A method and apparatus for controlling a secondary cell deactivation timer

Abstract

A method and apparatus for controlling a deactivation timer of at least one secondary cell (SCell) in a wireless communication system are provided. A method for controlling a deactivation timer of at least one SCell of a user equipment includes receiving a control indication from a network node through a physical downlink control channel (PDCCH) and controlling the deactivation timer of the at least one SCell according to the control indication, wherein the control indication indicates the control of the deactivation timer of the at least one SCell.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication systems, and in particular to a method and apparatus for controlling a deactivation timer of at least one secondary cell (SCell) in a wireless communication system. BACKGROUND

[0002] If a medium access control (MAC) entity is configured with one or more secondary cells (SCells), the network can activate and deactivate one or more configured SCells. The network activates and deactivates one or more configured SCells by sending an activation / deactivation MAC control element (CE). In addition, the MAC entity maintains a deactivation timer for each configured SCell (except for SCells configured with a physical uplink control channel (PUCCH), if any) and deactivates the associated SCell upon expiry of the deactivation timer.

[0003] In a new radio (NR) system, the technical specification group radio access network working group 2 (TSG-RAN WG2) of one of the working groups of the third generation partnership project (3GPP) agreed to use a MAC CE to activate or deactivate an SCell at the RAN2#99bis meeting, which is the baseline of a long term evolution (LTE) system.

[0004] There is a need to provide a new technical solution for controlling a deactivation timer of at least one SCell in a wireless communication system. SUMMARY

[0005] The purpose of the present disclosure is to provide a method and apparatus for controlling a deactivation timer of at least one secondary cell in a wireless communication system.

[0006] In a first aspect of the present disclosure, a user equipment for controlling a deactivation timer of at least one secondary cell in a wireless communication system includes a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to control the transceiver to receive a control indication from a network node through a PDCCH, and control the deactivation timer of the at least one SCell according to the control indication, wherein the control indication indicates the control of the deactivation timer of the at least one SCell.

[0007] In a second aspect of the present disclosure, a method for controlling a deactivation timer of at least one SCell of a user equipment comprises receiving a control indication from a network node through a PDCCH, and controlling the deactivation timer of the at least one SCell according to the control indication, wherein the control indication indicates the control of the deactivation timer of the at least one SCell.

[0008] In a third aspect of the present disclosure, a network node for controlling a deactivation timer of at least one SCell in a wireless communication system comprises a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to control the transceiver to notify a control indication to a user equipment through a PDCCH, and control the deactivation timer of the at least one SCell according to the control indication, wherein the control indication indicates the control of the deactivation timer of the at least one SCell.

[0009] In a fourth aspect of the present disclosure, a method for controlling a deactivation timer of at least one SCell of a network node comprises notifying a control indication to a user equipment through a PDCCH, and controlling the deactivation timer of the at least one SCell according to the control indication, wherein the control indication indicates the control of the deactivation timer of the at least one SCell.

[0010] In a fifth aspect of the present disclosure, a non-transitory machine-readable storage medium has instructions stored thereon, which when executed by a computer, cause the computer to perform the above method.

[0011] In a sixth aspect of the present disclosure, a terminal device comprises a processor and a memory configured to store a computer program. The processor is configured to execute the computer program stored in the memory to perform the above method.

[0012] In a seventh aspect of the present disclosure, a network node comprises a processor and a memory configured to store a computer program. The processor is configured to execute the computer program stored in the memory to perform the above method. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the embodiments or related technologies of the present disclosure, the following drawings described in the embodiments will be briefly introduced. Obviously, these drawings are only some of the embodiments of the present disclosure, and those skilled in the art can obtain other drawings from these drawings without undue creative effort.

[0014] Figure 1 is a block diagram of a user equipment and a network node for controlling a deactivation timer of at least one SCell in a wireless communication system according to an embodiment of the present disclosure.

[0015] Figure 2 is a flowchart illustrating a method for controlling a deactivation timer of at least one SCell of a user equipment according to an embodiment of the disclosure.

[0016] Figure 3 is a flowchart illustrating a method for controlling a deactivation timer of at least one SCell of a network node according to an embodiment of the disclosure.

[0017] Figure 4 is a schematic diagram illustrating a control of a deactivation timer of at least one SCell between a user equipment and a network node according to an embodiment of the disclosure.

[0018] Figure 5 is a schematic diagram of a method for activation of a deactivation timer of at least one SCell between a user equipment and a network node according to an embodiment of the disclosure.

[0019] Figure 6 is a schematic diagram of a method for activation of a deactivation timer of at least one SCell between a user equipment and a network node according to another embodiment of the disclosure.

[0020] Figure 7 is a schematic diagram of a method for deactivation of a deactivation timer of at least one SCell between a user equipment and a network according to an embodiment of the disclosure.

[0021] Figure 8 is a schematic diagram of a method for deactivation of a deactivation timer of at least one SCell between a user equipment and a network according to another embodiment of the disclosure.

[0022] Figure 9 is a block diagram of a system for wireless communication according to an embodiment of the disclosure. DETAILED DESCRIPTION

[0023] Embodiments of the disclosure will be described below with reference to technical subjects, structural features, purposes and effects of implementation, with reference to the accompanying drawings. Specifically, the terms in the embodiments of the disclosure are only for the purpose of describing specific embodiments and do not limit the disclosure.

[0024] Figure 1It is shown that in some embodiments, a user equipment 10 and a network node 20 control a deactivation timer for at least one secondary cell (SCell) in a wireless communication system according to embodiments of the present disclosure. The UE 10 can include a processor 11, a memory 12, and a transceiver 13. The network node 20 can include a processor 21, a memory 22, and a transceiver 23. The processor 11 or 21 can be configured to implement proposed functions, procedures, and / or methods described in this detailed description. Various layers of radio interface protocol can be implemented in the processor 11 or 21. The memory 12 or 22 is operatively coupled with the processor 11 or 21 and stores information related to operations of the processor 11 or 21. The transceiver 13 or 23 is operatively coupled with the processor 11 or 21 and transmits and / or receives radio signals.

[0025] The processor 11 or 21 can include application-specific integrated circuit (ASIC), other chip sets, logic circuit, and / or a data processing device. The memory 12 or 22 can include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium and / or other storage devices. The transceiver 13 or 23 can include a baseband circuit to process radio frequency signals. When the embodiments are implemented in software, the techniques described herein can be implemented by modules (for example, procedures, functions, and so on) that perform the functions described herein. These modules can be stored on the memory 12 or 22 and executed by the processor 11 or 21. The memory 12 or 22 can be implemented within, or external to, the processor 11 or 21, in which case it can be communicatively coupled to the processor 11 or 21 via various means as is known in the art.

[0026] According to the sidelink technology developed in the third generation partnership project (3GPP) new radio (NR) release 16 and beyond, the communication between UEs involves vehicle-to-everything (V2X) communication, which includes vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), and vehicle-to-infrastructure / network (V2I / N). UEs directly communicate with each other through a sidelink interface such as a PC5 interface.

[0027] In some embodiments, the processor 11 is configured to control the transceiver 13 to receive a control indication from the network node 20 over the PDCCH, and to control the deactivation timer of the at least one SCell in accordance with the control indication, wherein the control indication indicates the control of the deactivation timer of the at least one SCell.

[0028] In some embodiments, the processor 21 is configured to control the transceiver 23 to inform a control indication to the user equipment 10 over the PDCCH, and to control the deactivation timer of the at least one SCell in accordance with the control indication, wherein the control indication indicates the control of the deactivation timer of the at least one SCell.

[0029] Figure 2 A method 200 for controlling the deactivation timer of the at least one SCell of the user equipment 10 according to embodiments of the present disclosure is shown. The method 200 comprises: receiving a control indication from the network node 20 over the PDCCH at block 202, and controlling the deactivation timer of the at least one SCell in accordance with the control indication at block 204, wherein the control indication indicates the control of the deactivation timer of the at least one SCell.

[0030] Figure 3 A method 300 for controlling the deactivation timer of the at least one SCell of the network node 20 according to embodiments of the present disclosure is shown. The method 300 comprises: informing a control indication to the user equipment 10 over the PDCCH at block 302, and controlling the deactivation timer of the at least one SCell in accordance with the control indication at block 304, wherein the control indication indicates the control of the deactivation timer of the at least one SCell.

[0031] Figure 4It is shown that in some embodiments, control of deactivation timers of at least one SCell 30 between a user equipment 10 and a network node 20 is provided according to embodiments of the present disclosure. The user equipment 10 can communicate with multiple cells managed by the network node 20, and can work on different frequencies. In order to increase transmission bandwidth, one user can be served by multiple cells, and these cells can be covered by the network node 20. These cells include a primary cell (PCell) 40 and at least one SCell 30. The PCell 40 can be a serving cell, and can be in an active state. The PCell 40 can be switched through a handover procedure. The user equipment 10 sends and receives non-access stratum (NAS) information in the PCell 40, and sends a physical uplink control channel (PUCCH) in the PCell 40.

[0032] In some embodiments, the control indication includes an activation indication and / or a deactivation indication. The PDCCH carries downlink control information (DCI) including the control indication.

[0033] The transceiver 13 is configured to receive information indicating configuration of at least one SCell from the network node 20. The processor 11 is configured to identify an activated SCell and / or a serving cell according to the information indicating configuration of at least one SCell from the network node 20.

[0034] In some embodiments, the transceiver 23 is configured to inform the user equipment 10 of information indicating configuration of at least one SCell. The processor 21 is configured to identify an activated SCell and / or a serving cell according to the information indicating configuration of at least one SCell.

[0035] In some embodiments, the user equipment 10 is configured to receive information indicating configuration of at least one SCell 30, such as an activated SCell and / or a serving cell, from the network node 20, receive an activation / deactivation indication from the network node 20 through a PDCCH, wherein the activation / deactivation indication indicates activation / deactivation of a deactivation timer of the at least one SCell 30, and activate / deactivate the deactivation timer of the at least one SCell 30 according to the activation / deactivation indication.

[0036] In some embodiments, the network node 20 is configured to inform the user equipment 10 of information indicating a configuration of at least one SCell 30, e.g. activated SCells and / or serving cells, to inform the user equipment 10 of an activation / deactivation indication by a PDCCH, wherein the activation / deactivation indication indicates an activation / deactivation of a deactivation timer of the at least one SCell 30, and the network node 20 is configured to activate / deactivate the deactivation timer of the at least one SCell 30 according to the activation / deactivation indication.

[0037] Figure 1 and Figure 4 It is shown that in some embodiments the processor 11 or 21 is configured to control the deactivation timer of the at least one SCell 30 according to the DCI comprising the control indication.

[0038] Figure 1 and Figure 5 It is shown that in some embodiments an activation method 400 for a deactivation timer of at least one SCell between the user equipment 10 and the network node 20, the activation method 400 comprising: at block 402, the transceiver 13 of the user equipment 10 receiving an activation indication from the network node 20 by a PDCCH on an activated SCell, the activation indication indicating an activation of a deactivation timer of the at least one SCell, and at block 404, the processor 11 of the user equipment 10 restarting the deactivation timer of the at least one SCell according to the activation indication. In other words, at block 402, the transceiver 23 of the network node 20 informing the user equipment 10 of an activation indication by a PDCCH on an activated SCell, the activation indication indicating an activation of a deactivation timer of the at least one SCell, and at block 404, the processor 21 of the network node 20 restarting the deactivation timer of the at least one SCell according to the activation indication. In some embodiments, the processor 11 or 21 is configured to restart the deactivation timer of the at least one SCell according to the DCI comprising the activation indication.

[0039] Figure 1 and Figure 6An activation method 500 for a deactivation timer of at least one SCell between the user equipment 10 and the network node 20 is shown in some embodiments, the activation method 500 comprising: at block 502, the transceiver 13 of the user equipment 10 receiving an activation indication from the network node 20 over a PDCCH on a serving cell, the activation indication indicating activation of a deactivation timer of at least one SCell, and at block 504, the processor 11 of the user equipment 10 starting or restarting the deactivation timer of the at least one SCell in accordance with the activation indication. In other words, at block 502, the transceiver 23 of the network node 20 notifies the user equipment 10 of an activation indication over a PDCCH on a serving cell, the activation indication indicating activation of a deactivation timer of at least one SCell, and at block 504, the processor 21 of the network node 20 starts or restarts the deactivation timer of the at least one SCell in accordance with the activation indication. In some embodiments, the processor 11 or 21 is configured to start or restart the deactivation timer of the at least one SCell in accordance with a DCI comprising the activation indication.

[0040] Figure 1 and Figure 7 A deactivation method 600 for a deactivation timer of at least one SCell between the user equipment 10 and the network node 20 is shown in some embodiments, the deactivation method 600 comprising: at block 602, the transceiver 13 of the user equipment 10 receiving a deactivation indication from the network node 20 over a PDCCH on an activated SCell, the deactivation indication indicating deactivation of a deactivation timer of at least one SCell, and at block 604, the processor 11 of the user equipment 10 stopping the deactivation timer of the at least one SCell in accordance with the deactivation indication. In other words, at block 602, the transceiver 23 of the network node 20 notifies the user equipment 10 of a deactivation indication over a PDCCH on an activated SCell, the deactivation indication indicating deactivation of a deactivation timer of at least one SCell, and at block 604, the processor 21 of the network node 20 stops the deactivation timer of the at least one SCell in accordance with the deactivation indication. In some embodiments, the processor 11 or 21 is configured to stop the deactivation timer of the at least one SCell in accordance with a DCI comprising the deactivation indication.

[0041] Figure 1 and Figure 8An activation method 800 for an activation timer of at least one SCell between a user equipment 10 and a network node 20 is shown in some embodiments, the activation method 800 comprising: at block 802, the transceiver 13 of the user equipment 10 receiving an activation indication from the network node 20 over a PDCCH on a serving cell, the activation indication indicating an activation of an activation timer of at least one SCell, and at block 804, the processor 11 of the user equipment 10 starting the activation timer of the at least one SCell according to the activation indication. In other words, at block 802, the transceiver 23 of the network node 20 notifies the user equipment 10 of an activation indication over a PDCCH on a serving cell, the activation indication indicating an activation of an activation timer of at least one SCell, and at block 804, the processor 21 of the network node 20 starts the activation timer of the at least one SCell according to the activation indication. In some embodiments, the processor 11 or 21 is configured to start the activation timer of the at least one SCell according to a DCI comprising the activation indication.

[0042] Figure 9 is a block diagram of an example system 700 for wireless communication, in accordance with embodiments of the present disclosure. Embodiments described herein can be implemented into a system using any suitably configured hardware and / or software. Figure 9 The system 700 is shown to include radio frequency (RF) circuitry 710, a baseband circuitry 720, an application circuitry 730, a memory / storage 740, a display 750, a camera 760, a sensor 770, and an input / output (I / O) interface 780 coupled with each other by one or more buses 791.

[0043] The application circuitry 730 can include circuitry such as, but not limited to, one or more single-core or multi-core processors. The processor(s) can include any combination of general-purpose processors and dedicated processors (e.g., graphics processors, application processors). The processors can be coupled with memory / storage and the processors are configured to execute instructions stored in the memory / storage to enable various applications and / or operating systems to run on the system.

[0044] The baseband circuitry 720 can include circuitry such as, but not limited to, one or more single-core or multi-core processors. The processors can include a baseband processor. The baseband circuitry can handle various radio control functions that enable communication with one or more radio networks. The radio control functions can include, but are not limited to, signal modulation, encoding, decoding, radio frequency shifting, etc. In some embodiments, the baseband circuitry can provide communication compatibility with one or more radio technologies. For example, in some embodiments, the baseband circuitry can support communication with evolved universal terrestrial radio access network (EUTRAN) and / or other wireless metropolitan area networks (WMAN), wireless local area networks (WLANs), and wireless personal area networks (WPANs). Embodiments in which the baseband circuitry is configured to support radio communications of more than one wireless protocol can be referred to as multi-mode baseband circuitry.

[0045] In various embodiments, the baseband circuitry 720 can include circuitry not strictly considered a baseband processor that operates on signals not strictly considered baseband signals. For example, in some embodiments, the baseband circuitry can include circuitry that operates on signals that have a frequency that is not strictly considered a baseband frequency. For example, in some embodiments, the baseband circuitry can include circuitry that operates on signals at a medium frequency, the medium frequency being between a baseband frequency and a radio frequency.

[0046] The RF circuitry 710 can enable communication with wireless networks through

[0047] In various embodiments, the RF circuitry 710 can include circuitry not strictly considered a radio that operates on signals not strictly considered radio frequency signals. For example, in some embodiments, the RF circuitry can include circuitry that operates on signals at a medium frequency, the medium frequency being between a baseband frequency and a radio frequency.

[0048] In various embodiments, the transmitter circuitry, control circuitry, or receiver circuitry discussed above with respect to a user equipment, eNB, or gNB can be embodied in whole or in part in one or more of the RF circuitry, the baseband circuitry, and / or the application circuitry. As used herein, a "circuit" can refer to an ASIC, an electronic circuit, a processor (shared, dedicated, or group) and / or memory (shared, dedicated, or group) that execute one or more software or firmware programs, a combinational logic circuit, and / or other suitable hardware components that provide the described functionality and / or are part of the described functionality. In some embodiments, the electronic device circuitry can be implemented in one or more software or firmware modules.

[0049] In some embodiments, some or all of the constituent parts of the baseband circuitry, application circuitry, and / or memory / storage can be implemented together on a system on a chip (SOC).

[0050] The memory / storage 740 can be used to load and store data and / or instructions for use by one or more components of the system. The memory / storage 740 of an embodiment can include any combination of suitable volatile memory (e.g., dynamic random access memory (DRAM)) and / or non-volatile memory (e.g., flash memory).

[0051] In various embodiments, the I / O interface 780 can include one or more user interfaces designed to enable user interaction with the system and / or peripheral component interfaces designed to enable interaction with peripheral components of the system. User interfaces can include, but are not limited to, physical keyboards or keypads, touch pads, speakers, microphones, etc. Peripheral component interfaces can include, but are not limited to, non-volatile memory port, a universal serial bus (USB) port, an audio jack, and a power supply interface.

[0052] In various embodiments, the sensors 770 can include one or more sensing devices to determine environmental conditions and / or location information related to the system. In some embodiments, the sensors can include, but are not limited to, a gyroscope sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit. The positioning unit can also be part of, or interact with, the baseband circuitry and / or RF circuitry to communicate with components of a positioning network (e.g., global positioning system (GPS) satellites).

[0053] In various embodiments, the display 750 can include displays such as liquid crystal displays and touch screen displays. In various embodiments, the system 700 can be a mobile computing device such as, but not limited to, a laptop computing device, a tablet computing device, a netbook, an ultrabook, a smartphone, etc. In various embodiments, the system can have more or less components, and / or different architectures. Where appropriate, the methods described herein can be implemented as a computer program. The computer program can be stored on a storage medium such as a non-transitory storage medium.

[0054] In embodiments of the present disclosure, a method and apparatus for controlling a deactivation timer of at least one SCell in a wireless communication system are provided. Embodiments of the present disclosure are combinations of techniques / processes that can be employed in 3GPP specifications to create end products.

[0055] Those of ordinary skill in the art understand that each of the units, algorithms, and steps described and disclosed in the embodiments of the present disclosure are implemented using electronic hardware or a combination of software and electronic hardware for computers. Whether these functions are implemented in hardware or software depends on the application conditions and design requirements of the technical solutions.

[0056] Those of ordinary skill in the art can use different ways to implement the functions of each specific application, and such implementation should not exceed the scope of the present disclosure. Those of ordinary skill in the art should understand that, since the working processes of the systems, devices, and units in the above-described embodiments are basically the same, he / she can refer to the working processes of the systems, devices, and units in the above-described embodiments. In order to facilitate description and simplify, these working processes will not be described in detail.

[0057] It should be understood that the systems, devices, and methods disclosed in the embodiments of the present disclosure can be implemented in other ways. The above-described embodiments are only exemplary. The division of units is only based on logical functions, and there are other divisions in implementation. It is possible that multiple units or components can be combined or integrated in another system. It is also possible to omit or skip some features. On the other hand, the mutual coupling, direct coupling, or communication coupling shown or discussed operates indirectly or communicatively through some ports, devices, or units in electrical, mechanical, or other forms.

[0058] The units used for illustration as separate components are physically separate or not separate. The units used for display are physical units or not physical units, i.e. located in one location or distributed on multiple network units. Some or all of the units are used according to the purpose of the embodiments. Moreover, each functional unit in each embodiment can be integrated in one physically independent processing unit, or integrated in one processing unit with two or more units.

[0059] If the software function unit is implemented, used and sold as a product, the software function unit can be stored in a computer readable storage medium of a computer. Based on this understanding, the technical solutions proposed by the present disclosure can be basically or partially implemented in the form of a software product. Alternatively, part of the technical solutions beneficial to the prior art can be implemented in the form of a software product. The software product in the computer is stored in a storage medium, and the software product includes a plurality of commands for a computing device (such as a personal computer, a server or a network device) to run all or some steps disclosed by the embodiments of the present disclosure. The storage medium includes a USB disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a floppy disk or other media capable of storing program codes.

[0060] Although the present disclosure has been described in conjunction with the embodiments considered to be the most practical and preferred, it should be understood that the present disclosure is not limited to the disclosed embodiments, but is intended to cover various arrangements made without departing from the scope of the appended claims most broadly interpreted.

Claims

1. A user equipment for controlling a deactivation timer of at least one secondary cell, SCell, in a wireless communication system, the user equipment comprising: a memory; a transceiver; and a processor coupled to the memory and the transceiver, wherein the processor is configured to: control the transceiver to receive a control indication from a network node over a physical downlink control channel, PDCCH, wherein the control indication indicates a control of the deactivation timer of the at least one SCell; and control the deactivation timer of the at least one SCell according to the control indication, wherein the PDCCH carries a downlink control information, DCI, including the control indication, the processor is configured to control the deactivation timer of the at least one SCell according to the DCI, the control indication including an activation indication and / or a deactivation indication; wherein the activation indication indicates an activation of the deactivation timer of the at least one SCell, such that the DCI is capable of directly indicating an activation of deactivation timers of multiple SCells, and the deactivation indication indicates a deactivation of the deactivation timer of the at least one SCell, such that the DCI is capable of directly indicating a deactivation of deactivation timers of multiple SCells; and wherein the processor is configured to start or restart the deactivation timer of the at least one SCell according to the DCI including the activation indication.

2. The user equipment of claim 1, wherein, the transceiver is configured to receive information from the network node indicating a configuration of the at least one SCell.

3. The user equipment of claim 2, wherein, the processor is configured to identify an activated SCell and / or a serving cell according to the information from the network node indicating a configuration of the at least one SCell.

4. The user equipment of any one of claims 1 to 3, wherein, the transceiver is configured to receive the activation indication from the network node over the PDCCH on an activated SCell, the processor is configured to restart the deactivation timer of the at least one SCell according to the activation indication.

5. The user equipment of claim 4, wherein, the processor is configured to restart the deactivation timer of the at least one SCell according to the DCI including the activation indication.

6. The user equipment of any one of claims 1 to 3, wherein, the transceiver is configured to receive the activation indication from the network node over the PDCCH on a serving cell, the processor is configured to start or restart the deactivation timer of the at least one SCell according to the activation indication.

7. The user equipment of claim 6, wherein, the processor is configured to start or restart the deactivation timer of the at least one SCell according to the DCI including the activation indication.

8. The user equipment of any one of claims 1 to 3, wherein, the transceiver is configured to receive the deactivation indication from the network node over the PDCCH on an activated SCell, the processor is configured to stop the deactivation timer of the at least one SCell according to the deactivation indication.

9. The user equipment of claim 8, wherein, the processor is configured to stop the deactivation timer of the at least one SCell according to the DCI including the deactivation indication.

10. The user equipment of any one of claims 1 to 3, wherein, the transceiver is configured to receive the deactivation indication from the network node over the PDCCH on a serving cell, and the processor is configured to stop the deactivation timer for the at least one SCell in accordance with the deactivation indication.

11. The user equipment of claim 10, wherein, the processor is configured to stop the deactivation timer for the at least one SCell in accordance with the DCI comprising the deactivation indication.

12. A method for controlling a deactivation timer for at least one secondary cell, SCell, of a user equipment, the method comprising: receiving a control indication from a network node over a physical downlink control channel, PDCCH, wherein the control indication indicates a control of the deactivation timer for the at least one SCell; and controlling the deactivation timer for the at least one SCell in accordance with the control indication, wherein the PDCCH carries a downlink control information, DCI, comprising the control indication, the method comprising controlling the deactivation timer for the at least one SCell in accordance with the DCI, the control indication comprising an activation indication and / or a deactivation indication; wherein the activation indication indicates an activation of the deactivation timer for the at least one SCell, such that the DCI can directly indicate an activation of deactivation timers for multiple SCells, and the deactivation indication indicates a deactivation of the deactivation timer for the at least one SCell, such that the DCI can directly indicate a deactivation of deactivation timers for multiple SCells; and wherein the method further comprises starting or restarting the deactivation timer for the at least one SCell in accordance with the DCI comprising the activation indication.

13. The method of claim 12, further comprising: receiving information from the network node indicating a configuration of the at least one SCell.

14. The method of claim 13, further comprising: identifying an activated SCell and / or a serving cell in accordance with the information from the network node indicating a configuration of the at least one SCell.

15. The method of any one of claims 12-14, further comprising: receiving the activation indication from the network node over the PDCCH on an activated SCell and restarting the deactivation timer for the at least one SCell in accordance with the activation indication.

16. The method of claim 15, further comprising: restarting the deactivation timer for the at least one SCell in accordance with the DCI comprising the activation indication.

17. The method of any one of claims 12-14, further comprising: receiving the activation indication from the network node over the PDCCH on a serving cell and starting or restarting the deactivation timer for the at least one SCell in accordance with the activation indication.

18. The method of claim 17, further comprising: starting or restarting the deactivation timer for the at least one SCell in accordance with the DCI comprising the activation indication.

19. The method of any one of claims 12-14, further comprising: receiving the deactivation indication from the network node over the PDCCH on an activated SCell and stopping the deactivation timer for the at least one SCell in accordance with the deactivation indication.

20. The method of claim 19, further comprising: stopping the deactivation timer for the at least one SCell in accordance with the DCI comprising the deactivation indication.

21. The method of any one of claims 12-14, further comprising: receive the deactivation indication from the network node over the PDCCH on a serving cell and stop the deactivation timer of the at least one SCell according to the deactivation indication.

22. The method of claim 21, further comprising: stop the deactivation timer of the at least one SCell according to the DCI comprising the deactivation indication. 23.A network node for controlling a deactivation timer of at least one secondary cell (SCell) in a wireless communication system, the network node comprising: a memory; a transceiver; and a processor coupled to the memory and the transceiver, wherein the processor is configured to: control the transceiver to inform a user equipment (UE) of a control indication over a physical downlink control channel (PDCCH), the control indication indicating a control of the deactivation timer of the at least one SCell; and control the deactivation timer of the at least one SCell according to the control indication, wherein the PDCCH carries a downlink control information (DCI) comprising the control indication, the processor is configured to control the deactivation timer of the at least one SCell according to the DCI, the control indication comprising an activation indication and / or a deactivation indication; wherein the activation indication indicates an activation of the deactivation timer of the at least one SCell, such that the DCI is capable of directly indicating an activation of deactivation timers of multiple SCells, and the deactivation indication indicates a deactivation of the deactivation timer of the at least one SCell, such that the DCI is capable of directly indicating a deactivation of deactivation timers of multiple SCells; and wherein the processor is configured to start or restart the deactivation timer of the at least one SCell according to the DCI comprising the activation indication.

24. The network node of claim 23, wherein, the transceiver is configured to inform the UE of information indicating a configuration of the at least one SCell.

25. The network node of claim 24, wherein, the processor is configured to identify an activated SCell and / or a serving cell according to the information indicating the configuration of the at least one SCell.

26. The network node of any one of claims 23 to 25, wherein, the transceiver is configured to inform the UE of the activation indication over the PDCCH on an activated SCell, the processor is configured to restart the deactivation timer of the at least one SCell according to the activation indication.

27. The network node of claim 26, wherein, the processor is configured to restart the deactivation timer of the at least one SCell according to the DCI comprising the activation indication.

28. The network node of any one of claims 23 to 25, wherein, the transceiver is configured to inform the UE of the activation indication over the PDCCH on a serving cell, the processor is configured to start or restart the deactivation timer of the at least one SCell according to the activation indication.

29. The network node of claim 28, wherein, the processor is configured to start or restart the deactivation timer of the at least one SCell according to the DCI comprising the activation indication. the transceiver is configured to inform the UE of the activation indication over the PDCCH on a serving cell, the processor is configured to start or restart the deactivation timer of the at least one SCell according to the activation indication. the processor is configured to start or restart the deactivation timer of the at least one SCell according to the DCI comprising the activation indication.

30. The network node of any one of claims 23-25, wherein, The transceiver is configured to notify the user equipment of the deactivation indication on an activated SCell through the PDCCH, and the processor is configured to stop the deactivation timer of the at least one SCell according to the deactivation indication.

31. The network node of claim 30, wherein, The processor is configured to stop the deactivation timer of the at least one SCell according to the DCI including the deactivation indication.

32. The network node of any one of claims 23 to 25, wherein, The transceiver is configured to notify the user equipment of the deactivation indication on a serving cell through the PDCCH, and the processor is configured to stop the deactivation timer of the at least one SCell according to the deactivation indication.

33. The network node of claim 32, wherein, The processor is configured to stop the deactivation timer of the at least one SCell according to the DCI including the deactivation indication.

34. A method for controlling a deactivation timer of at least one secondary cell, SCell, of a network node, the method comprising: notifying a user equipment of a control indication through a physical downlink control channel, PDCCH, the control indication indicating a control of the deactivation timer of the at least one SCell; and controlling the deactivation timer of the at least one SCell according to the control indication, wherein the PDCCH carries a downlink control information, DCI, including the control indication, the method comprising: controlling the deactivation timer of the at least one SCell according to the DCI, the control indication including an activation indication and / or a deactivation indication; wherein the activation indication indicates an activation of the deactivation timer of the at least one SCell, such that the DCI is capable of directly indicating an activation of deactivation timers of multiple SCells, and the deactivation indication indicates a deactivation of the deactivation timer of the at least one SCell, such that the DCI is capable of directly indicating a deactivation of deactivation timers of multiple SCells; and wherein the method further comprises: starting or restarting the deactivation timer of the at least one SCell according to the DCI including the activation indication.

35. The method of claim 34, further comprising: notifying the user equipment of information indicating a configuration of the at least one SCell.

36. The method of claim 35, further comprising: identifying an activated SCell and / or a serving cell according to the information indicating the configuration of the at least one SCell.

37. The method of any one of claims 34-36, further comprising: notifying the user equipment of the activation indication on an activated SCell through the PDCCH, and restarting the deactivation timer of the at least one SCell according to the activation indication.

38. The method of claim 37, further comprising: restarting the deactivation timer of the at least one SCell according to the DCI including the activation indication.

39. The method of any one of claims 34-36, further comprising: notifying the user equipment of the activation indication on a serving cell through the PDCCH, and starting or restarting the deactivation timer of the at least one SCell according to the activation indication.

40. The method of claim 39, further comprising: starting or restarting the deactivation timer of the at least one SCell according to the DCI including the activation indication.

41. The method of any one of claims 34-36, further comprising: stopping the deactivation timer of the at least one SCell according to the deactivation indication.

42. The method of claim 41, further comprising: stopping the deactivation timer of the at least one SCell according to the DCI including the deactivation indication.

43. The method of any one of claims 34-36, further comprising: stopping the deactivation timer of the at least one SCell according to the deactivation indication.

44. The method of claim 43, further comprising: stopping the deactivation timer of the at least one SCell according to the DCI including the deactivation indication.

45. A non-transitory machine-readable storage medium having stored thereon instructions, which when executed by a computer, cause the computer to perform the method of any one of claims 12 to 22.

46. A non-transitory machine-readable storage medium having stored thereon instructions, which when executed by a computer, cause the computer to perform the method of any one of claims 34 to 44.

47. A terminal device, the terminal device comprising: a processor and a memory configured to store a computer program, the processor configured to execute the computer program stored in the memory to perform the method of any one of claims 12 to 22.

48. A network node, the network node comprising: a processor and a memory configured to store a computer program, the processor configured to execute the computer program stored in the memory to perform the method of any one of claims 34 to 44.

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