CN107295687B - Downlink control information DCI scheduling control method and device - Google Patents

Downlink control information DCI scheduling control method and device Download PDF

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Publication number
CN107295687B
CN107295687B CN201610223666.2A CN201610223666A CN107295687B CN 107295687 B CN107295687 B CN 107295687B CN 201610223666 A CN201610223666 A CN 201610223666A CN 107295687 B CN107295687 B CN 107295687B
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dci
time
user terminal
dci scheduling
harq feedback
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CN107295687A (en
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李小海
于剑
唐静
武建超
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Nanjing ZTE New Software Co Ltd
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Nanjing ZTE New Software Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a DCI (downlink control information) scheduling control method and a DCI scheduling control device, wherein the method is applied to a base station adopting Discontinuous Reception (DRX), and comprises the following steps: receiving HARQ feedback of a user terminal; when the first HARQ feedback is that the DCI is in a lost state, monitoring whether a first DCI schedule which is sent to the user terminal after a first confirmation time exists or not, wherein the first confirmation time is an ending time of the last time that the user terminal is in an activated state before the receiving time of the first HARQ feedback; and when the first DCI scheduling exists, determining that the interaction between the first DCI scheduling and the user terminal is abnormal, and stopping sending the DCI scheduling to the user terminal. The invention solves the problems of poor power saving effect, waste of bandwidth due to ineffective scheduling and possible loss of scheduling opportunities in the existing mode for solving the state synchronization between the BS and the UE of the DRX.

Description

Downlink control information DCI scheduling control method and device
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for controlling downlink control information DCI scheduling.
Background
In a long Term Evolution (L TE, &lTtTtranslation = L "&gTt L &/T &gTtong Term Evolution) system of the universal mobile communication technology, in order to enable a user terminal (UE) to save power as much as possible, a Discontinuous Reception (DRX) method is applied to a L TE.
However, the state synchronization between the Base Station (BS) and the UE in DRX is a problem, for example, if the UE does not detect Downlink Control Information (DCI) sent by the base station, and there is an active state in the range of an inactive timer (inactive timer) at the BS side, if the BS sends DCI at this time, the UE side is in a sleep state, and continuous scheduling failure occurs.
In order to solve the problem, on one hand, the time of a persistent timer (duration timer) is usually set to reduce the opportunity of asynchronous states, and on the other hand, when DCI is lost, the DCI is judged to be asynchronous by a certain judgment method, and the BS scheduling is forced to enter a sleep state and terminated in time.
Disclosure of Invention
The invention provides a method and a device for controlling Downlink Control Information (DCI) scheduling, and aims to solve the problems that the power saving effect is poor, the bandwidth is wasted due to invalid scheduling and some scheduling opportunities are possibly lost in the conventional mode for solving the state synchronization between a Base Station (BS) and User Equipment (UE) of DRX.
In order to achieve the above object, an embodiment of the present invention provides a DCI scheduling control method, which is applied to a base station that uses discontinuous reception DRX, and the method includes:
receiving HARQ feedback of a user terminal;
when the first HARQ feedback is that the DCI is in a lost state, monitoring whether a first DCI schedule which is sent to the user terminal after a first confirmation time exists or not, wherein the first confirmation time is an ending time of the last time that the user terminal is in an activated state before the receiving time of the first HARQ feedback;
and when the first DCI scheduling exists, determining that the interaction between the first DCI scheduling and the user terminal is abnormal, and stopping sending the DCI scheduling to the user terminal.
Preferably, the expiration time when the user terminal is in the active state is the greater of the end time of the persistence timer and the end time of the inactivity timer scheduled by the second DCI; and the second DCI scheduling is DCI scheduling corresponding to second HARQ feedback, and the second HARQ feedback is HARQ feedback of the DCI in a non-lost state at the last time before the receiving time of the first HARQ feedback.
Preferably, after the step of feeding back the first HARQ feedback when the DCI is in a lost state, the method further includes:
judging whether the DCI scheduling of the last time before the receiving time of the first HARQ feedback is within the duration time range of the duration timer;
if so, determining that the interaction with the user terminal is normal, and allowing to continuously issue DCI scheduling to the user terminal;
and when the judgment result is negative, monitoring whether the first DCI scheduling sent to the user terminal after the first confirmation time exists.
Preferably, after the step of stopping the DCI scheduling transmission to the user terminal, the method further comprises:
and when the third HARQ feedback is monitored to be that the DCI issued by the base station is in a non-lost state, determining that the interaction between the third HARQ feedback and the user terminal is in a normal state, and allowing the user terminal to continue issuing DCI scheduling.
Preferably, the step of allowing the user terminal to continue to issue the DCI schedule includes:
judging whether the current time is before a second confirmation time, wherein the second confirmation time is the larger of the end time of the continuous timer and the end time of the inactivated timer;
and when the judgment result is yes, allowing the base station to continuously issue the DCI scheduling to the user terminal at the current moment.
In order to achieve the above object, the present invention further provides a DCI scheduling control device, which is applied to a base station that uses discontinuous reception DRX, and the device includes:
a receiving module, configured to receive HARQ feedback of a hybrid automatic repeat request of a user equipment;
a monitoring module, configured to monitor whether there is a first DCI schedule sent to a user terminal after a first acknowledgement time when the first HARQ feedback is that the DCI is in a lost state, where the first acknowledgement time is an expiration time when a last user terminal before a reception time of the first HARQ feedback is in an active state;
and the stopping module is used for determining that the interaction between the user terminal and the user terminal is abnormal when the first DCI scheduling exists, and stopping sending the DCI scheduling to the user terminal.
Preferably, the expiration time when the user terminal is in the active state is the greater of the end time of the persistence timer and the end time of the inactivity timer scheduled by the second DCI; and the second DCI scheduling is DCI scheduling corresponding to second HARQ feedback, and the second HARQ feedback is HARQ feedback of the DCI in a non-lost state at the last time before the receiving time of the first HARQ feedback.
Preferably, the monitoring module is further configured to:
when the first HARQ feedback is that the DCI is in a lost state, judging whether the last DCI scheduling before the receiving time of the first HARQ feedback is within the duration time range of the duration timer;
if so, determining that the interaction with the user terminal is normal, and allowing to continuously issue DCI scheduling to the user terminal;
and when the judgment result is negative, monitoring whether the first DCI scheduling sent to the user terminal after the first confirmation time exists.
Preferably, the apparatus further comprises:
a recovery module for, after the stop module stops transmitting the DCI scheduling to the user terminal,
and when the third HARQ feedback is monitored to be that the DCI issued by the base station is in a non-lost state, determining that the interaction between the third HARQ feedback and the user terminal is in a normal state, and allowing the user terminal to continue issuing DCI scheduling.
Preferably, the apparatus further comprises:
an allowing module, configured to allow the base station to continue to issue DCI scheduling to the user equipment at the current time, specifically:
judging whether the current time is before a second confirmation time, wherein the second confirmation time is the larger of the end time of the continuous timer and the end time of the inactivated timer;
and when the judgment result is yes, allowing the base station to continuously issue the DCI scheduling to the user terminal at the current moment.
The scheme of the invention at least comprises the following beneficial effects:
according to the method and the device for controlling the downlink control information DCI scheduling, after the reason that the DCI is lost is judged to be probably caused by the asynchronous state between the user terminal and the base station, the base station stops issuing the DCI scheduling, so that the invalid scheduling is effectively reduced, the waste of resources such as bandwidth and the like by the invalid scheduling is avoided, a long-time continuous timer and/or the period of an inactive timer are not required to be configured, and the user terminal achieves the power saving effect; and the invention recovers DCI scheduling in time after receiving the feedback that DCI is not lost in the follow-up, thereby avoiding wasting the opportunity of effective scheduling.
Drawings
Fig. 1 is a flowchart illustrating basic steps of a DCI scheduling control method according to a first embodiment of the present invention;
fig. 2 is one of the scenarios of the interaction process between the base station and the user equipment according to the second embodiment of the present invention;
fig. 3 is a second scenario diagram illustrating an interaction process between a base station and a ue according to a second embodiment of the present invention;
fig. 4 is a third scenario diagram illustrating an interaction process between a base station and a ue according to a second embodiment of the present invention;
fig. 5 is a block diagram of a downlink control information DCI scheduling control apparatus according to a third 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.
The invention provides a method and a device for controlling Downlink Control Information (DCI) scheduling, aiming at the existing problems.
First embodiment
Referring to fig. 1, a first embodiment of the present invention provides a DCI scheduling control method, which is applied to a base station that uses discontinuous reception DRX, and the method includes:
step 101, receiving hybrid automatic repeat request (HARQ) feedback of a user terminal.
Wherein, the HARQ feedback of the user terminal is the feedback aiming at DCI scheduling issued by the base station; HARQ feedback may be DCI loss or non-loss.
Step 102, when the first HARQ feedback is that the DCI is in a lost state, monitoring whether a first DCI schedule sent to the user terminal after a first acknowledgement time exists, where the first acknowledgement time is an expiration time when the user terminal is in an active state last before a receiving time of the first HARQ feedback.
Specifically, the first HARQ feedback is the latest feedback currently received; the first DCI scheduling is new DCI scheduling after a first acknowledgement time, where the first acknowledgement time is an expiration time when a last user terminal is in an active state before a receiving time of a first HARQ feedback, and after the first acknowledgement time, the user terminal may be in an inactive state, and if new DCI scheduling occurs after the first acknowledgement time, it indicates that the base station does not know that the state of the user terminal is in the inactive state (sleep state), and the DCI scheduling is continuously issued to the user terminal, and a state asynchronization may occur between the base station and the user terminal, and a current HARQ DCI feedback loss may be caused by the state asynchronization between the base station and the user terminal.
And 103, when the first DCI scheduling exists, determining that the interaction between the first DCI scheduling and the user terminal is abnormal, and stopping sending the DCI scheduling to the user terminal.
Determining that the interaction with the user terminal is abnormal, namely the base station and the user terminal are probably in a state asynchronization condition; when the interaction is confirmed to be abnormal, the base station stops sending DCI scheduling to the user terminal, and invalid scheduling is reduced, but in the prior art, on one hand, the time of a persistent timer or an inactive timer is usually set to be long to reduce the opportunity of asynchronous states, and under the condition, the time of the user terminal being activated is prolonged, so that the power saving effect is poor inevitably, but in the embodiment of the invention, the period of the persistent timer or the inactive timer is not required to be prolonged, and the technical effect of saving power for the user terminal is achieved.
On the other hand, the prior art has another way: when receiving feedback that DCI is lost, setting a threshold value, and when the number of continuous losses exceeds the threshold value, forcing the user terminal to enter a sleep state until other activation events occur (usually, the DRX activation state includes a starting state of a retransmission timer, a non-scheduling state of receiving a scheduling request, and a retransmission point activation state of an uplink HARQ, and the occurrence of the above states can be used as the activation events of the user terminal); before the threshold is reached, if the base station and the user terminal are actually out of synchronization, many invalid schedules are inevitably wasted.
Specifically, the expiration time of the user terminal in the active state is the greater of the end time of the persistence timer and the end time of the inactivity timer scheduled by the second DCI; and the second DCI scheduling is DCI scheduling corresponding to second HARQ feedback, and the second HARQ feedback is HARQ feedback of the DCI in a non-lost state at the last time before the receiving time of the first HARQ feedback.
Wherein each DRX cycle is a cycle between the ue going from an active state, a sleep state, and back to an active state. Each DRX period begins within a period of time, and is the period of the persistence timer; the user terminal keeps the active state during the duration timer and is synchronized with the state between the base stations. And the user terminal in the activated state is not limited to the duration of the duration timer, and if the HARQ feedback that the DCI is in the non-loss state is currently received, the user terminal is also activated for the duration of the non-activation timer corresponding to the feedback, so the expiration time of the user terminal in the activated state needs to be the greater of the two.
Further, after the step 102, when the first HARQ feedback is that the DCI is in a lost state, the method further includes:
the first step is to judge whether the last DCI scheduling before the receiving time of the first HARQ feedback is within the duration range of the duration timer.
Wherein, if the last DCI scheduling is within the duration range of the duration timer, all DCI schedules (referring to only the scheduling of the present DRX cycle) before the reception time of the first HARQ feedback are within the duration range of the duration timer.
And secondly, when the judgment result is yes, determining that the interaction with the user terminal is normal, and allowing to continuously issue DCI scheduling to the user terminal.
All DCI scheduling is within the duration time range of the duration timer, so the base station and the user terminal are necessarily synchronous at the time of issuing all DCI scheduling, the first HARQ feeds back the DCI loss, which is not caused by asynchronous states, and in order to avoid wasting effective scheduling opportunities, the base station is allowed to continue issuing the DCI scheduling under the condition.
And thirdly, when the judgment result is negative, monitoring whether the first DCI scheduling sent to the user terminal after the first confirmation time exists.
If all DCI schedules are not within the duration range of the duration timer, the ue and the base station may be out of synchronization, and it is necessary to continuously monitor whether there is a new DCI schedule sent to the ue after the first acknowledgment time.
Specifically, after step 103, the method further comprises:
and when the third HARQ feedback is monitored to be that the DCI issued by the base station is in a non-lost state, determining that the interaction between the third HARQ feedback and the user terminal is in a normal state, and allowing the user terminal to continue issuing DCI scheduling.
After the DCI scheduling is stopped being issued, the non-lost feedback is received again, the interaction between the base station and the user terminal is confirmed to be in a normal state, the DCI scheduling is recovered in time, and the waste of the opportunity of effective scheduling is avoided.
Specifically, in the above embodiment of the present invention, the step of allowing the user terminal to continue to issue the DCI scheduling includes:
judging whether the current time is before a second confirmation time, wherein the second confirmation time is the larger of the end time of the continuous timer and the end time of the inactivated timer;
and when the judgment result is yes, allowing the base station to continuously issue the DCI scheduling to the user terminal at the current moment.
Wherein, the second confirmation time, that is, the activation deadline when the user terminal may be in the activated state, is the greater of the end time of the persistent timer and the end time of the inactivity timer scheduled by the last DCI before the current time, indicating that the user terminal may be in the activated state before the time; when the base station is allowed to continue to perform DCI scheduling, it is also determined that the user terminal can receive the DCI scheduling, and if the current time is still in the duration of the persistent timer or the inactive timer, the base station is allowed to perform DCI scheduling.
In the embodiment of the invention, after the reason that the DCI is lost is judged to be probably caused by the asynchronous state between the user terminal and the base station, the base station stops issuing the DCI scheduling, so that the invalid scheduling is effectively reduced, the waste of resources such as bandwidth and the like by the invalid scheduling is avoided, and a long-time continuous timer and/or the period of a non-activated timer are not required to be configured, so that the user terminal achieves the power saving effect; and the invention recovers DCI scheduling in time after receiving the feedback that DCI is not lost in the follow-up, thereby avoiding wasting the opportunity of effective scheduling.
Second embodiment
A second embodiment describes a method for controlling scheduling of downlink control information DCI provided in the present invention. Referring to fig. 2 to fig. 4, which are respectively scene diagrams of an interaction process between a base station and a user equipment according to a second embodiment of the present invention, wherein a period of a persistent timer is set to be 5 milliseconds (the persistent timer starts to time from 0), a period of an inactive timer is set to be 4 milliseconds (the inactive timer starts to time from +1 of occurrence of scheduling), and only uplink scheduling exists;
defining a UE possible activation deadline and a first acknowledgement time; wherein the UE possible activation deadline is the greater of the end time of the duration timer and the end time of the inactivity timer, indicating that the UE may be in an active state before the end time; the first acknowledgement time is the larger of the end time of the duration timer and the end time of the inactivity timer whose feedback is not lost, and represents the expiration time of the user terminal in the active state.
Referring to fig. 2, initialization, DRX enabled, and recording DCI information including: a transmission time, a trusted or not identifier, an end time of an inactivity timer, and an end time of a duration timer.
In fig. 2, DCI scheduling does not occur and the persistence timer has started at time n +0, so the UE may activate the expiration time of n +4 and the first acknowledgement time of n + 4.
Referring to fig. 3, the first DCI schedule is issued at time n +0, the end time of the inactivity timer is n +4, the end time of the duration timer is n +4, and whether the DCI schedule is trusted is updated to be 1 (because the DCI schedule is sent within the time range of the duration timer, the DCI schedule must be trusted).
And issuing DCI scheduling for the second time at the time of n +4, wherein the activation deadline of the UE is possibly prolonged to n +8 (one inactive timer period is prolonged backwards after DCI scheduling occurs once), the sending time is n +4, the end time of an inactive timer is n +8, the end time of a persistent timer is n +4, and whether the credible identifier is 1 or not.
The first HARQ feedback received at the moment of n +7 is DCI loss, the sending time of the last DCI scheduling before the current moment is n +4 (second DCI scheduling), and the time is within the time-required range of the persistence timer, so that the DCI loss is not caused by state asynchronization between the UE and the BS at the moment, and the DCI scheduling is continuously issued at the moment.
And issuing DCI scheduling for the third time at the time of n +8, wherein the activation deadline of the UE is possibly prolonged to n +12, the sending time is updated to n +8, and whether the credible identifier is 0 or not (whether the scheduling is uncertain or not and the corresponding HARQ feedback needs to be waited in the time range that the current time does not last for the timer any longer).
And receiving the second HARQ feedback at the time of n +11 to indicate that the DCI is lost, wherein the corresponding second DCI scheduling transmission time is n +4, the first confirmation time is n +4, and after the first confirmation time n +4, a new transmission schedule (a third DCI scheduling issued at the time of n + 8) exists, so that the interaction with the user terminal is determined to be abnormal, and the DCI scheduling is stopped being transmitted to the user terminal.
Specifically, after the first acknowledgement time, the ue may be in an inactive state, and if new DCI scheduling occurs after the first acknowledgement time, it indicates that the base station does not know that the state of the ue is in the inactive state (sleep state), and if DCI scheduling continues to be issued to the ue, a state asynchronization may occur between the base station and the ue, and the current HARQ feedback DCI loss may be caused by the state asynchronization between the base station and the ue.
At time n +12, there is a scheduling request, and the scheduling request is not issued (the arrow shown is a dotted line).
Referring to fig. 4, an ACK signal is received at time n +15, that is, the third HARQ feedback indicates that the DCI is not lost, and the scheduling corresponding to the third HARQ feedback is the third DCI scheduling issued at time n +8, because the feedback is not lost, it is determined that the UE and the base station are in a synchronous state at this time, the base station is continuously allowed to issue the DCI scheduling, and at time n +15, the fifth DCI scheduling is issued, and the activation deadline of the UE may be extended to time n + 19.
In the embodiment of the invention, after the reason that the feedback DCI at the time n +11 is lost is judged to be probably caused by asynchronous states between the UE and the base station, the base station stops issuing the DCI scheduling, so that the invalid scheduling is effectively reduced, the waste of resources such as bandwidth and the like by the invalid scheduling is avoided, and a long-time continuous timer and/or a period of a non-activated timer are not required to be configured, so that the power saving effect of the user terminal is achieved; and the invention recovers DCI scheduling in time after receiving the feedback that DCI is not lost at the time of n +15, thereby avoiding wasting the opportunity of effective scheduling.
Third embodiment
Referring to fig. 5, a third embodiment of the present invention provides a DCI scheduling control apparatus for a base station using discontinuous reception DRX, including:
a receiving module 501, configured to receive HARQ feedback of a hybrid automatic repeat request of a user equipment;
a monitoring module 502, configured to monitor whether there is a first DCI schedule sent to a user terminal after a first acknowledgement time when the first HARQ feedback is that the DCI is in a lost state, where the first acknowledgement time is an expiration time when the user terminal is in an active state at a last time before a receiving time of the first HARQ feedback;
a stopping module 503, configured to determine that there is an abnormality in interaction with the user terminal when the first DCI schedule exists, and stop sending the DCI schedule to the user terminal.
Preferably, the expiration time when the user terminal is in the active state is the greater of the end time of the persistence timer and the end time of the inactivity timer scheduled by the second DCI; and the second DCI scheduling is DCI scheduling corresponding to second HARQ feedback, and the second HARQ feedback is HARQ feedback of the DCI in a non-lost state at the last time before the receiving time of the first HARQ feedback.
Preferably, the monitoring module 502 is further configured to:
when the first HARQ feedback is that the DCI is in a lost state, judging whether the last DCI scheduling before the receiving time of the first HARQ feedback is within the duration time range of the duration timer;
if so, determining that the interaction with the user terminal is normal, and allowing to continuously issue DCI scheduling to the user terminal;
and when the judgment result is negative, monitoring whether the first DCI scheduling sent to the user terminal after the first confirmation time exists.
Preferably, the apparatus further comprises:
a recovery module for, after the stopping module 503 stops transmitting the DCI scheduling to the user terminal,
and when the third HARQ feedback is monitored to be that the DCI issued by the base station is in a non-lost state, determining that the interaction between the third HARQ feedback and the user terminal is in a normal state, and allowing the user terminal to continue issuing DCI scheduling.
Preferably, the apparatus further comprises:
an allowing module, configured to allow the base station to continue to issue DCI scheduling to the user equipment at the current time, specifically:
judging whether the current time is before a second confirmation time, wherein the second confirmation time is the larger of the end time of the continuous timer and the end time of the inactivated timer;
and when the judgment result is yes, allowing the base station to continuously issue the DCI scheduling to the user terminal at the current moment.
It should be noted that the DCI scheduling control apparatus according to the embodiments of the present invention is an apparatus applying the foregoing method, that is, all embodiments of the foregoing method are applicable to the apparatus and can achieve the same or similar beneficial effects.
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 (10)

1. A DCI scheduling control method is applied to a base station adopting discontinuous reception DRX, and is characterized by comprising the following steps:
receiving HARQ feedback of a user terminal;
when the first HARQ feedback is that the DCI is in a lost state, monitoring whether a first DCI scheduling which is sent to the user terminal after a first confirmation time exists or not, wherein the first confirmation time is an expiration time of the user terminal in an activated state at the last time before the receiving time of the first HARQ feedback;
and when the first DCI scheduling exists, determining that the interaction between the first DCI scheduling and the user terminal is abnormal, and stopping sending the DCI scheduling to the user terminal.
2. The DCI scheduling control method according to claim 1, wherein the expiration time when the user terminal is in the active state is the greater of the end time of the duration timer and the end time of the inactivity timer of the second DCI schedule; the second DCI scheduling is DCI scheduling corresponding to second HARQ feedback, and the second HARQ feedback is HARQ feedback of the last DCI in a non-lost state before the receiving time of the first HARQ feedback.
3. The DCI scheduling control method according to claim 1, wherein after the step of when the first HARQ feedback is that the DCI is in a lost state, the method further comprises:
judging whether the last DCI scheduling before the receiving time of the first HARQ feedback is within the duration time range of a duration timer;
if so, determining that the interaction with the user terminal is normal, and allowing to continue to issue DCI scheduling to the user terminal;
and when the judgment result is negative, monitoring whether the first DCI scheduling sent to the user terminal after the first confirmation time exists.
4. The DCI scheduling control method of claim 1, wherein after the step of stopping the transmission of DCI scheduling to the user terminal, the method further comprises:
and when the third HARQ feedback is monitored to be that the DCI issued by the base station is in a non-lost state, determining that the interaction with the user terminal is in a normal state, and allowing to continue issuing DCI scheduling to the user terminal.
5. The DCI scheduling control method of claim 3 or 4, wherein the step of allowing the user terminal to continue to issue DCI scheduling comprises:
judging whether the current time is before a second confirmation time, wherein the second confirmation time is the larger of the end time of the continuous timer and the end time of the inactivated timer scheduled by the DCI at the last time before the current time;
and when the judgment result is yes, allowing the base station to continuously issue the DCI scheduling to the user terminal at the current moment.
6. A DCI scheduling control device is applied to a base station adopting discontinuous reception DRX, and is characterized by comprising:
a receiving module, configured to receive HARQ feedback of a hybrid automatic repeat request of a user equipment;
a monitoring module, configured to monitor whether there is a first DCI schedule sent to the ue after a first acknowledgement time when the first HARQ feedback is that the DCI is in a lost state, where the first acknowledgement time is an expiration time of the ue being in an active state for a last time before a receiving time of the first HARQ feedback;
and the stopping module is used for determining that the interaction between the first DCI scheduling and the user terminal is abnormal and stopping sending the DCI scheduling to the user terminal when the first DCI scheduling exists.
7. The DCI scheduling control apparatus of claim 6, wherein the expiration time when the user terminal is in an active state is the greater of the end time of the persistence timer and the end time of the inactivity timer of the second DCI scheduling; the second DCI scheduling is DCI scheduling corresponding to second HARQ feedback, and the second HARQ feedback is HARQ feedback of the last DCI in a non-lost state before the receiving time of the first HARQ feedback.
8. The DCI scheduling controller of claim 6, wherein the monitoring module is further configured to:
when the first HARQ feedback is that the DCI is in a lost state, judging whether the last DCI scheduling before the receiving time of the first HARQ feedback is within the duration time range of a duration timer;
if so, determining that the interaction with the user terminal is normal, and allowing to continue to issue DCI scheduling to the user terminal;
and when the judgment result is negative, monitoring whether the first DCI scheduling sent to the user terminal after the first confirmation time exists.
9. The DCI scheduling control apparatus according to claim 6, further comprising:
a recovery module for, after the stopping module stops transmitting DCI scheduling to the user terminal,
and when the third HARQ feedback is monitored to be that the DCI issued by the base station is in a non-lost state, determining that the interaction with the user terminal is in a normal state, and allowing to continue issuing DCI scheduling to the user terminal.
10. The DCI scheduling control apparatus according to claim 8 or 9, wherein the apparatus further comprises:
an allowing module, configured to allow the base station to continue to issue DCI scheduling to the user terminal at the current time, and specifically configured to:
judging whether the current time is before a second confirmation time, wherein the second confirmation time is the larger of the end time of the continuous timer and the end time of the inactivated timer scheduled by the DCI at the last time before the current time;
and when the judgment result is yes, allowing the base station to continuously issue the DCI scheduling to the user terminal at the current moment.
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