CN111586812A

CN111586812A - Method for receiving energy-saving signal by terminal and terminal

Info

Publication number: CN111586812A
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: 2020-08-25
Anticipated expiration: 2039-03-22
Also published as: CN111586812B

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 to be in a DRX discontinuous receiving state, energy-saving signals are monitored in a DRX period, the energy-saving signals are sent to the terminal by a base station, if the terminal monitors the energy-saving signals in the DRX period, corresponding operation is executed according to the time domain position of the energy-saving signals on the DRX period, and the time domain position of the energy-saving signals on 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 saving and service 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 a device for a terminal to receive an energy saving signal.

Background

The kind and the quantity of intelligent terminal equipment increase rapidly, like intelligent bracelet, intelligent wrist-watch, smart mobile phone, wearable equipment etc. these intelligent terminal equipment are equipped with the battery through self and are worked, and the energy capacity of battery is fixed.

The NR (New Radio, New air interface) in the 5G era supports the characteristics of high data rate, large bandwidth, low delay and the like, and requires higher Radio frequency processing capability and baseband processing capability to process a complex process compared with the LTE (Long Term Evolution) in the 4G era. NR UEs (User Equipment) will consume more power than LTE UEs. In addition, NR supports more frequent control/data monitoring than LTE. For example, if the SCS (subcarrier) interval is 30KHz, the complexity and power consumption of NR UEs will be increased twice compared to LTE UEs for slot level monitoring, and if the UE configures mini slots, the power consumption of the UE will be higher, and therefore, the power consumption of the terminal device needs to be reduced.

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 a terminal to receive an energy-saving signal and the terminal, which are used for better considering the energy saving of terminal equipment and the balance problem of service data processing.

In a first aspect of the embodiments of the present invention, a method for a terminal to receive an energy saving signal is provided, where the method includes:

the terminal is configured to 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 in the DRX period, wherein the time domain position of the energy-saving signal in the DRX period is in one-to-one correspondence with the corresponding operation.

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 save signal is a WUS wake-up signal, and a temporal position of the power save signal On the DRX cycle is an interval between the WUS wake-up signal and a DRX cycle On Duration start time, characterized by a WUS _ Offset parameter.

In accordance with some embodiments of the present invention,

and the WUS _ Offset value is 0, the terminal monitors a PDCCH physical downlink control channel during the DRX period On Duration.

And if the WUS _ Offset value is less than 0, the terminal monitors the PDCCH physical downlink control channel in a part of time period during the DRX period On Duration.

And if the WUS _ Offset value is larger than 0, the terminal wakes up in the DRX sleep period and monitors a PDCCH physical downlink control channel in the next DRX period On Duration. Preferably, the terminal enters the Pre _ ON _ Duration period after waking up, receives the SSB system information block and the TRS tracking reference signal in the period, and measures the CSI-RS channel state information reference signal.

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

the base station sends an energy-saving signal to a terminal, the terminal is configured to be in 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, 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, when the processor executes the executable instructions, for a terminal to configure to 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 in the DRX period, wherein the time domain position of the energy-saving signal in the DRX period is in one-to-one correspondence with the corresponding operation.

A fourth aspect of the embodiments 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 the base station to send an energy-saving signal to the terminal, and the terminal is configured to be in a DRX discontinuous receiving state and used for the terminal to monitor the energy-saving signal in a DRX period and execute corresponding operation according to the time domain position of the energy-saving signal in the DRX period, wherein the time domain position of the energy-saving signal in the DRX period is in one-to-one correspondence with the corresponding operation.

In the embodiment of the invention, a terminal is configured to be in a DRX discontinuous receiving state, monitors an 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, wherein the time domain position of the energy-saving signal on the DRX period is in one-to-one correspondence with the corresponding operation. The terminal can instruct the terminal to skip unnecessary PDCCH monitoring according to different specific positions under the scene of DRX configuration under the action of the energy-saving signal in a time domain, and can also trigger the terminal to execute a preparation process for receiving PDCCH information.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive exercise.

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

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

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

Fig. 4 is a schematic diagram illustrating that the value of the wake-up signal monitored by the terminal in the DRX discontinuous reception mode is 1/2 according to an embodiment of the present invention.

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

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

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

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

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

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

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

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

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

Fig. 14 is a schematic diagram of monitoring a wake-up signal in a third time domain position in a DRX discontinuous reception mode of a terminal 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 hardware framework diagram provided by an embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, in the 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 by the base station to the terminal is usually bursty, there is data transmission only in a certain time period, and most of the time, the terminal UE has no data interaction, and if the UE is still continuously monitoring a PDCCH (Physical Downlink Control Channel) from the base station at this time, obviously, the power consumption is relatively large.

The PDCCH carries DCI (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 the DCI in the PDCCH first, and then can demodulate the PDSCH (Physical Downlink Shared Channel) belonging to the UE on the corresponding resource location, where the PDSCH includes broadcast messages, paging, data of the UE, and the like.

As shown in fig. 2, DRX (Discontinuous Reception) of the UE is a power-saving operation mode, which can enable the UE not to enter an idle mode when no data is received, and ensure that the UE receives data while saving power consumption, thereby ensuring a synchronization state with the base station,

the DRX (Discontinuous Reception) operation mode of the UE is as follows, when the UE is in a connected state, if there is no data transmission, the UE stops monitoring the PDCCH according to the DRX rule and enters into sleep, thereby achieving the purpose of power saving.

One DRX Cycle (DRX Cycle) contains 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 when the UE goes to sleep without monitoring PDCCH subframes for power saving. In the DRX Cycle of fig. 2, the DRX sleep time is represented by a length of sleep.

When the UE monitors the PDCCH information in the On Duration period, two situations occur, one is that the PDCCH from the base station is not monitored in the On Duration period, and the other is that the PDCCH from the base station is monitored, which is specifically as follows:

no PDCCH from the base station is monitored;

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

Monitoring a PDCCH from a base station;

if a PDCCH from the base station is monitored during the On Duration, an InactivetyTimer is started and decoded during the running period of the timer, and meanwhile, the PDCCH from the base station is monitored continuously. If the decoding is successful and no new PDCCH from the base station is monitored in the timer, the timer is waited to end, and the state is switched back to the sleep state.

The inactivytimeter timer starts if the PDCCH is monitored, and stops if the timer expires.

The UE can start the timer to decode after only monitoring the PDCCH information, can process downlink data service in time, and can enter sleep without monitoring the PDCCH information, thereby saving electric energy.

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

Due to the characteristic of the wide area with low power consumption of the UE, the terminal device is powered by a small-capacity battery and is in a data-free idle state for most of the time, for example, a smart water meter, an electric meter and an air meter of the base station can be accessed, only a few time periods receive downlink data of the base station, and most of other time periods have no data service, so an energy-saving signal mechanism is introduced into the terminal of NB-IoT (Narrow Band Internet of things) to further reduce the standby power consumption of the terminal.

The energy-saving Signal comprises a Wake-Up Signal and a sleep Signal, the Wake-Up Signal (WUS) is configured by a network and is sent to terminal UE by a base station at a fixed position in a time domain, when downlink service is required to be received by the UE, the base station sends a WUS at the fixed position configured by the base station and the UE, and when the base station does not have the downlink service to be received by the UE, the WUS is not sent. However, the UE needs to monitor the WUS at the fixed location, and there are two cases, one is to monitor the WUS from the base station at the fixed location, if the UE receives the WUS, the UE performs a corresponding operation during the On Duration, that is, monitors the PDCCH during the On Duration, and the other is to monitor the WUS from the base station, in which case the UE sleeps during the On Duration.

In fig. 3, the UE monitors at a fixed location before the DRX cycle, and if the UE monitors the WUS before the first DRX cycle in fig. 3, the UE monitors the PDCCH and performs PDCCH detection and PDSCH reception during the On Duration, and if the UE does not monitor the WUS before the second DRX cycle in fig. 3, the UE sleeps during the On Duration, and since the UE is dormant, the On Duration is indicated by a dotted frame, indicating that the UE is dormant during this time period. The energy consumption of the UE can be further reduced.

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

(1) larger than the DRX cycle, it can be set to an integer multiple of the DRX cycle in general.

(2) Equal to the DRX cycle, at 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 between the overhead of power saving signaling and the UE's reduced power consumption.

The transmission time of the power saving signal characterizes the position of the power saving signal in the time domain. For the wake-up signal WUS, the WUS _ Offset parameter is used to characterize the transmission timing of the power save signal, i.e., the interval between the WUS and the On Duration start timing.

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

In some embodiments, the period of the wake-up signal is equal to the period of DRX, and the interval from the DRX on start time is defined as WUS _ Offset. WUS _ Offset is a series of possible values configured by the base station (gNB), and is specifically a proportional value of one time length.

The WUS _ Offset value may be positive, negative, or zero.

When the WUS _ Offset value is positive, it specifically indicates that the wake-up signal is in the sleep period of the DRX cycle, and if the WUS _ Offset value is 1/2, it specifically indicates that the wake-up signal is in the sleep period of the DRX cycle, and the interval from the DRX On duration start time of the next DRX cycle is 1/2 DRX sleep times.

When the WUS _ Offset value is negative, it indicates that the wake-up signal is in the DRX On duration of the DRX cycle, and when WUS _ Offset value is-1/2, it indicates that the wake-up signal is in the DRX On duration and has an interval of 1/2 DRX On duration from the DRXon duration start time.

When the WUS _ Offset value is zero, it specifically indicates that the wake-up signal is at the DRX On duration start time of the DRX cycle.

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

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

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

In fig. 6, WUS _ Offset = -1/2 specifically indicates that the wake-up signal is in the DRX On duration of the DRX cycle, and the interval from the DRX On duration start time is 1/2 DRX On duration, where the DRX On duration is 4ms, and 1/2 DRX On duration is 2ms, that is, the interval between the WUS wake-up signal and the DRX On duration start time is 2 ms.

In some embodiments, the wake-up signal may have two functions in the time domain, where, firstly, 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 and allow the UE to monitor the PDCCH, and secondly, 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 perform reference signal measurement, where the reference signal may include an SSB (system information block), a TRS (tracking reference signal), a CSI-RS (Channel State information reference signal), and then instruct the UE to receive the system information and report the CSI Channel State information. Therefore, the base station can obtain timely and effective CSI at the beginning of the DRX period, and data transmission is facilitated.

In the current connection state DRX cycle, if the UE needs to measure auxiliary reference signals CSI-RS, TRS, SSB, etc.) and perform processes such as channel tracking, reporting CSI information, etc., if there is no wake-up signal to indicate the UE to measure the reference signals, the UE must measure the reference signals in the DRX on duration and report the CSI on a PUCCH or a PUSCH. This limitation results in the gNB not being able to obtain timely valid 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 operation starts, and then the UE performs channel tracking and CSI reporting processes to prepare for receiving PDCCH information during the DRX operation.

The UE does not necessarily need to perform this preparation procedure every DRX cycle. For example, CSI reporting, the UE does not always send CSI. Currently, CSI reporting includes both periodic reporting and aperiodic reporting. The periodic CSI is reported by the base station RRC configuration and reported in a certain period; and the aperiodic CSI reporting is carried out according to the CSI request sent by the base station. If the UE performs the above preparation procedure every time it receives the wake-up signal, unnecessary listening may be performed, thereby wasting power consumption.

In order to better adapt to a wireless quality environment, a terminal needs to report downlink channel quality information to an eNodeB through Channel State Information (CSI), and the eNodeB adjusts and issues parameters; when the system information is changed, the eNodeB needs to inform the UE to receive a new communication information block; and also needs to track the channel, and determines whether the signal is at the boundary of channel switching, and in the current RRC connected state, during DRX operation, the UE needs to perform a series of preparation processes for data transmission in addition to PDCCH detection and PDSCH reception, which relatively reduces the PDCCH monitoring time.

In the embodiment, the preparation process of data transmission of 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, and the detection rate of the PDCCH is improved.

Meanwhile, the PDCCH information may also be received at a later stage of DRX on duration. Therefore, the terminal needs to wake up inside the DRX on duration to avoid monitoring during the entire DRX on duration.

The network selects a transmit wakeup signal (WUS) among a plurality of selectable energy saving signal positions by the base station according to service requirements. The WUS enables the terminal to monitor the WUS signals at a plurality of optional positions, the network selects one position to send the WUS among the plurality of optional positions according to different service requirements, and the WUS has the corresponding function of the position.

When the network needs the terminal to report CSI, receive the preparation processes of SSB and the like, the WUS _ Offset >0 is selected to send the WUS, namely the UE is awakened in the sleep period to monitor the WUS. And when the UE monitors the WUS, the UE wakes up and receives the SSB and the TRS, measures the CSI-RS, carries out channel tracking, reports the CSI and monitors the PDCCH in a DRX (discontinuous reception) duration period.

As shown in fig. 7, the WUS _ Offset value is a positive number, and during the first DRX Cycle, after the UE detects the WUS signal in the sleep period, the UE wakes up for a period of time Pre _ ON _ Duration, which is a time window for the UE to wake up to receive SSB and TRS in the sleep period and measure the CSI-RS.

And the Pre _ ON _ Duration is finished, if the UE does not reach the starting time of the DRX Duration of the second DRX period, the UE enters a dormant state, monitoring is not awakened until the DRX Duration is reached, and the UE carries out PDCCH detection and PDSCH receiving.

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

During the first DRX Cycle, after the UE detects a WUS signal in the sleep period, the UE wakes up for a period of time Pre _ ON _ Duration, and when the Pre _ ON _ Duration is finished and the UE just reaches the starting time of the DRX Duration 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, when the network does not need the preparation processes of reporting CSI and receiving SSB by the terminal and there is PDCCH delivery at the drxoduration start time, WUS _ Offset =0 is selected.

During the first DRX Cycle, WUS _ Offset is 0, and if the UE receives a WUS, the UE wakes up in the second DRX duration to perform PDCCH detection and PDSCH reception.

WUS _ Offset is 0, indicating that the UE needs to monitor PDCCH detection and PDSCH reception within DRX duration.

As shown in fig. 10, when the network does not need the processes of reporting CSI and receiving SSB by the terminal, and the base station issues PDCCH information in the second half of the drxon duration, WUS _ Offset <0 is selected.

The UE wakes up to monitor the PDCCH at the moment within the DRX duration if the WUS is received, so that the UE is still in a dormant state within the DRX duration before the WUS signal is received, and the monitoring in the whole DRXOduration period is avoided.

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

The network selects one of the positions to transmit the WUS signal by the base station according to the requirement. If the UE monitors the wake-up signal at a certain position, the UE wakes up from the sleep state to execute corresponding operation at the position, and the UE continues to sleep after the period and continues monitoring at the WUS _ Offset time.

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 a WUS signal at a first time position, that is, WUS _ Offset >0, the UE performs corresponding operations, that is, the UE wakes up for a period of time Pre _ ON _ Duration, receives SSB and TRS, measures CSI-RS, performs channel tracking, reports CSI, monitors PDCCH in a DRX ON Duration period, and receives information in time.

The UE does not listen to the WUS signal any more at the subsequent two other time positions, WUS _ Offset =0 and WUS _ Offset < 0. Because the terminal does not need to be awakened frequently, the terminal can keep a sleep state, the power consumption of the terminal is saved,

as shown in fig. 13, the UE does not hear the WUS signal at the first time position, i.e., the time WUS _ Offset >0, the UE continues to sleep and continues to hear the WUS signal at the second time position, i.e., the time WUS _ Offset =0, and if the UE hears the WUS signal at the time WUS _ Offset =0, the UE performs the corresponding operation, i.e., monitors the PDCCH for the next DRX duration period, receives information in time, and does not hear the WUS signal any more at the third time position, i.e., the time WUS _ Offset < 0;

as shown in fig. 14, the UE does not monitor the WUS signal at the first time position, i.e., WUS _ Offset >0, and at the second time position, i.e., WUS _ Offset =0, the UE continues to sleep, and continues to monitor the WUS signal at the third time position, i.e., WUS _ Offset <0, and performs a corresponding operation if the UE monitors the WUS signal at the time WUS _ Offset <0, i.e., wakes up to monitor the PDCCH from the moment the WUS is received, so that the UE wakes up only after the WUS is received during the on DRX duration period, and continues to sleep if the WUS is not received.

Because the WUS wake-up signal is only used as indication information and does not carry other bit information, in the embodiment, when 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 at most three times in one DRX cycle, and the energy saved by the terminal is much 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 diagram of one embodiment of a terminal.

The terminal is configured with a DRX mode and an energy-saving signal mode, the number of energy-saving signals, the specific time position of each energy-saving signal and the corresponding operation of the terminal corresponding to each energy-saving signal can be agreed between the terminal and the base station, the specific time position of each energy-saving signal is represented by a parameter WUS _ Offset, and the number of the values of the WUS _ Offset can be multiple.

And the terminal monitors whether the WUS sent by the base station exists at the time defined by the value of the WUS _ Offset.

The terminal executes corresponding operations according to whether the energy-saving signal is monitored at a preset position set by the energy-saving signal or not, wherein the corresponding operations can be operations of receiving the SSB and the TRS by the terminal, measuring the CSI-RS, tracking a channel and reporting the CSI, and the preparation process before receiving the base station data is executed, which is beneficial to improving the accuracy of data transmission between the terminal and the base station, and can also be operations of directly waking up the terminal to monitor the PDCCH in the next DRX on duration period, and if the energy-saving signal is not monitored, the terminal continues to sleep.

As shown in fig. 16, the position of the terminal receiving the wake-up signal may be set to at least three time positions, which are: 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 awakening signal at the time of WUS _ Offset 1;

if the terminal receives a WUS awakening signal at the time of WUS _ Offset1, the terminal awakens for a period of time and is characterized by a parameter Pre _ ON _ Duration, and the terminal receives SSB and TRS, measures CSI-RS, tracks a channel and reports CSI during the period of time Pre _ ON _ Duration;

judging whether the next DRX ON period is reached after the period of Pre _ ON _ Duration;

and if the next DRX duration period is reached, directly entering the DRX duration, monitoring the PDCCH and receiving information in time.

And if the next DRX period is not reached, entering the sleep mode, and waking up to enter the DRX period again after the next DRX period is reached, monitoring the PDCCH and receiving information in time.

If the terminal does not receive the WUS wake-up signal at the time WUS _ Offset1, it continues to sleep.

Then judging whether the terminal receives a WUS awakening signal at the time of WUS _ Offset 2;

if the terminal receives the WUS wakeup signal at the time of WUS _ Offset2, the terminal wakes up during the DRX duration, monitors the PDCCH, and receives information in time.

If the terminal does not receive the WUS wake-up signal at the time WUS _ Offset2, it continues to sleep.

Then judging whether the terminal receives a WUS awakening signal at the time of WUS _ Offset 3;

if the terminal receives the WUS wakeup signal at the time of WUS _ Offset3, the terminal wakes up from the time of receiving the WUS wakeup signal during the DRX duration, monitors the PDCCH, and receives information in time.

If the terminal does not receive the WUS wake-up signal at the time of WUS _ Offset3, it continues to sleep.

Based on the same inventive concept, the embodiment of the present invention further provides an electronic device such as a terminal and a base station, and as the method corresponding to the device is the method in the embodiment of the present invention, and the principle of the device for solving the problem is similar to the method, the implementation of the device may refer to the implementation of the above method, and repeated details are not repeated.

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

Including a transceiver 401, a central processor 402, a memory 403, an antenna 404 coupled to the transceiver 401, a peripheral interface 405 coupled to the central processor, and a power 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 executes the executable instructions, configuring the terminal to 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 in the DRX period, wherein the time domain position of the energy-saving signal in the DRX period is in one-to-one correspondence with the corresponding operation.

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

a memory for storing executable instructions of the processor;

As will be appreciated by one skilled in the art, 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, 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

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

the terminal is configured to a DRX discontinuous reception state;

2. The method of claim 1, further comprising:

3. The method according to claim 1 or 2,

the power-save 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 time of the DRX period On Duration, and is characterized by a WUS _ Offset parameter.

4. The method according to claim 3, wherein if the terminal monitors the power saving signal in the DRX cycle, the corresponding operation is performed according to the time domain position of the power saving signal in the DRX cycle, specifically:

5. The method according to claim 3, wherein if the terminal monitors the power saving signal in the DRX cycle, the corresponding operation is performed according to the time domain position of the power saving signal in the DRX cycle, specifically:

6. The method according to claim 3, wherein if the terminal monitors the power saving signal in the DRX cycle, the corresponding operation is performed according to the time domain position of the power saving signal in the DRX cycle, specifically:

and if the WUS _ Offset value is larger than 0, the terminal wakes up in a DRX sleep period and monitors a PDCCH physical downlink control channel in the next DRX period OnDuration period.

7. The method of claim 6, wherein after the terminal performs the wake-up step during the DRX sleep period, the method further comprises:

and entering a Pre _ ON _ Duration period after awakening, receiving an SSB system information block and a TRS tracking reference signal by the terminal in the period, and measuring a CSI-RS channel state information reference signal.

8. A method for transmitting a power saving signal from a base station, comprising:

9. A terminal, comprising:

a memory for storing executable instructions of the processor;

10. A base station, comprising:

a memory for storing executable instructions of the processor;

and the processor is used for sending an energy-saving signal to the terminal by the base station when the processor runs the executable instruction, wherein the terminal is configured to be in a DRX discontinuous receiving state and used for monitoring the energy-saving signal in a DRX period by the terminal and executing corresponding operation 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 is in one-to-one correspondence with the corresponding operation.