Patent Description:
<FIG> is a schematic diagram illustrating how a wake-up signal works. As illustrated by <FIG>, when User Equipment (hereinafter "UE") is idle, it enters a sleep mode where very low power is consumed. When the network side apparatus needs to transmit downlink data to the UE, it transmits a wake-up signal to the UE, and the UE wakes up upon reception of the wake-up signal to transmit and receive data with the network side apparatus. The UE enters the sleep mode after completing transmission and reception of the data.

According to an existing paging mechanism of the Long Term Evolution (hereinafter "LTE") system, UE wakes up periodically to receive a paging message according to the Discontinuous Reception (hereinafter "DRX") scheme. The paging cycle of the UE using the DRX paging scheme is a UE-specific paging cycle of a core network, or a default paging period broadcasted by a base station, whichever is shorter. The paging cycle of UE using the extended DRX (hereinafter "eDRX") scheme involves an eDRX paging cycle of the core network and a Paging Time Window (hereinafter "PTW"). And in a PTW, the UE monitors a paging message according to a default paging cycle broadcasted by the base station. The paging cycles of the DRX and the eDRX schemes are different. <FIG> is a schematic diagram of DRX paging, and <FIG> is a schematic diagram of eDRX paging. A paging message can be transmitted via a radio interface as illustrated in <FIG>.

In the LTE system, a paging radio frame and a paging sub-frame of the UE in the DRX scheme are calculated as follows.

For the paging radio frame: SFN mod T= (T div N)*(UE_ID mod N).

For the paging sub-frame: i_s = floor(UE_ID/N) mod Ns.

Where T is the DRX paging cycle, nB is the paging density, N= min(T, nB), Ns= max(<NUM>,nB/T), and UE_ID= IMSI mod <NUM>.

The time when the UE shall monitor a paging message can be calculated according to the equations above.

A drawback of the existing technology lies in that the UE shall wake up periodically to monitor a paging message, wasting energy of the UE (the UE receives no paging message for most of the time). Although less power of the UE is consumed when using a wake-up signal, there has been absent so far a solution to coordinating the wake-up signal with the paging message. The document "<NPL>", discusses the benefit and the design of a wake-up signal/channel for idle mode paging and connected mode DRX. The document "<NPL>", discusses the power consumption reduction for paging and connected-mode DRX. The document "<NPL>", discusses the efficient monitoring of DL control channels. The patent application <CIT> discloses a method and apparatus for monitoring a paging in a wireless communication system is provided. A user equipment (UE) monitors multiple paging instances at one paging occasion. Specifically, the UE monitors a first paging instance with a first repetition level in a paging occasion, and monitors a second paging instance with a second repetition level, which is higher than the first repetition level, in the paging occasion.

Embodiments of the disclosure provide a method and apparatus for transmitting information and a method and apparatus for monitoring a channel, so as to address the problem of how to coordinate the wake-up signal with the paging message while saving power of UE.

Advantageous effects of the disclosure are as follows.

In the technical solutions according to the embodiments of the disclosure, UE monitors a paging channel and/or a control channel by using a DRX or eDRX scheme in a time window after being woken up upon reception of a wake-up signal. If the UE receives a paging message and/or control channel scheduling information in the time window, it processes the paging message and/or the control channel scheduling information. If the UE does not receive the paging message and/or the control channel scheduling information in the time window, it stops monitoring the paging channel and/or the control channel, and continues to monitor the wake-up signal.

In the existing technology, the UE monitors a paging message constantly, and when there is no paging message of the UE, the UE still consumes much power because of the monitoring. Whereas in the technical solutions according to the embodiments of the disclosure, the wake-up signal is introduced and is used together with the paging message so that the UE only monitors the wake-up signal, and is woken up only when necessary to monitor the paging message. Since monitoring the wake-up signal consumes much less power than monitoring the paging message, and for example, the wake-up signal can be monitored passively in a similar way to electronic toll collection (hereinafter "ETC") or radio frequency identification (hereinafter "RFID") which saves power comparing with active monitoring, power of the UE can be saved. Moreover, since the UE can still receive the paging message according to the embodiments of the disclosure, accessibility of services to the UE is also guaranteed.

The drawings described below are intended to help understanding of the disclosure, and constitute a part of the disclosure. The embodiments of the disclosure and the description thereof are intended to explain the disclosure instead of to limiting the disclosure unduly.

With the development of wireless communication systems, types of UE and types of services have been diversified, and demands for saving power of the UE and saving network resources and demands for meeting requirements of various services exist concurrently. In order to save power of the UE but also provide accessibility of the service, a wake-up signal is introduced, and when UE monitors the wake-up signal, the UE consumes low power; and the UE starts a communication module (which consumes more power) upon reception of the wake-up signal thereof to receive a paging message. However, there has been absent so far a specific solution to coordinating the use of the wake-up signal with reception of the paging message.

In view of this, the embodiments of the disclosure provide a solution to monitoring a channel so as to address the problem above. Particular embodiments of the disclosure will be described below with reference to the drawings.

In the following description, embodiments at the UE's side and at the base station's side will be described respectively, and embodiments where the UE and the base station cooperate with each other will be described for better understanding of the solution provided the embodiments of the disclosure. Such a description shall not suggest that the UE and the base station must cooperate with each other or must work separately. In fact, problems at the UE's side and at the base station's side can be addressed, respectively, when the UE and the base station operate separately in the respective embodiments, and a better technical effect can be achieved when both of them cooperate with each other.

<FIG> is a schematic flow chart of a method for monitoring a channel at the UE's side according to an embodiment of the disclosure, and as illustrated in <FIG>, the method can include the following operations <NUM>-<NUM>.

In the operation <NUM>, UE monitors a paging channel and/or a control channel by using a DRX or eDRX scheme in a time window after being woken up upon reception of a wake-up signal.

In the operation <NUM>, the UE determines whether a message is received in the time window, and if so, then the UE proceeds to the operation <NUM>; otherwise, the UE proceeds to the operation <NUM>.

In the operation <NUM>, if the UE receives a paging message and/or control channel scheduling information in the time window, then the UE processes the paging message and/or the control channel scheduling information.

In the operation <NUM>, if the UE does not receive any paging message and/or control channel scheduling information in the time window, then the UE stops monitoring the paging channel and/or the control channel, and continues to monitor the wake-up signal.

According to the embodiment of the disclosure, the UE monitors a paging channel by using the DRX or eDRX scheme, and/or monitors a control channel by using the DRX or eDRX scheme, in a time window after being woken up upon reception of a wake-up signal. If the UE receives a paging message in the time window, it processes the paging message; and/or, if the UE receives control channel scheduling information in the time window, it processes the control channel scheduling information. If the UE does not receive any paging message and/or control channel scheduling information, then it stops monitoring the paging channel and/or the control channel, and continues to monitor the wake-up signal.

The paging channel according to this embodiment is a downlink transmission channel for transmitting data related to a paging process.

The wake-up signal may be a wake-up signal transmitted by a network side apparatus.

According to an implementation mode of the embodiment of the disclosure, the UE in an idle or inactive or connected mode enters a sleep mode, and receives the wake-up signal from the network side apparatus.

The UE may enter the sleep mode upon determining according to system information or a broadcast that the network side apparatus supports transmission of the wake-up signal, or may enter the sleep mode according to a network configuration.

According to an implementation mode of the embodiment of the disclosure, the network side apparatus announces whether it supports transmission of the wake-up signal according to system information or a broadcast, and only if this attribute is supported by the network side apparatus, then the UE may enter the sleep mode. According to another implementation mode of the embodiment of the disclosure, whether the UE enters the sleep mode can be configured by the network side apparatus.

According to an implementation mode of the embodiment of the disclosure, the UE monitors the paging channel and/or the control channel by using the DRX or eDRX scheme in the time window after being woken up upon reception of the wake-up signal as follows: after being woken up upon reception of the wake-up signal, the UE entering the sleep mode from the idle or inactive state enters the idle or inactive state, starts the time window, and monitors the paging channel by using the DRX or eDRX scheme in the time window, where the length of the time window is prescribed by a protocol, configured by the network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling.

According to an implementation mode of the embodiment of the disclosure, upon reception of the wake-up signal transmitted by the network side apparatus, the UE entering the sleep mode from the idle or inactive state enters the idle or inactive state, starts a time window, and monitors a paging message by using the DRX or eDRX scheme, where the length of the time window is prescribed by the protocol, configured by the network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling.

The time window is implemented by using a timer, or is a period of time for receiving N paging messages, where N is an integer equal to or more than <NUM>.

According to an implementation mode of the embodiment of the disclosure, the time window can implemented by using a timer, or can be a period of time for receiving N paging messages, where N is an integer equal to or more than <NUM>. The time window can be prescribed by the protocol, configured by the network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling.

That the UE continues to monitor the wake-up signal may happen after the UE enters the sleep mode.

According to an implementation mode of the embodiment of the disclosure, if the UE receives the paging message in the time window, it processes the paging message and then transmits and receives data; and if the UE does not receive any paging message in the time window, it stops monitoring the paging message, enters the sleep mode, and then continues to monitor the wake-up signal.

According to an implementation mode of the embodiment of the disclosure, after being woken up upon reception of the wake-up signal, the UE entering the sleep mode from the connected state re-enters the connected state, starts a time window, and monitors the control channel by using the DRX or eDRX scheme in the time window, where the length of the time window is configured by the network side apparatus via dedicated signaling.

The time window is implemented by using a timer.

According to an implementation mode of the embodiment of the disclosure, upon reception of the wake-up signal transmitted by the network side apparatus, the UE entering the sleep mode from the connected state re-enters the connected state, starts a time window, and monitors a downlink control channel by using the DRX or eDRX scheme in the time window, where the length of the time window is configured by the network side apparatus via dedicated signaling. The time window is implemented by using a timer.

When the UE in the sleep mode has uplink data to transmit, the method may further include waking up the UE and transmitting the uplink data.

According to an implementation mode of the embodiment of the disclosure, if the UE in the sleep mode has uplink data to transmit, then the UE wakes itself up, and transmits the uplink data.

The method further includes that the UE in the sleep mode reads system information and enters the sleep mode, after being woken up by a wake-up signal transmitted by the network side apparatus when the system information is updated. Or the UE reads system information after being woken, which is not part of the present invention.

According to an implementation mode of the embodiment of the disclosure, after the UE is woken up, the UE reads the system information again to ensure that the current system information is up-to-date. Or when the UE is in the sleep mode, if system information is updated, then the network side apparatus transmits a wake-up signal to wake up the UE to read the latest system information, and the UE returns to the sleep mode after reading the system information.

An embodiment at the base station's side will be described below. Since the embodiment at the base station's side corresponds to the embodiment at the UE's side to an extent, reference can be made to the embodiment above at the UE's side for details of the embodiment at the base station's side.

<FIG> is a schematic flow chart of a method for transmitting information at the base station's side according to an embodiment of the disclosure. As illustrated in <FIG>, the method can include the following operations <NUM> and <NUM>.

Operation <NUM>: transmitting a wake-up signal to UE.

Operation <NUM>: transmitting a paging message and/or control channel scheduling information over a paging channel and/or a control channel in a time window by using a DRX or eDRX scheme if the paging message and/or control channel scheduling information is needed to be transmitted in the time window; otherwise, not transmitting the paging message and/or control channel scheduling information over the paging channel and/or the control channel in the time window by using the DRX or eDRX scheme.

According to an implementation mode of the embodiment of the disclosure, the UE is such a UE that if the UE does not receive any paging message and/or control channel scheduling information in the time window, then the UE stops monitoring the paging channel and/or the control channel and continues to monitor the wake-up signal after entering a sleep mode.

According to an implementation mode of the embodiment of the disclosure, the UE enters the sleep mode upon determining according to system information or a broadcast that the network side apparatus supports transmission of the wake-up signal, or enters the sleep mode according to a network configuration.

According to an implementation mode of the embodiment of the disclosure, when the UE entering the sleep mode from an idle or inactive state enters the idle or inactive state after being woken up by the wake-up signal, the length of the time window is prescribed by a protocol, configured by the network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling.

The time window is implemented by using a timer, or the time window is a period of time for receiving N paging messages, where N is an integer equal to or more than <NUM>.

According to an implementation mode of the embodiment of the disclosure, when the UE entering the sleep mode from a connected state enters the connected state after being woken up upon reception of the wake-up signal, the length of the time window is configured by the network side apparatus via dedicated signaling.

Or the time window is implemented by using a timer.

The method for transmitting information further includes: when system information is updated, the wake-up signal is transmitted to the UE so that the UE in the sleep mode reads the system information.

Several examples are illustrated below. In these examples, the DRX scheme is used. As can be apparent to those skilled in the art, the difference between the DRX and eDRX schemes lies in their different paging cycles. When the UE uses the DRX paging scheme, the paging cycle of the UE is the shorter one of the UE-specific paging cycle of the core network and the default paging cycle broadcasted by the base station, whereas the paging cycle of the UE using the eDRX scheme involves an eDRX paging cycle of the core network and the PTW, in which the UE monitors a paging message according to the default paging cycle broadcasted by the base station. As such, those skilled in the art can adapt the methods according to the examples below to the eDRX scheme by modifying the paging cycle of the DRX scheme accordingly.

The first example illustrates an implementation mode of waking up the UE to receive a paging message.

When the UE is configured by the network side apparatus to enter the idle or inactive state, the UE may enter the sleep mode. After the UE in the idle or inactive state camps on in a cell supporting transmitting of the wake-up signal, the UE enters the sleep mode, and only receives the wake-up signal from the network side apparatus.

<FIG> is a schematic diagram of a time window according to the first example. As illustrated by <FIG>, upon reception of the wake-up signal transmitted by the network side apparatus, the UE enters the idle or inactive state, starts a time window, and monitors a paging message by using the DRX scheme in the time window. Moreover, after the UE is woken up, the UE reads system information again so that the current system information is up-to-date. The length of the time window is configured by the network side apparatus via a broadcast or dedicated signaling. The time window is implemented by using a timer, or is a period of time for receiving N (N=<NUM>) paging messages, as illustrated by <FIG>.

If the UE receives the paging message in the time window, then it processes the paging message and subsequently transmits and receives data. If the UE does not receive any paging message in the time window, then it stops monitoring the paging message, enters the sleep mode, and continues to monitor the wake-up signal.

If the UE in the sleep mode has uplink data to transmit, then it is woken up directly to transmit the uplink data.

This example illustrates an implementation mode of waking up the UE to transmit and receive data.

The UE in the connected state is configured by the network side apparatus to enter the sleep mode via dedicated signaling. The UE in the sleep mode only receives the wake-up signal from the network side apparatus.

<FIG> is a schematic diagram of a time window according to the second example. As illustrated by <FIG>, upon reception of the wake-up signal transmitted from the network side apparatus, the UE enters the connected state, starts a time window, and monitors a downlink control channel in the time window constantly by using the DRX scheme if the DRX mode is configured by the network side apparatus. If the DRX mode is not configured by the network side apparatus, then the UE monitors the downlink control channel constantly. In the time window. The length of the time window is configured by the network side apparatus via dedicated signaling, and is implemented by using a timer.

If the UE receives scheduling information over a downlink control channel in the time window, then it transmits and receives data. If the UE does not receive any scheduling information over the downlink control channel in the time window, then it stops monitoring the downlink control channel, enters the sleep mode, and continues to monitor the wake-up signal.

This example illustrates an implementation mode of waking up the UE to update system information.

When the UE is configured by the network side apparatus to enter the idle or inactive state, the UE may enter the sleep mode. After the UE in the idle or inactive state camps on in a cell supporting transmission of the wake-up signal, the UE enters the sleep mode, and only receives the wake-up signal from the network side apparatus.

The UE in the connected state is configured by the network side apparatus via dedicated signaling to enter the sleep mode. Upon reception of the wake-up signal transmitted by the network side apparatus, the UE in the sleep mode enters the idle or inactive or connected state, starts a time window, and monitors a paging message or a control channel in the time window by using the DRX scheme. The length of the time window is configured by the network side apparatus via a broadcast or dedicated signaling. The time window is implemented by using a timer.

When system information of the network side apparatus is updated, every UE in the sleep mode in the cell are woken up by the network side. After the UE is woken up, the UE receives in the time window a paging message indicating that the system information is updated. Then the UE receives the system information, and returns to the sleep mode upon reception of the system information.

Based upon the same inventive conception, embodiments of the disclosure further provide an apparatus for monitoring a channel and an apparatus for transmitting information. Since these apparatuses address the problem under a similar principle to the method for monitoring a channel and the method for transmitting information, reference can be made to the embodiments above of the methods for details of the embodiments of these apparatuses, and a repeated description thereof is omitted herein.

<FIG> is a schematic structural diagram of an apparatus for monitoring a channel at the UE's side according to an embodiment of the disclosure. As illustrated by <FIG>, the apparatus includes a monitoring module <NUM> and a processing module <NUM>.

The monitoring module <NUM> is configured to monitor a paging channel and/or a control channel by using a DRX or eDRX scheme in a time window after UE is woken up upon reception of a wake-up signal.

The processing module <NUM> is configured to: process a paging message and/or control channel scheduling information if the UE receives the paging message and/or the control channel scheduling information in the time window; and stop monitoring the paging channel and/or the control channel and continue to monitor the wake-up signal if the UE does not receive the paging message and/or the control channel scheduling information in the time window.

When the processing module is configured to continue to monitor the wake-up signal, the processing module is further configured to continue to monitor the wake-up signal after entering a sleep mode.

According to an implementation mode of the embodiment of the disclosure, when the monitoring module is configured to receive the wake-up signal, the monitoring module is further configured to receive the wake-up signal transmitted by a network side apparatus.

According to an implementation mode of the embodiment of the disclosure, the UE is such UE that enters a sleep mode upon determining according to system information or a broadcast that the network side apparatus supports transmission of the wake-up signal, or is such UE that enters the sleep mode according to a network configuration.

According to an implementation mode of the embodiment of the disclosure, when the monitoring module is configured to monitor the paging channel and/or the control channel by using the DRX or eDRX scheme in the time window after the UE is woken up upon reception of the wake-up signal, the monitoring module is further configured to: enter an idle or inactive state, start a time window, and monitor a paging channel by using the DRX or eDRX scheme in the time window, after the UE entering a sleep mode from the idle or inactive state is woken up upon reception of the wake-up signal, where a length of the time window is prescribed by a protocol, configured by the network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling.

According to an implementation mode of the embodiment of the disclosure, the monitoring module is further configured to enter a connected state, start a time window, and monitor a control channel by using the DRX or eDRX scheme in the time window, after the UE entering a sleep mode from the connected state is woken up upon reception of the wake-up signal, where a length of the time window is configured by the network side apparatus via dedicated signaling.

Or, the time window is implemented by using a timer.

According to an implementation mode of the embodiment of the disclosure, the apparatus further includes an uplink data transmitting module. The uplink data transmitting module is configured to wake up the UE and transmit uplink data when the UE in a sleep mode needs to transmit the uplink data.

The apparatus further includes an updating module. The updating module is configured to: read the system information and enter a sleep mode after the UE in the sleep mode is woken up by the wake-up signal transmitted by the network side apparatus when the system information is updated, to read the system information, and to enter the sleep mode. Or the apparatus reads system information after being woken, which is not part of the present invention.

<FIG> is a schematic structural diagram of an apparatus for transmitting information at the base station's side. As illustrated by <FIG>, the apparatus includes a wake-up signal transmitting module <NUM> and an information transmitting module <NUM>.

The wake-up signal transmitting module <NUM> is configured to transmit a wake-up signal to UE.

The information transmitting module <NUM> is configured to: transmit a paging message and/or control channel scheduling information over a paging channel and/or a control channel in a time window by using a DRX or eDRX scheme, if the paging message and/or the control channel scheduling information is configured to be transmitted in the time window; and not transmit the paging message and/or the control channel scheduling information over the paging channel and/or the control channel in the time window if the paging message and/or the control channel scheduling information is configured not to be transmitted in the time window.

According to an implementation mode of the embodiment of the disclosure, the UE is such UE that stops monitoring the paging channel and/or the control channel and continues to monitor the wake-up signal after entering a sleep mode if the UE does not receive the paging message and/or the control channel scheduling information in the time window.

According to an implementation mode of the embodiment of the disclosure, when the UE entering a sleep mode from an idle or inactive state enters the idle or inactive state after being woken up by the wake-up signal, a length of the time window is prescribed by a protocol, configured by a network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling.

According to an implementation mode of the embodiment of the disclosure, when the UE entering a sleep mode from a connected state enters the connected state after being woken up upon reception of the wake-up signal, a length of the time window is configured by a network side apparatus via dedicated signaling.

The wake-up signal transmitting module is further configured to transmit the wake-up signal to the UE so that the UE in a sleep mode reads system information when the system information is updated.

Each part of the apparatuses above has been described in the form of modules or units according to their functionalities. Of course, the functionalities of the respective modules or units can also be performed by one or more pieces of software or hardware.

The technical solutions according to the embodiments of the disclosure can be implemented as follows.

<FIG> is a schematic structural diagram of UE according to an embodiment of the disclosure. As illustrated by <FIG>, the UE includes a memory <NUM> and a processor <NUM>.

The memory <NUM> is configured to store program instructions.

The processor <NUM> is configured to read and execute the program instructions stored in the memory <NUM> to perform the following operations: monitoring a paging channel and/or a control channel by using a DRX or eDRX scheme in a time window after the UE is woken up upon reception of a wake-up signal; processing a paging message and/or control channel scheduling information if the UE receives the paging message and/or the control channel scheduling information in the time window; and stopping monitoring the paging channel and/or the control channel and continue to monitor the wake-up signal if the UE does not receive the paging message and/or the control channel scheduling information in the time window.

According to an implementation mode of the embodiment of the disclosure, processing the paging message and/or the control channel scheduling information if the UE receives the paging message and/or the control channel scheduling information in the time window, includes: processing the paging message if the UE receives the paging message in the time window; and/or, processing control channel scheduling information if the UE receives the control channel scheduling information in the time window.

According to an implementation mode of the embodiment of the disclosure, continuing to monitor the wake-up signal includes: continuing to monitor the wake-up signal after entering a sleep mode.

According to an implementation mode of the embodiment of the disclosure, the wake-up signal is transmitted by a network side apparatus.

According to an implementation mode of the embodiment of the disclosure, the UE enters a sleep mode upon determining according to system information or a broadcast that a network side apparatus supports transmission of the wake-up signal, or enters the sleep mode according to a network configuration.

According to an implementation mode of the embodiment of the disclosure, monitoring the paging channel and/or the control channel by using the DRX or eDRX scheme in the time window after the UE is woken up upon reception of the wake-up signal includes: entering an idle or inactive state, starting a time window, and monitoring the paging channel by using the DRX or eDRX scheme in the time window, after the UE entering a sleep mode from the idle or inactive state is woken up upon reception of the wake-up signal, where a length of the time window is prescribed by a protocol, configured by a network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling.

According to an implementation mode of the embodiment of the disclosure, monitoring the paging channel and/or the control channel by using the DRX or eDRX scheme in the time window after the UE is woken up upon reception of the wake-up signal includes: entering a connected state, starting a time window, and monitoring the control channel by using the DRX or eDRX scheme in the time window, after the UE entering a sleep mode from the connected state is woken up upon reception of the wake-up signal, wherein a length of the time window is configured by a network side apparatus via dedicated signaling.

According to an implementation mode of the embodiment of the disclosure, when the UE in a sleep mode has uplink data to transmit, the processor is further configured to read and execute the program instructions stored in the memory to perform the following operations: waking up the UE, and transmitting the uplink data.

The processor is further configured to read and execute the program instructions stored in the memory to perform the following operations: reading the system information, and entering a sleep mode, after the UE in the sleep mode is woken up by the wake-up signal transmitted by the network side apparatus when the system information is updated. Or the processor is configured to read system information after being woken, which is not part of the present invention.

In <FIG>, the bus architecture can include any number of interconnecting buses and bridges to link together various circuits including one or more processors represented by the processor <NUM> and one or more memories represented by the memory <NUM>. The bus architecture can further link together various other circuits such as a peripheral device, a manostat and a power management circuit, all of which are well known in the art, so a further description thereof is omitted herein. The bus interface serves as an interface. The transceiver <NUM> can be a number of elements, i.e., it includes a transmitter and a receiver, providing units for communication with various other devices over a transmission medium. For different user equipment, the user interface <NUM> can also be an interface via which devices are connected internally and externally as needed, and the connected devices include but are not limited to a keypad, a monitor, a speaker, a microphone, a joystick, etc..

The processor <NUM> is responsible for managing the bus architecture and performing normal processing, and the memory <NUM> can store data for use by the processor <NUM> when performing the operations.

<FIG> is a schematic structural diagram of a base station according to an embodiment of the disclosure. As illustrated by <FIG>, the base station includes a memory <NUM> and a processor <NUM>.

The processor <NUM> is configured to read the program instructions stored in the memory <NUM> to perform the following operations: transmitting a wake-up signal to UE; transmitting a paging message and/or control channel scheduling information over a paging channel and/or a control channel in a time window by using a DRX or eDRX scheme when the paging message and/or the control channel scheduling information is configured to be transmitted in the time window; and not transmitting the paging message and/or the control channel scheduling information over the paging channel and/or the control channel by using the DRX or eDRX scheme in the time window when the paging message and/or the control channel scheduling information is configured not to be transmitted in the time window.

According to an implementation mode of the embodiment of the disclosure, the UE is such UE that enters a sleep mode upon determining according to system information or a broadcast that a network side apparatus supports transmission of the wake-up signal, or is such UE that enters the sleep mode according to a network configuration.

According to an implementation mode of the embodiment of the disclosure, when the UE entering the sleep mode from an idle or inactive state enters the idle or inactive state after being woken up by the wake-up signal, a length of the time window is prescribed by a protocol, configured by the network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling.

The time window is implemented by using a timer, or is a period of time for receiving N paging messages. N is an integer equal to or more than <NUM>.

The processor is further configured to read the program instructions stored in the memory to perform the following operation: transmitting the wake-up signal to the UE so that the UE in the sleep mode reads system information when the system information is updated.

In <FIG>, the bus architecture can include any number of interconnecting buses and bridges to link together various circuits including one or more processors represented by the processor <NUM> and one or more memories represented by the memory <NUM>. The bus architecture can further link together various other circuits such as a peripheral device, a manostat, and a power management circuit, all of which are well known in the art, so a further description thereof is omitted herein. The bus interface <NUM> serves as an interface. The transceiver <NUM> can be a number of elements, i.e., it includes a transmitter and a receiver, providing units for communication with various other devices over a transmission medium. The processor <NUM> is responsible for managing the bus architecture and performing normal processing, and the memory <NUM> can store data for use by the processor <NUM> when performing the operations.

The apparatus for monitoring a channel according to any one of the implementation modes of the embodiment above of the disclosure can be any kind of terminals, for example.

The terminals can also be referred to as UE, a mobile station (hereinafter "MS"), a mobile terminal, a mobile telephone, and etc. The terminal can communicate with one or more core networks over a radio access network (hereinafter "RAN"). For example, the terminal can be a mobile phone (or referred to as a cell phone), a computer having a mobile character, and etc. The terminal can also be a portable, pocket, handheld, built-in-computer, or on-vehicle mobile device.

The apparatus for transmitting information according to any one of the implementation modes of the embodiment above of the disclosure can be any kind of network device, for example.

The network device can be a base station (e.g., an access point), which refers to such a device in an access network that communicates with a radio terminal over one or more sectors via a radio interface. The base station can be configured to convert a received air frame into an internet protocol (hereinafter "IP") packet, and a received IP packet into an air frame, and can operate as a router between the radio terminal and the remaining components of the access network. The remaining components of the access network can include an IP network. The base station can further coordinate attribute management of the air interface. For example, the base station can be a base transceiver station (hereinafter "BTS") in a global system for mobile communications (hereinafter "GSM") or code division multiple access (hereinafter "CDMA") system, or can be a base station (Node B) in a wideband code division multiple access (hereinafter "WCDMA") system, or can be an evolved Node B (hereinafter "eNB" or "e-Node B") in an LTE system, or a gNB in a <NUM> system, although the embodiment of the disclosure is not limited thereto.

An embodiment of the disclosure provides a computer storage medium configured to store computer executable instructions for any one of the apparatuses according to the embodiments above of the disclosure, where the computer executable instructions include program configured to perform any one of the methods according to the embodiments above of the disclosure.

The computer storage medium can be any available medium or data storage device accessible to computers. It includes but is not limited to a magnetic medium such as a floppy disk, a hard disk, a magnetic tape, or a magneto-optical disk (hereinafter "MO") disk, an optical medium such as a compact disk (hereinafter "CD"), a digital versatile disk (hereinafter "DVD"), a Blu-ray disk (hereinafter "BD"), or a holographic versatile disk (hereinafter "HVD"), or a semiconductor medium such as a read-only memory (hereinafter "ROM"), an electrically erasable programmable read-only memory (hereinafter "EPROM"), an electrically erasable programmable read-only memory (hereinafter "EEPROM"), a nonvolatile memory (e.g., a NAND flash), or a solid-state drive (hereinafter "SSD").

In summary, in the technical solutions according to the embodiments of the disclosure, UE monitors a paging channel and/or a control channel by using the DRX or eDRX scheme in a time window after being woken up upon reception of a wake-up signal. If the UE receives a paging message or control channel scheduling information in the time window, it processes the paging message and/or the control channel scheduling information. If the UE does not receive the paging message or control channel scheduling information in the time window, then it stops monitoring the paging channel or the control channel, and continues to monitor the wake-up signal.

The solutions according to the embodiments of the disclosure can save power of the UE, and also make services accessible to the UE.

Those skilled in the art shall appreciate that the embodiments of the disclosure can be embodied as a method, a system or a computer program product. Therefore the disclosure can be embodied in the form of an all-hardware embodiment, an all-software embodiment or an embodiment of software and hardware in combination. Furthermore the disclosure can be embodied in the form of a computer program product embodied in one or more computer useable storage mediums (including but not limited to a disk memory, a CD-ROM, an optical memory, etc.) in which computer useable program codes are contained.

The disclosure has been described in a flow chart and/or a block diagram of the method, the device (system) and the computer program product according to the embodiments of the disclosure. It shall be appreciated that respective flows and/or blocks in the flow chart and/or the block diagram and combinations of the flows and/or the blocks in the flow chart and/or the block diagram can be embodied in computer program instructions. These computer program instructions can be loaded onto a general-purpose computer, a specific-purpose computer, an embedded processor or a processor of another programmable data processing device to produce a machine so that the instructions executed on the computer or the processor of the other programmable data processing device create means for performing the functions specified in the flow(s) of the flow chart and/or the block(s) of the block diagram.

These computer program instructions can also be stored into a computer readable memory capable of directing the computer or the other programmable data processing device to operate in a specific manner so that the instructions stored in the computer readable memory create an article of manufacture including instruction means which perform the functions specified in the flow(s) of the flow chart and/or the block(s) of the block diagram.

These computer program instructions can also be loaded onto the computer or the other programmable data processing device so that a series of operational operations are performed on the computer or the other programmable data processing device to create a computer implemented process so that the instructions executed on the computer or the other programmable device provide operations for performing the functions specified in the flow(s) of the flow chart and/or the block(s) of the block diagram.

Claim 1:
A method for monitoring a channel, applied to a user equipment, UE, the method comprises:
monitoring (<NUM>) a channel by using a discontinuous reception, DRX, or extended DRX, eDRX, scheme in a time window after being woken up from a sleep mode according to a network configuration upon reception of a wake-up signal;
processing (<NUM>) information when the UE receives the information in the time window; and
stopping (<NUM>) monitoring the channel, and continuing to monitor the wake-up signal when the UE does not receive the information in the time window;
wherein the channel comprises a paging channel, and the information comprises a paging message; or, the channel comprises a control channel, and the information comprises control channel scheduling information;
wherein monitoring (<NUM>), by the UE, the channel by using the DRX or eDRX scheme in the time window after being woken up upon reception of the wake-up signal comprises:
entering an idle or inactive state, starting the time window, and monitoring the paging channel by using the DRX or eDRX scheme in the time window, after the UE entering a sleep mode from the idle or inactive state is woken up upon reception of the wake-up signal, wherein a length of the time window is prescribed by a protocol, configured by a network side apparatus via a broadcast, or configured by the network side apparatus via dedicated signaling;
wherein the time window is implemented by using a timer, or the time window is a period of time for receiving N paging messages, wherein N is an integer larger than <NUM>;
wherein the method further comprises:
reading system information, and entering a sleep mode, after the UE in the sleep mode is woken up by the wake-up signal transmitted by the network side apparatus when the system information is updated.