KR20120130735A - Method and apparatus to improve inter-band carrier aggregation ca in tdd time division duplex mode - Google Patents

Abstract

PURPOSE: A method and apparatus for improving inter-band carrier aggregation in a time division duplex mode are provided to set a TDD(time division duplex mode) UL(uplink)-DL(downlink) for an activated serving cell in order to define continued PDCCH(Physical Downlink Control Channel) subframes. CONSTITUTION: An UE is connected to a PCell(505). The PCell is always activated. The UE is set up by including one or more SCells(510). The SCells include one or more deactivated SCells. TDD UL-DL set-up for the preset SCell and the connected PCell can be different. The SCells are activated via an activation and deactivation MAC(medium access control) control element. The TDD UL-DL set-up for the activated serving cell is applied to define successive PDCCH subframes of drx-InactivityTimer. [Reference numerals] (505) Connecting an UE to a PCell; (510) Setting the UE using one or more Scells so that one or more Scells are activated and DD UL-DLs of a Pcell and one or more Scells are differently set; (515) Considering the setting of not the TDD UL-DL of an inactivated serving cell but the TDD UL-DL of an activated serving cell so that successive PDCCH subframes of a drx-InactivityTimer are defined; (AA) Start; (BB) End

Description

METHOD AND APPARATUS TO IMPROVE INTER-BAND CARRIER AGGREGATION (CA) IN TDD (TIME DIVISION DUPLEX) MODE}

Cross Reference of Related Applications

This application enjoys priority over the application of US Provisional Patent Serial No. 61 / 489,003, filed May 25, 2011, the entire disclosure of which is incorporated herein by reference. In addition, this application claims priority to U.S. Patent Application Serial No. 13 / 464,472 filed on May 5, 2012, which enjoys priority to the application of U.S. Provisional Patent Application Serial No. 61 / 483,487, filed on May 15, 2011. -in-part) application. The application of US patent application Ser. No. 13 / 464,472 is hereby incorporated by reference in its entirety.

Field of technology

The disclosure herein relates generally to wireless communication networks, and more particularly to improving inter-band carrier aggregation (CA) in time division duplex (TDD) mode. A method and apparatus for making

In line with the rapidly growing demand for delivering large amounts of data to and from mobile communication devices, traditional mobile voice communication networks have evolved into networks that communicate with Internet Protocol (IP) data packets. have. Such IP data packet communication can provide users of mobile communication devices with voice over IP (VoIP), multimedia, multicast and on-demand communication services.

An example network structure in which standardization is currently occurring is the Evolved Universal Terrestrial Radio Access Network (E-UTRAN). The E-UTRAN system can provide high speed throughput in order to realize voice service and multimedia service through IP mentioned above. Standardization of the E-UTRAN system is currently being performed by the 3GPP standardization organization. Accordingly, changes to the current major part of the 3GPP standard are currently being submitted and so are considered to develop and complete the 3GPP standard.

RP-110451, "WID: LTE carrier aggregation enhancements". TS 36.211 V10.1.0, "E-UTRA Physical channel and modulation". TS 36.321 V10.1.0, "MAC protocol specification (Release 10)". TS 36.331 V10.1.0, "RRC protocol specification (Release 10)".

The present invention seeks to provide a method and apparatus for improving inter-band carrier aggregation (CA) in TDD mode.

A method and apparatus for improving inter-band carrier aggregation in a user equipment (UE) in a time division duplex (TDD) mode is disclosed. In one embodiment, the method comprises connecting the UE to a Primary Serving Cell (PCell). The method further comprises configuring the UE using at least one Secondary Serving Cell (Scell), in which case at least one Scell is deactivated, the PCell and at least one SCell of the UE. TDD UL-DL (Uplink-Downlink) settings may be different. The method takes into account the TDD UL-DL configuration of the activated serving cell, and the TDD UL-DL configuration of the deactivated serving cell to define contiguous Physical Downlink Control Channel (PDCCH) subframes of drx-InactivityTimer . It also includes a step that does not.

The effects of the present invention are individually indicated in the corresponding parts of this specification.

1 shows a diagram of a wireless communication system in accordance with an exemplary embodiment of the present invention.
2 is a block diagram of a transmitter system (also known as an access network) and a receiver system (also known as a user equipment or UE) in accordance with an exemplary embodiment of the present invention.
3 shows a functional block diagram of a communication system according to an exemplary embodiment of the present invention.
4 is a functional block diagram of the program code of FIG. 3 in accordance with an exemplary embodiment of the present invention.
5 illustrates a flowchart in accordance with one exemplary embodiment of the present invention.

Example wireless communication systems and devices described below employ a wireless communication system that supports broadcast services. Wireless communication systems are widely deployed to provide various types of communication such as voice, data, and the like. These systems include division multiple access (CDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), and 3GPP Long Term LTE (LTE). Evolution) wireless access, 3GPP LTE-A or LTE-Advanced (Long Term Evolution Advanced), 3GPP2 Ultra Mobile Broadband (UMB), WiMax, or some other modulation technologies.

In particular, the exemplary wireless communication systems and devices described below may be designed to support one or more standards, such as those provided by a consortium named "3rd Generation Partnership Project" referred to herein as 3GPP. It will be appreciated that this standard by 3GPP includes the following documents: Document number RP-110451, "WID: LTE carrier aggregation enhancements"; TS 36.211 V10.1.0, "E-UTRA Physical channel and modulation"; TS 36.321 V10.1.0, "MAC protocol specification (Release 10)"; And TS 36.331 V10.1.0, "RRC protocol specification (Release 10)". These standards and the documents listed above are hereby expressly incorporated in their entirety.

1 illustrates a multiple access wireless communication system according to an embodiment of the present invention. Access network (AN) 100 includes multiple antenna groups, one group comprising antennas 104 and 106, the other group comprising antennas 108 and 110, and further groups Antennas 112 and 114; In FIG. 1, only two antennas are shown for each antenna group, but more or fewer antennas may be utilized for each antenna group. The access terminal (AT) 116 is in communication with the antennas 112 and 114, in which case the antennas 112 and 114 transmit information to the access terminal 116 via the forward link 120 and Receive information from access terminal 116 via reverse link 118. The access terminal (AT) 122 is in communication with the antennas 106 and 108, in which case the antennas 106 and 108 transmit information to the access terminal 122 over the forward link 126 and Receive information from access terminal 122 over reverse link 124. In an FDD system, communication links 118, 120, 124, 126 may use different frequencies for communication. For example, forward link 120 may use a different frequency than the frequency used by reverse link 118.

Each group of antennas and / or the area in which they are designed to communicate is often referred to as a sector of an access network. In this embodiment, each of the antenna groups is designed to communicate with access terminals in a sector of the areas covered by the access network 100.

In communication over forward links 120 and 1265, the transmit antennas of access network 100 are beamforming to improve the signal-to-noise ratio of the forward links for other access terminals 116, 122. ). In addition, an access network that uses beamforming to transmit through its coverage to randomly scattered access terminals, access terminals in neighboring cells, rather than an access network transmitting to all its access terminals through a single antenna. To make the interference smaller.

An access network (AN) can be a fixed station or base station for communicating with terminals and includes an access point, Node B, base station, enhanced base station, eNodeB. Or may be referred to as any other term. An access terminal (AT) may also be called a user equipment (UE), a wireless communication device, a terminal, an access terminal, or some other terminology.

2 is a simplified illustration of an embodiment of a transmitter system 210 (also known as an access network) and a receiver system 250 (also known as an access terminal (AT) or user equipment (UE)) within a MIMO system 200. It is a block diagram. Traffic data for a large number of data streams in transmitter system 210 is provided from data source 212 to transmit (TX) data processor 214.

In one embodiment, each data stream is transmitted via its own transmit antenna. TX data processor 214 formats, codes, and interleaves the traffic data for each data stream based on a particular coding scheme selected for that data stream for each data stream and supplies the coded data.

The coded data for each data stream may be multiplexed into pilot data using OFDM techniques. The pilot data is typically a known data pattern processed in a known manner and may be used in the receiver system to evaluate the channel response. The multiplexed pilot and coded data for each data stream is then modulated (i.e., based on a particular modulation scheme selected for that data stream (e.g., BPSK, QPSK, M-PSK, or M-QAM). Supplies symbol modulation symbols. The data rate, coding and modulation for each data stream may be determined by the instructions performed by processor 230.

Modulation symbols for all data streams are then provided to the TX MIMO processor 20, which may further process the modulation symbol (eg, for OFDM). TX MIMO processor 220 then supplies the N _T modulation symbol streams to the N _T transmitters (TMTR) with reference numerals 222a through 222t. In certain embodiments, TX MIMO processor 220 applies beamforming weights to the symbols of the data streams and to the antenna from which the symbol is being transmitted.

Each transmitter 222 receives and processes its respective symbol stream to provide one or more analog signals, and further conditioned (eg, amplifies, filters, and upconverts) the analog signals. Provides a modulated signal suitable for transmission over a MIMO channel. N _T modulated signals from N _T transmitters 222a through 222t are then transmitted from N _T antennas 224a through 224t, respectively.

In the receiver system 250, the modulated and transmitted signals are received by N _R antennas 252a through 252r and the received signals from each antenna 252 are each of 254a through 254r. Provided to the receiver (RCVR). Each receiver 254 conditions (eg, filters, amplifies, and downconverts) a received signal, binarizes the conditioned signal to provide samples, and further processes the samples to correspond. Provides a "receive" symbol stream.

RX data processor 260 provides N _R received symbols to receive and to process the stream based on a particular receiver processing technique of N _T "detected" symbol streams from the N _R receivers This 254. The The RX data processor 260 then demodulates, deinterleaves, and decodes each detected symbol stream to recover the traffic data for that data stream. The processing by the RX data processor 260 is complementary to the processing performed by the TX MIMO processor 220 and the TX data processor 214 in the transmitter system 210.

The processor at 270 periodically determines which pre-coding matrix to use (described below). Processor 270 creates a reverse link message comprising a matrix index portion and a rank value portion.

The reverse link message may include various types of information regarding the communication link and / or the received data stream. The reverse link message is then processed by the TX data processor 238 receiving traffic data for the various data streams from the data source 236, modulated by the modulator 280, and referred to by reference numerals 254a through 254r. It is conditioned by the transmitters and sent back to the transmitter system 210.

In transmitter system 210, the modulated signals from receiver system 250 are received by antenna 224, conditioned by receivers 222, demodulated by demodulator 240, and RX Processed by data processor 242 to extract the reverse link message sent by receiver system 250. The processor 230 then determines which pre-coding matrix should be used to determine the beamforming weights and processes the extracted message.

3, this diagram shows a simplified functional block diagram of a communication device according to an embodiment of the present invention. As shown in FIG. 3, the communication device 300 in a wireless communication system may be utilized to realize the UEs (or ATs) 116, 122 of FIG. 1, and the wireless communication system is preferred. Is an LTE system. The communication device 300 includes an input device 302, an output device 304, a control circuit 306, a central processing unit (CPU) 308, a memory 310, a program code 312, and a transceiver 314. ) May be included. The control circuit 306 executes the program code 312 in the memory 310 through the CPU 308, thereby controlling the operation of the communication device 300. The communication device 300 may receive a signal through an input device 302 such as a keyboard or a keypad by a user, and output images and sounds through an output device 304 such as a monitor or speakers. Can be. The transceiver 314 is used to receive and transmit wireless signals, deliver the received signals to the control circuit 306, and wirelessly output the signals generated by the control circuit 306.

4 is a simplified block diagram of the program code 312 shown in FIG. 3 in accordance with an embodiment of the present invention. In this embodiment, the program code 312 includes an application layer 400, a layer 3 portion 402, and a layer 2 portion 404, and is coupled to the layer 1 portion 406. The layer 3 portion 402 typically performs radio source control. The layer 2 portion 404 normally performs link control. The layer 1 portion 406 generally performs physical connections.

As described in 3GPP RP-110451, a Work Item (WI) for LTE carrier aggregation (CA) enhancement was agreed at the RAN # 51 meeting. The two purposes of the WI are as follows:

(i) support the use of multiple timing advances in case of LTE uplink carrier aggregation; And

(ii) Support for inter-band carrier aggregation for Time Division Duplex (TDD) Downlink (TDD) and UL (Uplink) including different uplink-downlink configurations in different bands .

As described in 3GPP TS 36.211, the subframe structures of TDD uplink-downlink settings are shown as in the table below.

[Table 1]

In Table 1 above, for each subframe of the radio frame, "D" indicates that the subframe is reserved for downlink transmissions, "U" indicates that the subframe is reserved for uplink transmissions, And "S" represents a special subframe with three fields, Downlink Pilot Time Slot (DwPTS), Guard Period (GP), and Uplink Pilot Time Slot (UpPTS).

Furthermore, section 3.1 of TS 36.321 describes discontinuous reception (DRX operation) as follows:

- Active Time (Active Time) is the time associated with the DRX operation, UE during that time monitors the PDCCH within the sub-frame PDCCH-.

drx-InactivityTimer specifies the number of consecutive PDCCH - subframe (s) after successfully decoding the PDCCH, indicating an initial UL or DL user data transmission for this UE.

drx-RetransmissionTimer defines the maximum number of consecutive PDCCH-subframe (s) as soon as DL retransmission is expected by the UE.

onDurationTimer specifies the number of consecutive PDCCH-subframe (s) at the beginning of the DRX cycle.

-PDCCH-subframe consists of a subframe having a Physical Downlink Control Channel (PDCCH) or a subframe having a Reverse Packet Data Control Channel (R-PDCCH), and has a R-PDCCH not stopped. Reference is made to the subframe for Node). For FDD UE operation, this means any subframe; For TDD, only subframes and downlink subframes including a downlink pilot time slot (DwPTS). For RNs configured to communicate with the E-UTRAN with an RN subframe setup configured and not suspended, this represents all downlink subframes configured for RN communication with the E-UTRAN.

The application of US Provisional Patent Application Serial No. 61 / 483,487 and the application of US Patent Application Serial No. 13 / 464,472 focus on issues related to DRX timers when different TDD UL-DL settings are aggregated in a UE. In general, this issue concerns the definition of consecutive PDCCH-subframes for DRX timers (eg, onDurationTimer , drx-InactivityTimer , and drx-RetransmissionTimer ). These applications propose several methods for defining consecutive PDCCH-subframes of a DRX timer when only one DRX configuration is being applied for a CA. The proposed methods did not consider the activation / deactivation state of the SCell.

According to TS 36.321, in some cases, the UE will not be scheduled in the PDCCH subframes of the deactivated SCell unless there is any other activated cell with PDCCH subframes that overlap with the PDCCH subframes of the deactivated SCell. In reference to the TDD UL-DL configuration when defining the consecutive PDCCH-subframes for the DRX timer may not be suitable. Therefore, taking into account the TDD UL-DL configuration of the deactivated SCell may reduce scheduling opportunities for the UE, since the DRX timer decreases during PDCH subframes of the deactivated SCell, such a PDCCH subframe They cannot be scheduled especially in the case of the drx-InactivityTimer . Perhaps no such concern exists for onDurationTimer and drx-RetransmissionTimer .

As described in TS 36.321, the drx-InactivityTimer generally defines the number of consecutive PDDCH-subframes that the UE needs to monitor after successfully decoding the PDCCH, thereby initial UL or DL user for the UE. Indicates data transfer. And it can be foreseen that the eNB will be able to schedule the UE within any PDCCH subframe of any activated serving cell configured with PDCCH. So, it would be reasonable to consider the TDD UL-DL settings of all activated serving cells with PDCCH when defining successive PDCH substreams for the drx-InactivityTimer .

Moreover, as described in TS 36.321, the main purpose of onDurationTimer is generally for the UE to periodically monitor the PDDCH so that the eNB can start DL transmission after some period of inactivity. To achieve this goal, it would be sufficient if onDurationTimer is defined based on the PCD 's TDD UL-DL configuration. Most of the time, only the PCell will be active. So this method is simple and sufficient. A potential concern is that the eNB may not be able to transmit PDCCH transmissions over the activated SCell during the On_Duration interval.

Because there is one drx-RetransmissionTimer per HARQ process and because different serving cells own different HARQ processes (as described in TS 36.321), the drx-RetransmissionTimer sets the TDD UL-DL of the corresponding serving cell or It would be reasonable to refer to the scheduling cell of the corresponding serving cell. Moreover, it may be better to stop the drx-RetransmissionTimer when the corresponding serving cell or scheduling cell of the corresponding serving cell is deactivated.

5 illustrates a flowchart 500 in accordance with an embodiment of the present invention. At step 505, the UE is connected to a PCell. In one embodiment, the PCell is always active. In step 510, the UE is configured with one or more SCells. These SCells include at least one SCell inactive. Furthermore, the TDD UL-DL settings of the connected PCell and the configured SCell may be different. In one embodiment, the SCell (s) may be activated or deactivated via an Activation / Deactivation Medium Access Control (MAC) control element (CE).

Returning to FIG. 5, at step 515, the TDD UL-DL configuration (s) of the activated serving cell (s) are considered in defining successive PDCCH subframes of drx-InactivityTimer . However, the TDD UL-DL configuration (s) of the deactivated serving cell (s) are not taken into account. In one embodiment, the activated serving cell (s) taken into account in defining successive PDCCH subframes of the drx-InactivityTimer is configured using PDCCH. Moreover, the PDCCH subframes for defining the drx-InactivityTimer are the same as the union of PDDCH subframes of all activated serving cells. In addition, the continuous PDCCH sub-frame of the drx-InactivityTimer may be defined on the basis of the scheduling cell of a serving cell reserved HARQ process associated with the or the drx-InactivityTimer based on the TDD UL-DL set in the serving cell . Moreover, the drx-InactivityTimer is stopped when the corresponding SCell of the corresponding scheduling cell is deactivated. In addition, consecutive PDCCH subframes of onDurationTimer may be defined based on the TDD UL-DL configuration of the connected PCell .

3 and 4 again, the UE 300 includes program code 312 stored in the memory 310. In one embodiment, the CPU 308 may execute the program code 312 so that (i) connect the UE to a PCell (Primary Serving Cell) and (ii) connect the UE. Set using at least one Scell (Secondary Serving Cell), at least one of the SCells is deactivated, in this case TDD UL-DL (Uplink-Downlink) of the PCell and at least one SCell The settings may differ from each other, and (iii) consider the TDD UL-DL configuration of the active serving cell, and define the deactivated serving cell to define consecutive Physical Downlink Control Channel (PDCCH) subframes of the drx-InactivityTimer . The TDD UL-DL configuration of is not taken into account.

In addition, the CPU 308 may execute the program code 312 to perform all of the operations and steps described above and others described herein.

Various aspects of the disclosure have been described above. The teachings herein may be embodied in a wide variety of forms and it should be apparent that any particular structure, function, or both disclosed herein is merely representative. Based on the teachings herein, one of ordinary skill in the art will appreciate that the aspects disclosed herein may be embodied independently of any other aspects and that two or more of these aspects may vary in various ways. It should be understood that they may be combined into ones. For example, an apparatus may be implemented or a method may be practiced using many of the aspects set forth herein. In addition, such an apparatus may be implemented or such a method may be practiced in addition to or using one or more of the features set forth herein or using other structure, functionality, or structure and functionality than those features. There will be. As some of the concepts above, in some aspects concurrent channels may be established based on pulse repetition frequencies. In some aspects concurrent channels may be established based on pulse position or offsets. In some aspects concurrent channels may be established based on time hopping sequences. In some aspects concurrent channels may be established based on pulse repetition frequencies, pulse positions or offsets, and time hopping sequences.

Those skilled in the art will understand that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description above may be voltages, currents, electromagnetic waveforms, magnetic fields, or magnetic particle detection. Magnetic particles, optical fields or optical particles, or any combination thereof.

Those skilled in the art will appreciate that the various illustrative logical blocks, modules, processors, means, circuits, and algorithm steps described in connection with the aspects disclosed herein may be electronic hardware. (Eg, a digital implementation, an analog implementation, or a combination of the two) that can be designed using source coding or some other technique, or a program or design code incorporating instructions (herein referred to herein as " software " Or may be referred to as a “software module”) or a combination of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the constraints of the particular application and design imposed on the overall system. Skilled designers may implement the functionality described above in varying ways for each particular application, but determining such an implementation should not be interpreted as causing a departure from the scope of the present disclosure.

In addition, the various illustrative logical blocks, modules, and circuits described in connection with the aspects disclosed herein may be implemented in or performed by integrated circuits (“IC”), an access terminal, or an access point. Could be. The IC may be a general purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, designed to perform the functions described herein, May include discrete hardware components, electrical components, optical components, mechanical components, or any combination thereof, and codes or instructions present within the IC, outside the IC, or both. Will be able to run them. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or some other such configuration.

It will be understood that any particular order or hierarchy of steps in any disclosed process is an example of an example approach. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged while remaining within the scope of the present disclosure. The accompanying method presents the elements of the various steps in a sample order, and is not meant to be limited to that particular order or hierarchy presented.

The steps of a method or algorithm described in connection with the aspects disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. Software modules (including, for example, executable instructions and associated data) and other data include RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disks, removable disks, CD-ROMs. Or in any other form of computer-readable storage media known in the art. The sample storage medium may be connected to a machine such as, for example, a computer / processor (which may be referred to herein as a "processor" for convenience) so that the processor retrieves information (eg, code) from the storage medium. Make it readable and write information to the storage medium. The storage medium of the sample may be integrated into the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in user equipment. In the alternative, the processor and the storage medium may reside as discrete components in user equipment. Moreover, in some aspects, any suitable computer-program product may comprise a computer-readable medium containing codes related to one or more aspects of the disclosure. Some aspects of computer program products may include packaging materials.

Although the present invention has been described in conjunction with various aspects, it will be understood that further modifications may be made to the invention. Such application generally follows the principles of the present invention and incorporates certain variations, uses, and adaptations of the present invention, including those so departing from the present disclosure as come from known and customary practice within the technical field to which the present invention pertains. It is intended to cover.

The invention can be used in the telecommunications related field, in particular in wireless communication networks. More specifically, the present invention can be used to improve inter-band carrier aggregation (CA) in time division duplex (TDD) mode.

Claims (20)

An inter-band carrier aggregation method in a user equipment (UE) in a time division duplex (TDD) mode,
Connecting the UE to a PCell (Primary Serving Cell);
Configuring the UE using at least one secondary serving cell (Scell), wherein at least one scell is deactivated, and the TDD UL-DL (Uplink-Downlink) of the PCell and at least one SCell A setting step, wherein the settings may be different; And
To define contiguous Physical Downlink Control Channel (PDCCH) subframes of drx-InactivityTimer , consider the TDD UL-DL configuration of the active serving cell, and not the TDD UL-DL configuration of the deactivated serving cell. Including, the inter-band carrier aggregation method. The method of claim 1,
The PDCCH subframes for defining the drx-InactivityTimer are the same as the union of the PDCCH subframes of all activated serving selves. The method of claim 1,
The activated serving cell considered for defining successive PDCCH subframes of the drx-InactivityTimer is configured using a PDCCH. The method of claim 1, wherein
And defining contiguous PDCCH subframes of onDurationTimer based on the TDD UL-DL configuration of the PCell . The method of claim 1, wherein
band carrier aggregation method - drx-RetransmissionTimer to and based on the TDD UL-DL configuration for the serving cell reserved HARQ process associated drx-RetransmissionTimer consecutive PDCCH, inter further comprising the step of defining a sub-frame. The method of claim 1, wherein
Due to drx-RetransmissionTimer and based on the TDD UL-DL set in the scheduling cell of a serving cell reserved HARQ process associated with the drx-RetransmissionTimer consecutive PDCCH further comprising the step of defining a sub-frame of the inter-band carrier aggregation method . The method of claim 5,
Wherein the drx-RetransmissionTimer is stopped when the corresponding SCell is deactivated. The method according to claim 6,
Wherein the drx-RetransmissionTimer is stopped when the corresponding scheduling cell is deactivated. The method of claim 1,
Wherein the PCell is always considered active. The method of claim 1,
The SCell is an inter-band carrier aggregation method that can be activated or deactivated via an Activation / Deactivation Medium Access Control (MAC) control element (CE). A communication device for inter-band carrier aggregation in a user equipment (UE) in a time division duplex (TDD) mode,
A control circuit;
A processor installed in the control circuit; And
A memory installed in the control circuit and coupled to the processor;
The processor,
Connecting the UE to a PCell (Primary Serving Cell);
Configuring the UE using at least one secondary serving cell (Scell), wherein at least one scell is deactivated, and the TDD UL-DL (Uplink-Downlink) of the PCell and at least one SCell A setting step, wherein the settings may be different; And
To define contiguous Physical Downlink Control Channel (PDCCH) subframes of drx-InactivityTimer , consider the TDD UL-DL configuration of the active serving cell, and not the TDD UL-DL configuration of the deactivated serving cell. ;
And execute program code stored in a memory for inter-band carrier aggregation by means of. The method of claim 11,
The PDCCH subframes for defining the drx-InactivityTimer are the same as the union of the PDCCH subframes of all activated serving selves. The method of claim 11,
And the activated serving cell considered for defining successive PDCCH subframes of the drx-InactivityTimer is configured using PDCCH. The method of claim 11, wherein the communication device,
And defining contiguous PDCCH subframes of onDurationTimer based on the TDD UL-DL configuration of the PCell . The method of claim 11, wherein the communication device,
Due to drx-RetransmissionTimer and based on the TDD UL-DL configuration for the serving cell reserved HARQ process associated further comprising defining consecutive PDCCH-subframe of drx RetransmissionTimer, communication device. The method of claim 11, wherein the communication device,
Due to drx-RetransmissionTimer and based on the TDD UL-DL set in the scheduling cell of a serving cell reserved HARQ process associated with a communication device further comprising: defining successive sub-frame of the PDCCH drx-RetransmissionTimer. 16. The method of claim 15,
Wherein the drx-RetransmissionTimer is stopped when the corresponding SCell is deactivated. 17. The method of claim 16,
Wherein the drx-RetransmissionTimer is stopped when the corresponding scheduling cell is deactivated. The method of claim 11,
The PCell is always considered to be active. The method of claim 11,
The SCell may be activated or deactivated via an Activation / Deactivation Medium Access Control (MAC) control element (CE).

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