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CN110324916B - DCI detection method, user terminal and computer readable storage medium - Google Patents

DCI detection method, user terminal and computer readable storage medium Download PDF

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Publication number
CN110324916B
CN110324916B CN201810288212.2A CN201810288212A CN110324916B CN 110324916 B CN110324916 B CN 110324916B CN 201810288212 A CN201810288212 A CN 201810288212A CN 110324916 B CN110324916 B CN 110324916B
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dci
format information
time
slot format
detection
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CN110324916A (en
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邓云
黄甦
顾祥新
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] 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
    • 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
    • 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
    • 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)
  • Mobile Radio Communication Systems (AREA)

Abstract

A DCI detection method, a user terminal and a computer-readable storage medium are provided. The method comprises the following steps: judging whether DCI of the time slot format information needs to be detected in the inactive time of the current DRX period or not; when the DCI of the slot format information needs to be detected in the inactive time of the current DRX period, determining the detection slot of the DCI of the slot format information which is the latest time away from the duration of the next DRX period; and according to the determined detection time slot, executing the detection of the DCI of the time slot format information to obtain the latest time slot format information. By applying the scheme, the power consumption of the UE can be reduced while the latest time slot format information is obtained.

Description

DCI detection method, user terminal and computer readable storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a DCI detection method, a user terminal, and a computer-readable storage medium.
Background
In the fifth generation mobile communication technology (5G) (or referred to as New Radio access technology, NR), a base station schedules a User Equipment (UE) through Downlink Control Information (DCI).
Specifically, the DCI may indicate an uplink Grant (UL Grant) or a downlink Assignment (DL Assignment). And the UE sends data to the base station according to the allocated transmission resources in the appointed time slot according to the uplink authorization. And the Downlink assignment is used to indicate to the user terminal the data transmitted on the Physical Downlink Shared Channel (PDSCH). At this time, the DCI needs to indicate a modulation coding format of data transmission, occupied time-frequency resources of the PDSCH, and the like. And the UE receives the downlink data at the designated position according to the DCI information and feeds back ACK (acknowledgement) or NACK (non-acknowledgement) according to the receiving state. The DCI may also indicate power control information or indicate slot format information to the UE.
Generally, a UE in a connected state needs to continuously monitor DCI, and a base station may configure a period for monitoring DCI, so that the UE may monitor DCI periodically. The UE knows whether it is a DCI according to its Radio Network Temporary Identity (RNTI). There are various formats (formats) for the UE to listen to the DCI, such as DCI Format 0_0, 1_0, 2_0, and so on. The base station can configure different parameters such as DCI search space, detection period and the like for different DCI formats. For DCI format 2_0 (DCI of slot format information for short), the base station is configured to notify the UE of the slot format information. The UE processes the reception/transmission of signaling and data and the detection of reference signals according to the detected slot format information.
To save power, the base station configures a Discontinuous Reception (DRX) cycle for the UE. During the inactive time of the DRX cycle, the UE generally does not receive the DCI format 2_0 for power saving, which results in the UE not being able to obtain the latest DCI format 2_0, and eventually affects signaling and data transmission.
Disclosure of Invention
The problem to be solved by the invention is how to reduce the power consumption of the UE while obtaining the latest time slot format information.
In order to solve the above problem, an embodiment of the present invention provides a method for detecting DCI, where the method includes: judging whether DCI of the time slot format information needs to be detected in the inactive time of the current DRX period or not; when the DCI of the slot format information needs to be detected in the inactive time of the current DRX period, determining the detection slot of the DCI of the slot format information which is the latest time away from the duration of the next DRX period; and according to the determined detection time slot, executing the detection of the DCI of the time slot format information to obtain the latest time slot format information.
Optionally, the determining whether DCI of slot format information needs to be detected within an inactive time of a current DRX cycle includes: and judging whether the DCI of the time slot format information needs to be detected in the non-active time of the current DRX cycle or not by judging whether the duration of the next DRX cycle contains the detection time slot of the DCI of the time slot format information or not.
Optionally, the determining whether DCI of slot format information needs to be detected within an inactive time of a current DRX cycle includes: and judging whether the DCI of the slot format information needs to be detected in the inactive time of the current DRX cycle or not by judging whether the variable time slot exists in the duration of the next DRX cycle or not and whether the detection time slot of the DCI of the slot format information is positioned behind at least one variable time slot or not.
Optionally, the determining whether DCI of slot format information needs to be detected within an inactive time of a current DRX cycle includes: and judging whether the DCI of the time slot format information needs to be detected in the inactive time of the current DRX period or not based on the DCI detection indication information sent by the base station.
Optionally, when the base station includes a DCI detection slot of the slot format information within the duration of the next DRX cycle, the base station indicates, through the DCI detection indication information, that the UE does not need to detect the DCI of the slot format information within the inactive time of the current DRX cycle.
Optionally, the base station sends the DCI detection indication information to the UE through RRC signaling.
Optionally, the method further comprises: and when the DCI of the slot format information does not need to be detected in the inactive time of the current DRX period, obtaining the latest slot format information from the DCI of the last detected slot format information.
Optionally, the method further comprises: detecting a reference signal within the determined detection time slot; and performing channel state evaluation according to the detected reference signal, and reporting an evaluation result in the next DRX period activation time.
An embodiment of the present invention further provides a user terminal, where the user terminal includes: a judging unit adapted to judge whether DCI of slot format information needs to be detected within an inactive time of a current DRX cycle; a time slot determining unit, adapted to determine a detection time slot of DCI of the time slot format information which is the latest time from the duration of the next DRX cycle when the DCI of the time slot format information needs to be detected within the inactive time of the current DRX cycle; and the first DCI detection unit is suitable for detecting the DCI of the time slot format information according to the determined detection time slot to obtain the latest time slot format information.
Optionally, the determining unit is adapted to determine whether DCI of slot format information needs to be detected in the inactive time of the current DRX cycle by determining whether a detection slot of DCI of slot format information is included in the duration of the next DRX cycle.
Optionally, the determining unit is adapted to determine whether DCI of slot format information needs to be detected in the inactive time of the current DRX cycle by determining whether a variable slot exists in the duration of the next DRX cycle and whether a detection slot of DCI of slot format information is located after at least one variable slot.
Optionally, the determining unit is adapted to determine whether DCI of slot format information needs to be detected in the inactive time of the current DRX cycle based on DCI detection indication information sent by the base station.
Optionally, the DCI detection indication information is adapted to indicate that the UE does not need to detect the DCI of the slot format information in the inactive time of the current DRX cycle when detecting the slot of the DCI including the slot format information in the duration of the next DRX cycle.
Optionally, the DCI detection indication information is sent through RRC signaling.
Optionally, the user terminal further includes: and the second DCI detection unit is suitable for obtaining the latest time slot format information from the DCI of the last detected time slot format information when the DCI of the time slot format information does not need to be detected in the inactive time of the current DRX period.
Optionally, the user terminal further includes: a reference signal detection unit adapted to detect a reference signal within the determined detection time slot; and the channel state evaluation unit is suitable for carrying out channel state evaluation according to the detected reference signal and reporting an evaluation result in the next DRX period activation time.
The embodiment of the present invention further provides a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed, the method for detecting DCI according to any one of the above-mentioned steps is performed.
The embodiment of the present invention further provides a user terminal, which includes a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes any of the above steps of the DCI detection method when running the computer instruction.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following advantages:
by adopting the scheme, whether the DCI of the time slot format information needs to be detected in the inactive time of the current DRX period is judged, if so, the detection time slot of the DCI of the time slot format information which is the latest time slot format information from the duration of the next DRX period is determined, and the detection of the DCI of the time slot format information is executed according to the determined detection time slot, so that the latest time slot format information can be obtained. In addition, the UE does not need to wake up frequently at the DRX inactive time to detect the DCI of the time slot format information, so that the power consumption of the UE can be effectively reduced.
Drawings
Fig. 1 is a flowchart of a DCI detection method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of determining a DCI detection slot according to an embodiment of the present invention;
fig. 3 is a flowchart of another DCI detection method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a user terminal according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another ue in the embodiment of the present invention.
Detailed Description
In actual communication, the base station may indicate some variable time slots (Flexible) to the UE through RRC signaling or system message in advance. For example, which slots are variable slots in a radio frame (10ms), or which symbols (symbols) in which slots are variable, and then the base station informs the UE through DCI format 2_0 whether the variable slots are downlink or uplink, or which symbols in the slots are downlink or uplink.
In a certain variable time slot, if the UE is configured by a higher layer before to need PDSCH reception, but if the UE does not receive DCI format 2_0, the UE does not need to receive PDSCH data (i.e., downlink data transmitted through PDSCH) in the time slot. In a certain variable time slot, if the UE is configured by the base station to need to detect DCI, the UE needs to detect DCI in the corresponding search space in the time slot only when the UE receives DCI format 2_0 and the DCI indicates that the variable time slot is downlink.
Therefore, accurate reception of DCI format 2_0 is crucial to UE communication.
Currently, the DRX cycle configured by the base station for the UE may include two parts: active Time (Active Time) and inactive Time. The UE detects the DCI format 2_0 only in the active time, and does not detect the DCI format 2_0 in the inactive time, so that the UE cannot obtain the latest slot format information, which is not favorable for the UE to receive the signal at the active time T1.
In view of the above problems, embodiments of the present invention provide a DCI detection method, where the method may first determine whether DCI of slot format information needs to be detected within an inactive time of a current DRX cycle, and if so, first determine a detection slot of DCI of slot format information closest to a duration of a next DRX cycle, and perform DCI detection of slot format information according to the determined detection slot, so as to obtain latest slot format information. In addition, the UE does not need to wake up frequently at the DRX inactive time to detect the DCI of the time slot format information, so that the power consumption of the UE can be effectively reduced.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides a method for detecting DCI, where the method may include the following steps:
step 11, determining whether DCI of slot format information needs to be detected within the inactive time of the current DRX cycle.
In an implementation, for a connected UE, the base station configures the UE with a DRX cycle, typically for power saving. The DRX cycle is variable, for example, the DRX cycle configured by the base station to the UE may be 10ms, 20ms, 40ms, 64ms, or 256 ms. The longer the DRX cycle and the shorter the activation time (e.g., the shorter the duration), the more significant the power saving effect.
The UE needs to detect DCI for the duration of each DRX cycle (OnDuration), the duration of which is controlled by a duration timer (DRX-onDurationTimer), and the UE is active for a duration that is greater than or equal to the duration of the duration.
If the UE detects its DCI, for example, needs to receive downlink data, the UE needs to restart a non-active time timer (DRX-inactivity timer), and the active time of the UE in the DRX cycle may need to be extended, so that the UE can send feedback information of the downlink data to the base station and receive the downlink data retransmitted by the base station when the feedback is not received correctly. If no DCI is detected within the duration, the UE enters the inactive time of DRX when the duration timer is overtime, and in this scenario, the active time is equal to the duration of the duration.
In a specific implementation, in order to implement reasonable resource allocation for uplink and downlink data transmission, the base station configures the UE to detect the DCI format 2_ 0. For example, the base station may configure the detection period of the DCI format 2_0 to be 18ms, and the first slot of each 18ms needs to detect the DCI.
For the UE, taking the configured DRX cycle as 80ms as an example, the base station configures the UE to detect only 4ms DCI within the activation time of DRX, that is, the configured duration is 4 ms. During this period, the UE detects DCI of other formats, such as DCI format 0_0 (DCI for uplink grant) and DCI format 1_0 (DCI for downlink assignment). If during this period, the UE needs to detect the DCI format 2_0 at a certain time slot of the duration according to the configuration of the DCI format 2_0, for example, the UE is configured to detect the DCI format 2_0 at the 4 th time slot, the UE needs to detect the DCI according to the configured time slot.
If the UE does not detect the DCI of the UE within the duration, namely no data transmission, the UE enters the DRX inactive time, and then the UE enters a sleep state so as to save power consumption. However, the base station needs to serve many other UEs during the DRX inactivity time of the UE, and therefore the base station needs to dynamically adjust the uplink and downlink timeslots according to the traffic status of all served UEs, so the base station may send DCI format 2_0 for multiple times during the DRX inactivity time of the UE and adjust the uplink and downlink timeslots, for example, the base station sends DCI format 2_0 for 4 times during the DRX inactivity time of the UE.
If the UE frequently wakes up to detect the DCI format 2_0 in the non-active time of the DRX, the power consumption of the UE may increase, so that before detecting the DCI format 2_0, the method for detecting DCI according to the embodiment of the present invention determines whether the DCI format 2_0 needs to be detected in the non-active time of the current DRX cycle.
In a specific implementation, the UE may determine whether to detect the DCI format 2_0 within the inactive time of the current DRX cycle by itself based on the detection cycle of the DCI format 2_0 and the DRX cycle configured by the base station.
For example, referring to fig. 2, the DRX cycle configured by the base station is T, wherein the duration is T1, and the inactivity time is T2. The duration of the detection period of the DCI format 2_0 configured by the base station is U, assuming that the first time slot of the DCI format 2_0 detection period is a time slot in which the UE needs to detect the DCI format 2_0, and assuming that the current DRX cycle is the DRX cycle 21.
In a specific implementation, the UE may determine whether it needs to detect the DCI format 2_0 within the inactive time T2 of the current DRX cycle by determining whether the duration of the next DRX cycle, that is, the DRX cycle 22, includes the detection slot of the DCI format 2_ 0.
Specifically, if the duration of the next DRX cycle 22 includes the detection slot of the DCI format 2_0, the UE may detect the DCI format 2_0 in the included detection slot of the DCI format 2_0 to obtain the latest slot format information, and it is not necessary to detect the DCI format 2_0 in the inactive time T2 of the current DRX cycle 21 to reduce its power consumption. If the duration of the next DRX cycle 22 does not include the detection slot of DCI format 2_0, the UE may determine that it needs to detect DCI format 2_0 within the inactive time T2 of the current DRX cycle 21.
In order to further reduce the power consumption of the UE, the improved scheme is as follows: the UE may determine whether DCI format 2_0 needs to be detected within the inactive time T2 of the current DRX cycle by determining whether there is a variable slot within the duration of the next DRX cycle 22 and whether the detection slot of DCI format 2_0 is located after at least one variable slot.
Specifically, when there is a variable slot within the duration of the next DRX cycle 22 and the detection slot of the DCI format 2_0 is located after at least one variable slot, the UE determines that it needs to detect the DCI format 2_0 within the inactive time T2 of the current DRX cycle 21.
In a specific implementation, whether there is a variable slot within the duration of the next DRX cycle 22 may be indicated to the UE by the base station through RRC signaling. Also, there may be only one variable slot or multiple variable slots within the duration of the DRX cycle 22. When there are multiple variable time slots, the multiple variable time slots may be contiguous or non-contiguous. For example, when the duration of the DRX cycle 22 is 4ms, the base station may indicate that the first 3ms are all variable slots, or may indicate that the 1ms, 2ms, and 4ms are variable slots.
In an implementation, the duration of the DRX cycle 22 may include only one detection slot of DCI format 2_0, may include multiple detection slots of DCI format 2_0, and the specific number is not limited as long as the detection slot of one DCI format 2_0 is located after one of the variable slots.
In order to reduce the power consumption of the UE, in an embodiment of the present invention, the base station may further determine whether the UE needs to detect the DCI format 2_0 in the inactive time of the current DRX cycle, and further generate and send corresponding DCI detection indication information to the UE, where the UE only needs to execute according to the indication of the DCI detection indication information.
In specific implementation, the base station may instruct the UE to detect the DCI format 2_0 in the inactive time of the DRX cycle through the DCI detection indication information, or may instruct the UE not to detect the DCI format 2_0 in the inactive time of the DRX cycle, and how to specifically instruct may be selected by the base station. In a specific implementation, the base station may determine whether the UE needs to detect the DCI format 2_0 within the inactive time of the current DRX cycle based on the detection cycle of the DCI format 2_0 and the DRX cycle, and further generate corresponding DCI detection indication information.
Specifically, when the base station includes the detection timeslot of the DCI format 2_0 in the duration of the next DRX cycle, the base station may indicate, through the DCI detection indication information, that the UE does not need to detect the DCI format 2_0 in the inactive time of the current DRX cycle, and otherwise, may indicate that the UE needs to detect the DCI format 2_0 in the inactive time of the current DRX cycle. Those skilled in the art can refer to the above description about the UE determining whether to detect the DCI format 2_0 in the inactive time of the current DRX cycle based on the detection cycle of the DCI format 2_0 and the DRX cycle, and will not be described herein again.
In a specific implementation, the base station may also determine whether the UE needs to detect the DCI format 2_0 in the inactive time of the current DRX cycle according to the adjustment condition of the uplink and downlink timeslots, so as to generate corresponding DCI detection indication information.
For example, when the base station does not frequently adjust the uplink and downlink timeslots, the DCI detection indication information may indicate that the UE does not need to detect the DCI format 2_0 in the inactive time of the current DRX cycle. When the base station will frequently adjust the uplink and downlink timeslots, it may indicate that the UE needs to detect DCI format 2_0 within the inactive time of the current DRX cycle.
In specific implementation, the base station may send the DCI detection indication information to the UE through RRC signaling, so that the behavior of the UE in the DRX inactivity time may be further specified according to the actual scheduling state, and the processing complexity of the UE is reduced.
And step 12, when the DCI of the slot format information needs to be detected in the inactive time of the current DRX period, determining the detection slot of the DCI of the slot format information which is the latest time away from the duration of the next DRX period.
For example, referring to fig. 2, the base station sends DCI format 2_0 3 times during the inactive time T2 of the current DRX cycle 21, and at this time, if it is determined that the UE needs to detect DCI format 2_0 during the inactive time T2 of the current DRX cycle 21, the detection slot of the latest DCI format 2_0 from the duration of the next DRX cycle 22 may be determined.
As shown in fig. 2, assuming that the first slot of the DCI format 2_0 detection period is the slot for the UE to detect the DCI format 2_0, the detection slot of the DCI format 2_0 that is the latest time from the duration of the next DRX cycle 22 is the first slot of the DCI format 2_0 detection period as shown in the figure.
And step 13, detecting the DCI of the time slot format information according to the determined detection time slot to obtain the latest time slot format information.
In a specific implementation, the DCI format 2_0 is detected according to the determined detection slot, so that corresponding slot format information can be obtained, the obtained slot format information is used as the latest slot format information, and the UE can process operations such as receiving signaling and detecting a reference signal based on the latest slot format information.
For example, referring to fig. 2, the DCI format 2_0 is detected at the determined detection time slot according to the DCI format 2_0 detection period to obtain the corresponding time slot format information, and the UE may process operations such as receiving signaling and data, detecting a reference signal, and the like in a time duration (t2 to t1) corresponding to the DCI format 2_0 detection period based on the detected time slot format information.
By adopting the method for detecting the DCI in the embodiment of the invention, the UE can detect the DCI format 2_0 only when the DCI format 2_0 needs to be detected, namely, the UE does not need to frequently wake up to detect the DCI format 2_0 in the non-activation time of the DRX, so that the power consumption of the UE is effectively reduced, and the latest time slot format information can be obtained.
Fig. 3 is another DCI detection method provided in an embodiment of the present invention, where the method may include:
step 31, determining whether DCI format 2_0 is required in the inactive time of the current DRX cycle.
When the UE does not need to detect the DCI format 2_0 in the inactive time of the current DRX cycle, step 32 is performed, otherwise step 33 is performed.
And step 32, obtaining the latest slot format information from the last detected DCI format 2_ 0.
In a specific implementation, the DCI format 2_0 detected by the UE last time may be the DCI format 2_0 detected by the UE in the active time (including the duration) of the previous DRX cycle, or may be the DCI format 2_0 detected by the UE in the active time of the previous DRX cycle, where the specific DRX cycle is not limited as long as the UE detects the last time.
And obtaining the time slot format information from the last detected DCI format 2_0, so that the time slot format information can be determined to be the latest time slot format information to the greatest extent, and the influence on the aspects of UE signal receiving and the like is reduced.
Step 33, determining the detection time slot of the latest DCI format 2_0 from the duration of the next DRX cycle.
And step 34, detecting the DCI format 2_0 according to the determined detection time slot to obtain the latest time slot format information.
As for steps 33 and 34, the above description of steps 12 and 13 can be specifically referred to for implementation, and will not be repeated herein.
In an embodiment of the present invention, after determining the detection time slot of the DCI format 2_0 that is the latest time from the duration of the next DRX cycle, a reference signal may be detected in the determined detection time slot, and then channel state estimation is performed according to the detected reference signal, and an estimation result is reported within the activation time of the next DRX cycle. The estimation result of the Channel state estimation, that is, the Channel state information, for example, Channel Quality Indication (CQI) information, is not limited in particular.
Compared with the detection of the DCI format 2_0 within the DRX period activation time, the reference signal is detected within the detection time slot of the DCI format 2_0 which is the latest time away from the duration of the next DRX period, and channel estimation is carried out, so that the base station can acquire the estimated channel state information of the UE in time within the duration of the DRX period, the scheduling of data transmission is facilitated, and the data transmission efficiency is improved.
In order to make those skilled in the art better understand and implement the present invention, the user terminal and the computer readable storage medium corresponding to the above method are described in detail below.
Referring to fig. 4, an embodiment of the present invention provides a user terminal 40, where the user terminal 40 may include: a judging unit 41, a slot determining unit 42 and a DCI detecting unit 43. Wherein:
the determining unit 41 is adapted to determine whether DCI of slot format information needs to be detected within the inactive time of the current DRX cycle;
the time slot determining unit 42 is adapted to determine, when DCI of slot format information needs to be detected within the inactive time of the current DRX cycle, a detection time slot of DCI of slot format information that is the latest time from the duration of the next DRX cycle;
the first DCI detecting unit 43 is adapted to perform DCI detection on the slot format information according to the determined detection slot, and obtain the latest slot format information.
In an embodiment of the present invention, the determining unit 41 is adapted to determine whether DCI of slot format information needs to be detected in the inactive time of the current DRX cycle by determining whether DCI detection slots of slot format information are included in the duration of the next DRX cycle.
In another embodiment of the present invention, the determining unit 41 is adapted to determine whether DCI of slot format information needs to be detected in the inactive time of the current DRX cycle by determining whether a variable slot exists in the duration of the next DRX cycle and whether a detection slot of DCI of slot format information is located after at least one variable slot.
In another embodiment of the present invention, the determining unit 41 is adapted to determine whether DCI of slot format information needs to be detected in the inactive time of the current DRX cycle based on DCI detection indication information sent by the base station.
In an embodiment of the present invention, the DCI detection indication information is adapted to indicate that the UE does not need to detect the DCI of the slot format information in the inactive time of the current DRX cycle when the DCI detection slot including the slot format information is detected in the duration of the next DRX cycle.
In an embodiment of the present invention, the DCI detection indication information is sent through RRC signaling.
In an embodiment of the present invention, referring to fig. 5, the user terminal 40 may further include: a second DCI detecting unit 44. The second DCI detecting unit 44 is adapted to, when it is not necessary to detect the DCI of the slot format information in the inactive time of the current DRX cycle, use the DCI of the last detected slot format information as the latest slot format information.
In an embodiment of the present invention, referring to fig. 4 and 5, the ue 40 may further include: a reference signal detection unit 45 and a channel state estimation unit 46. Wherein:
the reference signal detection unit 45 is adapted to detect a reference signal in the determined detection time slot;
the channel state evaluation unit 46 is adapted to perform channel state evaluation according to the detected reference signal and report the evaluation result within the next DRX cycle activation time.
The embodiment of the present invention further provides another computer-readable storage medium, where computer instructions are stored thereon, and when the computer instructions are executed, the steps of any one of the DCI detection methods in the foregoing embodiments are executed, which is not described herein again.
In particular implementations, the computer-readable storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
The embodiment of the present invention further provides a user terminal, where the user terminal may include a memory and a processor, where the memory stores a computer instruction capable of being executed on the processor, and when the processor executes the computer instruction, the step of executing any one of the DCI detection methods in the above embodiments is performed, which is not described in detail again.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (18)

1. A method for detecting DCI, comprising:
judging whether DCI of the time slot format information needs to be detected in the inactive time of the current DRX period or not;
when the DCI of the slot format information needs to be detected in the inactive time of the current DRX period, determining the detection slot of the DCI of the slot format information which is the latest time away from the duration of the next DRX period;
and according to the determined detection time slot, executing the detection of the DCI of the time slot format information to obtain the latest time slot format information.
2. The DCI detection method of claim 1, wherein the determining whether the DCI of the slot format information needs to be detected in the inactive time of the current DRX cycle comprises:
and judging whether the DCI of the time slot format information needs to be detected in the non-active time of the current DRX cycle or not by judging whether the duration of the next DRX cycle contains the detection time slot of the DCI of the time slot format information or not.
3. The DCI detection method of claim 1, wherein the determining whether the DCI of the slot format information needs to be detected in the inactive time of the current DRX cycle comprises:
and judging whether the DCI of the slot format information needs to be detected in the inactive time of the current DRX cycle or not by judging whether the variable time slot exists in the duration of the next DRX cycle or not and whether the detection time slot of the DCI of the slot format information is positioned behind at least one variable time slot or not.
4. The DCI detection method of claim 1, wherein the determining whether the DCI of the slot format information needs to be detected in the inactive time of the current DRX cycle comprises:
and judging whether the DCI of the time slot format information needs to be detected in the inactive time of the current DRX period or not based on the DCI detection indication information sent by the base station.
5. The method for detecting DCI of claim 4, wherein when a base station includes DCI detection slot of slot format information in the duration of the next DRX cycle, the base station indicates, through said DCI detection indication information, that the UE does not need to detect DCI of slot format information in the inactive time of the current DRX cycle.
6. The method of detecting DCI of claim 4, wherein a base station transmits the DCI detection indication information to a UE through RRC signaling.
7. The DCI detection method of claim 1, further comprising:
and when the DCI of the slot format information does not need to be detected in the inactive time of the current DRX period, obtaining the latest slot format information from the DCI of the last detected slot format information.
8. The method for detecting DCI according to any one of claims 1 to 7, further comprising:
detecting a reference signal within the determined detection time slot;
and performing channel state evaluation according to the detected reference signal, and reporting an evaluation result in the next DRX period activation time.
9. A user terminal, comprising:
a judging unit adapted to judge whether DCI of slot format information needs to be detected within an inactive time of a current DRX cycle;
a time slot determining unit, adapted to determine a detection time slot of DCI of the time slot format information which is the latest time from the duration of the next DRX cycle when the DCI of the time slot format information needs to be detected within the inactive time of the current DRX cycle;
and the first DCI detection unit is suitable for detecting the DCI of the time slot format information according to the determined detection time slot to obtain the latest time slot format information.
10. The user terminal of claim 9, wherein the determining unit is adapted to determine whether DCI of slot format information needs to be detected during the inactive time of the current DRX cycle by determining whether DCI detection slots of slot format information are included in the duration of the next DRX cycle.
11. The user terminal of claim 9, wherein the determining unit is adapted to determine whether DCI of slot format information needs to be detected in the inactive time of the current DRX cycle by determining whether a variable slot exists in the duration of the next DRX cycle and whether a detected slot of DCI of slot format information is located after at least one variable slot.
12. The user terminal of claim 9, wherein the determining unit is adapted to determine whether DCI of slot format information needs to be detected in the inactive time of the current DRX cycle based on DCI detection indication information transmitted by the base station.
13. The user terminal of claim 12, wherein the DCI detection indication information is adapted to indicate that the UE does not need to detect DCI of slot format information in an inactive time of a current DRX cycle when detecting a slot of DCI containing slot format information in a next DRX cycle duration.
14. The user terminal of claim 12, wherein the DCI detection indication information is transmitted through RRC signaling.
15. The user terminal of claim 9, further comprising:
and the second DCI detection unit is suitable for obtaining the latest time slot format information from the DCI of the last detected time slot format information when the DCI of the time slot format information does not need to be detected in the inactive time of the current DRX period.
16. The user terminal of any of claims 9 to 15, further comprising:
a reference signal detection unit adapted to detect a reference signal within the determined detection time slot;
and the channel state evaluation unit is suitable for carrying out channel state evaluation according to the detected reference signal and reporting an evaluation result in the next DRX period activation time.
17. A computer readable storage medium having stored thereon computer instructions, wherein the computer instructions when executed perform the steps of the DCI detection method of any one of claims 1 to 8.
18. A user terminal comprising a memory and a processor, said memory having stored thereon computer instructions executable on said processor, wherein said processor when executing said computer instructions performs the steps of the DCI detection method of any one of claims 1 to 8.
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