periodic CSI and/or reporting the semi-continuous CSI.
Optionally, in the embodiment of the present invention, when the CSI-mask is 1, the CSI report is allowed to be performed within a time corresponding to the operation of the DRX duration timer; and when the CSI-mask is 0, allowing CSI reporting in the time corresponding to the DRX activation period. Or, the embodiment of the present invention only allows SRS transmission in the time corresponding to the DRX active period.
The method can reduce the false detection probability of the PDCCH, has small influence on the standard, and is suitable for the condition of low DMRS false alarm probability.
The third method comprises the following steps: namely, the preset processing of at least one of the DRX duration timer, the CSI and the CSI comprises:
starting the DRX duration timer, and the terminal does not report CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and the terminal does not transmit SRS in the time corresponding to the DRX active period.
In the embodiment of the invention, the terminal only carries out PDCCH detection in the DRX activation period and does not carry out CSI reporting and SRS transmission.
The method can reduce the false detection probability of the PDCCH, has small influence on the standard, is very simple to realize, and can schedule the user to transmit the non-periodic CSI for the periodic CSI and/or the semi-continuous CSI which cannot be reported in the DRX activation period, thereby obtaining the CSI information.
The method is as follows: namely, the preset processing of at least one of the DRX duration timer, the CSI and the CSI comprises:
and the DRX duration timer is not started, the media intervention control MAC layer of the terminal does not start the reporting of the CSI and the transmission of the SRS according to the DRX duration timer, and the physical layer of the terminal maintains the timer in the DRX period according to the DRX parameters configured by the high layer. The timer is maintained to ensure that the terminal can enter a sleep state when there is no PDCCH transmission.
Optionally, the timer in the DRX cycle includes, but is not limited to, the following timers:
a DRX duration timer (DRX-onDurationTimer); a DRX deactivation timer (DRX-inactivity timer); a DRX downlink retransmission timer (DRX-retransmission timerdl); DRX uplink retransmission timer (DRX-retransmission timer ul); DRX short cycle timer (DRX-ShortCycleTimer); DRX-hybrid automatic repeat-timing advance-downlink timer (DRX-HARQ-RTT-TimerDL); DRX-hybrid automatic retransmission-timing advance-uplink timer (DRX-HARQ-RTT-timerll).
In the method, reporting of CSI is controlled by a drx-onDurationTimer, so that the false detection probability of the PDCCH is reduced, the high-level standard is not modified, a physical layer is required to maintain a plurality of timers, and the realization complexity of the physical layer is used for replacing the high-level simplification.
It should be noted that the "time corresponding to the DRX active period" mentioned in the embodiments of the present invention is not completely equivalent to the DRX active period, and may be understood as a time related to the DRX active period, for example, the "time corresponding to the DRX active period" includes: a time period with an offset from the DRX active period; for another example, the "time corresponding to the DRX active period" includes: a DRX active period, a period of time before a start time of the DRX active period, a period of time after an end time of the DRX active period; not to mention here. Likewise, the "DRX duration timer running corresponding time" mentioned in the embodiments of the present invention is not completely equivalent to the DRX duration timer running time, and can be understood as a time related to the DRX duration timer running time.
In conclusion, the embodiment of the invention solves the problem that the energy-saving PDCCH fails to detect due to the missed detection of the PDCCH through the DMRS detection with high reliability; further considering that when the energy-saving PDCCH detection result is inconsistent with the DMRS detection result, subsequent CSI reporting and SRS sending related processing are carried out; the embodiment of the invention utilizes the drx-InactivityTimer and adopts a simpler method, thereby avoiding the problem of resource conflict caused by CSI reporting and SRS sending when the DMRS detects false alarms, and being capable of reporting the CSI information in time.
As shown in fig. 2, an embodiment of the present invention further provides a detection apparatus for a physical downlink control channel PDCCH, which is applied to a terminal, and includes:
a first detection module 21, configured to perform detection of a demodulation reference signal DMRS on a PDCCH detection opportunity configured by a network side device;
a second detection module 22, configured to perform energy-saving PDCCH blind detection;
a processing module 23, configured to perform PDCCH detection in at least one subsequent DRX cycle according to the detection result of the DMRS or the blind detection result of the energy-saving PDCCH; and/or performing preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to the detection result of the DMRS and/or the blind detection result of the energy-saving PDCCH.
Optionally, in the above embodiment of the present invention, the second detecting module is further configured to:
if the detection value of the DMRS is larger than a preset threshold value, performing energy-saving PDCCH blind test; otherwise, the energy-saving PDCCH blind detection is not carried out.
Optionally, in the foregoing embodiment of the present invention, the processing module includes:
and the first processing unit is used for detecting the PDCCH by the terminal in at least one subsequent Discontinuous Reception (DRX) cycle if the detection value of the DMRS is larger than a preset threshold value.
Optionally, in the foregoing embodiment of the present invention, the processing module includes:
and the second processing unit is used for detecting the PDCCH by the terminal in at least one subsequent Discontinuous Reception (DRX) cycle if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH passes the check.
Optionally, in the foregoing embodiment of the present invention, the processing module includes:
and a third processing unit, configured to perform preset processing on at least one of a DRX duration timer, channel state information CSI, and a channel sounding reference signal SRS in a DRX cycle after energy saving PDCCH DMRS if a CRC check of the energy saving PDCCH fails and a detection value of the DMRS is greater than a preset threshold.
Optionally, in the foregoing embodiment of the present invention, the terminal further includes:
the first detection submodule is used for detecting the PDCCH scrambled by the target identifier by the terminal; wherein the target identification comprises at least one of:
a cell-radio network temporary identity (C-RNTI);
configuring a scheduling-radio network temporary identifier (CS-RNTI);
interrupting the wireless-network temporary identifier INT-RNTI;
time slot format indication-radio network temporary identity SFI-RNTI;
semi-persistent-channel state information-radio network temporary identity SP-CSI-RNTI;
transmitting power control-physical uplink control channel-radio network temporary identifier TPC-PUCCH-RNTI;
transmitting power control-physical uplink shared channel-radio network temporary identifier TPC-PUSCH-RNTI;
transmitting power control-channel sounding reference signal-radio network temporary identity TPC-SRS-RNTI.
Optionally, in the foregoing embodiment of the present invention, the terminal further includes:
a first processing submodule, configured to start the DRX duration timer; if the CSI mask is 1, the terminal does not report the CSI within the time corresponding to the DRX activation period; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the operation of the DRX deactivation timer;
or, the terminal is configured to start the DRX duration timer, and perform SRS transmission within a time corresponding to the operation of the DRX deactivation timer.
Optionally, in the foregoing embodiment of the present invention, the terminal further includes:
the second processing submodule is used for starting the DRX duration timer, and if the CSI mask is 1, the terminal reports the CSI within the time corresponding to the operation of the DRX duration timer; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the DRX activation period;
or, the terminal is configured to start the DRX duration timer, and perform SRS transmission within a time corresponding to the DRX active period.
Optionally, in the foregoing embodiment of the present invention, the terminal further includes:
a third processing submodule, configured to start the DRX duration timer, where the terminal does not report CSI in a time corresponding to a DRX active period;
or, the terminal is configured to start the DRX duration timer, and the terminal does not perform SRS transmission within a time corresponding to a DRX active period.
Optionally, in the foregoing embodiment of the present invention, the terminal further includes:
and the fourth processing submodule is used for not starting the DRX duration timer, the media intervention control MAC layer of the terminal does not start the reporting of the CSI and the transmission of the SRS according to the DRX duration timer, and the physical layer of the terminal maintains the timer in the DRX period according to the DRX parameters configured by the high layer.
In conclusion, the embodiment of the invention solves the problem that the energy-saving PDCCH fails to detect due to the missed detection of the PDCCH through the DMRS detection with high reliability; further considering that when the energy-saving PDCCH detection result is inconsistent with the DMRS detection result, subsequent CSI reporting and SRS sending related processing are carried out; the embodiment of the invention utilizes the drx-InactivityTimer and adopts a simpler method, thereby avoiding the problem of resource conflict caused by CSI reporting and SRS sending when the DMRS detects false alarms, and being capable of reporting the CSI information in time.
It should be noted that the detection apparatus for a physical downlink control channel PDCCH according to the embodiments of the present invention is an apparatus capable of executing the detection method for the physical downlink control channel PDCCH, and all embodiments of the detection method for the physical downlink control channel PDCCH are applicable to the apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 3, an embodiment of the present invention further provides a terminal, including: a transceiver 320, a memory 310, a processor 300 and a computer program stored on the memory 310 and executable on the processor 300, the transceiver 320 receiving and transmitting data under the control of the processor 300, the processor 300 reading the program in the memory 310 and performing the following operations:
detecting a demodulation reference signal (DMRS) on a PDCCH detection opportunity configured by network side equipment;
performing energy-saving PDCCH blind detection;
performing PDCCH detection in at least one subsequent Discontinuous Reception (DRX) cycle according to the detection result of the DMRS or the blind detection result of the energy-saving PDCCH; and/or performing preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to the detection result of the DMRS and/or the blind detection result of the energy-saving PDCCH.
Optionally, in the above embodiment of the present invention, the processor 300 is configured to read a program in the memory 310, and perform the following operations:
if the detection value of the DMRS is larger than a preset threshold value, performing energy-saving PDCCH blind test; otherwise, the energy-saving PDCCH blind detection is not carried out.
Optionally, in the above embodiment of the present invention, the processor 300 is configured to read a program in the memory 310, and perform the following operations:
and if the detection value of the DMRS is larger than a preset threshold value, the terminal performs PDCCH detection in at least one subsequent discontinuous reception DRX period.
Optionally, in the above embodiment of the present invention, the processor 300 is configured to read a program in the memory 310, and perform the following operations:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH passes, the terminal detects the PDCCH in at least one subsequent Discontinuous Reception (DRX) cycle.
Optionally, in the above embodiment of the present invention, the processor 300 is configured to read a program in the memory 310, and perform the following operations:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH fails and the detection value of the DMRS is larger than a preset threshold value, presetting at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) in a DRX period after energy saving PDCCH DMRS.
Optionally, in the above embodiment of the present invention, the processor 300 is configured to read a program in the memory 310, and perform the following operations:
the terminal detects the PDCCH scrambled by the target identifier; wherein the target identification comprises at least one of:
a cell-radio network temporary identity (C-RNTI);
configuring a scheduling-radio network temporary identifier (CS-RNTI);
interrupting the wireless-network temporary identifier INT-RNTI;
time slot format indication-radio network temporary identity SFI-RNTI;
semi-persistent-channel state information-radio network temporary identity SP-CSI-RNTI;
transmitting power control-physical uplink control channel-radio network temporary identifier TPC-PUCCH-RNTI;
transmitting power control-physical uplink shared channel-radio network temporary identifier TPC-PUSCH-RNTI;
transmitting power control-channel sounding reference signal-radio network temporary identity TPC-SRS-RNTI.
Optionally, in the above embodiment of the present invention, the processor 300 is configured to read a program in the memory 310, and perform the following operations:
starting the DRX duration timer; if the CSI mask is 1, the terminal does not report the CSI within the time corresponding to the DRX activation period; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the operation of the DRX deactivation timer;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the operation of the DRX deactivation timer.
Optionally, in the above embodiment of the present invention, the processor 300 is configured to read a program in the memory 310, and perform the following operations:
starting the DRX duration timer, and if the CSI mask is 1, reporting the CSI by the terminal within the time corresponding to the operation of the DRX duration timer; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the DRX activation period.
Optionally, in the above embodiment of the present invention, the processor 300 is configured to read a program in the memory 310, and perform the following operations:
starting the DRX duration timer, and the terminal does not report CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and the terminal does not transmit SRS in the time corresponding to the DRX active period.
Optionally, in the above embodiment of the present invention, the processor 300 is configured to read a program in the memory 310, and perform the following operations:
and the DRX duration timer is not started, the media intervention control MAC layer of the terminal does not start the reporting of the CSI and the transmission of the SRS according to the DRX duration timer, and the physical layer of the terminal maintains the timer in the DRX period according to the DRX parameters configured by the high layer.
The embodiment of the invention also provides a terminal, and as the principle of solving the problem of the terminal is similar to the detection method of the physical downlink control channel PDCCH in the embodiment of the invention, the implementation of the terminal can refer to the implementation of the method, and repeated parts are not repeated.
In conclusion, the embodiment of the invention solves the problem that the energy-saving PDCCH fails to detect due to the missed detection of the PDCCH through the DMRS detection with high reliability; further considering that when the energy-saving PDCCH detection result is inconsistent with the DMRS detection result, subsequent CSI reporting and SRS sending related processing are carried out; the embodiment of the invention utilizes the drx-InactivityTimer and adopts a simpler method, thereby avoiding the problem of resource conflict caused by CSI reporting and SRS sending when the DMRS detects false alarms, and being capable of reporting the CSI information in time.
It should be noted that, the terminal provided in the embodiments of the present invention is a terminal capable of executing the method for detecting a physical downlink control channel PDCCH, and all embodiments of the method for detecting a physical downlink control channel PDCCH are applicable to the terminal and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process of the above-described embodiment of the method for detecting a physical downlink control channel PDCCH, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (24)

1. A method for detecting a Physical Downlink Control Channel (PDCCH) is applied to a terminal, and is characterized by comprising the following steps:
detecting a demodulation reference signal (DMRS) on a PDCCH detection opportunity configured by network side equipment;
performing energy-saving PDCCH blind detection;
performing PDCCH detection in at least one subsequent discontinuous reception DRX period according to whether the detection value of the DMRS is larger than a preset threshold value or whether the CRC check of the energy-saving PDCCH is passed; and/or presetting at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to whether the detection value of the DMRS is larger than a preset threshold value and/or whether the Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH passes.
2. The method of claim 1, wherein the performing the energy-saving PDCCH blind detection comprises:
if the detection value of the DMRS is larger than a preset threshold value, performing energy-saving PDCCH blind test; otherwise, the energy-saving PDCCH blind detection is not carried out.
3. The method of claim 1, wherein performing PDCCH detection in at least one subsequent DRX cycle according to whether the detection value of the DMRS is greater than a preset threshold value comprises:
and if the detection value of the DMRS is larger than a preset threshold value, the terminal performs PDCCH detection in at least one subsequent discontinuous reception DRX period.
4. The method of claim 1, wherein performing PDCCH detection in at least one subsequent DRX cycle according to whether a CRC check of the energy-saving PDCCH passes comprises:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH passes, the terminal detects the PDCCH in at least one subsequent Discontinuous Reception (DRX) cycle.
5. The method of claim 1, wherein performing a predetermined process on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to whether a detection value of the DMRS is greater than a predetermined threshold value or whether a Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH is passed comprises:
if the Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH fails, in a DRX period after energy saving PDCCH DMRS, the terminal performs PDCCH detection and performs preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS);
alternatively, the first and second electrodes may be,
if the detection value of the DMRS is larger than the preset threshold value, in a DRX period after energy saving PDCCH DMRS, the terminal performs PDCCH detection and performs preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS).
6. The method of claim 1, wherein the pre-setting at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to whether a detection value of the DMRS is greater than a pre-set threshold value and whether a Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH passes comprises:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH fails and the detection value of the DMRS is larger than a preset threshold value, presetting at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) in a DRX period after energy saving PDCCH DMRS.
7. The method according to claim 3 or 4, wherein the terminal performs PDCCH detection, and comprises:
the terminal detects the PDCCH scrambled by the target identifier; wherein the target identification comprises at least one of:
a cell-radio network temporary identity (C-RNTI);
configuring a scheduling-radio network temporary identifier (CS-RNTI);
interrupting the wireless-network temporary identifier INT-RNTI;
time slot format indication-radio network temporary identity SFI-RNTI;
semi-persistent-channel state information-radio network temporary identity SP-CSI-RNTI;
transmitting power control-physical uplink control channel-radio network temporary identifier TPC-PUCCH-RNTI;
transmitting power control-physical uplink shared channel-radio network temporary identifier TPC-PUSCH-RNTI;
transmitting power control-channel sounding reference signal-radio network temporary identity TPC-SRS-RNTI.
8. The method according to claim 5 or 6, wherein the pre-setting at least one of the DRX duration timer, the Channel State Information (CSI) and the channel Sounding Reference Signal (SRS) comprises:
starting the DRX duration timer; if the CSI mask is 1, the terminal does not report the CSI within the time corresponding to the DRX activation period; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the operation of the DRX deactivation timer;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the operation of the DRX deactivation timer.
9. The method according to claim 5 or 6, wherein the pre-setting at least one of the DRX duration timer, the CSI and the CSI RS comprises:
starting the DRX duration timer, and if the CSI mask is 1, reporting the CSI by the terminal within the time corresponding to the operation of the DRX duration timer; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the DRX activation period.
10. The method according to claim 5 or 6, wherein the pre-setting at least one of the DRX duration timer, the CSI and the CSI RS comprises:
starting the DRX duration timer, and the terminal does not report CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and the terminal does not transmit SRS in the time corresponding to the DRX active period.
11. The method according to claim 5 or 6, wherein the pre-setting at least one of the DRX duration timer, the CSI and the CSI RS comprises:
and the DRX duration timer is not started, the media intervention control MAC layer of the terminal does not start the reporting of the CSI and the transmission of the SRS according to the DRX duration timer, and the physical layer of the terminal maintains the timer in the DRX period according to the DRX parameters configured by the high layer.
12. A detection device of a Physical Downlink Control Channel (PDCCH) is applied to a terminal, and is characterized by comprising the following components:
the first detection module is used for detecting a demodulation reference signal (DMRS) on a PDCCH detection opportunity configured by network side equipment;
the second detection module is used for carrying out energy-saving PDCCH blind detection;
the processing module is used for carrying out PDCCH detection in at least one subsequent Discontinuous Reception (DRX) cycle according to whether the detection value of the DMRS is larger than a preset threshold value or whether the Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH passes; and/or presetting at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to whether the detection value of the DMRS is larger than a preset threshold value and/or whether the Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH passes.
13. A terminal, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the transceiver receives and transmits data under control of a processor, the processor being configured to read a program in a memory and perform the following operations:
detecting a demodulation reference signal (DMRS) on a PDCCH detection opportunity configured by network side equipment;
performing energy-saving PDCCH blind detection;
performing PDCCH detection in at least one subsequent discontinuous reception DRX period according to whether the detection value of the DMRS is larger than a preset threshold value or whether the CRC check of the energy-saving PDCCH is passed; and/or presetting at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) according to whether the detection value of the DMRS is larger than a preset threshold value and/or whether the Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH passes.
14. The terminal of claim 13, wherein the processor is configured to read a program stored in the memory and perform the following operations:
if the detection value of the DMRS is larger than a preset threshold value, performing energy-saving PDCCH blind test; otherwise, the energy-saving PDCCH blind detection is not carried out.
15. The terminal of claim 13, wherein the processor is configured to read a program stored in the memory and perform the following operations:
and if the detection value of the DMRS is larger than a preset threshold value, the terminal performs PDCCH detection in at least one subsequent discontinuous reception DRX period.
16. The terminal of claim 13, wherein the processor is configured to read a program stored in the memory and perform the following operations:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH passes, the terminal detects the PDCCH in at least one subsequent Discontinuous Reception (DRX) cycle.
17. The terminal of claim 13, wherein the processor is configured to read a program stored in the memory and perform the following operations:
if the Cyclic Redundancy Check (CRC) check of the energy-saving PDCCH fails, in a DRX period after energy saving PDCCH DMRS, the terminal performs PDCCH detection and performs preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS);
alternatively, the first and second electrodes may be,
if the detection value of the DMRS is larger than the preset threshold value, in a DRX period after energy saving PDCCH DMRS, the terminal performs PDCCH detection and performs preset processing on at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS).
18. The terminal of claim 13, wherein the processor is configured to read a program stored in the memory and perform the following operations:
and if the Cyclic Redundancy Check (CRC) of the energy-saving PDCCH fails and the detection value of the DMRS is larger than a preset threshold value, presetting at least one of a DRX duration timer, Channel State Information (CSI) and a channel Sounding Reference Signal (SRS) in a DRX period after energy saving PDCCH DMRS.
19. A terminal according to claim 14 or 15, wherein the processor is configured to read a program in the memory and to:
the terminal detects the PDCCH scrambled by the target identifier; wherein the target identification comprises at least one of:
a cell-radio network temporary identity (C-RNTI);
configuring a scheduling-radio network temporary identifier (CS-RNTI);
interrupting the wireless-network temporary identifier INT-RNTI;
time slot format indication-radio network temporary identity SFI-RNTI;
semi-persistent-channel state information-radio network temporary identity SP-CSI-RNTI;
transmitting power control-physical uplink control channel-radio network temporary identifier TPC-PUCCH-RNTI;
transmitting power control-physical uplink shared channel-radio network temporary identifier TPC-PUSCH-RNTI;
transmitting power control-channel sounding reference signal-radio network temporary identity TPC-SRS-RNTI.
20. A terminal according to claim 16 or 17, wherein the processor is configured to read a program in the memory and perform the following operations:
starting the DRX duration timer; if the CSI mask is 1, the terminal does not report the CSI within the time corresponding to the DRX activation period; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the operation of the DRX deactivation timer;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the operation of the DRX deactivation timer.
21. A terminal according to claim 16 or 17, wherein the processor is configured to read a program in the memory and perform the following operations:
starting the DRX duration timer, and if the CSI mask is 1, reporting the CSI by the terminal within the time corresponding to the operation of the DRX duration timer; if the CSI mask is 0, the terminal reports the CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and transmitting the SRS by the terminal within the time corresponding to the DRX activation period.
22. A terminal according to claim 16 or 17, wherein the processor is configured to read a program in the memory and perform the following operations:
starting the DRX duration timer, and the terminal does not report CSI within the time corresponding to the DRX activation period;
alternatively, the first and second electrodes may be,
and starting the DRX duration timer, and the terminal does not transmit SRS in the time corresponding to the DRX active period.
23. A terminal according to claim 16 or 17, wherein the processor is configured to read a program in the memory and perform the following operations:
and the DRX duration timer is not started, the media intervention control MAC layer of the terminal does not start the reporting of the CSI and the transmission of the SRS according to the DRX duration timer, and the physical layer of the terminal maintains the timer in the DRX period according to the DRX parameters configured by the high layer.
24. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for detecting a physical downlink control channel, PDCCH, according to any one of claims 1 to 11.
CN201910941785.5A 2019-08-15 2019-09-30 Method and device for detecting Physical Downlink Control Channel (PDCCH) and terminal Active CN112398578B (en)

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