CN111586812B

CN111586812B - Method for receiving energy-saving signal by terminal and terminal

Info

Publication number: CN111586812B
Application number: CN201910224194.6A
Authority: CN
Inventors: 刘敏; 张传欣
Original assignee: Hisense Co Ltd
Current assignee: Hisense Co Ltd
Priority date: 2019-02-15
Filing date: 2019-03-22
Publication date: 2023-08-25
Anticipated expiration: 2039-03-22
Also published as: CN111586812A

Abstract

The embodiment of the invention provides a method for a terminal to receive an energy-saving signal and the terminal, wherein the method comprises the following steps: the terminal is configured into a DRX discontinuous receiving state, monitors an energy-saving signal in a DRX period, and the energy-saving signal is sent to the terminal by a base station, if the terminal monitors the energy-saving signal in the DRX period, corresponding operation is executed according to the time domain position of the energy-saving signal in the DRX period, and the time domain position of the energy-saving signal in the DRX period and the corresponding operation are in one-to-one correspondence. The technical scheme provided by the embodiment of the invention achieves the balance of terminal energy conservation and business data processing.

Description

Method for receiving energy-saving signal by terminal and terminal

Technical Field

The present invention relates to the field of terminal energy saving technologies, and in particular, to a method and an apparatus for receiving an energy saving signal by a terminal.

Background

The variety and number of intelligent terminal devices, such as smart bracelets, smart watches, smart phones, wearable devices, etc., are rapidly growing, and these intelligent terminal devices operate by being equipped with batteries themselves, the energy capacity of which is fixed.

The NR (New Radio) in the 5G era supports characteristics of high data rate, large bandwidth, low latency, etc., and requires higher Radio frequency processing capability and baseband processing capability to handle complex processes than the LTE (Long Term Evolution ) in the 4G era. An NR UE (User Equipment, user terminal) will consume more power consumption than an LTE UE. In addition, NR supports more frequent control/data monitoring than LTE. For example, if SCS (subcarrier) interval is 30khz, the complexity and power consumption of nr UE will be doubled compared to LTE UE when monitoring for time slot level, and if UE is configured with mini time slot, the power consumption of UE will be higher, so it is required to reduce the power consumption of terminal device.

Under the condition that the battery capacity of the terminal equipment is limited, the balance problem of energy conservation and terminal service data processing becomes a problem to be solved urgently.

Disclosure of Invention

The embodiment of the invention provides a method for receiving an energy-saving signal by a terminal and the terminal, which are used for better considering the energy saving of the terminal equipment and the balance problem of service data processing.

In a first aspect of an embodiment of the present invention, a method for a terminal to receive an energy-saving signal is provided, including:

the terminal is configured into a DRX discontinuous reception state;

the terminal monitors an energy-saving signal in a DRX period, and the energy-saving signal is sent to the terminal by a base station;

and if the terminal monitors the energy-saving signal in the DRX period, executing corresponding operation according to the time domain position of the energy-saving signal on the DRX period, wherein the time domain position of the energy-saving signal on the DRX period and the corresponding operation are in one-to-one correspondence.

According to some embodiments, further comprising:

and if the terminal does not monitor the energy-saving signal in the period, the terminal keeps a sleep state in the current DRX period or the next DRX period.

According to some embodiments, the power saving signal is a WUS wake-up signal, and the time domain position of the power saving signal On the DRX cycle is an interval between the WUS wake-up signal and a start time of the DRX cycle On Duration, characterized by a wus_offset parameter.

In accordance with some of the embodiments of the present invention,

the wus_offset value is 0, the terminal listens to the PDCCH physical downlink control channel during the DRX cycle On Duration.

And if the WUS_Offset value is smaller than 0, the terminal monitors the PDCCH physical downlink control channel in a partial time period during the DRX period On Duration.

And if the WUS_Offset value is greater than 0, the terminal wakes up in the DRX dormancy period and monitors the PDCCH physical downlink control channel in the next DRX period On Duration period. Preferably, after waking up, the terminal enters a pre_on_duration period, during which the terminal receives the SSB system information block and the TRS tracking reference signal, and measures the CSI-RS channel state information reference signal.

A second aspect of an embodiment of the present invention provides a method for a base station to transmit an energy saving signal, including:

the base station sends an energy-saving signal to the terminal, the terminal is configured into a DRX discontinuous reception state, the terminal is used for monitoring the energy-saving signal in a DRX period, and corresponding operation is executed according to the time domain position of the energy-saving signal on the DRX period, and the time domain position of the energy-saving signal on the DRX period and the corresponding operation are in one-to-one correspondence.

A third aspect of an embodiment of the present invention provides a terminal, including:

a memory for storing executable instructions of the processor;

a processor configured to configure a terminal to a DRX discontinuous reception state when the processor executes the executable instructions; the terminal monitors an energy-saving signal in a DRX period, and the energy-saving signal is sent to the terminal by a base station; and if the terminal monitors the energy-saving signal in the DRX period, executing corresponding operation according to the time domain position of the energy-saving signal on the DRX period, wherein the time domain position of the energy-saving signal on the DRX period and the corresponding operation are in one-to-one correspondence.

A fourth aspect of an embodiment of the present invention provides a base station, including:

a memory for storing executable instructions of the processor;

a processor; and when the processor runs the executable instruction, the processor is used for sending an energy-saving signal to the terminal, the terminal is configured into a DRX discontinuous reception state, the terminal is used for monitoring the energy-saving signal in a DRX period, and corresponding operation is executed according to the time domain position of the energy-saving signal on the DRX period, and the time domain position of the energy-saving signal on the DRX period and the corresponding operation are in one-to-one correspondence.

In the embodiment of the invention, the terminal is configured into a DRX discontinuous reception state, monitors the energy-saving signal in the DRX period, and executes corresponding operation according to the time domain position of the energy-saving signal on the DRX period, wherein the time domain position of the energy-saving signal on the DRX period and the corresponding operation are in one-to-one correspondence. Under the scene of DRX configuration, the effect of the energy-saving signal in the time domain can instruct the terminal to skip unnecessary PDCCH monitoring according to different specific positions, and can trigger the terminal to execute the preparation process of receiving PDCCH information.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present invention and that other illustrations can be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic diagram of connection between a base station and a terminal according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of monitoring a wake-up signal in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a terminal in DRX discontinuous reception mode, where the wake-up signal value is 1/2.

Fig. 5 is a schematic diagram of monitoring that a wake-up signal value is equal to 0 in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of monitoring a wake-up signal value of-1/2 in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of an execution operation when a wake-up signal value is greater than 0 in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 8 is a schematic diagram of an operation performed when another value of a wake-up signal value greater than 0 is monitored in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of an operation performed when a wake-up signal value equal to 0 is monitored in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 10 is a schematic diagram of an execution operation when a wake-up signal value is less than 0 in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 11 is a schematic diagram of wake-up signal setting at three time domain positions in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 12 is a schematic diagram of monitoring a wake-up signal at a first time domain position in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 13 is a schematic diagram of monitoring a wake-up signal at a second time domain position in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 14 is a schematic diagram of monitoring a wake-up signal at a third time domain position in a terminal DRX discontinuous reception mode according to an embodiment of the present invention.

Fig. 15 is a flowchart of a terminal according to an embodiment of the present invention.

Fig. 16 is a specific flowchart of a terminal according to an embodiment of the present invention.

Fig. 17 is a diagram of a hardware framework according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1, in interaction between the gNB base station and the UE terminal, uu DL (Downlink) is a Downlink transmitted from the base station to the terminal, and UL (Uplink) is an Uplink transmitted from the terminal to the base station. In the communication process, the terminal does not always receive the data of the base station, because the communication service transmitted to the terminal by the base station is usually bursty, only data transmission exists in a certain time period, most of the time, the terminal UE has no data interaction, and if the UE continuously monitors the PDCCH (Physical Downlink Control Channel physical downlink control channel) from the base station at this time, the power consumption is obviously larger.

The PDCCH carries DCI (Downlink Control Information downlink control information) including resource allocation and other control information on one or more UEs. The uplink and downlink resource scheduling information in the network is carried by the PDCCH, and the UE needs to monitor the PDCCH from the base station.

The UE monitors the PDCCH from the base station, and needs to demodulate DCI in the PDCCH first, and then can demodulate the PDSCH belonging to the UE itself on the corresponding resource location, (Physical Downlink Shared Channel physical downlink shared channel), where the PDSCH includes a broadcast message, paging, data of the UE, and so on.

As shown in fig. 2, the DRX (Discontinuous Reception discontinuous reception) of the UE is a power-saving operation mode, so that the UE does not need to enter an idle mode when no data is received, and the power consumption is saved while the data of the UE is guaranteed to be received, thereby guaranteeing the synchronization state with the base station,

the DRX (Discontinuous Reception discontinuous reception) working mode of the UE is as follows, when the UE is in a connected state and has no data transmission, the UE stops monitoring the PDCCH according to the rule of DRX and enters dormancy, thereby achieving the purpose of saving electricity.

One DRX Cycle includes two periods of On Duration and Opportunity for DRX. In the On Duration period, the UE needs to monitor the PDCCH for PDCCH monitoring and PDSCH reception. The period of Opportunity for DRX is DRX sleep time, i.e., the time that the UE has gone to sleep without monitoring PDCCH subframes in order to save power. In the DRX Cycle of fig. 2, the DRX sleep time is represented by a length of sleep.

When the UE listens to PDCCH information in the On Duration period, there are two cases, one is that the PDCCH from the base station is not monitored during this period, and the other is that the PDCCH from the base station is monitored, specifically as follows:

the PDCCH from the base station is not monitored;

if the PDCCH from the base station is not monitored during the On Duration, the sleep is entered to wait for the next cycle to start.

Monitoring a PDCCH from the base station;

if a PDCCH from the base station is monitored during the On Duration, an InactivityTimer is started and decoded during the timer run, while continuing to monitor the PDCCH from the base station. If the decoding is successful and no new PDCCH from the base station is monitored in the timer, waiting for the end of the timer and switching back to the sleep state.

The InactvityTimer timer starts on the condition that the PDCCH is monitored and stops on the condition that the timer times out.

After the UE only monitors the PDCCH information, a timer is started to decode, downlink data service can be processed in time, the UE does not monitor the PDCCH information and goes to sleep, and electric energy can be saved.

As shown in fig. 3, in order to further reduce the power consumption of the UE, a power saving signal is applied. In the DRX configuration scene, the energy-saving signal is used, and the energy-saving signal can be applied in a time domain, so that the base station instructs the terminal to skip unnecessary PDCCH monitoring, and the terminal can be in a sleep state all the time due to the reduction of the unnecessary monitoring, thereby further reducing the power consumption of the terminal.

Because of the low-power consumption wide area characteristic of the UE, the terminal equipment is powered on by a small-capacity battery and is in an idle state without data for most of the time, such as an intelligent water meter, an electric meter and a gas meter which can be accessed into a base station, only the downlink data of the base station is received in a small time period, and no data service exists in other most of the time periods, so that an energy-saving signal mechanism is introduced into the terminal of the NB-IoT (Narrow Band Internet of Things narrowband Internet of things) to further reduce the standby power consumption of the terminal.

The power saving Signal includes a Wake Up Signal and a sleep Signal, the Wake Up Signal (WUS) is configured by a network, and is transmitted to a terminal UE by a base station at a fixed location in a time domain, when the base station has downlink service requiring UE reception, one WUS is transmitted at the fixed location configured by both sides, and when the base station does not have downlink service requiring UE reception, no WUS is transmitted. While the UE needs to monitor WUS at the fixed location, there are two cases where WUS from the base station is monitored, one case where if WUS is received by the UE, the UE performs a corresponding operation during On Duration, that is, monitors PDCCH during On Duration, and another case where WUS from the base station is not monitored, and where the UE performs dormancy during On Duration.

In fig. 3, the UE listens at a fixed location before the DRX cycle, in fig. 3 before the first DRX cycle, the UE listens to the PDCCH for the period On Duration, does not monitor the WUS for the period On Duration, and does not monitor the WUS for the period On Duration in fig. 3, in which case the UE sleeps for the period On Duration, and is indicated by a dashed box for the period On Duration, indicating that the UE is dormant for the period On Duration. The power consumption of the UE may be further reduced.

In some embodiments, in a DRX configuration scenario, the listening process within the DRX cycle may be triggered by a power saving signal. The transmission of the power saving signal includes two aspects, a transmission period and a transmission timing. The period of the power saving signal is determined according to the period of the DRX, and the power saving signal is configured by the base station. And the period of the energy-saving signal is mainly divided into three types:

(1) Greater than the DRX cycle, may generally be set to an integer multiple of the DRX cycle.

(2) Equal to the DRX cycle, there is a fixed interval in time from the On Duration of DRX.

(3) Less than the DRX cycle, typically a fraction of the DRX cycle.

In some embodiments, the period of the power saving signal is equal to the DRX period, which can achieve a balance in both the overhead of the power saving signaling and the reduced power consumption of the UE.

The moment of transmission of the power saving signal characterizes the position of the power saving signal in the time domain. For the wake-up signal WUS, the transmission instant of the power saving signal, i.e. the interval between WUS and the On Duration start instant, is characterized by a wus_offset parameter.

And the sending time of the plurality of wake-up signals is equal to the cycle of DRX, the interval between each wake-up signal and the starting position of the On duration of the DRX is set as a WUS_Offset parameter in one DRX cycle, and the plurality of wake-up signals are configured through the network, so that the UE monitors the WUS signals in a plurality of positions in one DRX cycle, if the WUS is received, the operation corresponding to the position is carried out, and the operation of the UE corresponding to the WUS in different positions is different. If no WUS is received, the UE sleeps and continues listening at the next moment.

In some embodiments, the period of the wake-up signal is equal to the period of the DRX, and the interval between the start of the DRX on duration is defined as wus_offset. Wus_offset is a series of possible values configured by the base station (gNB), the wus_offset value being in particular a proportional value of one time length.

The wus_offset value may be positive, negative, or zero.

When the wus_offset value is a positive number, it specifically indicates that the wake-up signal is in the sleep period of the DRX cycle, for example, the wus_offset value is 1/2, which specifically indicates that the wake-up signal is in the sleep period of the DRX cycle, and the interval between the wake-up signal and the start time of the DRX On duration of the next DRX cycle is 1/2 DRX sleep time.

When the wus_offset value is negative, it specifically indicates that the wake-up signal is in the DRX On duration of the DRX cycle, for example, the wus_offset value is-1/2, and it specifically indicates that the wake-up signal is in the DRX On duration and the interval from the start time of the DRX On duration is 1/2 of the DRX On duration time.

When wus_offset value is zero, it specifically indicates that the wake-up signal is at the beginning of DRX On duration of the DRX cycle.

As shown in fig. 4 to 6, it is assumed that one DRX Cycle time length is 10ms,DRX On duration time length is 4ms, the time length of the DRX sleep period is 6ms, and one DRX Cycle time length is the sum of the DRX On duration time length and the time length of the DRX sleep period.

In fig. 4, wus_offset=1/2, which means that the WUS wake-up signal is in the sleep period of the DRX cycle and is separated from the DRX On duration start time of the next DRX cycle by 1/2 DRX sleep time, the time length of the DRX sleep period is 6ms, and the time length of 1/2 DRX sleep period is 3ms, that is, the interval between the WUS wake-up signal and the DRX On duration start time of the next DRX is 3ms.

In fig. 5, wus_offset=0, which indicates that the WUS wake-up signal is at the DRX On duration start of the DRX cycle, that is, the interval between the WUS wake-up signal and the next DRX On duration start is 0 ms.

In fig. 6, wus_offset= -1/2, specifically shows that the wake-up signal is in the DRX On duration period of the DRX cycle, and is separated from the DRX On duration start time by 1/2 DRX On duration time length, in the figure, the DRX On duration time length is 4ms, and 1/2 DRX On duration time length is 2ms, that is, the interval between the WUS wake-up signal and the DRX On duration start time is 2ms.

In some embodiments, the wake-up signal may have two roles in the time domain, one is that when the base station has a PDCCH subframe, the base station may apply the wake-up signal to instruct the UE to wake up in the DRX On Duration period and let the UE monitor the PDCCH, and the other is that when the base station needs the UE to report CSI (Channel State Information) channel state information, the base station may apply the wake-up signal to instruct the UE to measure reference signals, where the reference signals may include SSB (system information block), TRS (tracking reference signal tracking reference signal), CSI-RS (Channel State Information reference signal channel state information reference signal), and then instruct the UE to receive system information and report CSI channel state information. Thus, the base station can obtain timely and effective CSI at the beginning of the DRX period, which is beneficial to data transmission.

In the current connection state DRX period, if the UE is required to measure auxiliary reference signals (CSI-RS, TRS, SSB, etc.), and processes of channel tracking, reporting of CSI information, etc. are performed, if no wake-up signal is used for indicating the UE to perform reference signal measurement, the UE can measure the reference signals in DRX duration and report the CSI on a PUCCH or a PUSCH. This limitation results in the gNB not obtaining timely and efficient CSI at the beginning of the DRX cycle.

In some embodiments, the wake-up signal may also be used to trigger the UE to receive the auxiliary reference signal before the DRX on duration starts, and then the UE performs a channel tracking and CSI reporting procedure to prepare for receiving PDCCH information during the DRX on duration.

The UE does not necessarily need to perform the preparation procedure every DRX cycle. For example CSI reporting, the UE does not always send CSI. Current CSI reporting includes periodic reporting and aperiodic reporting. The periodic CSI reporting is configured by a base station RRC and reported in a certain period; and reporting the aperiodic CSI according to the CSI request sent by the base station. If the UE performs the preparation process every time it receives the wake-up signal, it may perform unnecessary listening and waste power consumption.

In order to better adapt to the wireless quality environment, the terminal needs to report the downlink channel quality information to the eNodeB through the Channel State Information (CSI), and the eNodeB can adjust parameters and issue the parameters; when system information changes, the eNodeB needs to inform the UE to receive a new communication information block; and the UE needs to carry out channel tracking to judge whether the signal is at the boundary of channel switching or not, and in the current RRC connection state, the UE needs to carry out a series of preparation processes of data transmission besides PDCCH detection and PDSCH reception, so that the monitoring time of the PDCCH is relatively reduced.

In this embodiment, the preparation process of data transmission by the UE in the sleep period is triggered by the energy-saving signal, so that the preparation process of data transmission and the detection of the PDCCH can be separated independently, and the detection rate of the PDCCH can be improved.

Meanwhile, the PDCCH information may also be received in the late stage of DRX on duration. It is therefore necessary for the terminal to wake up inside the DRX on duration, avoiding listening during the whole DRX on duration.

The network selects a transmit wakeup signal (WUS) between a plurality of selectable power save signal locations by the base station based on traffic demand. The WUS enables the terminal to monitor WUS signals at a plurality of optional positions, the network selects one position to send WUS among the plurality of optional positions according to different service requirements, and the WUS has the function corresponding to the position.

When the network needs the preparation processes of reporting CSI, receiving SSB and the like, the network selects WUS_Offset >0 to send WUS, namely wakes up the UE in the sleep period, and monitors the WUS. When the UE monitors the WUS, the UE wakes up and receives SSB and TRS, measures the CSI-RS, carries out channel tracking, reports the CSI and monitors PDCCH in a DRX duration period.

As shown in fig. 7, the wus_offset value is positive, and during the first DRX Cycle, after the UE detects the WUS signal during the sleep period, the UE wakes up for a period of time pre_on_duration, which is a time window during which the UE wakes up to receive SSB and TRS during the sleep period, and measures the CSI-RS.

And if the UE does not reach the DRX Duration starting time of the second DRX period, the UE enters a dormant state, and wakes up monitoring until the DRX Duration starting time is reached, and the UE performs PDCCH detection and PDSCH reception.

As shown in fig. 8, the wus_offset value is a positive number, and the length of the value is set such that the UE wakes up to receive SSB, TRS during the sleep period, and directly reaches the next DRX on duration after the preparation procedure of measuring CSI-RS, etc.

During the first DRX Cycle, after the UE detects the WUS signal in the dormant period, the UE wakes up a period of Pre_ON_duration, when the Pre_ON_duration is ended and the UE just reaches the DRX Duration starting time of the second DRX period, the UE directly enters the DRX Duration wake-up monitoring, and the UE performs PDCCH detection and PDSCH reception.

As shown in fig. 9, wus_offset=0 is selected when the network does not need the preparation process of the terminal reporting CSI, receiving SSB, etc., and there is PDCCH down at the beginning of DRX on duration.

During the first DRX Cycle, WUS_Offset is 0, if the UE receives WUS, the UE wakes up in the second DRX duration, and performs PDCCH detection and PDSCH reception.

Wus_offset is 0, indicating that the UE is required to monitor PDCCH detection and PDSCH reception within the DRX on duration.

As shown in fig. 10, when the network does not need the terminal to report CSI, receive SSB, etc., and the base station will issue PDCCH information in the second half of the DRX on duration, wus_offset <0 is selected.

The UE is in the DRX Onduration, if the WUS is received, the PDCCH is awakened to monitor at the moment, so that the UE is still in a dormant state within the DRX Onduration time before the WUS signal is received, and monitoring during the whole DRX Onduration period is avoided.

As shown in fig. 11, the locations of possible wake-up signals may be set to three locations within the DRX cycle. In the case where the UE does not receive the WUS signal, the UE is always in a sleep state.

The network selects one of the positions according to the requirement, and the base station transmits the WUS signal. If the UE listens to the wake-up signal at a position wus_offset, the UE wakes up from the sleep state, performs a corresponding operation at the position, and does not receive the WUS signal at the subsequent wus_offset time of the present period, continues to sleep, and continues to listen at the wus_offset time of the next period.

The position of the wake-up signal is set to three positions, which are respectively:

WUS_Offset>0，WUS_Offset=0，WUS_Offset<0。

as shown in fig. 12, when the UE receives WUS signal at the first time position, i.e., wus_offset >0, the UE wakes up for a period of time pre_on_duration, receives SSB and TRS during the period of time pre_on_duration, measures CSI-RS, performs channel tracking, reports CSI, monitors PDCCH during the DRX Duration period, and timely receives information.

The UE is no longer listening for WUS signals at the other two subsequent time positions wus_offset=0 and wus_offset <0 times. The terminal can keep a sleep state because the terminal does not need to be frequently awakened, which is beneficial to saving power consumption of the terminal,

as shown in fig. 13, if the UE does not monitor the WUS signal at the first time location, i.e., wus_offset >0, the UE continues to sleep and continues to monitor the WUS signal at the second time location, i.e., wus_offset=0, and if the UE monitors the WUS signal at the wus_offset=0, the UE performs a corresponding operation, i.e., monitors the PDCCH during the next DRX on duration period, receives information in time, and does not monitor the WUS signal at the third time location, i.e., wus_offset < 0;

as shown in fig. 14, the UE continues to sleep without monitoring WUS signals in the first time position, i.e., wus_offset >0, and in the second time position, i.e., wus_offset=0, and continues to monitor WUS signals in the third time position, i.e., wus_offset <0, and if the UE monitors WUS signals in wus_offset <0, the UE performs a corresponding operation, i.e., wakes up to monitor PDCCH from the moment WUS are received, so that the DRX duration is only waken from the moment WUS are received, and if WUS are not received, the UE continues to sleep.

Since the WUS wake-up signal is only an indication information and does not carry other bit information, in the embodiment, if the wake-up signal positions are set to 3, that is, three wake-up signal positions are set, the UE monitors the wake-up signal for at most three times in one DRX cycle, and the energy saved by the terminal is far greater than the energy consumed by the terminal in monitoring the wake-up signal, which is beneficial to saving energy consumption by the terminal.

Figure 15 is a flow chart of one embodiment of a terminal.

The terminal is configured with a DRX mode and a power-saving signal mode, the number of the power-saving signals can be agreed between the terminal and the base station, the specific time position of each power-saving signal and the corresponding operation of the terminal corresponding to each power-saving signal are represented by a parameter WUS_Offset, and the value of the WUS_Offset can be multiple.

The terminal monitors whether the WUS transmitted by the base station exists or not at the moment defined by the value of the WUS_Offset.

The terminal monitors the energy-saving signal according to whether the energy-saving signal is monitored at a preset position set by the energy-saving signal, and executes corresponding operations, wherein the corresponding operations can be that the terminal receives SSB and TRS, measures CSI-RS, carries out channel tracking and reports CSI, the preparation process before the terminal receives base station data is executed, the accuracy of data transmission between the terminal and the base station is improved, or the terminal is directly awakened to monitor PDCCH in the next DRX duration period, and if the energy-saving signal is not monitored, the terminal continues to sleep.

As shown in fig. 16, the location where the terminal receives the wake-up signal may be set to at least three time locations, respectively: wus_offset1, wus_offset2, wus_offset3,

one of these is wus_offset1>0, wus_offset2=0, wus_offset3<0.

Judging whether the terminal receives a WUS wake-up signal at the moment of WUS_Offset 1;

if the terminal receives the WUS wake-up signal at the moment of WUS_Offset1, the terminal wakes up a period of time to be characterized by a parameter Pre_ON_duration, and the terminal receives SSB and TRS, measures the CSI-RS, performs channel tracking and reports the CSI during the period of time Pre_ON_duration;

judging whether the next DRX Onduration period is reached after the period of Pre_ON_Duration;

if the next DRX duration period is reached, the method directly enters the DRX duration, monitors the PDCCH and timely receives information.

If the next DRX duration period is not reached, the sleep is entered, the next DRX duration period is reached, the wake-up is entered into the DRX duration, the PDCCH is monitored, and information is received in time.

If the terminal does not receive the WUS wake-up signal at wus_offset1 time, the terminal continues to sleep.

Then judging whether the terminal receives a WUS wake-up signal at the moment of WUS_Offset 2;

if the terminal receives the WUS wake-up signal at the moment of WUS_Offset2, the terminal wakes up during the DRX Onduration period, monitors the PDCCH and timely receives information.

If the terminal does not receive the WUS wake-up signal at wus_offset2 time, the sleep is continued.

Then judging whether the terminal receives a WUS wake-up signal at the moment of WUS_Offset 3;

if the terminal receives the WUS wake-up signal at the moment of WUS_Offset3, the terminal wakes up from the moment of receiving the WUS wake-up signal in the internal period of DRX Onduration, monitors PDCCH and timely receives information.

If the terminal is at wus_offset3 time or has not received a WUS wake-up signal, the terminal continues to sleep.

Based on the same inventive concept, the embodiment of the invention also provides an electronic device such as a terminal and a base station, and the like, because the corresponding method of the device is the method in the embodiment of the invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device can refer to the implementation of the method, and the repetition is omitted.

Fig. 17 is a block diagram of electronic device hardware.

Comprising a transceiver 401, a central processor 402, a memory 403, an antenna 404 connected to the transceiver 401, a peripheral interface 405 connected to the central processor, and a power supply system 406 for providing power to the electronic device.

In some embodiments, there is provided a terminal comprising:

a memory for storing executable instructions of the processor;

a processor; when the processor runs the executable instructions, the terminal is configured to be in a DRX discontinuous reception state; the terminal monitors an energy-saving signal in a DRX period, and the energy-saving signal is sent to the terminal by a base station; and if the terminal monitors the energy-saving signal in the DRX period, executing corresponding operation according to the time domain position of the energy-saving signal on the DRX period, wherein the time domain position of the energy-saving signal on the DRX period and the corresponding operation are in one-to-one correspondence.

In some embodiments, there is provided a base station comprising:

a memory for storing executable instructions of the processor;

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processing unit of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A method for a terminal to receive a power saving signal, comprising:

the terminal is configured into a DRX discontinuous reception state;

if the terminal monitors the energy-saving signal in the DRX period, executing corresponding operation according to the time domain position of the energy-saving signal On the DRX period, wherein the time domain position of the energy-saving signal On the DRX period and the corresponding operation are in one-to-one correspondence, the energy-saving signal is a WUS wake-up signal, the time domain position of the energy-saving signal On the DRX period is the interval between the WUS wake-up signal and the starting moment of the On Duration of the DRX period, and the interval is represented by a WUS_Offset parameter;

if the wus_offset value is 0, the terminal monitors a PDCCH physical downlink control channel during a DRX cycle On Duration;

if the wus_offset value is smaller than 0, the terminal monitors the PDCCH physical downlink control channel in a partial period of time during the DRX cycle On Duration;

if wus_offset value is greater than 0, the terminal wakes up in the DRX sleep period and listens to the PDCCH physical downlink control channel during the next DRX cycle On Duration.

2. The method as recited in claim 1, further comprising:

3. The method of claim 1, wherein the terminal further comprises, after the waking step during the DRX sleep period:

after waking up, the terminal enters a pre_ON_duration period, and receives an SSB system information block and a TRS tracking reference signal in the period, and measures a CSI-RS channel state information reference signal.

4. A method for a base station to transmit a power save signal, comprising:

the base station sends an energy-saving signal to the terminal, wherein the terminal is configured into a DRX discontinuous reception state, is used for the terminal to monitor the energy-saving signal in a DRX period, and executes corresponding operation according to the time domain position of the energy-saving signal On the DRX period, the time domain position of the energy-saving signal On the DRX period and the corresponding operation are in one-to-one correspondence, the energy-saving signal is a WUS wake-up signal, the time domain position of the energy-saving signal On the DRX period is the interval between the WUS wake-up signal and the starting moment of the On Duration of the DRX period, and is characterized by a WUS_Offset parameter;

5. A terminal, comprising:

a memory for storing executable instructions of the processor;

a processor configured to configure a terminal to a DRX discontinuous reception state when the processor executes the executable instructions; the terminal monitors an energy-saving signal in a DRX period, and the energy-saving signal is sent to the terminal by a base station; if the terminal monitors the energy-saving signal in the DRX period, executing corresponding operation according to the time domain position of the energy-saving signal On the DRX period, wherein the time domain position of the energy-saving signal On the DRX period and the corresponding operation are in one-to-one correspondence, the energy-saving signal is a WUS wake-up signal, the time domain position of the energy-saving signal On the DRX period is the interval between the WUS wake-up signal and the starting moment of the On Duration of the DRX period, and the interval is represented by a WUS_Offset parameter;

6. A base station, comprising:

a memory for storing executable instructions of the processor;

the base station sends an energy-saving signal to the terminal when the processor runs the executable instruction, the terminal is configured into a DRX discontinuous reception state and is used for monitoring the energy-saving signal in a DRX period and executing corresponding operation according to the time domain position of the energy-saving signal On the DRX period, the time domain position of the energy-saving signal On the DRX period and the corresponding operation are in one-to-one correspondence, the energy-saving signal is a WUS wake-up signal, and the time domain position of the energy-saving signal On the DRX period is the interval between the WUS wake-up signal and the On Duration starting time of the DRX period and is characterized by a WUS_Offset parameter;