CN111418223A - Method for managing timer and terminal equipment - Google Patents

Method for managing timer and terminal equipment Download PDF

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Publication number
CN111418223A
CN111418223A CN201780097266.4A CN201780097266A CN111418223A CN 111418223 A CN111418223 A CN 111418223A CN 201780097266 A CN201780097266 A CN 201780097266A CN 111418223 A CN111418223 A CN 111418223A
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China
Prior art keywords
timer
drx
duration
time
terminal device
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CN201780097266.4A
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CN111418223B (en
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石聪
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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

Abstract

The method is applied to the terminal equipment which works in the unlicensed frequency band and is provided with a Discontinuous Reception (DRX) cycle and a first timer, and comprises the steps that the terminal equipment starts the first timer at the starting time of a first active period of the DRX cycle, the terminal equipment re-determines the duration of the first timer when a Physical Downlink Control Channel (PDCCH) is not monitored on a carrier wave of the unlicensed frequency band between the starting time of the first active period and the failure time of the first timer, and the terminal equipment restarts the first timer at the starting time of a second active period which is adjacent to the first active period.

Description

Method for managing timer and terminal equipment Technical Field
The embodiment of the invention relates to the field of communication, in particular to a method for managing a timer and a terminal device.
Background
In the prior art, packet-based data streams are typically bursty. In other words, the terminal device has data to transmit for a period of time, but has no data to transmit for a subsequent longer period of time. Therefore, if the terminal device always performs blind detection on a Physical Downlink Control Channel (PDCCH), power consumption of the terminal device may be excessive.
In order to solve the above problem, in long Term Evolution (L ong Term Evolution, L TE), a concept of Discontinuous Reception (DRX) is proposed.
More specifically, the network device configures a DRX cycle (cycle) for the terminal device in a Radio Resource Control (RRC _ CONNECTED) state.
The DRX cycle consists of an active period (On Duration) and a dormant period (Opportunity for DRX), and the terminal equipment monitors and receives the PDCCH within the On Duration; during Opportunity for DRX time, the terminal device does not receive the PDCCH to reduce power consumption.
However, when the unlicensed band is used for DRX operation, there is a possibility that the time of On Duration may be affected by the network side listening first and then transmitting (L isten Before Talk, L BT).
For example, if the network fails to send PDCCH due to L BT failure within an On Duration time, the UE cannot start a DRX deactivation timer (DRX-inactivity timer), so that the On Duration ends when the DRX-inactivity timer (DRX-On Duration timer) fails, however, if there is no L BT impact, the network normally sends PDCCH, the UE receives PDCCH and can start DRX-inactivity timer, so that the On Duration time is prolonged along with the start of DRX-On Duration timer.
Disclosure of Invention
The method can enable the terminal equipment working under the unauthorized frequency band to dynamically adjust the On Duration of the DRX along with the monitoring condition of the PDCCH, and further improve the user experience.
In a first aspect, a method for managing a timer is provided, which is applied to a terminal device operating in an unlicensed frequency band, where the terminal device is configured with a Discontinuous Reception (DRX) cycle and a first timer;
the method comprises the following steps:
the terminal equipment starts the first timer at the starting time of a first active period of the DRX period;
the terminal device re-determines the duration of the first timer when the Physical Downlink Control Channel (PDCCH) is not monitored on the carrier wave of the unlicensed frequency band between the starting time of the first activation period and the failure time of the first timer;
and the terminal equipment restarts the first timer at the starting time of a second activation period adjacent to the first activation period.
In the embodiment of the application, the terminal device working under the unlicensed frequency band dynamically adjusts the duration of the first timer based on the monitoring condition of the PDCCH, and further adjusts the duration of the activation period of the DRX, so that the influence of L BT on the DRX can be reduced, and the user experience is improved.
In some possible implementations, the re-determining the duration of the first timer includes:
the terminal equipment determines a bias duration;
and the terminal equipment determines the sum of the first time length and the offset time length as the time length of the first timer, wherein the first time length is the time length from the starting time of the first activation period to the failure time of the first timer.
In some possible implementations, the offset duration is a duration configured for the terminal device by the network device.
In some possible implementations, the method further includes:
and when the terminal equipment monitors the PDCCH in the second activation period, resetting the duration of the first timer to the initial configuration duration configured by the network equipment.
In some possible implementations, the method further includes:
the terminal device re-determines the duration of the first timer when the PDCCH is not monitored on the carrier wave of the unauthorized frequency band between the starting time of the second activation period and the failure time of the first timer;
and the terminal equipment restarts the first timer at the starting time of a third activation period which is adjacent to the second activation period.
In some possible implementations, a duration of the first timer is less than or equal to a maximum time length configured by the network device.
In some possible implementations, the first timer is any one of the following timers:
a DRX-active period timer, a retransmission timer and a DRX-hybrid automatic repeat request, HARQ, round trip time, RTT timer.
In some possible implementations, before the terminal device starts the first timer at the start time of the first activation period, the method further includes:
the terminal equipment determines the starting moment of the first activation period.
In some possible implementations, the determining a starting time of the first activation period includes:
the terminal device determines the starting time of the subframe meeting any one of the following formulas as the starting time of the first active period:
[ (SFN x 10) + a ] modulo (drx-ShortCycle) ═ drx-StartOffset) modulo (drx-ShortCycle) and [ (SFN x 10) + a ] modulo (drx-L ongccycle) ═ drx-StartOffset;
the SFN represents a system frame number, the A represents a subframe number, the DRX-ShortCycle and the DRX-L ongCycle both represent the number of subframes occupied by the DRX period, the modulo represents modulo operation, and the DRX-StartOffset represents the initial subframe number of the DRX period.
In a second aspect, a terminal device is provided, which is applied to a terminal device operating in an unlicensed frequency band, and is configured with a Discontinuous Reception (DRX) cycle and a first timer;
the terminal device comprises a processing unit, wherein the processing unit is used for:
starting the first timer at the starting time of the first active period of the DRX period; re-determining the duration of the first timer when the Physical Downlink Control Channel (PDCCH) is not monitored on the carrier of the unlicensed frequency band between the starting time of the first active period and the failure time of the first timer; restarting the first timer at a start time of a second activation period that is adjacent after the first activation period.
In some possible implementations, the processing unit is specifically configured to:
determining a bias duration; and determining the sum of the first time length and the offset time length as the time length of the first timer, wherein the first time length is the time length from the starting time of the first activation period to the failure time of the first timer.
In some possible implementations, the offset duration is a duration configured for the terminal device by the network device.
In some possible implementations, the processing unit is further configured to:
and resetting the duration of the first timer to the initial configuration duration configured by the network equipment when the PDCCH is monitored in the second activation period.
In some possible implementations, the processing unit is further configured to:
re-determining the duration of the first timer when the PDCCH is not monitored on the carrier of the unlicensed frequency band between the starting time of the second activation period and the failure time of the first timer; restarting the first timer at a start time of a third active period that is adjacent after the second active period.
In some possible implementations, a duration of the first timer is less than or equal to a maximum time length configured by the network device.
In some possible implementations, the first timer is any one of the following timers:
a DRX-active period timer, a retransmission timer and a DRX-hybrid automatic repeat request, HARQ, round trip time, RTT timer.
In some possible implementations, the processing unit is specifically configured to:
before the terminal equipment starts a first timer at the starting time of a first activation period, the starting time of the first activation period is determined.
In some possible implementations, the processing unit is more specifically configured to:
determining a starting time of a subframe satisfying any one of the following formulas as a starting time of the first active period:
[ (SFN x 10) + a ] modulo (drx-ShortCycle) ═ drx-StartOffset) modulo (drx-ShortCycle) and [ (SFN x 10) + a ] modulo (drx-L ongccycle) ═ drx-StartOffset;
the SFN represents a system frame number, the A represents a subframe number, the DRX-ShortCycle and the DRX-L ongCycle both represent the number of subframes occupied by the DRX period, the modulo represents modulo operation, and the DRX-StartOffset represents the initial subframe number of the DRX period.
In a third aspect, a terminal device is provided, which is applied to a terminal device operating in an unlicensed frequency band, where the terminal device is configured with a Discontinuous Reception (DRX) cycle and a first timer;
the terminal device comprises a processor, wherein the processor is used for:
starting the first timer at the starting time of the first active period of the DRX period; re-determining the duration of the first timer when a Physical Downlink Control Channel (PDCCH) is not monitored on the carrier of the unlicensed frequency band between the starting time of the first active period and the failure time of the first timer; restarting the first timer at a start time of a second activation period that is adjacent after the first activation period.
In a fourth aspect, a computer-readable medium is provided for storing a computer program comprising instructions for performing the method embodiments of the first aspect described above.
In a fifth aspect, there is provided a computer chip comprising: an input interface, an output interface, at least one processor, a memory, the processor being configured to execute code in the memory, and when the code is executed, the processor may implement the processes performed by the terminal device in the method for managing a timer in the first aspect.
In a sixth aspect, a communication system is provided, which includes the terminal device and the network device.
Drawings
Fig. 1 is an example of an application scenario of the present invention.
Fig. 2 is a schematic flow chart of a method of managing timers in an embodiment of the invention.
Fig. 3 is a diagram illustrating DRX according to an embodiment of the present invention.
Fig. 4 is a schematic block diagram of a terminal device of an embodiment of the present invention.
Fig. 5 is a schematic block diagram of another terminal device of an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic diagram of an application scenario of an embodiment of the present invention.
As shown in fig. 1, communication system 100 may include a terminal device 110 and a network device 120. Network device 120 may communicate with terminal device 110 over the air. Multi-service transport is supported between terminal device 110 and network device 120.
However, packet-based data streams are typically bursty. In other words, the terminal device 100 has data transmitted for a certain period of time, but has no data transmitted for the next longer period of time. Thus, if the terminal device 100 always performs blind detection on a Physical Downlink Control Channel (PDCCH), power consumption of the terminal device may be excessive.
Although, in the long Term Evolution (L ong Term Evolution, L TE), the concept of Discontinuous Reception (DRX) is proposed, specifically, the main idea of DRX is that the network can configure the terminal to wake up (DRX ON) at a time predicted by the network and the terminal monitors the downlink control channel, and at the same time, the network can also configure the terminal to sleep (DRX OFF) at a time predicted by the network, i.e., the terminal does not need to monitor the downlink control channel.
However, transmitting data by the terminal device over the unlicensed spectrum requires that some requirements of the unlicensed spectrum specification be met-for example, listen Before transmit (L isten Before Talk, L BT).
Here, listen Before transmit (L, Before Talk, L BT) may be understood as that a terminal device needs to listen to a channel Before transmitting data, and if the detected energy is below a certain threshold, the terminal is considered to be able to transmit data on the channel.
It can be found that, when the unlicensed band is used for DRX operation, it is possible that the time of On Duration may be affected by the network side listening first and then transmitting (L isten Before Talk, L BT).
For example, if the network fails to send PDCCH due to L BT failure within an On Duration time, the UE cannot start a DRX deactivation timer (DRX-inactivity timer), so that the On Duration ends when the DRX-inactivity timer (DRX-On Duration timer) fails, however, if there is no L BT impact, the network normally sends PDCCH, the UE receives PDCCH and can start DRX-inactivity timer, so that the On Duration time is prolonged along with the start of DRX-On Duration timer.
Therefore, the embodiment of the invention provides a method for managing a timer, which can enable a terminal device working under an unauthorized frequency band to dynamically adjust the On Duration of DRX along with the monitoring condition of a PDCCH, thereby improving user experience.
It should be understood that the embodiment of the present invention is only illustrated by the communication System 100, but the embodiment of the present invention is not limited thereto, that is, the technical solution of the embodiment of the present invention can be applied to various communication systems, such as a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a long Term Evolution (L ong Term Evolution, L TE) System, a L TE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), and the like.
Furthermore, various embodiments are described herein in connection with a network device and a terminal device.
For example, the network device 120 may be a user equipment for Machine Type Communication (MTC), a Base Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, an evolved Node B (eNB or eNodeB) in L TE, a Base Station device in a 5G network, and the like.
Specifically, the terminal device 110 may communicate with one or more Core networks (Core networks) via a Radio Access Network (RAN), which may also be referred to as an Access terminal, a User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a Wireless communication device, a User agent, or a User Equipment.
FIG. 2 is a schematic flow diagram of managing timers in an embodiment of the invention.
Specifically, as shown in fig. 2, the method includes:
210, the terminal device starts the first timer at the beginning of the first active period of the DRX cycle.
220, the terminal device re-determines the duration of the first timer when the PDCCH is not detected on the carrier of the unlicensed frequency band between the start time of the first active period and the expiration time of the first timer.
The terminal device restarts the first timer at the start time of an adjacent second active period after the first active period 230.
Specifically, before the terminal device starts the first timer at the start time of the first activation period, the terminal device determines the start time of the first activation period. Furthermore, the terminal device starts the first timer at the starting time of the first active period, and monitors the PDCCH on the carrier of the unlicensed frequency band between the starting time of the first active period and the failure time of the first timer. If the terminal device does not sense the PDCCH on the carrier of the unlicensed frequency band between the starting time of the first active period and the expiration time of the first timer, the terminal device re-determines the duration of the first timer, and re-starts the first timer at the starting time of a second active period adjacent to the first active period.
Therefore, the terminal equipment working under the unlicensed frequency band dynamically adjusts the duration of the first timer based on the monitoring condition of the PDCCH, further adjusts the duration of the activation period of the DRX, can reduce the influence of L BT on the DRX, and improves the user experience.
More specifically, the terminal device determines the starting time of the subframe satisfying any one of the following formulas as the starting time of the first active period:
[ (SFN × 10) + a ] modulo (drx-Short Cycle) ═ drx-StartOffset) modulo (drx-Short Cycle) and [ (SFN × 10) + a ] modulo (drx-L ongCycle) ═ drx-StartOffset;
wherein the SFN represents the system frame number, the a represents the subframe number, the DRX-ShortCycle and the DRX-L ongCycle both represent the number of subframes occupied by the DRX cycle, the modulo represents the modulo operation, and the DRX-StartOffset represents the starting subframe number of the DRX cycle.
It should be understood that the method for managing a timer provided in the embodiment of the present application may be applied to a terminal device operating in an unlicensed frequency band, where the terminal device is configured with a DRX cycle and a first timer.
It should be noted that the first active period in the embodiment of the present invention may refer to any active period of the DRX cycle.
Specifically, a Media Access Control (MAC) entity (entity) configures a DRX function by a Radio Resource Control (RRC) for controlling a behavior of a terminal monitoring a PDCCH.
For example, as shown in fig. 3, the DRX cycle configured by the network device for the terminal device is composed of an active period (On Duration) and a dormant period (Opportunity for DRX), and in an RRC CONNECTED (RRC CONNECTED) mode, if the terminal device configures a DRX function, the MAC entry may be within the On Duration, and the terminal device monitors and receives the PDCCH; during Opportunity for DRX time, the terminal device does not receive the PDCCH to reduce power consumption.
In the embodiment of the present invention, the terminal device in the dormant period may receive data from other physical channels, but does not receive the PDCCH. For example, the terminal device may receive a Physical Downlink Shared Channel (PDSCH), an acknowledgement/non-acknowledgement (ACK/NACK), and the like. For another example, in Semi-Persistent Scheduling (SPS), the terminal device may receive PDSCH data configured periodically.
It should also be understood that the first timer includes, but is not limited to, any of the following timers:
a DRX-active period timer, a retransmission timer and a DRX-hybrid automatic repeat request, HARQ, round trip time, RTT timer.
The following describes an implementation manner of the terminal device to re-determine the duration of the first timer:
in one embodiment, the terminal device determines an offset duration; the terminal device may determine a sum of the first duration and the offset duration as a duration of the first timer, where the first duration is a duration between a start time of the first active period and a time of failure of the first timer.
Specifically, when the terminal device configures DRX and operates in an unlicensed frequency band, if the PDCCH is not monitored during the current on duration, the on duration is increased by a configured offset (offset) duration until the PDCCH is monitored during the on duration when the next on duration is started.
In other words, if the terminal device does not monitor the PDCCH, the terminal enters a DRX off (off) phase (i.e., stops monitoring the PDCCH) while adding a configured offset duration to the first timer currently configured.
Further, the offset duration may be a duration configured for the terminal device by the network device.
In this embodiment of the application, the terminal device may further determine, according to the monitoring result of the PDCCH in the second active period, a duration of the first timer in a third active period, which is adjacent to the second active period, of the terminal device.
For example, when the terminal device detects the PDCCH in the second active period, the duration of the first timer may be reset to the initial configuration duration configured by the network device.
Specifically, if the terminal device monitors the PDCCH during the on duration, the duration of the first timer is reset to the duration configured for the terminal device by the network device, that is, the terminal removes all offsets (offsets) superimposed on the first timer.
For another example, the terminal device may re-determine the duration of the first timer when the PDCCH is not detected on the carrier of the unlicensed frequency band between the start time of the second active period and the expiration time of the first timer; the terminal equipment restarts the first timer at the starting time of a third activation period adjacent to the second activation period.
In the embodiment of the present application, the duration of the first timer is prevented from being too long.
Optionally, the duration of the first timer may be smaller than or equal to the maximum time length configured by the network device. In other words, the duration of the first timer plus the total length of possible offsets (offsets) cannot be greater than the length of time a network device configures for the terminal device.
Fig. 4 is a schematic block diagram of a terminal device of an embodiment of the present invention. It should be understood that the terminal device is applied to operate in an unlicensed frequency band and configured with a DRX cycle and a first timer;
specifically, as shown in fig. 4, the terminal apparatus 400 includes:
the terminal device comprises a processing unit 410, the processing unit 410 being configured to:
starting the first timer at the starting time of the first active period of the DRX period; re-determining the duration of the first timer when the Physical Downlink Control Channel (PDCCH) is not monitored on the carrier of the unlicensed frequency band between the starting time of the first active period and the failure time of the first timer; the first timer is restarted at a start time of a second activation period that is adjacent after the first activation period.
Optionally, the processing unit 410 is specifically configured to:
determining a bias duration; and determining the sum of the first time length and the offset time length as the time length of the first timer, wherein the first time length is the time length from the starting time of the first activation period to the failure time of the first timer.
Optionally, the offset duration is a duration configured for the terminal device by the network device.
Optionally, the processing unit 410 is further configured to:
and resetting the duration of the first timer to the initial configuration duration configured by the network equipment when the PDCCH is monitored in the second activation period.
Optionally, the processing unit 410 is further configured to:
re-determining the duration of the first timer when the PDCCH is not monitored on the carrier of the unlicensed frequency band between the starting time of the second activation period and the failure time of the first timer; the first timer is restarted at a start time of a third activation period that is adjacent after the second activation period.
Optionally, the duration of the first timer is less than or equal to the maximum time length configured by the network device.
Optionally, the first timer is any one of the following timers:
a DRX-active period timer, a retransmission timer and a DRX-hybrid automatic repeat request, HARQ, round trip time, RTT timer.
Optionally, the processing unit 410 is specifically configured to:
before the terminal equipment starts a first timer at the starting time of the first activation period, the starting time of the first activation period is determined.
Optionally, the processing unit 410 is more specifically configured to:
determining the starting time of the subframe satisfying any one of the following formulas as the starting time of the first active period:
[ (SFN × 10) + a ] modulo (drx-Short Cycle) ═ drx-StartOffset) modulo (drx-Short Cycle) and [ (SFN × 10) + a ] modulo (drx-L ongCycle) ═ drx-StartOffset;
wherein the SFN represents the system frame number, the a represents the subframe number, the DRX-ShortCycle and the DRX-L ongCycle both represent the number of subframes occupied by the DRX cycle, the modulo represents the modulo operation, and the DRX-StartOffset represents the starting subframe number of the DRX cycle.
It should be noted that the processing unit 410 described above may be implemented by a processor. As shown in fig. 5, terminal device 500 may include a processor 510, a transceiver 520, and a memory 530. Memory 530 may be used to store information and may also be used to store code, instructions, etc. that are executed by processor 510. The individual components in the terminal device 500 are connected via a bus system, which comprises, in addition to a data bus, a power bus, a control bus and a status signal bus.
The terminal device 500 shown in fig. 5 can implement the foregoing processes implemented by the terminal device in the embodiment of the method in fig. 2, and details are not repeated here to avoid repetition.
It should be understood that the method embodiments in the embodiments of the present invention may be applied to or implemented by a processor.
In implementation, the steps of the method embodiments of the present invention may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. More specifically, the steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in ram, flash memory, rom, prom, or eprom, registers, among other storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
The processor may be an integrated circuit chip having signal processing capability, and may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present invention. For example, the processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a transistor logic device, a discrete hardware component, and so on. Further, a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In addition, in embodiments of the present invention, the memory may be either volatile memory or non-volatile memory, or may include both volatile and non-volatile memory, wherein the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory the volatile memory may be Random Access Memory (RAM), which serves as an external cache memory.
Finally, it is noted that the terminology used in the embodiments of the present invention and the appended claims is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the present invention.
For example, as used in the examples of the invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Also for example, the word "at … …" as used herein may be interpreted as "if" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the elements may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
If implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method described in the embodiments of the present invention. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.
The above description is only a specific implementation of the embodiments of the present invention, but the scope of the embodiments of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present invention, and all such changes or substitutions should be covered by the scope of the embodiments of the present invention. Therefore, the protection scope of the embodiments of the present invention shall be subject to the protection scope of the claims.

Claims (18)

  1. A method for managing a timer is characterized in that the method is applied to a terminal device working in an unauthorized frequency band, and the terminal device is configured with a Discontinuous Reception (DRX) cycle and a first timer;
    the method comprises the following steps:
    the terminal equipment starts the first timer at the starting time of a first active period of the DRX period;
    the terminal device re-determines the duration of the first timer when the Physical Downlink Control Channel (PDCCH) is not monitored on the carrier wave of the unlicensed frequency band between the starting time of the first activation period and the failure time of the first timer;
    and the terminal equipment restarts the first timer at the starting time of a second activation period adjacent to the first activation period.
  2. The method of claim 1, wherein said re-determining the duration of the first timer comprises:
    the terminal equipment determines a bias duration;
    and the terminal equipment determines the sum of the first time length and the offset time length as the time length of the first timer, wherein the first time length is the time length from the starting time of the first activation period to the failure time of the first timer.
  3. The method of claim 2, wherein the offset duration is a duration configured for the terminal device by a network device.
  4. The method according to any one of claims 1 to 3, further comprising:
    and when the terminal equipment monitors the PDCCH in the second activation period, resetting the duration of the first timer to the initial configuration duration configured by the network equipment.
  5. The method according to any one of claims 1 to 3, further comprising:
    the terminal device re-determines the duration of the first timer when the PDCCH is not monitored on the carrier wave of the unauthorized frequency band between the starting time of the second activation period and the failure time of the first timer;
    and the terminal equipment restarts the first timer at the starting time of a third activation period which is adjacent to the second activation period.
  6. The method according to any of claims 1 to 5, wherein the duration of the first timer is less than or equal to a maximum time duration configured for a network device.
  7. The method according to any one of claims 1 to 6, wherein the first timer is any one of the following timers:
    a DRX-active period timer, a retransmission timer and a DRX-hybrid automatic repeat request, HARQ, round trip time, RTT timer.
  8. The method according to any of claims 1 to 7, wherein before the terminal device starts the first timer at the start time of the first activation period, the method further comprises:
    the terminal equipment determines the starting moment of the first activation period.
  9. The method of claim 8, wherein the determining a starting time of the first activation period comprises:
    the terminal device determines the starting time of the subframe meeting any one of the following formulas as the starting time of the first active period:
    [ (SFN x 10) + a ] modulo (drx-ShortCycle) ═ drx-StartOffset) modulo (drx-ShortCycle) and [ (SFN x 10) + a ] modulo (drx-L ongccycle) ═ drx-StartOffset;
    the SFN represents a system frame number, the A represents a subframe number, the DRX-ShortCycle and the DRX-L ongCycle both represent the number of subframes occupied by the DRX period, the modulo represents modulo operation, and the DRX-StartOffset represents the initial subframe number of the DRX period.
  10. The terminal equipment is characterized by being applied to the terminal equipment working in an unauthorized frequency band, and being configured with a Discontinuous Reception (DRX) cycle and a first timer;
    the terminal device comprises a processing unit, wherein the processing unit is used for:
    starting the first timer at the starting time of the first active period of the DRX period; re-determining the duration of the first timer when the Physical Downlink Control Channel (PDCCH) is not monitored on the carrier of the unlicensed frequency band between the starting time of the first active period and the failure time of the first timer; restarting the first timer at a start time of a second activation period that is adjacent after the first activation period.
  11. The terminal device of claim 10, wherein the processing unit is specifically configured to:
    determining a bias duration; and determining the sum of the first time length and the offset time length as the time length of the first timer, wherein the first time length is the time length from the starting time of the first activation period to the failure time of the first timer.
  12. The terminal device of claim 11, wherein the offset duration is a duration configured for the terminal device by a network device.
  13. The terminal device of any of claims 10-12, wherein the processing unit is further configured to:
    and resetting the duration of the first timer to the initial configuration duration configured by the network equipment when the PDCCH is monitored in the second activation period.
  14. The terminal device of any of claims 10-12, wherein the processing unit is further configured to:
    re-determining the duration of the first timer when the PDCCH is not monitored on the carrier of the unlicensed frequency band between the starting time of the second activation period and the failure time of the first timer; restarting the first timer at a start time of a third active period that is adjacent after the second active period.
  15. The terminal device according to any of claims 10 to 14, wherein the duration of the first timer is less than or equal to a maximum time duration configured by the network device.
  16. The terminal device according to any of claims 10 to 15, wherein the first timer is any of the following timers:
    a DRX-active period timer, a retransmission timer and a DRX-hybrid automatic repeat request, HARQ, round trip time, RTT timer.
  17. The terminal device according to any one of claims 10 to 16, wherein the processing unit is specifically configured to:
    before the terminal equipment starts a first timer at the starting time of a first activation period, the starting time of the first activation period is determined.
  18. The terminal device of claim 17, wherein the processing unit is further configured to:
    determining a starting time of a subframe satisfying any one of the following formulas as a starting time of the first active period:
    [ (SFN x 10) + a ] modulo (drx-ShortCycle) ═ drx-StartOffset) modulo (drx-ShortCycle) and [ (SFN x 10) + a ] modulo (drx-L ongccycle) ═ drx-StartOffset;
    the SFN represents a system frame number, the A represents a subframe number, the DRX-ShortCycle and the DRX-L ongCycle both represent the number of subframes occupied by the DRX period, the modulo represents modulo operation, and the DRX-StartOffset represents the initial subframe number of the DRX period.
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