KR102107022B1 - Terminal and method for controlling activation of carrier aggregation - Google Patents

Abstract

The terminal controlling the carrier aggregation operation includes a communication unit that receives a CA (Carrier Aggregation) event from a wireless communication network; And a control unit that determines an operation state of the terminal and determines whether the terminal operates the CA according to a CA event based on the operation state of the terminal. Accordingly, unnecessary power consumption can be prevented by actively controlling the CA operation of the terminal.

Description

Terminal and method for controlling carrier aggregation operation {TERMINAL AND METHOD FOR CONTROLLING ACTIVATION OF CARRIER AGGREGATION}

The present invention relates to a terminal and a method for controlling a carrier aggregation operation, and more particularly, to a terminal and a method for controlling the carrier aggregation function not to operate according to the operation state of the terminal in a wireless communication system in which carrier aggregation is used. .

In a recent mobile communication system, an orthogonal frequency division multiple access (hereinafter referred to as OFDMA) method, or a similar method, is useful for high-speed data transmission in a wireless channel. Frequency Division Multiple Access (hereinafter referred to as SC-FDMA) method has been actively researched. In the multiple access method described above, data or control information of each user is classified by assigning and operating so that time-frequency resources to be loaded with data or control information for each user do not overlap with each other, that is, orthogonality is established. do.

One of the important to provide a high-speed wireless data service in a cellular wireless communication system is the support of scalable bandwidth. As an example, the LTE (Long Term Evolution) system is capable of having various bandwidths such as 20/15/10/5/3 / 1.4 MHz. Service providers can provide a service by selecting from among the above-mentioned bandwidths, and there can be various types of terminals, such as supporting a maximum 20 MHz bandwidth and supporting only a minimum 1.4 MHz bandwidth.

And, in the LTE-Advanced (hereinafter referred to as LTE-A) system that aims to provide the service of the IMT-Advanced demand level, up to 100 through a combination of LTE carriers (or carrier aggregation) (carrier aggregation) It can provide broadband services that reach MHz bandwidth. The LTE-A system requires broadband over the LTE system for high-speed data transmission. At the same time, backward compatibility with LTE terminals is also important, and LTE terminals must also be able to access the LTE-Advanced system and receive services.

To this end, the LTE-A system divides the entire system band into subbands or component carriers (CCs) of a bandwidth that an LTE terminal can transmit or receive, and combines predetermined component carriers and then combines each component carrier. By generating and transmitting data for each component, it is possible to support high-speed data transmission of the LTE-A system by utilizing the transmission / reception process of the existing LTE system for each component carrier.

Here, each component carrier corresponds to a cell. The base station can be configured to allow the UE to operate in a number of cells, and the cell is divided into a primary serving cell (Pcell) and a secondary serving cell (Scell). When an Scell is added, the speed increases but the additional RF chip is driven to drive the current. Consumption increases.

The CA operation of the current terminal is manually controlled by the network. That is, if the terminal is a terminal that supports CA operation, and the network is also capable of CA operation, the network transmits an Scell Add command to the terminal for the CA, and the terminal is driven by Scell Add as the command transmitted from the network. In this case, since the network does not know the state of the terminal, it transmits a command (Scell Add, Scell Activation) for CA operation on a network basis, and the CA operates by the network even when the high data rate is not required. There is a problem in that additional current by driving is consumed.

Accordingly, the technical problem of the present invention was devised in this regard, and an object of the present invention is to provide a terminal capable of preventing power consumption by controlling a carrier aggregation operation according to an operation state of the terminal.

Another object of the present invention is to provide a method for controlling a carrier aggregation operation in the terminal.

A terminal capable of wireless communication according to an embodiment of the present invention for realizing the object of the present invention includes: a communication unit receiving a CA (Carrier Aggregation) event from a wireless communication network; And a control unit determining an operation state of the terminal and determining whether the terminal operates the CA according to the CA event based on the operation state of the terminal.

In an embodiment of the present invention, the control unit may include: a status determination unit that determines an operation state of the terminal based on a user event detected by the terminal; And a CA determination unit that determines whether the terminal operates the CA according to the CA event based on the operation state of the terminal and generates a control signal.

In an embodiment of the present invention, the terminal may further include a processing unit that processes the CA event according to the determination of the control unit.

In an embodiment of the present invention, the control signal may be a CA enable signal or a CA disable signal.

In an embodiment of the present invention, the user event is a display on / off signal, a tethering on / off signal, a charging on / off signal, a background application on / off It can be one of the signals.

In an embodiment of the present invention, when the user event is one of a display unit off signal, a tethering off signal, a charging off signal, and a background application off signal, the control signal is CA inoperative (disable) signal.

In an embodiment of the present invention, when the control signal is a CA disable signal, and the CA event is a secondary cell (Scell) add command, the CA event processing unit issues the Scell addition command to the terminal. It is transmitted to the basic module, but can also transmit a disable command signal of the Scell RF chip.

In an embodiment of the present invention, when the control signal is a CA disable signal, and the CA event is a secondary cell (Scell) add command, the CA event processing unit issues the Scell addition command to the terminal. It may not be transmitted to the basic module.

In an embodiment of the present invention, the CA event processing unit may store or discard the Scell addition command.

In an embodiment of the present invention, when the control signal is a CA disable signal and the CA event is a Secondary Serving Cell (Scell) activation command, the CA event processing unit checks for the Scell activation command An ACK signal may be transmitted to the wireless communication network.

In an embodiment of the present invention, when the control signal is a CA disable signal and the CA event is a Secondary Serving Cell (Scell) activation command, the CA event processing unit responds to the Scell activation command You may not.

In an embodiment of the present invention, when the control signal is a CA disable signal, and the CA event is a Secondary Serving Cell (Scell) activation command, the CA event processing unit denies the Scell activation command. An acknowledgment (NACK) signal may be transmitted to the wireless communication network.

In an embodiment of the present invention, when the control signal is a CA enable signal, the CA event processor may prepare and activate the Scell operation by normally processing the CA event.

In an embodiment of the present invention, the terminal may further include a user event receiver that provides a user event detected by the terminal to the controller.

A method of controlling a carrier aggregation operation in a terminal capable of wireless communication according to another embodiment for realizing the object of the present invention includes receiving a CA (Carrier Aggregation) event from a wireless communication network; Determining an operation state of the terminal based on a user event detected by the terminal; And determining whether to operate the CA according to the CA event, based on the operation state of the terminal.

In an embodiment of the present invention, the step of determining whether the CA is operated may further include forming a control signal according to whether the CA is operated, and processing the CA event according to the control signal.

In an embodiment of the present invention, the control signal may be a CA enable signal or a CA disable signal.

In an embodiment of the present invention, when the control signal is a CA disable signal, and the CA event is a second cell adding command (Scell), processing the CA event may include adding the Scell. Transmitting a command to the basic module of the terminal; And transmitting a disable command signal of the Scell RF chip together.

In an embodiment of the present invention, when the control signal is a CA disable signal, and the CA event is a second cell adding command (Scell), processing the CA event may include adding the Scell. Commands may not be sent to the base module of the terminal.

In an embodiment of the present invention, the processing of the CA event may further include storing or discarding the Scell addition command.

In an embodiment of the present invention, when the control signal is a CA disable signal and the CA event is a Secondary Serving Cell (Scell) activation command, processing the CA event may include activating the Scell. And transmitting an acknowledgment (ACK) signal to the wireless communication network.

In an embodiment of the present invention, when the control signal is a CA disable signal and the CA event is a Secondary Serving Cell (Scell) activation command, processing the CA event may include activating the Scell. You may not respond to commands.

In an embodiment of the present invention, when the control signal is a CA disable signal and the CA event is a Secondary Serving Cell (Scell) activation command, processing the CA event includes: The processing unit may include transmitting a negative acknowledgment (NACK) signal to the wireless communication network for the Scell activation command.

In an embodiment of the present invention, when the control signal is a CA enable signal, the processing of the CA event may prepare and activate the Scell operation by normally processing the CA event. .

According to the terminal and the method for controlling the carrier aggregation operation as described above, by analyzing the operation state of the terminal, if the terminal does not need a fast speed, the carrier aggregation operation is not driven to prevent additional current consumption by the Scell, and the fast speed When is necessary, the carrier aggregation operation is driven to transmit data at a high speed to actively control the carrier aggregation operation. Accordingly, the user can use the terminal at a high data rate, and at the same time, the current consumption of the terminal can be prevented, thereby increasing the efficiency of terminal power use.

1 is a block diagram of a CA control module of a terminal according to an embodiment of the present invention.
2A and 2B are examples of a method of processing an Scell addition instruction in the processing unit of FIG. 1.
3A to 3C are examples of a method of processing an Scell activation command in the processing unit of FIG. 1.
4 is a flowchart of a method of controlling a carrier aggregation operation according to an embodiment of the present invention.

Hereinafter, preferred embodiments of a terminal and a method for controlling a carrier aggregation operation will be described in more detail with reference to the drawings.

1 is a block diagram of a CA control module of a terminal according to an embodiment of the present invention.

Referring to FIG. 1, a CA (Carrier Aggregation) control module 300 of a terminal 1 according to the present invention receives a CA event from the wireless communication network 3 and does not process all events. The current operating state of 1) is grasped and the CA is enabled or disabled based on this.

Hereinafter, a description will be given to a wireless communication network, and the work performed in the wireless communication network is performed in a process of controlling a network and transmitting data in a system (for example, a base station) that is in charge of the wireless communication network, or the corresponding wireless communication network. The operation can be performed in a terminal coupled to the network.

Wireless communication systems are widely deployed to provide various communication services such as voice and packet data. The wireless communication system includes at least one base station (BS, not shown) and a repeater (not shown). Each base station provides communication service for a specific cell. The cell can be further divided into a number of regions (called sectors).

In general, carriers support wireless services for a desired service area by installing multiple base stations. However, for some areas, areas where wireless service is not properly performed may occur due to terrain conditions. This is called a shaded area and a repeater can be used to remove the shaded area.

The terminal (1, terminal) may be fixed or mobile, user equipment (UE), mobile station (MS), mobile terminal (MT), user terminal (UT), subscriber station (SS), wireless device (wireless) device, personal digital assistant (PDA), wireless modem, handheld device, and other terms.

The terminal 1 is a device supporting wireless communication, a smart phone, a mobile phone, a tablet computer, a laptop, a netbook, a PDA, a PMP, a PSP, an MP3 player, and an eBook (e-book) Readers, navigation, smart cameras, electronic dictionaries, electronic clocks, game machines, and other types of mobile devices, as well as desktop computers, smart TVs, printers, and electronic devices with all communication functions added It may include.

The terminal 1 can execute various application programs based on an operating system (OS). The operating system is a system program for allowing an application program to use the hardware of the terminal, and is a mobile computer operating system such as Android OS, iOS, Windows Mobile OS, Sea OS, Symbian OS, and BlackBerry OS, and Windows, Linux, and Unix series. , MAC, AIX, HP-UX, and computer operating systems.

The application program is a program developed to perform a specific task using a terminal device, and not only various application and service objects, but also various multimedia contents such as games, videos, and pictures, or an image viewer that executes the multimedia contents , A video player, and the like.

The terminal 1 may display an application program through the display unit 10 or provide a user interface (UI) to the user. The display unit 10 may include a liquid crystal display (LCD) panel, a plasma display panel (PDP), an organic light-emitting diode (OLED) display panel, and the like.

Also, a touch screen function may be included in the display unit 10 to process a user input or may be provided as a separate touch pad device. Alternatively, the terminal 1 may be formed separately from the display unit 10 and may include an input unit (not shown) such as a keypad for receiving user input.

The basic module 400 of the terminal 1 collectively refers to modules that perform the original function of the terminal, a radio resource control (RRC) layer, a medium access control (MAC) layer, It may include a physical (PHY) layer.

The network 3 includes a base station, an evolved-NodeB (eNB), a base transceiver system (BTS), an access point (AP), a femto base station, a home base station (Home nodeB), a relay, etc. It can be called as a term. Cells should be interpreted in a comprehensive sense indicating some areas covered by a base station, and mean all the various coverage areas such as megacells, macrocells, microcells, picocells, and femtocells.

There are no restrictions on the multiple access technique applied to the wireless communication system. Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier-FDMA (SC-FDMA), OFDM-FDMA, OFDM-TDMA , OFDM-CDMA can use various multiple access techniques. For uplink transmission and downlink transmission, a time division duplex (TDD) scheme transmitted using different times may be used, or a frequency division duplex (FDD) scheme transmitted using different frequencies may be used.

Carrier aggregation (CA) refers to a plurality of carriers and is also referred to as spectrum aggregation or bandwidth aggregation. The individual unit carriers grouped by carrier aggregation are called component carriers (CCs). Each component carrier is defined by a bandwidth and a center frequency. Carrier aggregation is introduced to support increased throughput, prevent cost increase due to the introduction of a wideband radio frequency (RF) device, and ensure compatibility with existing systems. For example, if 5 component carriers are allocated as granularity of a carrier unit having a 20 MHz bandwidth, a bandwidth of up to 100 MHz can be supported.

Carrier aggregation can be divided into contiguous carrier aggregation between continuous component carriers in the frequency domain and non-contiguous carrier aggregation between discontinuous component carriers. The number of carriers aggregated between the downlink and the uplink may be set differently. A case in which the number of downlink component carriers and the number of uplink component carriers are the same is called symmetric aggregation, and a case in which the number is different is called asymmetric aggregation.

The size (ie bandwidth) of the component carriers may be different. For example, if 5 component carriers are used for the configuration of the 70 MHz band, 5 MHz component carrier (carrier # 0) + 20 MHz component carrier (carrier # 1) + 20 MHz component carrier (carrier # 2) It may be configured as + 20 MHz component carrier (carrier # 3) + 5 MHz component carrier (carrier # 4).

The multiple component carrier system refers to a system supporting carrier aggregation. In a multi-element carrier system, adjacent carrier aggregation and / or non-contiguous carrier aggregation may be used, and either symmetric aggregation or asymmetric aggregation may be used.

When configuring a CA in wireless communication (for example, LTE-Advanced), there are two types of cells (one CA), a primary serving cell (hereinafter referred to as a Pcell) and a secondary serving cell (hereinafter referred to as a secondary serving cell). Scell). In the case of Pcell, it belongs to the PCC (Primary Componet Carrier), RRC (Radio Resource Control) connection establishment / re-establishment, measurement, mobility procedure, random access procedure and selection, system information acquisition, initial random access, security key change and Non-Access It provides Stratum (NAS) function. Since Pcell performs system information monitoring, it can never be disabled, and only one RRC can be connected.

Up to four Scells can be added, and only when additional radio resources are needed are acquired through dedicated signaling with an RRC Connection Reconfiguration message message. In this message, a physical cell ID for each cell is transmitted and includes DL Carrier Frequency ARFCN (Absolute Radio Frequency Channel Nmuber).

The CA control module 300 determines the operating state of the communication unit 310 and the terminal 1 receiving a CA (Carrier Aggregation) event from the wireless communication network, and based on the operating state, the CA event The control unit 350 determines whether the terminal operates according to the CA. In addition, the CA control module 300 provides a user event detected by the processing unit 370 and the terminal 1 processing the CA event to the control unit 350 according to the determination of the control unit 350. The user event receiver 330 may be further included. The CA control module 300 may be a modem inside the terminal 1.

The communication unit 310 receives the CA event from the network 3 and delivers it to the control unit 350. The CA event may be an Scell add command and an Scell activation command transmitted by the network 3 when additional radio resource provision is required.

Conventionally, when an Scell addition command is received from the network, the terminal prepares the operation of the Scell (configured), and when the Scell activation command is received, the terminal activates the Scell to support wireless communication. However, in this case, power for driving the Scell is consumed even when a high data rate is not required, such as when the user does not use the terminal.

However, according to the present invention, even if the Scell addition command is received, the terminal 1 does not immediately prepare for the operation of the Scell, and determines whether to operate the Scell according to the state of the terminal 1.

The user event receiving unit 330 receives the user event detected by the terminal 1 and transmits it to the control unit 350. The user event may be received whenever a user event occurs or changed, or may be received whenever the CA event is received. Further, the user event may be periodically received at a predetermined time.

The user event receiving unit 330 may receive the user event from the user event detection module 200. The user event detection module 200 may be an application processor (AP) inside the terminal 1. The user event detection module 200 may be formed as a separate module from the CA control module 300 or integrated.

The user event detection module 200 includes a user event detection unit 210, a user event analysis unit 230, and a user event transmission unit 250.

The user event detection unit 210 detects a user event generated or changed in the terminal 1 and transmits it to the user event analysis unit 230. For example, the user event is one of a display on / off signal, a tethering on / off signal, a charging on / off signal, and a background application on / off signal. Can be

Also, it may be a signal as to whether or not a foreground application uses network resources. However, these are only examples, and may include all user events occurring in the terminal 1, and may also include user events input by the user.

The user event analysis unit 230 analyzes the received user event for validity and duplication, and determines whether to transmit the received user event to the CA control module 300. When the user event analysis unit 230 determines to deliver the user event to the CA control module 300, the user event transmission unit 250 sends the user event to the user of the CA control module 300. It is transmitted to the event receiver 330.

The control unit 350 determines an operation state of the terminal 1 based on a CA event received from the communication unit 310 and a user event received from the user event reception unit 330 and determines the operating state of the terminal 1. Decide whether to operate CA. For example, even if the CA event is the Scell addition command and the Scell activation command, it may be determined that the Scell operation is not required by the user event.

The control unit 350, the status determination unit for determining the operation state of the terminal based on the user event detected by the terminal 1 and the terminal according to the CA event based on the operation state of the terminal 1 It may include a CA determining unit for determining whether to operate the CA in (1) to generate a control signal.

The control unit 350 may form a control signal according to the determination of whether to operate the CA. For example, when it is determined that the Scell operation is necessary, a CA enable signal may be generated, and when it is determined that the Scell operation is not necessary, the CA disable signal may be generated. The control unit 350 outputs the generated control signal to the processing unit 370.

In one embodiment of the present invention, when the user event is one of a display unit off signal, a dithering off signal, a charging off signal, and a background application off signal, the control signal may be a CA disable signal. In addition, even when the foreground application does not use network resources, the control signal may be a CA disable signal. When the display unit 10 of the terminal 1 is turned off, or if an application does not work or does not need network resources even if the application does not operate, the user does not use data, and thus, a high data rate is not required. Therefore, it is because the terminal 1 can determine that the CA operation is unnecessary.

The processing unit 370 processes CA events according to a control signal provided by the control unit 350.

When the control unit 350 determines that the CA operation is necessary, the processing unit 370 normally processes the CA event. That is, when the CA enable signal is input to the processing unit 370, the CA event is transmitted to the basic module 400 of the terminal 1, and the basic module 400 according to the Scell addition command Prepares the operation of the Scell (configured), and activates the Scell according to the Scell activation command. In this case, the terminal 1 has a wide bandwidth due to CA operation and can provide a fast data rate to the user.

On the other hand, if the control unit 350 determines that the CA operation is unnecessary, the processing unit 370 deactivates the Scell by not processing the CA event normally. Accordingly, when additional radio resources are not required, unnecessary operation waste can be reduced by blocking CA operation.

When the CA disable signal is input to the processing unit 370, examples of a method for processing an Scell addition command and an Scell activation command will be described below with reference to FIGS. 2 and 3.

2A and 2B are examples of a method of processing an Scell addition instruction in the processing unit of FIG. 1.

Referring to FIG. 2A, as an example of processing when a CA event is an Scell addition command, the processing unit 370 transmits the Scell addition command to the basic module 400 of the terminal 1. At this time, the processing unit 370 transmits a disable command signal of the Scell RF chip. In this case, the basic module 400 processes the Scell addition command, but does not use the RF resource required to drive the Scell. Therefore, since the RF for the Scell, which is the main cause of the additional consumption of current, is not used, power consumption does not increase.

Referring to FIG. 2B, as another example of processing when a CA event is an Scell addition command, the processing unit 370 does not transmit the Scell addition command to the basic module 400 of the terminal 1. At this time, the processing unit 370 may discard the Scell addition command or store it in the storage unit inside the processing unit 370. In this case, since the basic module 400 has no information on the Scell, RF resources and additional processes are not required. Therefore, the terminal 1 maintains the same state as a terminal that does not support the CA function, and no additional current is consumed.

3A to 3C are examples of a method of processing an Scell activation command in the processing unit of FIG. 1.

Referring to FIG. 3A, as an example of processing when a CA event is an Scell activation command, the processing unit 370 transmits an acknowledgment (ACK) signal to the network 3 for the Scell activation command. In this case, since the operation of the Scell is not prepared for the Scell addition command, resources for the Scell cannot be allocated. Therefore, the terminal 1 operates as if it is in a shaded area.

Referring to FIG. 3B, as another example of processing when a CA event is an Scell activation command, the processing unit 370 does not respond to the Scell activation command. In this case, the network 3 does not receive the resources for the Scell because the processing for the activation of the Scell is not completed.

Referring to FIG. 3C, as another example of processing when a CA event is an Scell activation command, the processing unit 370 transmits a negative acknowledgment (NACK) signal to the network 3 for the Scell activation command. In this case, the network 3 does not receive the resources for the Scell because the processing for the activation of the Scell is not completed.

The methods for processing the Scell addition command and the Scell activation command described above are only examples, and may be variously changed as necessary in consideration of network suitability, current efficiency, and user usability.

According to the terminal 1 for controlling the carrier aggregation operation according to the present invention, CA processing is actively controlled by differently processing a CA event according to a user event. Therefore, when a fast speed is not required in the terminal, the CA operation is not driven to prevent additional current consumption according to the Scell, thereby increasing the efficiency of power use without problems in the use of the terminal.

4 is a flowchart of a method of controlling a carrier aggregation operation according to an embodiment of the present invention.

The method for controlling the carrier aggregation operation according to the present embodiment may be performed in substantially the same configuration as the terminal 1 and the wireless communication network 3 of FIG. 1. Therefore, the same components as the terminal 1 and the wireless communication network 3 in FIG. 1 are given the same reference numerals, and repeated descriptions are omitted.

Referring to FIG. 4, when a data call is connected to the network 3, the terminal 1 is connected to LTE, but the operation of the Scell is not ready (step S000). This state is a state in which only the Pcell operates, and the terminal 1 is the same state as a terminal that does not support the CA function. In order for the terminal 1 to operate the CA, the Scell add command and the Scell activation command must be received from the network 3.

Thereafter, the terminal 1 receives an Scell addition command from the network 3 (step S100). In this case, the terminal 1 does not immediately prepare for the operation of the Scell, and determines whether to operate the Scell according to the state of the terminal 1.

To this end, first, the terminal 1 receives a user event detected inside the terminal (step S300). The user event may be received whenever a user event occurs or changed, or may be received whenever the CA event is received. Further, the user event may be periodically received at a predetermined time.

The terminal 1 determines the operation state of the terminal 1 based on the received CA event and the user event, and determines whether the terminal 1 operates the CA based on this (step S500). The terminal 1 may form a control signal according to the determination of whether to operate the CA. For example, when it is determined that the Scell operation is necessary, a CA enable signal may be generated, and when it is determined that the Scell operation is not necessary, the CA disable signal may be generated.

If it is determined that CA operation is necessary, the CA event is normally processed. That is, when the CA enable signal is generated, the operation of the Scell is prepared according to the Scell addition instruction (step S720). In this case, the Scell has not been activated yet.

Subsequently, the terminal 1 receives an Scell activation command from the network 3 (step S740). Again, since the CA event is normally processed, the Scell is activated according to the Scell activation command (step S760), and the CA operation is started. In this case, the terminal 1 has a wide bandwidth due to the CA operation and provides a fast data rate to the user.

If it is determined that the CA operation is unnecessary, the Scell is deactivated by not processing the CA event normally. Accordingly, when additional radio resources are not required, unnecessary CA operation may be blocked to reduce power waste.

When the CA disable signal is generated, the Scell addition instruction is not followed, and thus the operation of the Scell is not prepared (step S710). An example of a method for processing such an Scell addition instruction has been described in FIGS. 2A and 2B.

Subsequently, the terminal 1 receives an Scell activation command from the network 3 (step S730). Again, since the CA event is not normally processed, the operation of the Scell is not prepared (step S750). An example of a method for processing such an Scell addition instruction has been described in FIGS. 2A and 2B.

As described above, according to the method for controlling the carrier aggregation operation according to the present invention, the CA operation can be actively controlled to prevent additional current consumption according to the Scell when the CA operation is not required.

Although described above with reference to embodiments, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand.

1: Terminal 10: Display
3: Wireless communication network 300: CA control module
310: communication unit 330: user event receiving unit
350: control unit 370: processing unit
200: user event detection module 210: user event detection unit
230: user event analysis unit 250: user event transmission unit
400: base module

Claims (24)

In a terminal capable of wireless communication,
A communication unit receiving a CA (Carrier Aggregation) event from a wireless communication network;
A control unit determining an operation state of the terminal and determining whether the terminal operates the CA according to the CA event based on the operation state of the terminal;
According to the determination of the control unit, and includes a processing unit for processing the CA event,
The control unit,
A state determination unit determining an operation state of the terminal based on a user event detected by the terminal;
And a CA determination unit that determines whether the terminal operates the CA according to the CA event based on the operation state of the terminal and generates a control signal.
The control signal is a CA disabled signal when the user event is one of a display off signal, a tethering off signal, a charging off signal, or a background application off signal. Will have
The processing unit
When the control signal is a CA disable signal, and the CA event is a secondary serving cell (Scell) add command, the Scell addition command is transmitted to the basic module of the terminal, but the Scell RF chip When the control signal is a CA disable signal, and the CA event is a second serving cell (Scell) add command, the Scell addition command is transmitted to the terminal. If the control signal is not transmitted to the basic module of, and the control signal is a CA disable signal, and the CA event is an Scell (Secondary serving cell) activation command, an acknowledgment (ACK) to the Scell activation command When a signal is transmitted to the wireless communication network, the control signal is a CA disable signal, and the CA event is a secondary serving cell (Scell) activation command, the Scell activation command is not responded. Or, if the control signal is a CA disable signal, and the CA event is a Secondary Serving Cell (Scell) activation command, a negative acknowledgment (NACK) signal is received for the Scell activation command. A terminal characterized in that it is transmitted over a wireless communication network.
delete delete delete delete delete delete delete delete delete delete delete delete delete In a method for controlling a carrier aggregation operation in a terminal capable of wireless communication,
Receiving a CA (Carrier Aggregation) event from a wireless communication network;
Determining an operation state of the terminal based on a user event detected by the terminal;
And determining whether to operate the CA according to the CA event, based on the operation state of the terminal,
The determining whether the CA operation is performed includes forming a control signal according to whether the CA operation is performed, and processing the CA event according to the control signal,
The control signal is a CA disabled signal when the user event is one of a display off signal, a tethering off signal, a charging off signal, or a background application off signal. Will have
The step of processing the CA event,
When the control signal is a CA disable signal, and when the CA event is a secondary serving cell (Scell) add command, transmitting the Scell addition command to the basic module of the terminal and the Scell RF chip (chip) ), Together with transmitting a disable command signal, when the control signal is a CA disable signal, and when the CA event is a Scell (Secondary serving cell) add command, And not transmitting the Scell addition command to the base module of the terminal. If the control signal is a CA disable signal, and the CA event is a secondary serving cell (Scell) activation command, And transmitting an acknowledgment (ACK) signal to the wireless communication network with respect to the Scell activation command, wherein the control signal is a CA disable signal, and the CA event is a secondary serving cell (Scell). In the case of an activation command, a step of not responding to the Scell activation command is included, or, the control signal is a CA disable signal, and the CA event activates a secondary serving cell (Scell) ( activation) command, transmitting a negative acknowledgment (NACK) signal to the wireless communication network with respect to the Scell activation command. delete delete delete delete delete delete delete delete delete

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