CN108781430A - A kind of paging method and relevant device based on unlicensed spectrum - Google Patents

A kind of paging method and relevant device based on unlicensed spectrum Download PDF

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Publication number
CN108781430A
CN108781430A CN201680083762.XA CN201680083762A CN108781430A CN 108781430 A CN108781430 A CN 108781430A CN 201680083762 A CN201680083762 A CN 201680083762A CN 108781430 A CN108781430 A CN 108781430A
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duration
terminal device
synchronization
time
frame information
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CN108781430B (en
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于峰
温容慧
于光炜
张武荣
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

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

Abstract

The embodiment of the present invention discloses a kind of paging method and relevant device based on unlicensed spectrum, and wherein method includes：Terminal device calculates paging frame PF and paging occasion PO, and calculates the first duration at the time of PO enters sleep state apart from terminal device according to PF and PO, and starts timing when entering sleep state；When the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, the second duration of current time distance PO is calculated；A length of first duration and the preset difference for waking up duration in advance when target；When the second duration be more than preset duration threshold value when, using the second duration in advance wake up duration difference as new target duration, and go successively to sleep state and start timing；Alternatively, when the second duration is less than duration threshold value, it is lasting to keep intercepting state, until listening to paging message.Using the present invention, it can ensure that terminal device can listen to paging message in an unlicensed spectrum.

Description

A kind of paging method and relevant device based on unlicensed spectrum Technical field
The present invention relates to field of communication technology more particularly to a kind of paging methods and relevant device based on unlicensed spectrum.
Background technique
Paging way between current base station and terminal device is usual are as follows: base station and terminal device are respectively according to Terminal Equipment Identifier and DRX (discontinuous reception, discontinuous reception) etc. information calculate PF (paging frame, paging frame) and PO (paging occasion, paging occasion), base station sends paging message in PO, and terminal device is in PO listening paging message.
In authorization frequency spectrum, frame number or subframe numbers with the variation of time be it is continuous because base station or terminal device, always in busy channel, terminal device can judge the frame number and subframe numbers of current system even if idle state according to timer information.But, in an unlicensed spectrum, node (base station or terminal) in network can not continuous busy channel always due to the limitation of regulation, base station may need to seize channel in a manner of competition, i.e. base station will appear LBT and (listen to before dialogue, Listen Before Talk) duration, the LBT duration here refer specifically to base station or terminal device in unlicensed spectrum do every time talk with before time of channel is seized when listening to.When base station does not have busy channel (i.e. base station was in the LBT duration), base station will not send system-frame, base station only rob again account for channel after just will continue to send system-frame.Therefore, in an unlicensed spectrum, System Frame Number is as the variation of time may be discontinuous.
Such as, when for system deployment when in unlicensed spectrum, terminal device still uses DRX mechanism due to the demand of low-power consumption to M2M (Machine To Machine, machine to machine), enter sleep in idle state to reach power saving purpose, wakes up listening paging message at the PO moment.But, when there is the LBT duration, since terminal device is in sleep state identification less than the LBT duration, the frame number and subframe numbers of maintaining terminal equipment successively decrease still according to the continuous time to be calculated, and base station can know the presence of LBT duration by Channel Detection, base station will not send frame in the LBT duration, therefore, relative to the frame number and subframe numbers of maintaining terminal equipment, the frame number and subframe numbers of base station maintenance can be due to the LBT duration Presence and lag.Terminal device is waken up according to the time of self maintained at the PO moment, terminal device will not go specially judge whether currently transmitted frame information is consistent with the system frame information of self maintained after waking up, terminal device is thought to be consistent, and actually due to the presence of LBT duration, the PO moment that base station is safeguarded does not arrive also, therefore base station will not send out paging message at this moment, terminal device listens to a period of time after waking up, think not itself paging message, if listening to less than paging message so as to cause this paging is missed.
Summary of the invention
The embodiment of the present invention provides a kind of paging method and relevant device based on unlicensed spectrum, and can guarantee terminal device in an unlicensed spectrum every time can listen to the paging message of base station transmission.
First aspect present invention provides a kind of paging method based on unlicensed spectrum, comprising:
Terminal device calculates paging frame PF and paging occasion PO, and calculates the first duration at the time of PO enters sleep state apart from terminal device according to PF and PO, and start timing when entering sleep state；
When the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, the second duration of current time distance PO is calculated；A length of first duration and the preset difference for waking up duration in advance when target；
When the second duration is greater than preset duration threshold value, using the second duration and the preset difference for waking up duration in advance as new target duration, and goes successively to sleep state and start timing；Alternatively,
It is lasting to keep listening to state when the second duration is less than preset duration threshold value, until listening to the paging message sent by base station in PO.
Such as, when there is the LBT duration during sleep state in terminal device, the PO that the wake-up moment distance of terminal device precalculates may be distant, in order to avoid terminal device can not listen to paging message, terminal device can be by obtaining current frame information to calculate the duration of distance PO, and determine that going successively to sleep state still persistently keeps listening to state, thereby may be ensured that terminal device can listen to the paging message of base station transmission according to calculated duration.
In the first possible embodiment, terminal device calculates paging frame PF and paging occasion PO, and calculates the first duration at the time of PO enters sleep state apart from terminal device according to PF and PO, and Start timing when entering sleep state, comprising:
Terminal device calculates PF and PO, and obtains corresponding frame information in the first Channel holding time where at the time of terminal device enters sleep state；
According to corresponding frame information in PF, PO and the first Channel holding time, it determines corresponding frame information in the second channel holding time where PO, and calculates first duration of the corresponding frame information between corresponding frame information in second channel holding time in the first Channel holding time；
According to corresponding frame information in the second channel holding time where PO, the third duration between leader sequence preamble of the PO apart from second channel holding time is calculated, and starts timing when entering sleep state.
Such as, assuming that there is 3 frames in a Channel holding time, each frame has 8 subframes, the PF calculated is 34, PO is 3, if being the 0 work song frame (i.e. corresponding frame information in the first Channel holding time) of No. 0 frame of No. 0 Channel holding time at the time of into sleep state, then PF is second frame (assuming that frame number and subframe numbers are all since 0) in the 12nd Channel holding time, then PO is the 4th subframe (i.e. corresponding frame information in second channel holding time) of second frame in the 12nd Channel holding time, therefore, first duration T=11* (3*8+1) * t+ (8+3+1) * t of the corresponding frame information between corresponding frame information in second channel holding time in the first Channel holding time can be calculated, t is the duration of a subframe；And third duration T1=(8+3+1) the * t between preamble (the specially initial position of preamble, the length of a preamble are equal to the length of a subframe) of the PO apart from second channel holding time can be calculated.
The possible implementation of with reference to first aspect the first, in the second possible implementation, when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, the second duration of current time distance PO is calculated, comprising:
When the duration of institute's timing reaches target duration, into wake-up states, and detects and preset wake up duration in advance；
When the preset duration of wake-up in advance is at least duration required when terminal device carries out discrete synchronous, required duration determines the method for synchronization of terminal device when carrying out discrete synchronous with terminal device according to third duration；
It is synchronized according to the identified method of synchronization, and after synchronously completing, interception system message, to obtain Take corresponding frame information in the third Channel holding time where current time；
Calculate second duration of the corresponding frame information between corresponding frame information in third Channel holding time in second channel holding time.
The possible implementation of second with reference to first aspect, in the third possible implementation, required duration determines the method for synchronization of terminal device when carrying out discrete synchronous with terminal device according to third duration, comprising:
Judge whether third duration is less than duration required when terminal device carries out discrete synchronous；
If being judged as YES, it is determined that the method for synchronization of terminal device is continuous synchronization mode；
Otherwise, it determines the method for synchronization of terminal device is the discrete method of synchronization.
Terminal device is by judging third duration with discrete synchronous required duration, it can choose out the corresponding method of synchronization, allow the selected method of synchronization out to guarantee that terminal device will not lead to miss PO because of synchronous overlong time, is further ensured that terminal device can accurately listen to the paging message of base station transmission.
The possible implementation of with reference to first aspect the first, in the fourth possible implementation, when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, the second duration of current time distance PO is calculated, comprising:
When the duration of institute's timing reaches target duration, into wake-up states, and detects and preset wake up duration in advance；
When it is preset wake up duration in advance and be at least third duration when, synchronized according to continuous synchronization mode, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time；
Calculate second duration of the corresponding frame information between corresponding frame information in third Channel holding time in second channel holding time.The preset duration that wakes up in advance is while at least third duration, it is also contemplated that the synchronization duration of terminal device and the duration of interception system message.
Terminal device is by determining that the preset duration that wakes up in advance is at least third duration, the method of synchronization can be determined as to continuous synchronization mode always, it is also ensured that terminal device will not lead to miss PO because of synchronous overlong time, it is further ensured that terminal device can accurately listen to the paging message of base station transmission.
Second aspect of the present invention provides a kind of paging method based on unlicensed spectrum, comprising:
Base station calculates paging frame PF and paging occasion PO, and calculates the first duration at the time of PO enters sleep state apart from terminal device according to PF and PO, and start timing when terminal device enters sleep state；
When the duration of institute's timing reaches target duration, and channel success has been seized in base station, synchronization signal is sent, and obtain the method for synchronization of terminal device；A length of first duration and the preset difference for waking up duration in advance when target, and a length of terminal device is in dormant duration when target；
The time window for sending paging message is determined according to the method for synchronization, and sends paging message to terminal device in time window.
It can be seen that, transmission paging message at PO is no longer fixed in base station, but at the time of sending paging message according to the synchronization duration selection of terminal device actual wake-up moment and terminal device, so that it is also ensured that terminal device can listen to the paging message of base station transmission every time.
Wherein, the detailed process that base station obtains the method for synchronization of terminal device can be with are as follows: is judged according to pre-set agreement or rule the preset duration that wakes up in advance, to determine the method for synchronization of terminal device.
Wherein, terminal device can also calculate PF and PO, and the first duration at the time of PO enters sleep state apart from terminal device is calculated according to PF and PO, and start timing when entering sleep state, terminal device is waken up when the duration of institute's timing reaches target duration.
In the first possible implementation, the time window for sending paging message is determined according to the method for synchronization, and sends paging message to terminal device in time window, comprising:
When getting the method for synchronization is continuous synchronization mode, search the leader sequence preamble that terminal device enters first Channel holding time after wake-up states, and time window is arranged after preamble, and send paging message to terminal device in time window；
When getting the method for synchronization is the discrete method of synchronization, according to terminal device carry out it is discrete synchronize that required duration determines terminal device synchronize successfully the moment, and time window is arranged after synchronizing successfully the moment, and send paging message to terminal device in time window.
Third aspect present invention provides a kind of terminal device, which has the function of the method terminal device behavior in practice for realizing above-mentioned first aspect.The function can also execute corresponding software realization by hardware realization by hardware.The hardware or software include one or more corresponding with above-mentioned function Module.
It include processor and receiver in the structure of terminal device in a possible design, the processor is configured to terminal device is supported to execute corresponding function in the method for above-mentioned first aspect.The receiver is configured as supporting the communication between terminal device and base station, receives the paging message that above-mentioned base station is sent at the PO moment.The terminal device can also include memory, and the memory saves the necessary program instruction of terminal device and data for coupling with processor.
Fourth aspect present invention provides a kind of base station, which has the function of the method base station behavior in practice for realizing above-mentioned second aspect.The function can also execute corresponding software realization by hardware realization by hardware.The hardware or software include one or more modules corresponding with above-mentioned function.
It include processor, receiver, transmitter in the structure of base station in a possible design, the processor is configured to base station is supported to execute corresponding function in the method for above-mentioned second aspect.The receiver and the transmitter are used to support the communication between base station and terminal device, for the transmitter for sending synchronization signal and for sending paging message to terminal device in the time window determined, the receiver is used for the method for synchronization of receiving terminal apparatus.The base station can also include memory, and the memory saves the necessary program instruction in base station and data for coupling with processor.
Fifth aspect present invention provides a kind of paging system based on unlicensed spectrum, which includes a kind of terminal device provided by base station and the above-mentioned third aspect；The base station of the system for calculating PF and PO, and according to the position of PF and PO calculating PO, and sends paging message on the position of PO.
Sixth aspect present invention provides another paging system based on unlicensed spectrum, which includes a kind of base station provided by terminal device and above-mentioned fourth aspect；The terminal device of the system, for calculating paging frame PF and paging occasion PO, and the first duration at the time of PO enters sleep state apart from terminal device is calculated according to PF and PO, and start timing when terminal device enters sleep state, and when the duration of institute's timing reaches target duration, into wake-up states, and continue to keep listening to state, until listening to the paging message sent by base station.
Terminal device in the embodiment of the present invention can calculate the first duration at the time of PO enters sleep state apart from terminal device according to PF and PO, and start timing when entering sleep state, and when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, calculate current The second duration of moment distance PO；Wherein, a length of first duration and the preset difference for waking up duration in advance when target；When the second duration be greater than preset duration threshold value when, using the second duration in advance wake up duration difference as new target duration, and go successively to sleep state and start timing；It is lasting to keep listening to state when the second duration is less than duration threshold value, until listening to the paging message sent by base station in PO；It can be seen that, terminal device can be by obtaining current frame information to calculate the duration of distance PO after each wake up, and determine that going successively to sleep state still persistently keeps listening to state, can listen to the paging message of base station transmission so as to guarantee terminal device in an unlicensed spectrum every time according to calculated duration.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, the drawings to be used in the embodiments are briefly described below, apparently, drawings in the following description are only some embodiments of the invention, for those of ordinary skill in the art, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow diagram of paging method based on unlicensed spectrum provided in an embodiment of the present invention；
Fig. 2 is the flow diagram of another paging method based on unlicensed spectrum provided in an embodiment of the present invention；
Fig. 2 a is a kind of paging mechanism schematic diagram of unlicensed spectrum provided in an embodiment of the present invention；
Fig. 3 is the flow diagram of another paging method based on unlicensed spectrum provided in an embodiment of the present invention；
Fig. 4 is the flow diagram of another paging method based on unlicensed spectrum provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of terminal device provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of base station provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of paging system based on unlicensed spectrum provided in an embodiment of the present invention；
Fig. 8 is that the structure of another paging system based on unlicensed spectrum provided in an embodiment of the present invention is shown It is intended to.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, shall fall within the protection scope of the present invention.
The present embodiments relate to terminal device, user can be directed to, the equipment of voice and/or data connectivity is provided, handheld device with wireless connecting function or other processing equipments for being connected to radio modem.Terminal device can be through wireless access network (Radio Access Network, RAN it) is communicated with one or more core net, terminal device can be mobile terminal, such as mobile phone (or be " honeycomb " phone) and the computer with mobile terminal, such as, can be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they exchange language and/or data with wireless access network.Such as, personal communication service (PCS, Personal Communication Service) phone, wireless phone, Session initiation Protocol (SIP) phone, wireless local loop (WLL, Wireless Local Loop) it stands, the equipment such as personal digital assistant (PDA, Personal Digital Assistant).Terminal device is referred to as system, subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), movement station (Mobile Station), mobile station (Mobile), distant station (Remote Station), access point (Access Point), remote terminal (Remote Terminal), access terminal (Access Terminal), user terminal (User Terminal), user agent (User Agent) or user equipment (User Equipment).
It referring to Figure 1, is a kind of flow diagram of paging method based on unlicensed spectrum provided in an embodiment of the present invention, which comprises
S101, terminal device calculates paging frame PF and paging occasion PO, and calculates the first duration at the time of the PO enters sleep state apart from the terminal device according to the PF and the PO, and start timing when entering the sleep state；
Specifically, the process that the terminal device calculates the PF and PO can be with are as follows: the terminal device calculates the PF and the PO according to information such as the mark of the terminal device and DRX, calculates The method of the PF and the PO are the prior art, are not discussed here.While the terminal device calculates the PF and PO, base station can also calculate the PF and PO by identical method, and the base station can find the position of the PO according to the PF and the PO, and send paging message on the position of the PO.
After the terminal device gets the PF and PO, the first duration at the time of the PO enters sleep state apart from the terminal device can be calculated according to the PF and the PO.Such as, assuming that there is 3 frames in a Channel holding time, each frame has 8 subframes, the PF calculated is 34, PO is 3, if being 0 work song frame of No. 0 frame of No. 0 Channel holding time at the time of into sleep state, then PF is second frame (assuming that frame number and subframe numbers are all since 0) in the 12nd Channel holding time, then PO is the 4th subframe (3 work song frames of second frame in the 12nd Channel holding time, that is 3) PO is, the time interval that PO distance enters the sleep moment is the first duration T=11* (3*8+1) * t+ (8+3+1) * t, t is the duration of a subframe.
S102, into wake-up states, and according to the frame information at current time, calculates second duration of the current time apart from the PO when the duration of institute's timing reaches target duration；
Specifically, a length of first duration and the preset difference for waking up duration in advance when the target.When the duration of terminal device institute timing reaches the target duration, the terminal device will be waken up, and it is in wake-up states, if the terminal device after waking up was not in the LBT duration, the terminal device can be synchronized by the corresponding method of synchronization immediately, and after synchronization obtain current time Channel holding time in corresponding frame information, and second duration of the current time apart from the PO is calculated according to the frame information at current time, the method for calculating second duration may refer to above-mentioned S101, be not discussed here.If the terminal device after waking up was in the LBT duration, then the terminal device needs to wait for the end of LBT duration, and the corresponding method of synchronization is begun through when encountering first leader sequence preamble and is synchronized, and corresponding frame information in the Channel holding time at current time is obtained after synchronization, and second duration of the current time apart from the PO is calculated according to the frame information at current time.
S103 using second duration and the preset difference for waking up duration in advance as new target duration, and goes successively to the sleep state and starts timing when second duration is greater than preset duration threshold value；
Specifically, when second duration is greater than preset duration threshold value, using second duration and the preset difference of duration that wakes up in advance as new target duration, and it goes successively to the sleep state and starts timing, circulate operation is executed i.e. between S102 and S103, until second duration is less than the preset duration threshold value.
S104, it is lasting to keep listening to state when second duration is less than the preset duration threshold value, until listening to the paging message sent by base station in the PO；
Specifically, S104 step and S103 step are mutually arranged side by side, i.e., when second duration is less than the preset duration threshold value, no longer execute S103 step, but state is listened into lasting holding by the terminal device, until listening to the paging message sent by base station in the PO.Since the terminal device can calculate the time interval for the PO that current time is safeguarded apart from the base station after being waken up, whether need to listen to the paging message at this time with determination, it can be guaranteed that the paging message is listened in determination to the terminal device again when close to the PO, to guarantee that the terminal device will not miss this paging because listening to less than the paging message.
Terminal device in the embodiment of the present invention can calculate the first duration at the time of PO enters sleep state apart from terminal device according to PF and PO, and start timing when entering the sleep state, and when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, the second duration of current time distance PO is calculated；Wherein, a length of first duration and the preset difference for waking up duration in advance when target；When the second duration be greater than preset duration threshold value when, using the second duration in advance wake up duration difference as new target duration, and go successively to sleep state and start timing；It is lasting to keep listening to state when the second duration is less than duration threshold value, until listening to the paging message sent by base station in PO；It can be seen that, terminal device can be by obtaining current frame information to calculate the duration of distance PO after each wake up, and determine that going successively to sleep state still persistently keeps listening to state, can listen to the paging message of base station transmission so as to guarantee terminal device in an unlicensed spectrum every time according to calculated duration.
Fig. 2 is referred to again, is the flow diagram of another paging method based on unlicensed spectrum provided in an embodiment of the present invention, the method may include:
S201, the terminal device calculate the PF and PO, and obtain corresponding frame information in the first Channel holding time where at the time of the terminal device enters sleep state；
Specifically, the process that the terminal device calculates the PF and PO can be with are as follows: the terminal device calculates the PF and the PO according to information such as the mark of the terminal device and DRX, the method for calculating the PF and PO is the prior art, is not discussed here.While the terminal device calculates the PF and PO, base station can also calculate the PF and PO by identical method, and the base station can find the position of the PO according to the PF and the PO, and send paging message on the position of the PO.
After the terminal device gets the PF and PO, corresponding frame information in the first Channel holding time where at the time of the terminal device enters sleep state can also further be obtained, for example, the available corresponding frame information into first Channel holding time of the terminal device is 3 work song frames of No. 0 frame of No. 2 Channel holding times.
S202, according to corresponding frame information in the PF, the PO and first Channel holding time, it determines corresponding frame information in the second channel holding time where the PO, and calculates first duration of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time；
Specifically, the terminal device is further according to corresponding frame information in the PF, the PO and first Channel holding time, it determines corresponding frame information in the second channel holding time where the PO, and calculates first duration of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time.Such as, assuming that there is 3 frames in a Channel holding time, each frame has 8 subframes, the PF calculated is 34, PO is 3, if being the 0 work song frame (corresponding frame information in i.e. described first Channel holding time) of No. 0 frame of No. 0 Channel holding time at the time of into sleep state, then PF is second frame (assuming that frame number and subframe numbers are all since 0) in the 12nd Channel holding time, then PO is the 4th subframe (corresponding frame information in the i.e. described second channel holding time) in second frame in the 12nd Channel holding time, therefore, first duration T=11* (3*8+1) * t+ (8+3+1) * t of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time can be calculated, t is The duration of one subframe.
S203, corresponding frame information in the second channel holding time where the PO calculate the third duration between leader sequence preamble of the PO apart from the second channel holding time, and into Start timing when entering the sleep state；
Specifically, the terminal device can also be further according to corresponding frame information in the second channel holding time where the PO, the third duration between leader sequence preamble (initial position of the i.e. described second channel holding time) of the PO apart from the second channel holding time is calculated, and starts timing when entering the sleep state.Such as, assuming that there is 3 frames in a Channel holding time, each frame has 8 subframes, the PF calculated is 34, PO is 3, if being the 0 work song frame (corresponding frame information in i.e. described first Channel holding time) of No. 0 frame of No. 0 Channel holding time at the time of into sleep state, then PF is second frame (assuming that frame number and subframe numbers are all since 0) in the 12nd Channel holding time, then PO is the 4th subframe (corresponding frame information in the i.e. described second channel holding time) in second frame in the 12nd Channel holding time, preamble (the specially initial position of preamble of the PO apart from the second channel holding time, the length of one preamble be equal to a subframe length) between third duration T1=( 8+3+1) * t.
S204 into wake-up states, and is detected when the duration of institute's timing reaches target duration and described preset is waken up duration in advance；
Specifically, the terminal device will be waken up when the duration of terminal device institute timing reaches target duration, and wake-up states are in, and detect and described preset wake up duration in advance.Wherein, a length of first duration and the preset difference for waking up duration in advance when the target.
S205, when the preset duration of wake-up in advance is at least duration required when the terminal device carries out discrete synchronous, required duration determines the method for synchronization of the terminal device when carrying out discrete synchronous with the terminal device according to the third duration；
Specifically, when detecting that the preset duration of wake-up in advance is at least duration required when the terminal device carries out discrete synchronous, terminal device duration required when further carrying out discrete synchronous with the terminal device according to the third duration determines the method for synchronization of the terminal device, determines that the detailed process of the method for synchronization can be with are as follows: judge whether the third duration is less than duration required when the terminal device carries out discrete synchronous；If being judged as YES, it is determined that the method for synchronization of the terminal device is continuous synchronization mode；Otherwise, it determines the method for synchronization of the terminal device is the discrete method of synchronization.Terminal device duration required when carrying out discrete synchronous can be provided by base station broadcast or by agreement.
It further, is a kind of paging mechanism schematic diagram of unlicensed spectrum provided in an embodiment of the present invention please also refer to Fig. 2 a；The position where PO in Fig. 2 a is that the terminal device and the base station precalculate out, COD in Fig. 2 a refers to Channel holding time at PO, due to there is LBT Duration (i.e. LBT duration), so the terminal device recognized listening paging message at the time of be in the position where POUE, therefore, first duration is at the time of entering sleep state from the terminal device to the time interval POUE.T1 in Fig. 2 a is the interval duration of initial position (preamble) of the PO apart from the Channel holding time where the PO；T2 is duration required when the terminal device carries out discrete synchronous, can learn that T1 is greater than T2 from Fig. 2 a, and therefore, the method for synchronization determined by the corresponding terminal device of Fig. 2 a is the discrete method of synchronization；T3 is described preset to wake up duration in advance, that is T3 is the wake-up duration in advance relative to POUE, from Fig. 2 a, the corresponding terminal device of Fig. 2 a was waken up in the LBT duration, therefore, the terminal device will start to carry out discrete synchronization after the LBT duration and when encountering preamble.
S206 is synchronized according to the identified method of synchronization, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time；
Specifically, if the terminal device after waking up was not in the LBT duration, the terminal device can be synchronized by the identified method of synchronization immediately, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time.If the terminal device after waking up was in the LBT duration, then the terminal device needs to wait for the end of LBT duration, and the method for synchronization determined by beginning through when encountering first preamble synchronizes, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time.
S207 calculates second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time；
Specifically, the process for calculating second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time may refer to above-mentioned S202, it is not discussed here.
S208, when second duration be greater than preset duration threshold value when, by second duration with it is described pre- If in advance wake up duration difference as new target duration, and go successively to the sleep state and start timing；
Specifically, when second duration is greater than preset duration threshold value, using second duration and the preset difference of duration that wakes up in advance as new target duration, and it goes successively to the sleep state and starts timing, i.e. in S204 to circulate operation is executed between S208, until second duration is less than the preset duration threshold value.
S209, it is lasting to keep listening to state when second duration is less than the preset duration threshold value, until listening to the paging message sent by base station in the PO；
Specifically, S209 step and S208 step are mutually arranged side by side, i.e., when second duration is less than the preset duration threshold value, no longer execute S208 step, but state is listened into lasting holding by the terminal device, until listening to the paging message sent by base station in the PO.Since the terminal device can calculate the time interval for the PO that current time is safeguarded apart from the base station after being waken up, whether need to listen to the paging message at this time with determination, it can be guaranteed that the paging message is listened in determination to the terminal device again when close to the PO, to guarantee that the terminal device will not miss this paging because listening to less than the paging message.
Terminal device in the embodiment of the present invention can calculate the first duration at the time of PO enters sleep state apart from terminal device according to PF and PO, and start timing when entering the sleep state, and when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, the second duration of current time distance PO is calculated；Wherein, a length of first duration and the preset difference for waking up duration in advance when target；When the second duration be greater than preset duration threshold value when, using the second duration in advance wake up duration difference as new target duration, and go successively to sleep state and start timing；It is lasting to keep listening to state when the second duration is less than duration threshold value, until listening to the paging message sent by base station in PO；It can be seen that, terminal device can be by obtaining current frame information to calculate the duration of distance PO after each wake up, and determine that going successively to sleep state still persistently keeps listening to state, can listen to the paging message of base station transmission so as to guarantee terminal device in an unlicensed spectrum every time according to calculated duration；Moreover, the size between duration required when by judging that third duration carries out discrete synchronous with terminal device, can determine the method for synchronization that terminal device should use, lead to miss to avoid because of synchronous overlong time PO is further ensured that terminal device can accurately listen to the paging message of base station transmission.
Fig. 3 is referred to again, is the flow diagram of another paging method based on unlicensed spectrum provided in an embodiment of the present invention, the method may include:
S301, the terminal device calculate the PF and PO, and obtain corresponding frame information in the first Channel holding time where at the time of the terminal device enters sleep state；
S302, according to corresponding frame information in the PF, the PO and first Channel holding time, it determines corresponding frame information in the second channel holding time where the PO, and calculates first duration of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time；
S303, corresponding frame information in the second channel holding time where the PO calculate the third duration between leader sequence preamble of the PO apart from the second channel holding time, and start timing when entering the sleep state；
Wherein, the specific implementation of S301 to S303 step may refer to the S201 to S203 in above-mentioned Fig. 2 corresponding embodiment, be not discussed here.
S304 into wake-up states, and is detected when the duration of institute's timing reaches target duration and described preset is waken up duration in advance；
Specifically, the terminal device will be waken up when the duration of terminal device institute timing reaches target duration, and wake-up states are in, and detect and described preset wake up duration in advance.Wherein, a length of first duration and the preset difference for waking up duration in advance when the target.
S305, when it is described it is preset wake up duration in advance and be at least the third duration when, synchronized according to continuous synchronization mode, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time；
Specifically, when detecting that the preset duration of wake-up in advance is at least the third duration, the terminal device will be synchronized according to continuous synchronization mode always, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time.Wherein, while the preset duration of wake-up in advance is at least the third duration, synchronous duration, the duration of interception system message and other factors for needing to wake up in advance can also be considered together.
S306 calculates second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time；
Specifically, the process for calculating second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time may refer to above-mentioned S302, it is not discussed here.
S307 using second duration and the preset difference for waking up duration in advance as new target duration, and goes successively to the sleep state and starts timing when second duration is greater than preset duration threshold value；
Specifically, when second duration is greater than preset duration threshold value, using second duration and the preset difference of duration that wakes up in advance as new target duration, and it goes successively to the sleep state and starts timing, i.e. in S304 to circulate operation is executed between S307, until second duration is less than the preset duration threshold value.
S308, it is lasting to keep listening to state when second duration is less than the preset duration threshold value, until listening to the paging message sent by base station in the PO；
Specifically, S208 step and S307 step are mutually arranged side by side, i.e., when second duration is less than the preset duration threshold value, no longer execute S307 step, but persistently kept listening to state by the terminal device, until listening to the paging message sent by base station in the PO.Since the terminal device can calculate the time interval for the PO that current time is safeguarded apart from the base station after being waken up, whether need to listen to the paging message at this time with determination, it can be guaranteed that the paging message is listened in determination to the terminal device again when close to the PO, to guarantee that the terminal device will not miss this paging because listening to less than the paging message.
Terminal device in the embodiment of the present invention can calculate the first duration at the time of PO enters sleep state apart from terminal device according to PF and PO, and start timing when entering the sleep state, and when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, the second duration of current time distance PO is calculated；Wherein, a length of first duration and the preset difference for waking up duration in advance when target；When the second duration be greater than preset duration threshold value when, using the second duration in advance wake up duration difference as new target duration, and go successively to sleep state and start timing；When the second duration is less than It is lasting to keep listening to state when duration threshold value, until listening to the paging message sent by base station in PO；It can be seen that, terminal device can be by obtaining current frame information to calculate the duration of distance PO after each wake up, and determine that going successively to sleep state still persistently keeps listening to state, can listen to the paging message of base station transmission so as to guarantee terminal device in an unlicensed spectrum every time according to calculated duration；Moreover, setting at least to third duration by the way that duration will be waken up in advance, and synchronized always by continuous synchronization mode, lead to miss PO to avoid because of synchronous overlong time, is further ensured that terminal device can accurately listen to the paging message of base station transmission.
Fig. 4 is referred to, is the flow diagram of another paging method based on unlicensed spectrum provided in an embodiment of the present invention, the method may include:
S401, base station calculates paging frame PF and paging occasion PO, and calculates the first duration at the time of the PO enters sleep state apart from terminal device according to the PF and the PO, and start timing when the terminal device enters the sleep state；
Specifically, the process that the base station calculates the PF and PO can be with are as follows: the base station calculates the PF and the PO according to information such as the mark of the terminal device and DRX, the method for calculating the PF and PO is the prior art, is not discussed here.While the base station calculates the PF and PO, terminal device can also calculate the PF and PO by identical method, the base station and the terminal device can calculate the first duration at the time of the PO enters sleep state apart from the terminal device according to the PF and the PO respectively, and start timing when the terminal device enters the sleep state.
Wherein, the detailed process for calculating first duration can be with are as follows: obtains corresponding frame information in the first Channel holding time where at the time of the terminal device enters sleep state, and according to corresponding frame information in the PF, the PO and first Channel holding time, it determines corresponding frame information in the second channel holding time where the PO, and calculates first duration of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time.Such as, assuming that there is 3 frames in a Channel holding time, each frame has 8 subframes, the PF calculated is 34, PO is 3, if being the 0 work song frame (corresponding frame information in i.e. described first Channel holding time) of No. 0 frame of No. 0 Channel holding time at the time of into sleep state, then PF is second in the 12nd Channel holding time Frame (assuming that frame number and subframe numbers are all since 0), then PO is the 4th subframe (corresponding frame information in the i.e. described second channel holding time) in second frame in the 12nd Channel holding time, therefore, the duration that first duration T=11* (3*8+1) * t+ (8+3+1) * t, t of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time is a subframe can be calculated.
S402 sends synchronization signal, and obtain the method for synchronization of the terminal device when the duration of institute's timing reaches target duration, and channel success has been seized in the base station；
Specifically, the duration when institute's timing reaches target duration, and when channel success has been seized in the base station, the base station sends synchronization signal, and obtains the method for synchronization of the terminal device.Wherein, a length of first duration and the preset difference for waking up duration in advance when the target, and a length of terminal device is in dormant duration when the target, the i.e. described terminal device starts timing when entering the sleep state and when the duration of institute's timing reaches the target duration, and the terminal device will be waken up.Wherein, the base station also will do it upstream operation and/or downstream operation in the prior art, be not discussed here while sending the synchronization signal.
Further, the detailed process that the base station obtains the method for synchronization of the terminal device can be with are as follows: is judged according to pre-set agreement or rule the preset duration that wakes up in advance, with the method for synchronization of the determination terminal device.Wherein, it can be with to the preset agreement that is judged of duration or the rule of waking up in advance are as follows: if the preset duration that wakes up in advance is greater than or equal to duration T2 required when the terminal device carries out discrete synchronous, then judge whether the duration T1 of initial position of the PO apart from Channel holding time where it is less than T2, if being judged as YES, then determine that the method for synchronization is continuous synchronization mode, otherwise, it determines the method for synchronization is the discrete method of synchronization；It or can be with are as follows: if the preset duration that wakes up in advance is greater than or equal to T1, then determine that the method for synchronization is continuous synchronization mode, if the preset duration that wakes up in advance is less than T1, further judge whether the preset duration of wake-up in advance is greater than or equal to T2, if being judged as more than or equal to T2 (illustrating that T1 is greater than T2), then determine that the method for synchronization is the discrete method of synchronization, if being judged as less than T2, it is determined that the terminal device synchronization failure.In the present invention to it is described it is preset wake up the agreement that is judged of duration in advance or rule can also be other forms (it is synchronous need to only to guarantee that the terminal device will not miss), no longer repeated one by one here.
S403 determines the time window for sending paging message according to the method for synchronization, and sends the paging message to the terminal device in the time window；
Specifically, when getting the method for synchronization is continuous synchronization mode, search the preamble for first Channel holding time that the terminal device enters after wake-up states, and time window is arranged after the preamble, and send the paging message to the terminal device in the time window；When getting the method for synchronization is the discrete method of synchronization, according to the terminal device carry out it is discrete synchronize that required duration determines the terminal device synchronize successfully the moment, and by time window setting it is described synchronize successfully the moment after, and the paging message is sent to the terminal device in the time window, such as, when getting the method for synchronization is the discrete method of synchronization, obtain the terminal device carry out it is discrete synchronize required duration T2, the base station time window can be arranged after T2 duration.Since the base station is at the time of sending the paging message according to the synchronization duration selection of the terminal device actual wake-up moment and the terminal device, it is possible to which the paging message that the base station is sent can be listened to by guaranteeing the terminal device every time.
The base station of the embodiment of the present invention reaches target duration in the duration of institute's timing, and base station seized channel success when, it is synchronized with the terminal device in wake-up states, and obtain the method for synchronization of terminal device, and the time window for sending paging message is determined according to the method for synchronization, and send paging message to terminal device in time window；It can be seen that thereby may be ensured that terminal device every time can listen to the paging message of base station transmission at the time of base station is the synchronization duration selection transmission paging message for waking up moment and terminal device actual according to terminal device.
Fig. 5 is referred to, is a kind of structural schematic diagram of terminal device provided in an embodiment of the present invention, the terminal device 1 may include: receiving module 11 and processing module 12；The terminal device 1 is for executing above-mentioned Fig. 1 to a kind of paging method based on unlicensed spectrum shown in Fig. 3.
The processing module 12 calculates the first duration at the time of the PO enters sleep state apart from the terminal device 1 for calculating paging frame PF and paging occasion PO, and according to the PF and the PO, and starts timing when entering the sleep state；
Specifically, the process that the processing module 12 calculates the PF and PO can be with are as follows: the processing module 12 calculates the PF and described according to information such as the mark of the terminal device 1 and DRX PO, the method for calculating the PF and PO is the prior art, is not discussed here.While the processing module 12 calculates the PF and PO, base station can also calculate the PF and PO by identical method, and the base station can find the position of the PO according to the PF and the PO, and send paging message on the position of the PO.
After the processing module 12 gets the PF and PO, the first duration at the time of the PO enters sleep state apart from the terminal device 1 can be calculated according to the PF and the PO.Such as, assuming that there is 3 frames in a Channel holding time, each frame has 8 subframes, the PF calculated is 34, PO is 3, if being 0 work song frame of No. 0 frame of No. 0 Channel holding time at the time of into sleep state, then PF is second frame (assuming that frame number and subframe numbers are all since 0) in the 12nd Channel holding time, then PO is the 4th subframe (3 work song frames of second frame in the 12nd Channel holding time, that is 3) PO is, it is the first duration T=11* (3*8+1) * t+ (8+3+1) * t that first computing module, which can calculate PO distance to enter the time interval at sleep moment, t is the duration of a subframe.
The processing module 12, for into wake-up states, and according to the frame information at current time, calculating second duration of the current time apart from the PO when the duration of institute's timing reaches target duration；A length of first duration and the preset difference for waking up duration in advance when the target；
Specifically, a length of first duration and the preset difference for waking up duration in advance when the target.When the duration of 12 timing of processing module reaches the target duration, the terminal device 1 will be waken up, and it is in wake-up states, if the terminal device 1 after waking up was not in the LBT duration, the processing module 12 can be synchronized by the corresponding method of synchronization immediately, and after synchronization obtain current time Channel holding time in corresponding frame information, and second duration of the current time apart from the PO is calculated according to the frame information at current time, the method for calculating second duration is identical as the method that first computing module calculates first duration, it is not discussed here.If the terminal device 1 after waking up was in the LBT duration, then the processing module 12 needs to wait for the end of LBT duration, and the corresponding method of synchronization is begun through when encountering first leader sequence preamble and is synchronized, and corresponding frame information in the Channel holding time at current time is obtained after synchronization, and second duration of the current time apart from the PO is calculated according to the frame information at current time.
The processing module 12 is used for when second duration is greater than preset duration threshold value, will be described Second duration and the preset difference for waking up duration in advance go successively to the sleep state and start timing as new target duration；
Specifically, when second duration is greater than preset duration threshold value, the processing module 12 is using second duration and the preset difference of duration that wakes up in advance as new target duration, and it goes successively to the sleep state and starts timing, circulate operation is executed between second computing module and the determining notification module, until second duration is less than the preset duration threshold value.
The receiving module 11, for when second duration is less than the preset duration threshold value, state to be listened in lasting holding, until listening to the paging message sent by base station in the PO；
Specifically, when second duration is less than the preset duration threshold value, the processing module 12 does not continue to enter the sleep state and starts timing, but persistently keeps listening to state by the receiving module 11, until listening to the paging message sent by base station in the PO.Since the terminal device 1 can calculate the time interval for the PO that current time is safeguarded apart from the base station after being waken up, whether need to listen to the paging message at this time with determination, it can be guaranteed that the paging message is listened in determination to the terminal device 1 again when close to the PO, to guarantee that the terminal device 1 will not miss this paging because listening to less than the paging message.
Further, the processing module 12 is for calculating paging frame PF and paging occasion PO, and the PF obtained according to the receiving module 11 and the PO calculate the first duration at the time of the PO enters sleep state apart from the terminal device 1, and start timing when entering the sleep state, it specifically includes:
Calculate the PF and the PO, and obtain corresponding frame information in the first Channel holding time where at the time of the terminal device 1 enters sleep state, according to the PF, corresponding frame information in the PO and first Channel holding time, determine corresponding frame information in the second channel holding time where the PO, and calculate first duration of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time, corresponding frame information in second channel holding time where the PO, calculate the third duration between leader sequence preamble of the PO apart from the second channel holding time, and start timing when entering the sleep state.
Specifically, can also further be obtained after the processing module 12 calculates the PF and PO Corresponding frame information in the first Channel holding time where at the time of taking the terminal device 1 to enter sleep state, for example, the available corresponding frame information into first Channel holding time of the processing module 12 is 3 work song frames of No. 0 frame of No. 2 Channel holding times.
Such as, assuming that there is 3 frames in a Channel holding time, each frame has 8 subframes, the PF calculated is 34, PO is 3, if being the 0 work song frame (corresponding frame information in i.e. described first Channel holding time) of No. 0 frame of No. 0 Channel holding time at the time of into sleep state, then the processing module 12 can determine that PF is second frame (assuming that frame number and subframe numbers are all since 0) in the 12nd Channel holding time, and determine that PO is the 4th subframe (corresponding frame information in the i.e. described second channel holding time) in second frame in the 12nd Channel holding time, therefore, the determining computing unit can calculate first duration T=11* of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time (3*8+1) * t+ (8+3+1) * t, t are the durations of a subframe.
The processing module 12 can be according to corresponding frame information in the second channel holding time where the PO, the third duration between leader sequence preamble (initial position of the i.e. described second channel holding time) of the PO apart from the second channel holding time is calculated, and starts timing when entering the sleep state.Such as, assuming that PF is second frame (assuming that frame number and subframe numbers are all since 0) in the 12nd Channel holding time, PO is the 4th subframe (corresponding frame information in the i.e. described second channel holding time) in second frame in the 12nd Channel holding time, then the processing module 12 can calculate third duration T1=(8+3+1) the * t between preamble (the specially initial position of preamble, the length of a preamble are equal to the length of a subframe) of the PO apart from the second channel holding time.
Further, the processing module 12 is used for the frame information according to current time, calculates second duration of the current time apart from the PO, specifically includes:
When the preset duration of wake-up in advance is at least duration required when the terminal device 1 carries out discrete synchronous, required duration determines the method for synchronization of the terminal device 1 when carrying out discrete synchronous with the terminal device 1 according to the third duration, it is synchronized according to the identified method of synchronization, and after synchronously completing, interception system message, obtain current time where third Channel holding time in corresponding frame Information calculates second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time.Wherein, a length of first duration and the preset difference for waking up duration in advance when the target；The terminal device 1 duration required when carrying out discrete synchronous can be provided by base station broadcast or by agreement.
Further, required duration determines the method for synchronization of the terminal device 1 when the processing module 12 is used to carry out discrete synchronous with the terminal device 1 according to the third duration, specifically includes:
Judge whether the third duration is less than duration required when the terminal device 1 carries out discrete synchronous, if being judged as YES, the method of synchronization for then determining the terminal device 1 is continuous synchronization mode, if being judged as NO, it is determined that the method for synchronization of the terminal device 1 is the discrete method of synchronization.
Further, the processing module 12 according to the frame information at current time when calculating second duration of the current time apart from the PO for specifically including:
When the preset duration of wake-up in advance is at least the third duration, it is synchronized according to continuous synchronization mode, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time, second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time is calculated.
Wherein, while the preset duration of wake-up in advance is at least the third duration, synchronous duration, the duration of interception system message and other factors for needing to wake up in advance can also be considered together.
The receiving module 11 in above-mentioned Fig. 5 corresponding embodiment can be the receiver of entity device (terminal device 1), and the processing module 12 can be the processor of entity device (terminal device 1).
Terminal device in the embodiment of the present invention can calculate the first duration at the time of PO enters sleep state apart from terminal device according to PF and PO, and start timing when entering the sleep state, and when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, the second duration of current time distance PO is calculated；Wherein, a length of first duration and the preset difference for waking up duration in advance when target；When the second duration be greater than preset duration threshold value when, using the second duration in advance wake up duration difference as new target duration, and go successively to sleep state and start timing；It is lasting to keep listening to state when the second duration is less than duration threshold value, until listening to the paging message sent by base station in PO；It can be seen that terminal device can be by obtaining current frame information to calculate distance PO after each wake up Duration, and determine that going successively to sleep state still persistently keeps listening to state, and the paging message of base station transmission can be listened to so as to guaranteeing terminal device in an unlicensed spectrum every time according to calculated duration；And, size when by judging that third duration carries out discrete synchronous with terminal device between required duration, it can determine the method for synchronization that terminal device should use, PO is led to miss to avoid because of synchronous overlong time, is further ensured that terminal device can accurately listen to the paging message of base station transmission.
Fig. 6 is referred to, is a kind of structural schematic diagram of base station provided in an embodiment of the present invention, the base station 2 may include: processing module 21, sending module 23, receiving module 22；The base station 2 is for executing a kind of above-mentioned paging method based on unlicensed spectrum shown in Fig. 4.
The processing module 21 calculates the first duration at the time of the PO enters sleep state apart from terminal device for calculating paging frame PF and paging occasion PO, and according to the PF and the PO, and starts timing when the terminal device enters the sleep state；
Specifically, the process that the processing module 21 calculates the PF and PO can be with are as follows: calculate the PF and the PO according to information such as the mark of the terminal device and DRX, the method for calculating the PF and PO is the prior art, is not discussed here.While the processing module 21 calculates the PF and PO, terminal device can also calculate the PF and PO by identical method, the processing module 21 and the terminal device can calculate the first duration at the time of the PO enters sleep state apart from the terminal device according to the PF and the PO respectively, and start timing when the terminal device enters the sleep state.
Wherein, the detailed process that the processing module 21 calculates first duration can be with are as follows: obtains corresponding frame information in the first Channel holding time where at the time of the terminal device enters sleep state, and according to corresponding frame information in the PF, the PO and first Channel holding time, it determines corresponding frame information in the second channel holding time where the PO, and calculates first duration of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time.Such as, assuming that there is 3 frames in a Channel holding time, each frame has 8 subframes, the PF calculated is 34, PO is 3, if being the 0 work song frame (corresponding frame information in i.e. described first Channel holding time) of No. 0 frame of No. 0 Channel holding time at the time of into sleep state, then PF is second frame (assuming that frame number and subframe numbers are all since 0) in the 12nd Channel holding time, then PO is the 12nd The 4th subframe (corresponding frame information in the i.e. described second channel holding time) of second frame in a Channel holding time, therefore, the processing module 21 can calculate the duration that first duration T=11* (3*8+1) * t+ (8+3+1) * t, t of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time is a subframe.
The sending module 23 sends synchronization signal for reaching target duration when the durations of 21 timing of processing module, and when having seized channel success；A length of first duration and the preset difference for waking up duration in advance when the target, and a length of terminal device is in dormant duration when the target；
Specifically, the duration when institute's timing reaches target duration, and when channel success has been seized in the base station 2, the sending module 23 sends synchronization signal.Wherein, a length of first duration and the preset difference for waking up duration in advance when the target, and a length of terminal device is in dormant duration when the target, the i.e. described terminal device starts timing when entering the sleep state and when the duration of institute's timing reaches the target duration, and the terminal device will be waken up.Wherein, the sending module 23 also will do it upstream operation and/or downstream operation in the prior art, be not discussed here while sending the synchronization signal.
The receiving module 22, for obtaining the method for synchronization of the terminal device after the sending module 23 sends the synchronization signal；
Specifically, the detailed process that the receiving module 22 obtains the method for synchronization of the terminal device can be with are as follows: judged according to pre-set agreement or rule the preset duration that wakes up in advance, with the method for synchronization of the determination terminal device.Wherein, it can be with to the preset agreement that is judged of duration or the rule of waking up in advance are as follows: if the preset duration that wakes up in advance is greater than or equal to duration T2 required when the terminal device carries out discrete synchronous, then judge whether the duration T1 of initial position of the PO apart from Channel holding time where it is less than T2, if being judged as YES, then determine that the method for synchronization is continuous synchronization mode, otherwise, it determines the method for synchronization is the discrete method of synchronization；It or can be with are as follows: if the preset duration that wakes up in advance is greater than or equal to T1, then determine that the method for synchronization is continuous synchronization mode, if the preset duration that wakes up in advance is less than T1, further judge whether the preset duration of wake-up in advance is greater than or equal to T2, if being judged as more than or equal to T2 (illustrating that T1 is greater than T2), then determine that the method for synchronization is the discrete method of synchronization, if being judged as less than T2, it is determined that the terminal device synchronization failure.To institute in the present invention State it is preset wake up the agreement that is judged of duration in advance or rule can also be other forms (it is synchronous need to only to guarantee that the terminal device will not miss), no longer repeated one by one here.
The processing module 21, the method for synchronization for being obtained according to the receiving module 22 determine the time window for sending paging message；
Specifically, the processing module 21 is specifically used for when getting the method for synchronization is continuous synchronization mode, the leader sequence preamble for first Channel holding time that the terminal device enters after wake-up states is searched, and time window is arranged after the preamble；Or, the processing module 21 is specifically used for when getting the method for synchronization is the discrete method of synchronization, carried out the discrete moment that synchronizes successfully for synchronizing required duration and determining the terminal device according to the terminal device, and by time window setting it is described synchronize successfully the moment after.
The sending module 23, for sending the paging message to the terminal device in the time window that the processing module 21 is determined.
The receiving module 22 in above-mentioned Fig. 6 corresponding embodiment can be the receiver of entity device (base station 2), the sending module 23 can be the transmitter of entity device (base station 2), and the processing module 21 can be the processor of entity device (base station 2).
The base station 2 of the embodiment of the present invention reaches target duration in the duration of institute's timing, and base station 2 seized channel success when, it is synchronized with the terminal device in wake-up states, and obtain the method for synchronization of terminal device, and the time window for sending paging message is determined according to the method for synchronization, and send paging message to terminal device in time window；It can be seen that thereby may be ensured that terminal device every time can listen to the paging message of base station transmission at the time of base station is the synchronization duration selection transmission paging message for waking up moment and terminal device actual according to terminal device.
Fig. 7 is referred to, is a kind of structural schematic diagram of paging system based on unlicensed spectrum provided in an embodiment of the present invention, which includes: terminal device 100 and base station 200；
The terminal device 100 calculates the first duration at the time of the PO enters sleep state apart from the terminal device 100 for calculating paging frame PF and paging occasion PO, and according to the PF and the PO, and starts timing when entering the sleep state；
The terminal device 100 is also used to when the duration of institute's timing reaches target duration, into wake-up shape State, and according to the frame information at current time, calculate second duration of the current time apart from the PO；A length of first duration and the preset difference for waking up duration in advance when the target；
The terminal device 100 is also used to when second duration is greater than preset duration threshold value, using second duration and the preset difference for waking up duration in advance as new target duration, and is gone successively to the sleep state and is started timing；
The terminal device 100 is also used to when second duration is less than the preset duration threshold value, lasting to keep listening to state, until listening to the paging message that base station 200 is sent in the PO；
The base station 200 for calculating the PF and the PO, and calculates according to the PF and the PO position of the PO, and the paging message is sent on the position of the PO.
Further, the terminal device 100 is for calculating paging frame PF and paging occasion PO, and the first duration at the time of the PO enters sleep state apart from the terminal device 100 is calculated according to the PF and the PO, and start timing when entering the sleep state, it specifically includes:
Calculate the PF and the PO, and obtain corresponding frame information in the first Channel holding time where at the time of the terminal device 100 enters sleep state, according to the PF, corresponding frame information in the PO and first Channel holding time, determine corresponding frame information in the second channel holding time where the PO, and calculate first duration of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time, and according to corresponding frame information in the second channel holding time where the PO, calculate the third duration between leader sequence preamble of the PO apart from the second channel holding time, and start timing when entering the sleep state.
Such as, assuming that there is 3 frames in a Channel holding time, each frame has 8 subframes, the PF calculated is 34, PO is 3, if being the 0 work song frame (corresponding frame information in i.e. described first Channel holding time) of No. 0 frame of No. 0 Channel holding time at the time of into sleep state, then PF is second frame (assuming that frame number and subframe numbers are all since 0) in the 12nd Channel holding time, then PO is the 4th subframe (corresponding frame information in the i.e. described second channel holding time) in second frame in the 12nd Channel holding time, therefore, first duration T=11* (3*8+1) * t+ (8+3+1) * t of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time can be calculated, t is The duration of one subframe；The PO can also be calculated apart from the second channel Third duration T1=(8+3+1) * t between the preamble (the specially initial position of preamble, the length of a preamble are equal to the length of a subframe) of holding time.
Further, the terminal device 100 is used for when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, is calculated second duration of the current time apart from the PO, is specifically included:
When the duration of institute's timing reaches target duration, into wake-up states, and it detects and described preset wakes up duration in advance, and when the preset duration of wake-up in advance is at least duration required when the terminal device 100 carries out discrete synchronous, required duration determines the method for synchronization of the terminal device 100 when carrying out discrete synchronous with the terminal device 100 according to the third duration, it is synchronized according to the identified method of synchronization, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time, calculate second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time.
Wherein, if the terminal device 100 after waking up was not in the LBT duration, the terminal device 100 can be synchronized by the identified method of synchronization immediately, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time.If the terminal device 100 after waking up was in the LBT duration, then the terminal device 100 needs to wait for the end of LBT duration, and the method for synchronization determined by beginning through when encountering first preamble synchronizes, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time.
Further, required duration determines the method for synchronization of the terminal device 100 when the terminal device 100 is used to carry out discrete synchronous with the terminal device 100 according to the third duration, specifically includes:
Judge whether the third duration is less than duration required when the terminal device 100 carries out discrete synchronous, if being judged as YES, the method of synchronization for then determining the terminal device 100 is continuous synchronization mode, otherwise, it determines the method for synchronization of the terminal device 100 is the discrete method of synchronization.
Further, the terminal device 100 is used for when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, is calculated second duration of the current time apart from the PO, is specifically included:
When the duration of institute's timing reaches target duration, into wake-up states, and it detects and described preset wakes up duration in advance, and when the preset duration of wake-up in advance is at least the third duration, it is synchronized according to continuous synchronization mode, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time, second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time is calculated.
Terminal device 100 in the embodiment of the present invention can calculate the first duration at the time of PO enters sleep state apart from terminal device 100 according to PF and PO, and start timing when entering the sleep state, and when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, the second duration of current time distance PO is calculated；Wherein, a length of first duration and the preset difference for waking up duration in advance when target；When the second duration be greater than preset duration threshold value when, using the second duration in advance wake up duration difference as new target duration, and go successively to sleep state and start timing；It is lasting to keep listening to state when the second duration is less than duration threshold value, until listening to the paging message sent by base station 200 in PO；It can be seen that, terminal device 100 can be by obtaining current frame information to calculate the duration of distance PO after each wake up, and determine that going successively to sleep state still persistently keeps listening to state, can listen to the paging message of the transmission of base station 200 so as to guarantee terminal device 100 in an unlicensed spectrum every time according to calculated duration；And, size when by judging that third duration carries out discrete synchronous with terminal device 100 between required duration, it can determine the method for synchronization that terminal device 100 should use, PO is led to miss to avoid because of synchronous overlong time, is further ensured that terminal device 100 can accurately listen to the paging message of the transmission of base station 200.
Fig. 8 is referred to again, is a kind of structural schematic diagram of paging system based on unlicensed spectrum provided in an embodiment of the present invention, which includes: base station 400 and terminal device 300；
The base station 400, for calculating paging frame PF and paging occasion PO, and the first duration at the time of the PO enters sleep state apart from terminal device 300 is calculated according to the PF and the PO, and start timing when the terminal device 300 enters the sleep state；
The base station 400 is also used to the duration when institute's timing and reaches target duration, and when channel success has been seized in the base station 400, sends synchronization signal, and obtain the method for synchronization of the terminal device 300；A length of first duration and the preset difference for waking up duration in advance when the target, and a length of institute when the target It states terminal device 300 and is in dormant duration；
The base station 400 is also used to determine the time window for sending paging message according to the method for synchronization, and sends the paging message to the terminal device 300 in the time window；
The terminal device 300, for calculating paging frame PF and paging occasion PO, and the first duration at the time of the PO enters sleep state apart from terminal device 300 is calculated according to the PF and the PO, and start timing when the terminal device 300 enters the sleep state, and when the duration of institute's timing reaches target duration, into wake-up states, and continue to keep listening to state, until listening to the paging message sent by base station 400.
Such as, assuming that there is 3 frames in a Channel holding time, each frame has 8 subframes, the PF calculated is 34, PO is 3, if being the 0 work song frame (corresponding frame information in i.e. described first Channel holding time) of No. 0 frame of No. 0 Channel holding time at the time of into sleep state, then PF is second frame (assuming that frame number and subframe numbers are all since 0) in the 12nd Channel holding time, then PO is the 4th subframe (corresponding frame information in the i.e. described second channel holding time) in second frame in the 12nd Channel holding time, therefore, first duration T=11* (3*8+1) * t+ (8+3+1) * t of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time can be calculated, t is The duration of one subframe.
Wherein, the detailed process that the base station 400 obtains the method for synchronization of the terminal device 300 can be with are as follows: is judged according to pre-set agreement or rule the preset duration that wakes up in advance, with the method for synchronization of the determination terminal device 300.Wherein, it can be with to the preset agreement that is judged of duration or the rule of waking up in advance are as follows: if the preset duration that wakes up in advance is greater than or equal to duration T2 required when the terminal device 300 carries out discrete synchronous, then judge whether the duration T1 of initial position of the PO apart from Channel holding time where it is less than T2, if being judged as YES, then determine that the method for synchronization is continuous synchronization mode, otherwise, it determines the method for synchronization is the discrete method of synchronization；It or can be with are as follows: if the preset duration that wakes up in advance is greater than or equal to T1, then determine that the method for synchronization is continuous synchronization mode, if the preset duration that wakes up in advance is less than T1, further judge whether the preset duration of wake-up in advance is greater than or equal to T2, if being judged as more than or equal to T2 (illustrating that T1 is greater than T2), then determine that the method for synchronization is the discrete method of synchronization, if being judged as less than T2, it is determined that 300 synchronization failure of terminal device. In the present invention to it is described it is preset wake up the agreement that is judged of duration in advance or rule can also be other forms (it is synchronous need to only to guarantee that the terminal device 300 will not miss), no longer repeated one by one here.
Further, the base station 400 is used to determine the time window for sending paging message according to the method for synchronization, and sends the paging message to the terminal device 300 in the time window, specifically includes:
When getting the method for synchronization is continuous synchronization mode, search the leader sequence preamble for first Channel holding time that the terminal device 300 enters after wake-up states, and time window is arranged and sends the paging message to the terminal device 300 after the preamble, and in the time window；
When getting the method for synchronization is the discrete method of synchronization, according to the terminal device 300 carry out it is discrete synchronize that required duration determines the terminal device 300 synchronize successfully the moment, and by time window setting it is described synchronize successfully the moment after, and send the paging message to the terminal device 300 in the time window.
The base station 400 of the embodiment of the present invention reaches target duration in the duration of institute's timing, and base station 400 seized channel success when, it is synchronized with the terminal device 300 in wake-up states, and obtain the method for synchronization of terminal device 300, and the time window for sending paging message is determined according to the method for synchronization, and send paging message to terminal device 300 in time window；It can be seen that thereby may be ensured that terminal device 300 every time can listen to the paging message of the transmission of base station 400 at the time of base station 400 is the synchronization duration selection transmission paging message for waking up moment and terminal device 300 actual according to terminal device 300.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, it is that relevant hardware can be instructed to complete by computer program, the program can be stored in a computer-readable storage medium, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic disk, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..
The above disclosure is only the preferred embodiments of the present invention, and of course, the scope of rights of the present invention cannot be limited by this, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.

Claims (16)

  1. A kind of paging method based on unlicensed spectrum characterized by comprising
    Terminal device calculates paging frame PF and paging occasion PO, and calculates the first duration at the time of the PO enters sleep state apart from the terminal device according to the PF and the PO, and start timing when entering the sleep state；
    When the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, second duration of the current time apart from the PO is calculated；A length of first duration and the preset difference for waking up duration in advance when the target；
    When second duration is greater than preset duration threshold value, using second duration and the preset difference for waking up duration in advance as new target duration, and goes successively to the sleep state and start timing；Alternatively,
    It is lasting to keep listening to state when second duration is less than the preset duration threshold value, until listening to the paging message that base station is sent in the PO.
  2. The method as described in claim 1, it is characterized in that, the terminal device calculates paging frame PF and paging occasion PO, and the first duration at the time of the PO enters sleep state apart from the terminal device is calculated according to the PF and the PO, and start timing when entering the sleep state, comprising:
    The terminal device calculates the PF and PO, and obtains corresponding frame information in the first Channel holding time where at the time of the terminal device enters sleep state；
    According to corresponding frame information in the PF, the PO and first Channel holding time, it determines corresponding frame information in the second channel holding time where the PO, and calculates first duration of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time；
    Corresponding frame information in second channel holding time where the PO calculates the third duration between leader sequence preamble of the PO apart from the second channel holding time, and starts timing when entering the sleep state.
  3. Method according to claim 2, which is characterized in that it is described when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, calculate second duration of the current time apart from the PO, comprising:
    When the duration of institute's timing reaches target duration, into wake-up states, and detects and described preset wake up duration in advance；
    When the preset duration of wake-up in advance is at least duration required when the terminal device carries out discrete synchronous, required duration determines the method for synchronization of the terminal device when carrying out discrete synchronous with the terminal device according to the third duration；
    It is synchronized according to the identified method of synchronization, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time；
    Calculate second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time.
  4. Method as claimed in claim 3, which is characterized in that required duration when carrying out discrete synchronous with the terminal device according to the third duration determines the method for synchronization of the terminal device, comprising:
    Judge whether the third duration is less than duration required when the terminal device carries out discrete synchronous；
    If being judged as YES, it is determined that the method for synchronization of the terminal device is continuous synchronization mode；
    Otherwise, it determines the method for synchronization of the terminal device is the discrete method of synchronization.
  5. Method according to claim 2, which is characterized in that it is described when the duration of institute's timing reaches target duration, into wake-up states, and according to the frame information at current time, calculate second duration of the current time apart from the PO, comprising:
    When the duration of institute's timing reaches target duration, into wake-up states, and detects and described preset wake up duration in advance；
    When it is described it is preset wake up duration in advance and be at least the third duration when, synchronized according to continuous synchronization mode, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time；
    Calculate second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time.
  6. A kind of paging method based on unlicensed spectrum characterized by comprising
    Base station calculates paging frame PF and paging occasion PO, and calculates the first duration at the time of the PO enters sleep state apart from terminal device according to the PF and the PO, and start timing when the terminal device enters the sleep state；
    When the duration of institute's timing reaches target duration, and channel success has been seized in the base station, synchronization signal is sent, and obtain the method for synchronization of the terminal device；A length of first duration and the preset difference for waking up duration in advance when the target, and a length of terminal device is in dormant duration when the target；
    The time window for sending paging message is determined according to the method for synchronization, and sends the paging message to the terminal device in the time window.
  7. Method as claimed in claim 6, which is characterized in that it is described that the time window for sending paging message is determined according to the method for synchronization, and the paging message is sent to the terminal device in the time window, comprising:
    When getting the method for synchronization is continuous synchronization mode, search the leader sequence preamble for first Channel holding time that the terminal device enters after wake-up states, and time window is arranged after the preamble, and send the paging message to the terminal device in the time window；
    When getting the method for synchronization is the discrete method of synchronization, according to the terminal device carry out it is discrete synchronize that required duration determines the terminal device synchronize successfully the moment, and by time window setting it is described synchronize successfully the moment after, and send the paging message to the terminal device in the time window.
  8. A kind of terminal device characterized by comprising
    Processing module calculates the first duration at the time of the PO enters sleep state apart from the terminal device for calculating paging frame PF and paging occasion PO, and according to the PF and the PO, and is entering institute Start timing when stating sleep state；
    The processing module, for into wake-up states, and according to the frame information at current time, calculating second duration of the current time apart from the PO when the duration of institute's timing reaches target duration；A length of first duration and the preset difference for waking up duration in advance when the target；
    The processing module, for using second duration and the preset difference for waking up duration in advance as new target duration, and going successively to the sleep state and starting timing when second duration is greater than preset duration threshold value；
    The receiving module, it is lasting to keep listening to state when the second duration for calculating when the processing module is less than the preset duration threshold value, until listening to the paging message sent by base station in the PO.
  9. Terminal device as claimed in claim 8, it is characterized in that, the processing module is for calculating paging frame PF and paging occasion PO, and the PF obtained according to the receiving module and the PO calculate the first duration at the time of the PO enters sleep state apart from the terminal device, and start timing when entering the sleep state, it specifically includes:
    Calculate the PF and the PO, and obtain corresponding frame information in the first Channel holding time where at the time of the terminal device enters sleep state, according to the PF, corresponding frame information in the PO and first Channel holding time, determine corresponding frame information in the second channel holding time where the PO, and calculate first duration of the corresponding frame information between corresponding frame information in the second channel holding time in first Channel holding time, corresponding frame information in second channel holding time where the PO, calculate the third duration between leader sequence preamble of the PO apart from the second channel holding time, and start timing when entering the sleep state.
  10. Terminal device as claimed in claim 9, which is characterized in that the processing module is used for the frame information according to current time, calculates second duration of the current time apart from the PO, specifically includes:
    When the preset duration of wake-up in advance is at least duration required when the terminal device carries out discrete synchronous, required duration determines the method for synchronization of the terminal device when carrying out discrete synchronous with the terminal device according to the third duration, it is synchronized, and synchronously completed according to the identified method of synchronization Afterwards, interception system message, obtain current time where third Channel holding time in corresponding frame information, calculate second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time.
  11. Terminal device as claimed in claim 10, which is characterized in that processing module duration required when being used to carry out discrete synchronous with the terminal device according to the third duration determines the method for synchronization of the terminal device, specifically includes:
    Judge whether the third duration is less than duration required when the terminal device carries out discrete synchronous, if being judged as YES, the method of synchronization for then determining the terminal device is continuous synchronization mode, if being judged as NO, it is determined that the method for synchronization of the terminal device is the discrete method of synchronization.
  12. Terminal device as claimed in claim 9, which is characterized in that the processing module according to the frame information at current time when calculating second duration of the current time apart from the PO for specifically including:
    When the preset duration of wake-up in advance is at least the third duration, it is synchronized according to continuous synchronization mode, and after synchronously completing, interception system message, to obtain corresponding frame information in the third Channel holding time where current time, second duration of the corresponding frame information between corresponding frame information in the third Channel holding time in the second channel holding time is calculated.
  13. A kind of base station characterized by comprising
    Processing module calculates the first duration at the time of the PO enters sleep state apart from terminal device for calculating paging frame PF and paging occasion PO, and according to the PF and the PO, and starts timing when the terminal device enters the sleep state；
    Sending module sends synchronization signal for reaching target duration when the duration of processing module institute timing, and when seizing channel success；A length of first duration and the preset difference for waking up duration in advance when the target, and a length of terminal device is in dormant duration when the target；
    The receiving module, for obtaining the method for synchronization of the terminal device after the sending module sends the synchronization signal；
    The processing module, the method for synchronization for being obtained according to the receiving module determine the time window for sending paging message；
    The sending module, for sending the paging message to the terminal device in the time window that the processing module is determined.
  14. Base station as claimed in claim 13, which is characterized in that the method for synchronization that the processing module is used to be obtained according to the receiving module determines the time window for sending paging message, specifically includes:
    When getting the method for synchronization is continuous synchronization mode, the leader sequence preamble for first Channel holding time that the terminal device enters after wake-up states is searched, and time window is arranged after the preamble；
    When getting the method for synchronization is the discrete method of synchronization, carried out the discrete moment that synchronizes successfully for synchronizing required duration and determining the terminal device according to the terminal device, and by time window setting it is described synchronize successfully the moment after.
  15. A kind of paging system based on unlicensed spectrum characterized by comprising base station and such as described in any item terminal devices of claim 8-12；
    The base station for calculating paging frame PF and paging occasion PO, and calculates according to the PF and the PO position of the PO, and send paging message on the position of the PO.
  16. A kind of paging system based on unlicensed spectrum characterized by comprising terminal device and base station according to claim 13 or 14；
    The terminal device, for calculating paging frame PF and paging occasion PO, and the first duration at the time of the PO enters sleep state apart from terminal device is calculated according to the PF and the PO, and start timing when the terminal device enters the sleep state, and when the duration of institute's timing reaches target duration, into wake-up states, and continue to keep listening to state, until listening to the paging message sent by the base station.
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