Method and device for entering sleep, storage medium, and user equipment

Abstract

A method and device for entering sleep, a storage medium, and a user equipment, wherein the method for entering sleep comprises: monitoring PDCCH and determining whether to enter sleep state, wherein entering sleep state means ignoring some PDCCH monitoring opportunities or modifying PDCCH configuration. The technical solution of the present invention can optimize the design of sleep signaling in a narrowband system.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method and device for entering sleep, a storage medium, and a user equipment. Background Art

[0002] Generally speaking, in the connected state, the User Equipment (UE) monitors the Physical Downlink Control Channel (PDCCH) only within the DRX activation time (Active Time) according to the configuration of Discontinuous Reception (DRX) or Extended Discontinuous Reception (eDRX). This allows the user equipment to sleep periodically, thereby achieving the purpose of saving power for the user equipment. Generally speaking, the activation time at least includes the time when timers such as onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer, drx-RetransmissionTimerShortTTI, drx-ULRetransmissionTimer, drx-ULRetransmissionTimerShortTTI or mac-ContentionResolutionTimer are running.

[0003] In some scenarios, such as scenarios with low packet arrival rate or network congestion, for a given UE, no data is scheduled within a certain onDurationTimer. At this time, the UE still monitors the PDCCH within the onDurationTimer, causing additional power consumption. At this time, the base station can instruct the user equipment not to monitor the PDCCH within the onDurationTimer through Go-To-Sleep (GTS) signaling. Generally speaking, the Go-To-Sleep signaling can be a Media Access Control (MAC) layer command. For example, the base station can command the UE to stop the onDurationTimer through a MAC Packet Data Unit (PDU) or a MAC Control Element (CE).

[0004] However, in the application scenario of narrowband system, time and frequency resources are limited. If the UE is instructed to enter sleep mode through MAC layer command, PDCCH and Physical Downlink Shared Channel (PDCCH) resources will be consumed. Therefore, how to optimize the design of sleep mode signaling in narrowband system is an urgent problem to be solved. Summary of the invention

[0005] The technical problem solved by the present invention is how to optimize the design of sleep entry signaling in a narrowband system.

[0006] To solve the above technical problems, an embodiment of the present invention provides a method for entering sleep, which includes: monitoring PDCCH and determining whether to enter sleep state, wherein entering sleep state means ignoring some PDCCH monitoring opportunities or modifying PDCCH configuration.

[0007] Optionally, if monitoring is completed on the PDCCH ending in frame n and it is determined to enter the sleep state, there is no need to monitor the PDCCH on any frame from frame n+1 to frame n+k-1, where the ACK / NACK feedback indicated by the PDCCH starts in frame n+k, where n and k are integers.

[0008] Optionally, if monitoring is completed on the PDCCH ending in frame n and it is determined to enter the sleep state, there is no need to monitor the PDCCH on any frame from frame n+1 to frame n+k-1, where the PDSCH scheduled by the PDCCH ends in frame n+k, where n and k are integers.

[0009] Optionally, if monitoring is completed on the PDCCH ending at frame n and it is determined to enter the sleep state, there is no need to monitor the PDCCH on any frame from frame n+1 to frame n+k, where k is a high-layer signaling indication, and n and k are integers.

[0010] Optionally, monitoring PDCCH and determining whether it is necessary to enter a sleep state includes: monitoring a sleep PDCCH; if the sleep PDCCH is detected, determining to enter a sleep state; or, if the sleep PDCCH is detected and the sleep indication information in the downlink control information transmitted by the sleep PDCCH indicates entering a sleep state, determining to enter a sleep state.

[0011] Optionally, monitoring the sleep PDCCH includes: monitoring the sleep PDCCH at a sleep PDCCH monitoring opportunity within an activation time.

[0012] Optionally, monitoring the sleep PDCCH includes: monitoring the sleep PDCCH in a common search space, and using a new RNTI to descramble the PDCCH, and if the descrambling is successful, determining that the PDCCH is a sleep PDCCH.

[0013] Optionally, the determining whether it is necessary to enter the sleep state includes: when the sleep PDCCH is detected, detecting a bit at a corresponding position in the sleep indication information to determine whether to enter the sleep state.

[0014] Optionally, the number of bits of the sleep indication information is configured through high-layer signaling, and the number of bits of the indication information is selected from 30 and 56.

[0015] Optionally, the sleep indication information includes an identifier of a user equipment that needs to enter a sleep state.

[0016] Optionally, the identifier of the user equipment is an index or number of the user equipment.

[0017] Optionally, higher layer signaling enables monitoring of the sleep PDCCH.

[0018] Optionally, the method for entering sleep further includes: if the sleep PDCCH is not detected, determining not to enter the sleep state.

[0019] Optionally, the method for entering sleep further includes: monitoring PDCCH; if the PDCCH is detected and sleep indication information in the downlink control information transmitted by the PDCCH indicates entering the sleep state, determining to enter the sleep state.

[0020] Optionally, the monitoring the PDCCH includes: monitoring the PDCCH at the PDCCH monitoring opportunity within the activation time.

[0021] Optionally, monitoring PDCCH includes: monitoring PDCCH in the user specified search space, and using C-RNTI to descramble the CRC of PDCCH, if the descrambling is successful, and the sleep indication information in the downlink control information transmitted by PDCCH indicates entering sleep, then determining to enter the sleep state.

[0022] Optionally, the sleep indication information indicating entering sleep means that a newly added DCI domain includes the sleep indication information, or the original DCI domain indicates an invalid state.

[0023] Optionally, the downlink control information format of the sleep PDCCH is a downlink control information format used for scheduling PDSCH.

[0024] Optionally, the downlink control information format used for scheduling PDSCH includes a downlink control information format used for scheduling non-broadcast PDSCH.

[0025] Optionally, the size of the downlink control information is 56 bits.

[0026] Optionally, the downlink control information format used for scheduling PDSCH includes a downlink control information format used for scheduling broadcast PDSCH.

[0027] Optionally, the size of the downlink control information is 30 bits.

[0028] Optionally, before monitoring the PDCCH, the method further includes: determining whether to modify the PDCCH configuration after entering the sleep state according to a high-layer signaling from the base station.

[0029] Optionally, the high-layer signaling indicates whether to modify the PDCCH monitoring period, and the monitoring period is greater than the period for monitoring the PDCCH before the user equipment enters the sleep state.

[0030] Optionally, the period indication information includes a multiple of a period for monitoring the PDCCH before the user equipment enters a sleep state.

[0031] Optionally, the higher layer signaling indicates whether to modify the PDCCH configuration after the user equipment enters the sleep state.

[0032] Optionally, the downlink control information also includes first resource indication information to indicate the number of carriers, carrier starting positions and / or maximum number of repetitions of the PDCCH that the user equipment monitors after entering the sleep state.

[0033] Optionally, higher layer signaling enables the sleep indication information indication.

[0034] To solve the above technical problems, an embodiment of the present invention further discloses a device for entering sleep, which includes: a PDCCH monitoring module for monitoring PDCCH and determining whether it is necessary to enter a sleep state, wherein entering a sleep state means ignoring some PDCCH monitoring opportunities or modifying the PDCCH configuration.

[0035] The embodiment of the present invention further discloses a storage medium on which computer instructions are stored. When the computer instructions are executed, the steps of the method for entering sleep are executed.

[0036] An embodiment of the present invention further discloses a user device, including a memory and a processor, wherein the memory stores computer instructions that can be executed on the processor, and the processor executes the steps of the method for entering sleep when executing the computer instructions.

[0037] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0038] The technical solution of the present invention monitors PDCCH and determines whether it is necessary to enter a sleep state, wherein entering a sleep state means ignoring some PDCCH monitoring opportunities or modifying the PDCCH configuration. The technical solution of the present invention determines whether to enter a sleep state by monitoring PDCCH. On the one hand, it can reduce user power consumption in scenarios such as low packet arrival rate or network congestion, and on the other hand, it can avoid instructing user equipment to enter sleep through MAC layer commands, thereby saving time and frequency resources.

[0039] Further, the sleep PDCCH is monitored; if the sleep PDCCH is detected, it is determined to enter the sleep state; or, if the sleep PDCCH is detected, and the sleep indication information in the downlink control information transmitted by the sleep PDCCH indicates entering the sleep state, it is determined to enter the sleep state. Alternatively, the PDCCH is monitored; if the PDCCH is detected, and the sleep indication information in the downlink control information transmitted by the PDCCH indicates entering the sleep state, it is determined to enter the sleep state. The technical solution of the present invention further realizes the flexibility of the user equipment entering the sleep state by monitoring the PDCCH to determine whether to enter the sleep state. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a flow chart of a method for entering sleep according to an embodiment of the present invention;

[0041] Figure 2 yes Figure 1 A flowchart of a specific implementation of step S101 is shown;

[0042] Figure 3 is a partial flow chart of a method for entering sleep according to an embodiment of the present invention;

[0043] Figure 4 is a schematic diagram of a specific application scenario of an embodiment of the present invention;

[0044] Figure 5 It is a structural schematic diagram of a device for entering sleep according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] As described in the background technology, in the application scenario of narrowband system, time and frequency resources are limited. If the UE is instructed to enter sleep mode through MAC layer command, PDCCH and Physical Downlink Shared Channel (PDCCH) resources need to be consumed. Therefore, how to optimize the design of sleep mode signaling in narrowband system is an urgent problem to be solved.

[0046] The technical solution of the present invention determines whether to enter the sleep state by monitoring the PDCCH. On the one hand, it can reduce user power consumption in scenarios such as low packet arrival rate or network congestion. On the other hand, it can avoid instructing the user device to enter sleep through MAC layer commands, saving time and frequency resources.

[0047] The technical solution of this invention can be applied to 5G (5Generation) communication systems, as well as 4G and 3G communication systems, and can also be applied to various new communication systems in the future, such as 6G and 7G.

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0049] The method for entering sleep described in this embodiment can be used on the user equipment side. That is, each step of the method for entering sleep can be performed by the user equipment.

[0050] The user equipment in the embodiment of the present invention may be in a narrowband system.

[0051] In the embodiment of the present invention, the UE may monitor the PDCCH and determine whether it needs to enter a sleep state, where entering the sleep state means ignoring some PDCCH monitoring opportunities or modifying the PDCCH configuration.

[0052] Modifying the PDCCH configuration may be modifying the monitoring period of the PDCCH to reduce the number of times the PDCCH is monitored within the activation time or the working duration timer. Specifically, reducing the number of times the PDCCH is monitored may be using a new monitoring period longer than the original monitoring period to monitor the PDCCH.

[0053] In a specific embodiment of the present invention, please refer to Figure 1 , Figure 1 The present invention is a flowchart of a method for entering sleep according to an embodiment of the present invention.

[0054] Specifically, Figure 1 The method shown may include the following steps:

[0055] Step S101: monitoring the sleep PDCCH;

[0056] Step S102: if the sleep PDCCH is detected, it is determined to enter the sleep state; or if the sleep PDCCH is detected and the sleep indication information in the downlink control information transmitted by the sleep PDCCH indicates entering the sleep state, it is determined to enter the sleep state.

[0057] It should be pointed out that the serial numbers of the steps in this embodiment do not limit the execution order of the steps.

[0058] In a specific implementation, if the UE completes monitoring on the PDCCH ending at frame n and determines to enter the sleep state, the UE does not need to monitor the PDCCH on any frame from frame n+1 to frame n+k-1, that is, the UE ignores the PDCCH monitoring opportunity from frame n+1 to frame n+k-1, where the ACK / NACK feedback indicated by the PDCCH starts at frame n+k. ACK is generally called Acknowledgement, and NACK is generally called Negative-Acknowledgment. ACK / NACK feedback belongs to HARQ feedback. This can maintain the service while saving power.

[0059] In a specific implementation, if the UE completes monitoring on the PDCCH ending in frame n and determines to enter the sleep state, the UE does not need to monitor the PDCCH on any frame from frame n+1 to frame n+k-1, that is, the UE ignores the PDCCH monitoring opportunity from frame n+1 to frame n+k-1, where the PDSCH scheduled by the PDCCH ends in frame n+k. This can maintain the service while saving power.

[0060] In a specific implementation, if the UE completes monitoring on the PDCCH ending at frame n and determines to enter the sleep state, the UE does not need to monitor the PDCCH on any frame from frame n+1 to frame n+k, that is, the UE ignores the PDCCH monitoring timing from frame n+1 to frame n+k, where k is a high-level signaling indication. When resources are tight, the base station can tell the UE in advance that there will be no PDCCH scheduling for a period of time. In a specific embodiment, the base station can configure N possible k values ​​through MAC CE or RRC signaling, and dynamically indicate one of the N k values ​​through PDCCH. This takes into account both flexibility and reduces signaling overhead.

[0061] In a specific implementation, if the UE completes monitoring on the PDCCH ending at frame n and determines to enter the sleep state, the UE does not need to monitor the PDCCH on any frame from frame n+1 to frame n+k-1, that is, the UE ignores the PDCCH monitoring opportunity from frame n+1 to frame n+k-1, where k is a high-level signaling indication. When resources are tight, the base station can tell the UE in advance that there will be no PDCCH scheduling in the next period of time.

[0062] In a specific implementation, the UE can monitor the sleep PDCCH and can determine whether the sleep PDCCH is detected. If the sleep PDCCH is detected, it is determined to enter the sleep state. Alternatively, the UE can monitor the sleep PDCCH and can determine whether the sleep PDCCH is detected. If the sleep PDCCH is detected, and the sleep indication information in the downlink control information transmitted by the sleep PDCCH indicates entering the sleep state. The sleep indication information refers to information that can be used to indicate whether the UE enters the sleep state. At this time, the UE uses the new RNTI to descramble the CRC of the PDCCH. If the descrambling is successful, it is determined that the sleep PDCCH is detected. The UE entering the sleep state includes the UE ignoring some PDCCH monitoring opportunities.

[0063] In the specific implementation of step S101, the UE may monitor the sleep PDCCH at the sleep PDCCH monitoring opportunity within the activation time, so as not to increase the opportunities for the UE to monitor the PDCCH and not to increase the power consumption of the UE.

[0064] In a specific embodiment, step S101 may include the following steps: determining the first PDCCH to be monitored at the start of the activation time or the working duration as the sleep PDCCH; or determining the sleep PDCCH within a subset of PDCCH monitoring opportunities within the activation time or the working duration.

[0065] In this embodiment, the timing for the UE to monitor the sleep PDCCH is limited, which can be the first PDCCH to be monitored in the working duration timer. Since the PDCCH monitoring timing in the working duration timer is determined, the monitoring timing of the sleep PDCCH can also be a subset of the PDCCH monitoring timing in the working duration timer, thereby further reducing the power consumption of the UE.

[0066] Specifically, if the UE does not detect the sleep PDCCH in step S101, it determines not to enter the sleep state.

[0067] In step S101, the sleep PDCCH is monitored, and in the specific implementation of step S102, it is determined whether to enter the sleep state.

[0068] In a non-limiting embodiment, before step S101, higher layer signaling enables monitoring of the sleep PDCCH. If the UE receives higher layer signaling not to enable monitoring of the sleep PDCCH, the UE does not perform step S101, so that the base station has flexibility and can instruct UEs that do not need to save power not to enable monitoring of the sleep PDCCH.

[0069] Furthermore, high-layer signaling enables the sleep indication information indication.

[0070] In a non-limiting embodiment, if the duration of the on-duration timer in the DRX cycle is less than a preset threshold, the UE does not monitor the sleep PDCCH, that is, does not perform Figure 1 Step S101 is shown. Since the UE has few opportunities to monitor the PDCCH during the working duration when the working duration timer is less than the preset threshold, it may not monitor the sleep PDCCH to ensure the data transmission performance of the UE.

[0071] In a non-limiting embodiment, the downlink control information further includes a duration for entering a sleep state, and the duration is a DRX cycle number.

[0072] In a non-limiting embodiment of the present invention, Figure 1 The step S101 shown may include the following steps: monitoring the sleep PDCCH in the common search space, and using the new RNTI to descramble the CRC of the PDCCH, and if the descrambling is successful, determining that the sleep PDCCH is detected.

[0073] In this embodiment, the UE may monitor the sleep PDCCH in the common search space and determine whether it is a sleep PDCCH. The specific monitoring method may be: use a new radio network temporary identity (RNTI) to descramble the PDCCH. If the descrambling is successful, it may be determined that the PDCCH is a sleep PDCCH. The new RNTI refers to an RNTI different from the original RNTI to distinguish the sleep PDCCH from the original PDCCH.

[0074] In this embodiment, the size of the DCI may be 56 bits.

[0075] Specifically, the PDCCH descrambling may refer to performing cyclic redundancy check (CRC) descrambling on the PDCCH.

[0076] Furthermore, the sleep indication information includes a bit at a position corresponding to the user equipment on the bitmap. When the UE detects the sleep PDCCH, the UE may detect the bit at a corresponding position in the sleep indication information to determine whether to enter the sleep state.

[0077] In a specific implementation, the sleep indication information may be carried in the DCI in the form of a bitmap, and the UE may determine whether the UE enters sleep by checking the value of the corresponding bit position in the bitmap. For example, when the bit value is 0, the UE does not enter sleep, and when the bit value is 1, the UE enters sleep. The number of bits of the sleep indication information (i.e., the bitmap) is configured through high-layer signaling, such as Radio Resource Control (RRC) signaling, and the number of bits of the indication information is selected from 30 and 56 to be the same as the DCI format size.

[0078] Alternatively, the sleep indication information may be carried in the DCI in the form of a UE identifier list, where the identifier list includes at least one identifier of a UE that needs to enter sleep. The UE determines whether to enter sleep by checking whether its own identifier exists in the identifier list.

[0079] Furthermore, the identifier of the user equipment is an index or number of the user equipment.

[0080] In an optional embodiment of the present invention, Figure 1 The step S101 shown can be replaced by the step of monitoring the PDCCH, wherein the PDCCH refers to the PDCCH that needs to be monitored within the activation time.

[0081] In the specific implementation of step S101, the UE may monitor the PDCCH at the PDCCH monitoring opportunity within the activation time, so as not to increase the opportunities for the UE to monitor the PDCCH and not to increase the power consumption of the UE.

[0082] In another non-limiting embodiment of the present invention, please refer to Figure 2 , Figure 1 The step S101 shown may include the following steps:

[0083] Step S201: monitor PDCCH in a specified search space (UE-specific search space), and use the new C-RNTI to descramble the CRC of PDCCH. If the descrambling is successful, it is determined to enter the sleep state;

[0084] Step S202: Monitor PDCCH in the designated search space and use C-RNTI to descramble the CRC of PDCCH. If the descrambling is successful and the sleep indication information in the downlink control information transmitted by PDCCH indicates entering sleep, then determine that the detected PDCCH is a sleep PDCCH. Generally speaking, the PDCCH at this time is a scheduling PDCCH.

[0085] In this embodiment, the UE may selectively execute step S201 or step S202 according to actual application requirements.

[0086] In this embodiment, the UE can monitor the PDCCH in the specified search space and determine whether it is a sleep PDCCH. The specific monitoring method can be: the UE uses a new cell radio network temporary identifier (Cell Radio Network Temporary Identifier, C-RNTI) to descramble the CRC of the PDCCH. If the descrambling is successful, it can be determined that the sleep PDCCH is detected. Among them, the new C-RNTI refers to a C-RNTI different from the original C-RNTI to distinguish the sleep PDCCH from the original PDCCH.

[0087] Alternatively, the specific monitoring method may also be: use C-RNTI (that is, the original C-RNTI) to demodulate the CRC of PDCCH. If the demodulation is successful, obtain the DCI transmitted by PDCCH. If the sleep indication information in the DCI transmitted by PDCCH indicates entering sleep, determine to enter the sleep state.

[0088] Specifically, the descrambling of the CRC of the PDCCH may refer to performing a cyclic redundancy check (CRC) descrambling on the PDCCH.

[0089] Furthermore, the sleep indication information indicating entering sleep means that a newly added DCI field includes the sleep indication information, or the original DCI field indicates an invalid state.

[0090] In a specific application scenario, the original DCI format has 50 bits, and 1 bit can be added as a new DCI field to carry sleep indication information. If the value of the new DCI field is 1, the UE enters sleep; if the value of the new DCI field is 0, the UE does not enter sleep.

[0091] In another specific application scenario, a DCI field in the original DCI format has 3 bits and can indicate 8 states, but two of the states are invalid states, for example, 110 and 111. Then, when the original DCI field indicates an invalid state, that is, the value of the original DCI field is 110 and 111, the UE can determine that the PDCCH is a sleep PDCCH.

[0092] The downlink control information format of the sleep PDCCH is a downlink control information format used for scheduling PDSCH.

[0093] In a specific embodiment of the present invention, the downlink control information format of the sleep PDCCH is a downlink control information format used for scheduling PDSCH.

[0094] In this embodiment, the DCI format of the sleep PDCCH may be an original DCI format, such as a downlink control information format for scheduling PDSCH. Furthermore, the UE may use the original DCI format to parse the DCI of the sleep PDCCH to avoid changing the DCI size and thus increasing the number of blind detections.

[0095] Furthermore, the downlink control information format used for scheduling PDSCH includes the downlink control information format used for scheduling non-broadcast PDSCH. Specifically, the size of the downlink control information is 56 bits.

[0096] In this embodiment, the UE may adopt the downlink control information format of the scheduling non-broadcast PDSCH to parse the DCI of the sleep PDCCH, so that the UE does not need to monitor the downlink control information format of the scheduling non-broadcast PDSCH in the connected state.

[0097] In another specific embodiment of the present invention, the downlink control information format used for scheduling PDSCH includes a downlink control information format used for scheduling broadcast PDSCH. Specifically, the size of the downlink control information is 30 bits.

[0098] In a non-limiting embodiment of the present invention, the downlink control information also includes monitoring indication information for indicating whether the user equipment monitors the PDCCH after entering the sleep state. The method may also include the following steps: after entering the sleep state, determining whether to monitor the PDCCH according to the monitoring indication information.

[0099] In this embodiment, the monitoring indication information in the DCI may indicate whether the UE monitors the PDCCH after entering sleep mode, so that the UE can monitor a small amount of PDCCH after entering sleep mode, thereby improving the performance of the UE.

[0100] Furthermore, the downlink control information also includes period indication information to indicate the monitoring period of the user equipment to monitor the PDCCH after entering the sleep state; please refer to Figure 3 , the method further comprises:

[0101] Step S301: after entering the sleep state, determining a period for monitoring the PDCCH according to the monitoring indication information;

[0102] Step S302: monitoring the PDCCH according to the monitoring period indicated by the period indication information, wherein the monitoring period is greater than the period for monitoring the PDCCH before the user equipment enters the sleep state.

[0103] In a specific implementation, the cycle indication information may directly indicate a specific value of the monitoring cycle, and the cycle indication information may also include a multiple of the cycle of monitoring the PDCCH before the user equipment enters the sleep state, wherein the multiple value is a positive integer greater than 1.

[0104] In this embodiment, the UE may monitor the PDCCH according to the monitoring period indicated by the period indication information to obtain scheduling information, which helps the base station configure the number or density of PDCCHs monitored by the UE.

[0105] Furthermore, the downlink control information also includes first resource indication information to indicate the number of carriers, carrier starting positions and / or maximum number of repetitions of the PDCCH that the user equipment monitors after entering the sleep state.

[0106] In a specific implementation, by instructing the UE to monitor the number of carriers, carrier starting position and / or maximum number of repetitions of PDCCH after entering the sleep state, the base station can easily configure the total number of frequency domain resources and time domain resources for the UE to monitor PDCCH.

[0107] In a non-limiting embodiment of the present invention, Figure 1 The method also includes: after entering the sleep state, determining whether to monitor the wake-up PDCCH according to the sleep indication information.

[0108] In this embodiment, the sleep indication information can also indicate whether the UE monitors the wake-up PDCCH after entering sleep, wherein the wake-up PDCCH can indicate whether the UE enters the awake state, and the entering the awake state refers to starting the working duration timer or starting the DRX deactivation timer. In this way, the sleep PDCCH and the wake-up PDCCH can flexibly cooperate with each other, thereby improving the flexibility of the UE to monitor the PDCCH.

[0109] Furthermore, the sleep indication information further includes second resource indication information to indicate the number of carriers, carrier starting positions and / or maximum number of repetitions of the wake-up PDCCH to be monitored by the user equipment after entering the sleep state.

[0110] In this embodiment, by indicating the number of carriers for monitoring the wake-up PDCCH, the carrier start position and / or the maximum number of repetitions, the base station can easily configure the total number of frequency domain resources and time domain resources for monitoring the wake-up PDCCH.

[0111] In a preferred embodiment of the present invention, the UE determines whether to modify the PDCCH configuration after entering the sleep state according to the high-layer signaling from the base station.

[0112] In this embodiment, since the UE can enter the sleep state in a variety of ways, such as ignoring some PDCCH monitoring opportunities, or modifying the PDCCH configuration, the specific way for the UE to enter the sleep state can be indicated through high-level signaling, that is, instructing the UE to ignore some PDCCH monitoring opportunities, or modify the PDCCH configuration.

[0113] Furthermore, the high-layer signaling indicates whether to modify the PDCCH monitoring period, and the monitoring period is greater than the period for monitoring the PDCCH before the user equipment enters the sleep state.

[0114] In a specific application scenario of the present invention, please refer to Figure 4 , the base station configures a semi-static DRX cycle for the UE in the connected state, wherein the working duration timer is turned on by default at the beginning of the DRX cycle, and the length of the working duration timer is Figure 4 T1 shown in a is, for example, 10 milliseconds (ms).

[0115] Those skilled in the art can understand that the DRX cycle and the length of the default on-duration timer can be adaptively configured, and the embodiment of the present invention does not limit this.

[0116] In the scenario of the present invention, the UE is in a narrowband system and the packet arrival rate in this scenario is low. The UE can monitor the PDCCH within the on-duration timer. For example, the UE detects the PDCCH at 80 ms within the on-duration timer and obtains the sleep indication information indicating that it enters the sleep state. Thus, the activation time (high horizontal line) of the UE is as follows: Figure 4 as shown in .

[0117] Among them, the current DRX cycle (such as Figure 4 The working duration timer (shown by the dotted line) is 160ms long, as shown in T1; the UE enters the sleep state after monitoring the PDCCH and obtaining the sleep indication information. According to the signaling, the UE ignores the 80ms PDCCH monitoring opportunity, so the UE only monitors the PDCCH within the first 80ms before the working duration timer is turned on, as shown in T2.

[0118] Please refer to Figure 5 The embodiment of the present invention further discloses a device 50 for entering sleep mode. The device 50 for entering sleep mode includes a PDCCH monitoring module 501 .

[0119] Among them, the PDCCH monitoring module 501 is used to monitor the PDCCH and determine whether it is necessary to enter the sleep state, wherein entering the sleep state means ignoring some PDCCH monitoring opportunities or modifying the PDCCH configuration.

[0120] The embodiment of the present invention determines whether to enter the sleep state by monitoring the PDCCH. On the one hand, it can reduce user power consumption in scenarios such as low packet arrival rate or network congestion. On the other hand, it can avoid instructing the user equipment to enter sleep through MAC layer commands, saving time and frequency resources.

[0121] For more information about the working principle and working method of the sleep device 50, please refer to Figures 1 to 3 The relevant description in will not be repeated here.

[0122] The embodiment of the present invention also discloses a storage medium on which computer instructions are stored, and the computer instructions can be executed when they are executed. Figure 1 , Figure 2 or Figure 3 The steps of the method shown in . The storage medium may include ROM, RAM, magnetic disk or optical disk, etc. The storage medium may also include non-volatile memory (non-volatile) or non-transitory memory, etc.

[0123] The embodiment of the present invention also discloses a user device, which may include a memory and a processor, wherein the memory stores computer instructions that can be executed on the processor. When the processor executes the computer instructions, it can execute Figure 1 , Figure 2 or Figure 3 The user equipment includes but is not limited to mobile phones, computers, tablet computers and other terminal devices.

[0124] The user equipment in the embodiment of the present invention may be any implementable access terminal, user unit, user station, mobile station, mobile station (mobile station, built as MS), remote station, remote terminal, mobile device, user terminal, terminal equipment (terminal equipment), wireless communication equipment, user agent or user device. The user equipment may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiment of the present application is not limited to this.

[0125] The base station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a radio access network (RAN) to provide wireless communication functions. For example, the device that provides base station functions in a 2G network includes a base transceiver station (BTS), the device that provides base station functions in a 3G network includes a node B (NodeB), the device that provides base station functions in a 4G network includes an evolved node B (evolvedNodeB, eNB), and in wireless local area networks (WLANs), the device that provides base station functions is an access point (AP), and the device that provides base station functions in 5G New Radio (NR) is a gNB, and a node B (ng-eNB) that continues to evolve, wherein the gNB and the terminal use NR technology for communication, and the ng-eNB and the terminal use E-UTRA (Evolved Universal Terrestrial Radio Access) technology for communication, and both the gNB and the ng-eNB can be connected to the 5G core network. The base station in the embodiment of the present application also includes a device that provides base station functions in a new communication system in the future. It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article indicates that the associated objects before and after are in an "or" relationship.

[0126] The "plurality" appearing in the embodiments of the present application refers to two or more.

[0127] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0128] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM) and direct rambus RAM (DR RAM).

[0129] The above embodiments in the present application can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center containing one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0130] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0131] In the several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device embodiments described above are merely schematic; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0132] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0133] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0134] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0135] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A method for falling asleep, characterized in that: include: Monitor the PDCCH and determine whether to enter a sleep state, where entering the sleep state means ignoring some PDCCH monitoring opportunities or modifying the PDCCH configuration; If monitoring is completed on the PDCCH ending at frame n and it is determined to enter the sleep state, it is not necessary to monitor the PDCCH on any frame from frame n+1 to frame n+k, where k is a high-layer signaling indication, and n and k are integers; The monitoring of the PDCCH includes: Monitor the PDCCH of the user-specified search space, and use the C-RNTI to descramble the CRC of the PDCCH. If the descrambling is successful and the sleep indication information in the downlink control information transmitted by the PDCCH indicates entering the sleep state, it is determined to enter the sleep state.

2. The method for falling asleep according to claim 1, characterized in that: The monitoring of the PDCCH and determining whether to enter the sleep state includes: Monitor sleep PDCCH; If the sleep PDCCH is detected, determining to enter a sleep state; Alternatively, if the sleep PDCCH is detected, and the sleep indication information in the downlink control information transmitted by the sleep PDCCH indicates entering the sleep state, it is determined to enter the sleep state.

3. The method for entering sleep according to claim 2, characterized in that: The monitoring of the sleep PDCCH comprises: The sleep PDCCH is monitored at a sleep PDCCH monitoring opportunity within the activation time.

4. The method for entering sleep according to claim 2, characterized in that: The monitoring of the sleep PDCCH comprises: The sleep PDCCH is monitored in the common search space, and the CRC of the PDCCH is descrambled using the new RNTI. If the descrambling is successful, it is determined that the sleep PDCCH is detected.

5. The method for entering sleep according to claim 4, characterized in that: The determining whether to enter a sleep state comprises: When the sleep PDCCH is detected, a bit at a corresponding position in the sleep indication information is detected to determine whether to enter the sleep state.

6. The method for entering sleep according to claim 5, characterized in that: The number of bits of the sleep indication information is configured through high-layer signaling, and the number of bits of the indication information is selected from 30 and 56.

7. The method for entering sleep according to claim 4, characterized in that: The sleep indication information includes an identifier of a user equipment that needs to enter a sleep state.

8. The method for falling asleep according to claim 7, characterized in that: The identifier of the user equipment is an index or number of the user equipment.

9. The method for falling asleep according to claim 2, characterized in that: Higher layer signaling enables monitoring of the sleep PDCCH.

10. The method for entering sleep according to claim 2, characterized in that: Also includes: If the sleep PDCCH is not detected, it is determined not to enter the sleep state.

11. The method for falling asleep according to claim 1, characterized in that: The monitoring the PDCCH comprises: The PDCCH is monitored at the PDCCH monitoring opportunity within the activation time.

12. The method for falling asleep according to claim 11, characterized in that: The sleep indication information indicating entering sleep means that a newly added DCI field includes the sleep indication information, or the original DCI field indicates an invalid state.

13. The method for falling asleep according to claim 1, characterized in that: The downlink control information format of the sleep PDCCH is a downlink control information format used for scheduling PDSCH.

14. The method for falling asleep according to claim 13, characterized in that: The downlink control information format used for scheduling PDSCH includes a downlink control information format used for scheduling non-broadcast PDSCH.

15. The method for falling asleep according to claim 14, characterized in that: The size of the downlink control information is 56 bits.

16. The method for falling asleep according to claim 13, characterized in that: The downlink control information format used for scheduling PDSCH includes a downlink control information format used for scheduling broadcast PDSCH.

17. The method for falling asleep according to claim 16, characterized in that: The size of the downlink control information is 30 bits.

18. The method for falling asleep according to claim 1, characterized in that: Before monitoring the PDCCH, the method further includes: determining whether to modify the PDCCH configuration after entering the sleep state according to the high-level signaling from the base station.

19. The method for falling asleep according to claim 18, characterized in that: The high-layer signaling indicates whether to modify the PDCCH monitoring period, where the monitoring period is greater than the period for monitoring the PDCCH before the user equipment enters the sleep state.

20. The method for falling asleep according to claim 19, characterized in that: The cycle indication information includes a multiple of a cycle for monitoring the PDCCH before the user equipment enters a sleep state.

21. The method for falling asleep according to claim 1, characterized in that: The higher layer signaling indicates whether the PDCCH configuration is modified after the user equipment enters the sleep state.

22. The method for falling asleep according to claim 2, characterized in that: The downlink control information also includes first resource indication information to indicate the number of carriers, carrier start positions and / or maximum number of repetitions of the PDCCH that the user equipment monitors after entering the sleep state.

23. The method for falling asleep according to claim 1, characterized in that: The sleep indication information is enabled by high-layer signaling.

24. A device for entering sleep, characterized in that: include: A PDCCH monitoring module, used to monitor PDCCH and determine whether to enter a sleep state, wherein entering a sleep state means ignoring some PDCCH monitoring opportunities or modifying PDCCH configuration; If monitoring is completed on the PDCCH ending at frame n and it is determined to enter the sleep state, it is not necessary to monitor the PDCCH on any frame from frame n+1 to frame n+k, where k is a high-layer signaling indication, and n and k are integers; The PDCCH monitoring module is also used to monitor the PDCCH of the user specified search space and use C-RNTI to descramble the CRC of the PDCCH. If the descrambling is successful and the sleep indication information in the downlink control information transmitted by the PDCCH indicates entering sleep, it is determined to enter the sleep state.

25. A storage medium having computer instructions stored thereon, characterized in that: When the computer instructions are executed, the steps of the method for entering sleep according to any one of claims 1 to 23 are executed.

26. A user device, comprising a memory and a processor, wherein the memory stores computer instructions executable on the processor, characterized in that: When the processor executes the computer instructions, the processor performs the steps of the method for entering sleep according to any one of claims 1 to 23.

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