KR20150012985A - Methods of controlling carrier aggregation and apparatuses thereof - Google Patents
Methods of controlling carrier aggregation and apparatuses thereof Download PDFInfo
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- KR20150012985A KR20150012985A KR1020140005630A KR20140005630A KR20150012985A KR 20150012985 A KR20150012985 A KR 20150012985A KR 1020140005630 A KR1020140005630 A KR 1020140005630A KR 20140005630 A KR20140005630 A KR 20140005630A KR 20150012985 A KR20150012985 A KR 20150012985A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2603—Arrangements for wireless physical layer control
Abstract
The present invention relates to a method and apparatus for controlling carrier merging in a different duplex mode, and a method for a base station to control carrier merging by a base station under a different duplex mode according to an embodiment of the present invention includes a first Pcell Setting a carrier of one of two or more carriers operating in a second duplex mode different from the first duplex mode of the Pcell to a second Pcell and receiving an uplink control channel from the terminal according to the duplex mode of each Pcell .
Description
The present invention proposes a method and apparatus for controlling the merging of carriers under different circumstances, wherein the duplex mode of two or more cells is set to FDD (Frequency Division Duplex) and TDD (Time Division Duplex), respectively.
As communications systems evolved, consumers, such as businesses and individuals, used a wide variety of wireless terminals. The current mobile communication system such as LTE (Long Term Evolution) and LTE-Advanced of the 3GPP series is a high-speed and large-capacity communication system capable of transmitting and receiving various data such as video and wireless data beyond voice- It is required to develop a technique capable of transmitting large-capacity data in accordance with the above-described method. On the other hand, there is a need for techniques and methods that enable carrier merging to be applicable in various deployment scenarios as deployments such as multiple cells or small cells are introduced. Further, there is a need for a technique that supports joint operation and carrier merging in which a duplex mode of two or more cells is set to FDD and TDD, respectively, to perform transmission and reception in a plurality of base stations or heterogeneous networks under different circumstances.
The present invention relates to a method for establishing a cell to perform joint operation and carrier merging for a base station and a terminal performing transmission and reception in a plurality of base stations or heterogeneous networks under a situation where duplex modes of two or more cells are set to FDD and TDD, do. When the duplex mode of two or more cells is different from each other, a carrier merging and a joint operation are performed to perform scheduling by merging carriers, thereby improving communication efficiency.
In order to solve the above-mentioned problems, a method for a base station to control carrier merging in a different duplex mode according to an embodiment of the present invention uses a Pcell, which is one of the carriers of the first duplex mode, Performing carrier merging in a first duplex mode adding another carrier to the Scell, adding a carrier to the other carrier using one carrier having the function of Pcell among the carriers in the second duplex mode, And transmitting and receiving a downlink channel and an uplink channel in the first duplex mode and the second duplex mode according to a setting of a Pcell and a Scell in each of the first duplex mode and the second duplex mode, .
A method for controlling carrier merging by a base station in a different duplex mode according to another embodiment of the present invention is characterized in that when one of the carriers of the first duplex mode is a Pcell of the terminal, the carrier of the first duplex mode or the carrier of the second duplex mode Adding a carrier to the Scell, and receiving an uplink control channel from the terminal according to the first duplex mode of the Pcell.
A method for setting up carrier merging by a UE under different duplex modes according to another embodiment of the present invention includes the steps of adding a carrier to another carrier using a Pcell, which is one of the carriers of the first duplex mode, 1 duplex mode, to perform carrier merging in a second base station that adds another carrier to the Scell using one carrier of the function of the Pcell among the carriers of the second duplex mode And transmitting and receiving the downlink channel and the uplink channel of the first duplex mode and the second duplex mode according to the setting of the Pcell and the Scell of the first duplex mode and the second duplex mode, respectively.
A method of setting up carrier merging to a UE under different duplex modes according to another embodiment of the present invention is characterized in that when the predetermined Pcell is in the first duplex mode, another carrier of the first duplex mode or a carrier of the second duplex mode is called a Scell , And transmitting the uplink control channel to the device station in accordance with the first duplex mode of the Pcell.
A BS for controlling carrier merging under different duplex modes according to another embodiment of the present invention includes a first duplex mode in which another carrier is added to a Scell using Pcell which is a carrier of a first duplex mode carrier connected to the UE, And performs carrier merging in a second base station that adds another carrier to the Scell using one carrier having the function of the Pcell among the carriers of the second duplex mode, the first duplex mode and the second duplex mode, A transmitter for transmitting the downlink channel of the first duplex mode and the second duplex mode according to the setting of the Pcell and the Scell of each of the second duplex mode, and a transmitter for transmitting the downlink channel of the first duplex mode and the second duplex mode, And a receiving unit for receiving the data.
A BS for controlling carrier merging in a different duplex mode according to another embodiment of the present invention includes: a transmitter for transmitting a signal to a UE; when one of the carriers in the first duplex mode is a Pcell of the UE, And a receiver for receiving an uplink control channel from the UE according to the first duplex mode of the Pcell.
A UE set to perform carrier merging under a different duplex mode according to another embodiment of the present invention may use a Pcell as a carrier of one of the first duplex mode carriers connected to the UE, 1 duplex mode and performs carrier merging in a second base station that adds another carrier to the Scell using one carrier having the function of Pcell among the carriers of the second duplex mode, A receiver for receiving the downlink channels of the first duplex mode and the second duplex mode according to the settings of the Pcell and the Scell of the first duplex mode and the second duplex mode, And a transmitter for transmitting the uplink channel.
The UE set to perform carrier merging under different duplex modes according to another embodiment of the present invention may set the carrier of the first duplex mode or the carrier of the second duplex mode to Scell when the predetermined Pcell is in the first duplex mode And a transmitter for transmitting an uplink control channel to an equipment station in accordance with the first duplex mode of the Pcell.
When implementing the present invention, Pcell may be set up in different duplexes to perform joint operations and carrier merging in different duplex modes. Carrier merging between carriers having different duplex modes can be performed, and joint operation and carrier merging can be performed to improve communication efficiency.
1 is a view showing a small cell development according to an embodiment.
2 is a diagram showing a small cell deployment scenario.
3 to 6 are diagrams showing detailed scenarios in the small cell deployment.
Figure 7 is a diagram showing various scenarios of carrier merging.
8 is a diagram illustrating an operation of a base station according to an embodiment of the present invention.
9 is a
10 is a view showing a second embodiment according to an embodiment of the present invention.
11 is a view showing Embodiment 3 according to an embodiment of the present invention.
12 is a diagram illustrating an operation of a base station when the first embodiment of the present invention is applied.
13 is a diagram illustrating operations of a base station when the second and third embodiments of the present invention are applied.
14 is a diagram illustrating an operation of a terminal according to an embodiment of the present invention.
FIG. 15 is a diagram illustrating an operation of a terminal when the first embodiment of the present invention is applied.
16 is a diagram showing operations of a terminal when the second and third embodiments of the present invention are applied.
17 is a diagram illustrating a configuration of a base station according to an embodiment of the present invention.
18 is a diagram illustrating a configuration of a user terminal according to another embodiment.
FIG.
Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
The wireless communication system in the present invention is widely deployed to provide various communication services such as voice, packet data and the like. A wireless communication system includes a user equipment (UE) and a base station (BS, or eNB). The user terminal in this specification is a comprehensive concept of a terminal in wireless communication. It is a comprehensive concept which means a mobile station (MS), a user terminal (UT), an SS (User Equipment) (Subscriber Station), a wireless device, and the like. Hereinafter, the user terminal may be referred to as a terminal in the present specification. Hereinafter, the user terminal may be referred to as a terminal in the present specification.
A base station or a cell generally refers to a station that communicates with a user terminal and includes a Node-B, an evolved Node-B (eNB), a sector, a Site, a BTS A base transceiver system, an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and a small cell.
In this specification, a base station or a cell is interpreted as a comprehensive meaning indicating a part or function covered by BSC (Base Station Controller) in CDMA, Node-B in WCDMA, eNB in LTE or sector (site) And covers various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node, RRH, RU, and small cell communication range.
Since the various cells listed above exist in the base station controlling each cell, the base station can be interpreted into two meanings. i) a device itself providing a megacell, a macrocell, a microcell, a picocell, a femtocell, or a small cell in relation to a wireless region, or ii) the wireless region itself. i indicate to the base station all devices that are controlled by the same entity or that interact to configure the wireless region as a collaboration. An eNB, an RRH, an antenna, an RU, an LPN, a point, a transmission / reception point, a transmission point, a reception point, and the like are exemplary embodiments of a base station according to a configuration method of a radio area. ii) may indicate to the base station the wireless region itself that is to receive or transmit signals from the perspective of the user terminal or from a neighboring base station.
Therefore, a base station is collectively referred to as a megacell, a macrocell, a microcell, a picocell, a femtocell, a small cell, an RRH, an antenna, an RU, a low power node (LPN), a point, an eNB, Quot;
Herein, the user terminal and the base station are used in a broad sense as the two transmitting and receiving subjects used to implement the technical or technical idea described in this specification, and are not limited by a specific term or word. The user terminal and the base station are used in a broad sense as two (uplink or downlink) transmitting and receiving subjects used to implement the technology or technical idea described in the present invention, and are not limited by a specific term or word. Here, an uplink (UL, or uplink) means a method of transmitting / receiving data to / from a base station by a user terminal, and a downlink (DL or downlink) .
There are no restrictions on multiple access schemes applied to wireless communication systems. Various multiple access schemes such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), OFDM-FDMA, OFDM- Can be used. An embodiment of the present invention can be applied to asynchronous wireless communication that evolves into LTE and LTE-Advanced via GSM, WCDMA, and HSPA, and synchronous wireless communication that evolves into CDMA, CDMA-2000, and UMB. The present invention should not be construed as limited to or limited to a specific wireless communication field and should be construed as including all technical fields to which the idea of the present invention can be applied.
A TDD (Time Division Duplex) scheme in which uplink and downlink transmissions are transmitted using different time periods, or an FDD (Frequency Division Duplex) scheme in which they are transmitted using different frequencies can be used.
In systems such as LTE and LTE-Advanced, the uplink and downlink are configured on the basis of one carrier or carrier pair to form a standard. The uplink and the downlink are divided into a Physical Downlink Control Channel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel, a Physical Uplink Control CHannel (PUCCH), an Enhanced Physical Downlink Control Channel (EPDCCH) Transmits control information through the same control channel, and is configured with data channels such as PDSCH (Physical Downlink Shared CHannel) and PUSCH (Physical Uplink Shared CHannel), and transmits data.
On the other hand, control information can also be transmitted using EPDCCH (enhanced PDCCH or extended PDCCH).
In this specification, a cell refers to a component carrier having a coverage of a signal transmitted from a transmission point or a transmission point or transmission / reception point of a signal transmitted from a transmission / reception point, and a transmission / reception point itself .
The wireless communication system to which the embodiments are applied may be a coordinated multi-point transmission / reception system (CoMP system) or a coordinated multi-point transmission / reception system in which two or more transmission / reception points cooperatively transmit signals. antenna transmission system, or a cooperative multi-cell communication system. A CoMP system may include at least two multipoint transmit and receive points and terminals.
The multi-point transmission / reception point includes a base station or a macro cell (hereinafter referred to as 'eNB'), and at least one mobile station having a high transmission power or a low transmission power in a macro cell area, Lt; / RTI >
Hereinafter, a downlink refers to a communication or communication path from a multiplex transmission / reception point to a terminal, and an uplink refers to a communication or communication path from a terminal to a multiplex transmission / reception point. In the downlink, a transmitter may be a part of a multipoint transmission / reception point, and a receiver may be a part of a terminal. In the uplink, the transmitter may be a part of the terminal, and the receiver may be a part of multiple transmission / reception points.
Hereinafter, a situation in which a signal is transmitted / received through a channel such as PUCCH, PUSCH, PDCCH, EPDCCH, and PDSCH is expressed as 'PUCCH, PUSCH, PDCCH, EPDCCH and PDSCH are transmitted and received'.
In the following description, an indication that a PDCCH is transmitted or received or a signal is transmitted or received via a PDCCH may be used to mean transmitting or receiving an EPDCCH or transmitting or receiving a signal through an EPDCCH.
That is, the physical downlink control channel described below may mean a PDCCH, an EPDCCH, or a PDCCH and an EPDCCH.
Also, for convenience of description, EPDCCH, which is an embodiment of the present invention, may be applied to the portion described with PDCCH, and EPDCCH may be applied to the portion described with EPDCCH according to an embodiment of the present invention.
Meanwhile, the High Layer Signaling described below includes RRC signaling for transmitting RRC information including RRC parameters.
An eNB, which is an embodiment of a base station, performs downlink transmission to terminals. The eNB includes a physical downlink shared channel (PDSCH) as a main physical channel for unicast transmission, downlink control information such as scheduling required for reception of PDSCH, and uplink data channel A physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission in a Physical Uplink Shared Channel (PUSCH). Hereinafter, the transmission / reception of a signal through each channel will be described in a form in which the corresponding channel is transmitted / received.
The present invention is applicable to a terminal belonging to a base station in a case where a small cell and an arbitrary cell / base station / RRH / antenna / RU support different duplex modes, i.e., FDD and TDD, And more particularly, to a method and apparatus for operating a terminal and a base station method and apparatus using the same to enable joint operation and carrier aggregation between FDD and TDD.
The present invention provides a base station and a terminal operating method and apparatus for setting a Pcell in a case where a base station considers joint operation between FDD and TDD, which are different duplex modes, and carrier merging between FDD and TDD.
In a method of setting a Pcell by a UE according to an embodiment of the present invention, a joint operation between a duplex mode FDD and a TDD and a carrier aggregation of FDD and TDD from a base station receiving a downlink signal receiving a Pcell indication information considering carrier aggregation or a signal including information on a Pcell designation; And setting one Pcell in the FDD and TDD duplex modes or one Pcell for each of the FDD and TDD based on the received signal.
The present invention also relates to a mobile communication system and a mobile communication system, which are capable of performing Pcell / Pcell operation according to different duplex modes regardless of the duplex mode when carrier merging, joint operation, and dual connectivity are performed under different macrocells and small cell environments (or macro eNBs and small cell eNBs) Scell specification method and apparatus are provided.
Small cells using low power nodes are being considered as a means to cope with mobile traffic explosion. A low power node represents a node using lower transmit (Tx) power than a typical macro node.
In the Carrier Aggregation (CA) technology prior to 3GPP Release 11, a small cell could be constructed using a low power RRH (Remote Radio Head), which is a geographically dispersed antenna, in macro cell coverage.
However, in order to apply the CA technology described above, the macro cell and the RRH cell are configured to be scheduled under the control of one base station, and an ideal backhaul is required between the macro cell node and the RRH.
An ideal backhaul refers to a backhaul that exhibits very high throughput and very little delay, such as a dedicated point-to-point connection using optical fiber, LOS microwave (Line Of Sight microwave).
In contrast, a backhaul that exhibits relatively low throughput and large delay, such as Digital Subscriber Line (xDSL) and Non-LOS microwave, is called a non-ideal backhaul.
The plurality of serving cells may be merged through the single base station based CA technology described above to provide services to the terminal. That is, a plurality of serving cells may be configured for a terminal in a state of a radio resource control (RRC) connected state, and when an ideal backhaul is established between the macro cell node and the RRH, RRH cells together constitute serving cells to provide services to the UE.
When a single base station based CA technology is configured, the terminal may have only one RRC connection with the network.
Access Stratum (hereinafter referred to as 'NAS') mobility information (for example, TAI: Tracking) in one RRC connection establishment / re-establishment / Area Identity), and one serving cell provides a security input in RRC connection re-establishment / handover. These cells are called Pcell (Primary Cell). The Pcell can only be changed with the handover procedure. Depending on the terminal capabilities, Scells (Secondary Cells) can be configured as serving cells with the Pcell.
The following describes a small cell deployment scenario to which the proposals described in the present invention can be applied.
1 is a view showing a small cell development according to an embodiment.
FIG. 1 shows a configuration in which a small cell and a macro cell coexist. In FIGS. 2 to 3, the presence or absence of macro coverage, whether the small cell is for outdoor use or indoor use, , Whether the development of the small cell is sparse or dense, or whether the same frequency spectrum as the macro is used in terms of spectrum or not.
2 is a diagram showing a small cell deployment scenario. Figure 2 shows a typical representative configuration for the scenario of Figure 3; Fig. 2 shows a small cell deployment scenario and includes
3 to 6 are diagrams showing detailed scenarios in the small cell deployment.
Fig. 3 shows
The solid lines connecting the small cells in the
Fig. 4 shows the small cell deployment scenario # 2a. Scenario 2a is a deployment scenario in which small cells and macros use different frequency spectra in the presence of an overlaid macro, and is an outdoor small cell scenario. Both the
The solid lines connecting the small cells in the
5 shows the small cell deployment scenario # 2b. Scenario 2b is a deployment scenario in which the small cell and the macro use different frequency spectrum in the presence of the overlay macro and is an indoor small cell scenario. The
The solid lines connecting the small cells in the
6 shows the small cell deployment scenario # 3. Scenario 3 is an indoor small cell scenario with no coverage of macros. 612 indicates a small cell cluster. In addition, the small cells are all indoor and users are dispersed both indoors and outdoors.
The solid lines connecting the small cells in the
The frequencies F1 and F2 used in the various small cell scenarios of FIGS. 1 and 2 to 6 described above may be frequencies that support the same duplex mode, or F1 and F2 may have different duplex modes , For example, F1 may be considered to support FDD mode, F2 may be considered to support TDD mode, or vice versa.
Figure 7 is a diagram showing various scenarios of carrier merging.
As shown in FIG. 7, the F1 and F2 may be frequencies that support the same duplex mode under a carrier merging scenario, or F1 and F2 may support frequencies that support different duplex modes.
710, the F1 and F2 cells are co-located and overlaid under almost the same coverage. The two layers are scenarios that provide sufficient coverage and mobility, and can be aggregated between overlapping F1 and F2 cells.
720 is a scenario where F1 and F2 cells are co-located and overlaid, but coverage of F2 is smaller than F1. F1 has sufficient coverage, mobility support is based on F1 coverage, F2 is a scenario used to improve throughput, and it is possible to merge overlapping F1 and F2 cells.
730 is a scenario where F1 and F2 cells are co-located, while F2 antennas are directed to cell boundaries to increase cell edge throughput. Mobility support is performed based on F1 coverage, F1 has sufficient coverage, F2 is a scenario with provisional coverage holes, and F1 and F2 cells in the same eNB can be merged where coverage is overlapped. This is a scenario.
750 is a scenario similar to the scenario of 720 in which frequency selective repeaters are deployed for coverage expansion of one carrier. It is a scenario where F1 and F2 cells in the same eNB can be merged where coverage is overlapped.
In this specification, a terminal establishes an RRC connection with a terminal, terminates a base station or a S1-MME that provides a cell (e.g., a Pcell) serving as a reference for handover, configures a mobility A base station serving as a mobility anchor is described as a master base station or a first base station.
The master base station or the first base station may be a base station that provides macrocells and may be a base station that provides any small cell in the case of a double connection between small cells.
Meanwhile, a secondary base station or a second base station, which is distinguished from the master base station in the double connection environment and provides additional radio resources to the terminal, is described as a secondary base station or a second base station.
The first base station (master base station) and the second base station (secondary base station) may each provide at least one cell to the terminal, and the first base station and the second base station may be connected through the interface between the first base station and the second base station. have.
In addition, for ease of understanding, a cell associated with a first base station may be referred to as a macro cell, and a cell associated with a second base station may be referred to as a small cell. However, in the small cell cluster scenario described below, the cell associated with the first base station may also be described as a small cell.
The macrocell in the present invention may mean at least one or more cells and may be written in the meaning of representing the entire cell associated with the first base station. Also, a small cell may mean at least one or more cells, and may be written in the meaning of representing the entire cell associated with the second base station. However, in a specific scenario, such as a small cell cluster as described above, it may be a cell associated with the first base station, in which case the cell of the second base station may be described as another small cell or another small cell.
However, in the following description of the embodiment, for convenience of description, it is possible to associate a macro cell with a master base station or a first base station, and associate a small cell with a secondary base station or a second base station, but the present invention is not limited thereto, The present invention is also applicable to a situation where a base station or a second base station can be associated with a macro cell and a master base station or a first base station is associated with a small cell.
In the case of supporting carrier aggregation (CA), carrier merging is considered in each mode of FDD and TDD duplex mode, and carrier merging in the same mode as FDD and TDD is considered , Component carriers (component carriers, element carriers, or CCs) can be set to be distinguished as follows.
First, let's look at the primary cell (Pcell).
When the CA is configured, the UE has one RRC connection with the network and one serving cell is connected to the NAS mobility information (RRC) at the time of RRC connection establishment / re-establishment / (NAS mobility information), and one serving cell provides a security input upon RRC connection re-establishment / handover. These cells are referred to as primary cells Pcell. The carrier corresponding to the Pcell in the downlink is a downlink primary component carrier (DL PCC) and the uplink is an uplink primary component carrier (UL PCC).
The Pcell can be changed only to a handover procedure, and the Pcell is used for transmission of the PUCCH. Also, unlike Scells, Pcell can not be de-activated. Also, re-establishment is triggered when Pcell experiences RLF, and is not reset if Scell experiences RLF. NAS information is also obtained from Pcell.
Next, we will look at secondary cells (Scells).
Depending on the UE capability, the Scell (s) may be configured in the form of a set of serving cells with the Pcell. The carrier corresponding to the Scell in the downlink is a downlink secondary component carrier (DL SCC), and the carrier corresponding to the Scell in the uplink is an uplink secondary component carrier (UL SCC) to be.
A set of serving cells configured in one terminal always consists of one Pcell and one or more scells. The number of serving cells that can be configured depends on the aggregation capability of the terminal.
Reconfiguration and addition and removal of scells may be performed by the RRC and may be used in conjunction with the target Pcell at the time of intra-LTE handover within LTE. The RRC can reset, add, and remove scells. When adding a new Scell, dedicated RRC signaling is used to transmit all the required system information of the Scell. In a connected mode, a terminal does not need to obtain broadcasted system information directly from Scells.
FDD and TDD duplex modes are considered, and merge and joint operation between carriers having different duplex modes such as FDD and TDD to be proposed in the present invention are not considered . Therefore, the present invention proposes an operation method in a terminal and an operation method in a base station in consideration of a joint operation between FDD and TDD, which are different duplex modes, and a carrier merge between FDD and TDD.
In a case where a base station sets a joint operation between FDD and TDD and a carrier merging between FDD and TDD, which are different duplex modes, the operation method in the UE and the operation in the base station are performed in the existing duplex mode It is necessary to define the operation method of the terminal in the case, and the operation setting method for the terminal from the base station and the terminal apparatus and the base station apparatus related thereto are proposed.
The following embodiments of the present invention can be considered as to how to define / specify / set the Pcell in the TDD-FDD joint operation and the carrier merging.
Embodiment 1: Duplex dependent Pcell definition method
In this method, DLD control / data and UL control / data / transmission are performed for each of the FDD and TDD duplex modes, and the Pcell and Scells assigned to each duplex mode So as to follow the operation. This is also followed by the operation of the Pcell and the Scell transmitting the HARQ-ACK / NACK and UCI (uplink control information) as the feedback to the DL data according to the operation of the terminal and the base station according to the Pcell and Scell according to the respective duplex mode. It is defined. In the aspect of transmitting the PUCCH in the uplink under the merging of the carriers, the PUCCH defined for each duplex mode enables uplink control information to be transmitted using only the Pcell. In addition, even when the uplink control information is piggybacked to the PUSCH, it is possible to set rules for which component carriers, Pcell or Scell are to be transmitted. For example, if there is a PUSCH in the Pcell, the UCI is transmitted to the PUSCH of the Pcell. If there is no PUSCH in the Pcell and the PUSCH is in the Scell, the PUSCH in the Scell having the lowest index among the scell You can set it to send. Alternatively, when an aperiodic CSI request is designated from a base station, it may be configured to transmit UCI to a Pcell in the corresponding Pcell or Scell indicated by the UL grant indicating the aperiodic CSI request.
Also, in the case of carrying out the TDD-FDD joint operation and the carrier merging, both the transmission of the PUSCH and the transmission of the PDSCH and the PUSCH under the merging of carriers are performed under the control of the Pcell defined in the respective duplex mode, So that PDSCH and PUSCH can be transmitted.
In the first embodiment, the TDD-FDD joint operation and the UE operation according to the carrier merging and the base station setup are performed only in the FDD duplex mode under the CA (FDD duplex mode) by using the method of applying the carrier combination defined for each FDD or TDD duplex mode. mode only) and TDD duplex mode only under CA (TDD duplex mode only), it can be considered as a method for minimizing the influence on the operation of the legacy terminals. That is, since there is an operation as a Pcell according to the FDD and TDD duplex modes, the operation of the terminal and the operation of the base station can be performed independently of the duplex modes according to the operation of the Pcell and the Scell defined in the respective duplex modes. The TDD-FDD joint operation and the carrier merge can be performed while minimizing the influence on the operation of the legacy terminals.
However, in the case of performing the access procedure in this method, a method may be considered in which the access procedure is performed according to the setting of the Pcell so that the duplex mode in which the access is first performed is set preferentially . Examples of the access procedure include a cell search procedure, a random access procedure, a handover procedure, and the like. In this case, when the UE performs cell search, the access procedure follows the Pcell according to whether the synchronization channel used for the FDD carrier is preferentially detected or the synchronization channel used for the TDD carrier is preferentially detected .
Another method is to set a priority for a specific duplex mode. For example, when an LTE network is developed using an FDD carrier, and the FDD carrier supports sufficient coverage and mobility, the FDD carrier is preferentially If the LTE network is deployed using a TDD carrier, or if the TDD carrier has sufficient coverage and mobility support, the TDD carrier should be prioritized To perform an access procedure. This can solve the ambiguity between the terminal and the base station which may occur in the access procedure according to the setting of the Pcell between the different duplex modes.
Embodiment 2: A method of configuring one Pcell in a manner set in one duplex mode and configuring other component carriers using the same or different duplex mode as Scell
Even when a component carrier supporting the FDD and the TDD duplex mode is mixed, the setting of the Pcell and the scell according to the duplex mode of the FDD and the TDD can be set using the method used in the existing duplex mode. For example, it is a method of configuring one Pcell such that the carrier merging of FDDs only, and the carrier merging of TDDs only, and the remaining component carriers are composed of Scells. Detailed examples of such cases are as follows.
If one carrier supporting FDD is set to Pcell and the remaining carriers, that is, the carriers supporting TDD, or the carriers supporting FDD except the carrier set to Pcell, are composed of Scell, A-1, A- 2, A-3, A-4, and A-5.
Configuration A-1 {Pcell (FDD), Scell-0 (TDD)}
Configuration A-2 {Pcell (FDD), Scell-0 (TDD), Scell-1 (FDD or TDD)}
Configuration A-3 {Pcell (FDD), Scell-0 (FDD), Scell-1 (TDD), Scell-2 (FDD or TDD)
Configuration A-4 {Pcell (FDD), Scell-0 (TDD), Scell-1 (FDD), Scell-2 (FDD or TDD)
Scell-1 (FDD), Scell-1 (FDD), Scell-2 (FDD or TDD)
If one carrier supporting TDD is set to Pcell and carriers supporting TDD other than the carriers supporting FDD or carriers set to Pcell are composed of Scell, B-1, B-2, B-3, B-4, and B-5.
Configuration B-1 {Pcell (TDD), Scell-0 (FDD)}
Configuration B-2 {Pcell (TDD), Scell-0 (FDD), Scell-1 (TDD or FDD)}
Configuration B-3 {Pcell (TDD), Scell-0 (TDD), Scell-1 (FDD), Scell-2 (TDD or FDD)
Scell-1 (TDD), Scell-1 (TDD), Scell-2 (TDD or FDD)
Scell-1 (TDD), Scell-1 (TDD), Scell-2 (TDD or FDD)
In the case of using the method, a parameter for instructing to distinguish between the FDD and the TDD duplex mode can be explicitly added or a downlink carrier frequency implicitly indicated (for example, downlink carrier frequency (FDD) duplex or TDD duplex.
Embodiment 3: FDD Prioritized Pcell definition (FDD)
Embodiment 3 is a method of preferentially setting a component carrier supporting the FDD duplex mode to the Pcell in the TDD-FDD joint operation and the merging of carriers. On the other hand, assuming that the TDD is set to the Pcell in the priority order, it is necessary to transmit the PUSCH / PDSCH / PHICH / UCI according to the UL-DL subframe configuration set in the component carrier supporting the TDD duplex mode All of the timing needs to be defined. That is, it is necessary to set the timing for transmitting the PUSCH / PDSCH / PHICH / UCI between the FDD and the TDDs, which needs to be defined in advance regarding the timing relationship between each FDD and the TDD. On the other hand, when the FDD is set to the Pcell in the priority order as in the third embodiment, unlike the TDD in which the DL subframe and the UL subframe exist on the same carrier, the UL carrier is a frequency resource independent of the DL carrier in the FDD There is no need to change the legacy UEs because UCI transmission as a feedback transmission to the PDSCH transmitted in the TDD can be performed through the PUCCH or PUSCH in the UL subframe on the UL carrier used by the corresponding FDD. Therefore, compared to the method of defining / setting / designating the Pcell with TDD preferentially, the UE supporting the TDD-FDD joint operation and the carrier merge proposed in the third embodiment does not change the existing technology structure significantly, FDD joint operation and carrier merge can be supported only by a configuration that defines, sets, and designates Pcell with FDD as a priority when it operates under a network capable of joint operation and carrier merging.
8 is a diagram illustrating an operation of a base station according to an embodiment of the present invention. The base station controlling the setting of the Pcell under the different duplex mode sets one or more Pcells of the UE to which the carrier merging is applied to two or more carriers to one or more duplex modes of FDD or TDD (S810) The uplink control channel is received from the UE according to the uplink control channel (S820). Each embodiment will be described in detail as follows.
In the first embodiment, when the carrier of one of the carriers of the FDD is set to the first Pcell, the set state of the S810 may set the carrier of one of the carriers of the TDD other than the FDD to the second Pcell. Setting to the second Pcell means Scell, but setting to perform the function of the Pcell. Of course, one of the carriers of TDD may be set to the first Pcell and one of the carriers of the FDD may be set to the second Pcell. In this case, it is possible to receive the uplink control channel PUCCH in the carrier set to the first Pcell or the second Pcell in step S820.
Alternatively, if the uplink control information to be transmitted on the uplink control channel PUCCH is piggybacked to the PUSCH in step S820, a PUSCH including information to be transmitted on the PUCCH in the carrier set to the first Pcell or the second Pcell .
If there is no PUSCH in the first Pcell or the second Pcell, PUSCH is piggybacked to the PUSCH of the Scell of the lowest index scheduled to transmit the PUSCH out of the Scuples in the same duplex mode as the first Pcell or the second Pcell in step S820 And receive uplink control information. The first duplex mode may be FDD and the second duplex mode may be TDD, or conversely, the first duplex mode may be TDD and the second duplex mode may be FDD.
In the case of a UE supporting different duplex modes, the UE selects a synchronization channel used for a carrier of the first duplex mode or a synchronization channel used for a carrier of a second duplex mode, In the duplex mode, the carrier in the duplex mode is set to Pcell, and the UE and the base station can be configured to perform the access procedure, that is, the cell search procedure, the random access procedure, and the handover procedure. That is, in the case of the access procedure, the base station can set the carrier of the duplex mode in which the detection of the synchronization channel is performed first to the Pcell.
Alternatively, in setting the Pcell carrier that performs the access procedure of the UE supporting the different duplex mode, the priority may be set to a specific duplex mode to set the Pcell carrier performing the access procedure. That is, one of the FDD duplex mode and the TDD duplex mode may be set as a priority to set the Pcell carrier to perform the access procedure.
To apply the second embodiment, the Pcell is one, the duplex mode of the Pcell becomes the FDD or the TDD, and the carrier of the different duplex mode or the carrier which is the same as the duplex mode of the Pcell but not the Pcell is set to Scell . The second embodiment will be described in detail with reference to FIG.
In order to apply the third embodiment, the Pcell is one and the Pcell can be set to be a priority of the FDD carrier. The third embodiment will be described in detail with reference to FIG.
In FIG. 8, the setting of the Pcell may include the base station transmitting information indicating the Pcell to the terminal, or transmitting a signal including information on the Pcell designation.
9 is a
If the base station operates CC1, CC2, CC3 as an FDD carrier and CC4 and CC5 as TDD carriers (900), the FDD, TDD setting and its Pcell / Scell setting result of the
On the other hand, the terminal 3, which is a legacy terminal, preferentially sets the carrier of the FDD to the Pcell. That is, FDD-Pcell is set for CC3 and FDD-Scell is set for CC2.
10 is a view showing a second embodiment according to an embodiment of the present invention.
9, when the base station operates CC1, CC2, and CC3 as FDD carriers, and CC4 and CC5 as TDD carriers (operation 1000), the FDD and TDD settings of the
11 is a view showing Embodiment 3 according to an embodiment of the present invention.
9, when the base station operates CC1, CC2, and CC3 as FDD carriers, and CC4 and CC5 as TDD carriers (Operation 1100), both
In FIGS. 9 to 11, the
12 is a diagram illustrating an operation of a base station when the first embodiment of the present invention is applied.
The base station may perform a carrier merging in the first duplex mode in which another carrier is added to the Scell using Pcell which is one of the carriers of the first duplex mode connected to the terminal in order to control the merging of carriers under different duplex modes (S1210). In step S1220, the second base station that adds another carrier to the Scell using one carrier having the function of the Pcell among the carriers in the second duplex mode is performed (S1220). In step S1230, the BS transmits and receives downlink and uplink channels of the first duplex mode and the second duplex mode according to the setting of the Pcell and the Scell of the first duplex mode and the second duplex mode, respectively.
In addition, in step S1230 of transmitting and receiving the downlink channel and the uplink channel, when the PUCCH is received in the carrier having the Pcell function or when it is set to piggyback the uplink control information in the PUSCH, When there is a PUSCH in the carrier, the Pcell including the uplink control information is received from the corresponding Pcell, or when the PUSCH is not present in the carrier having the function of the Pcell, the PUSCH of the Scup in the first duplex mode or the second duplex mode is scheduled And transmitting the uplink control information through the corresponding PUSCH to the PUSCH of the Scell of the lowest index.
The UE selects a carrier of the duplex mode according to the duplex mode of the carrier to which the synchronization channel preferentially sensed among the synchronization channels used for the carrier of the first duplex mode or the carrier of the second duplex mode is transmitted, , So that the terminal and the base station can perform an access procedure such as a cell search procedure, a random access procedure, a handover procedure, and the like. That is, in the case of the access procedure, the base station can set the carrier of the duplex mode in which the detection of the synchronization channel is performed first to the Pcell.
Alternatively, in setting the Pcell carrier that performs the access procedure of the UE supporting the different duplex mode, the priority may be set to a specific duplex mode to set the Pcell carrier performing the access procedure. That is, one of the FDD duplex mode and the TDD duplex mode may be set as a priority to set the Pcell carrier to perform the access procedure.
13 is a diagram illustrating operations of a base station when the second and third embodiments of the present invention are applied.
If one of the carriers in the first duplex mode is a Pcell of the UE in order to control the carrier merging in a different duplex mode, the carrier of the first duplex mode or the carrier of the second duplex mode may be scaled (S1310), and receives an uplink control channel from the UE according to the first duplex mode of the Pcell (S1320).
In addition to the Scell of
As in the third embodiment, the Pcell can always be implemented as FDD. That is, the first duplex mode can be controlled by the base station to be FDD.
14 is a diagram illustrating an operation of a terminal according to an embodiment of the present invention.
In step S1410, the UE performs carrier merging using one or more Pcells set in a duplex mode of FDD or TDD in step S1410. In step S1410, the UE performs downlink The control channel is transmitted (S1420).
In Fig. 14, the setting of the Pcell may include receiving information indicating the Pcell from the base station, or receiving a signal including information about the Pcell designation.
According to the
In step S1420, the UE transmits an uplink control channel (PUCCH) including the uplink control information in the first Pcell or the second Pcell, or transmits the uplink control channel PUCCH in which the UE piggybacks the uplink control information to the PUSCH If there is a PUSCH in a carrier having a Pcell function, the mobile station transmits a PUSCH including uplink control information in the Pcell, or if the PUSCH does not exist in the first Pcell or the second Pcell, PUSCH of the same Scuple in the duplex mode as the first Pcell or the second Pcell is piggybacked to the Scheduled PUSCH of the scaled lowest index and transmits the uplink control information.
The UE selects a carrier of the duplex mode according to the duplex mode of the carrier to which the synchronization channel preferentially sensed among the synchronization channels used for the carrier of the first duplex mode or the carrier of the second duplex mode is transmitted, To allow the terminal and the base station to perform an access procedure, i.e., a cell search procedure, a random access procedure, a handover procedure, and the like.
On the other hand, in a Pcell carrier configured to have a priority for a specific duplex mode by a base station in establishing a Pcell carrier that performs an access procedure, a terminal supporting different duplex modes performs an access procedure. That is, the UE performs the access procedure according to the FDD duplex mode or the TDD duplex mode set by the base station in a priority order.
The
According to the
According to the third embodiment, the Pcell is one and the Pcell is set to the FDD in priority. The third embodiment is as shown in FIG.
Operations in the terminal are summarized in the first embodiment and the second and third embodiments are as shown in Fig. 15 and Fig.
FIG. 15 is a diagram illustrating an operation of a terminal when the first embodiment of the present invention is applied.
In a first duplex mode in which a mobile station adds another carrier to a Scell using Pcell as a carrier of one of the first duplex mode carriers connected to the mobile station in a different duplex mode, Carrier merging is performed (S1510), and carrier merging is performed at a second base station that adds another carrier to the Scell using one carrier having the function of Pcell among the carriers of the second duplex mode (S1520). In step S1530, the BS transmits and receives downlink and uplink channels of the first duplex mode and the second duplex mode according to the Pcell and Scell of the first duplex mode and the second duplex mode, respectively.
In step S1530, if the PUCCH is transmitted in the carrier having the Pcell function or is set to piggyback the uplink control information in the PUSCH, if there is a PUSCH in the carrier having the Pcell function, When the PUSCH including the link control information is received, or when there is no PUSCH in the carrier having the function of the Pcell, the PUSCH of the first duplex mode or the second duplex mode is piggybacked to the PUSCH of the Scell of the lowest scheduled index And transmitting the uplink control information through the PUSCH.
The UE selects a carrier of the duplex mode according to the duplex mode of the carrier to which the synchronization channel preferentially sensed among the synchronization channels used for the carrier of the first duplex mode or the carrier of the second duplex mode is transmitted, , So that the terminal and the base station can perform an access procedure such as a cell search procedure, a random access procedure, a handover procedure, and the like. That is, in the case of the access procedure, the base station can set the carrier of the duplex mode in which the detection of the synchronization channel is performed first to the Pcell.
On the other hand, in a Pcell carrier configured to have a priority for a specific duplex mode by a base station in establishing a Pcell carrier that performs an access procedure, a terminal supporting different duplex modes performs an access procedure. That is, the UE performs the access procedure according to the FDD duplex mode or the TDD duplex mode set by the base station in a priority order.
16 is a diagram showing operations of a terminal when the second and third embodiments of the present invention are applied.
If the predetermined Pcell is in the first duplex mode, the UE performs carrier merging to add another carrier of the first duplex mode or a carrier of the second duplex mode to Scell (S1610). In step S1620, the UE transmits the uplink control channel to the BS in accordance with the first duplex mode of the Pcell.
In the second embodiment, since the duplex mode of the Pcell becomes FDD or TDD, the information including the duplex mode of the carrier can be received from the base station in step S1610 in which carrier merging for adding other carriers to the scell is performed.
On the other hand, Embodiment 3 can prioritize the carriers of the FDD to be Pcell, and in this case, the first duplex mode becomes FDD.
In the case of performing carrier merging using carriers having different TDD and FDD duplex modes, the behavior of the UE operating according to the Pcell configuration between the UE and the BS and the ambiguity between the UE and the BS regarding the configuration of the BS are resolved, The transmission and reception operations of the uplink / downlink control channel including the access procedure performed between the base stations and the uplink / downlink data transmission and the HARQ operation are accurately performed, thereby securing the reliability of data transmission between the terminal and the base station, Thereby increasing the data transmission rate of the uplink / downlink.
17 is a diagram illustrating a configuration of a base station according to an embodiment of the present invention.
17, a
The
In addition, the
The
The
The setting of the Pcell includes transmission of information indicating the Pcell to the terminal by the
According to the first embodiment, when the carrier of one of the carriers of the FDD is initially set to the first Pcell, the
In addition, the
Alternatively, the
Also, when the
The
In the case of applying the third embodiment, the
The configuration of the base station that controls the carrier merging under the different duplex modes will be described in more detail as follows.
The
In addition, in order to apply the piggyback rule, the
In the second and third embodiments, there is one Pcell. That is, when one of the carriers of the first duplex mode is a Pcell of the UE, the
The
As in the third embodiment, the Pcell can always be implemented as FDD. That is, the first duplex mode may be FDD.
18 is a diagram illustrating a configuration of a user terminal according to another embodiment.
18, a
The
In addition, the
The
The
Terminal 1800 sets the Pcell under different duplex modes to perform carrier merging. The
When the first embodiment is applied, the
The
Here, the
If there is no PUSCH in the first Pcell or the second Pcell, the PUSCH of the second duplex mode is piggybacked to the PUSCH of the Scell of the scaled lowest index to obtain uplink control information ).
Then, the
On the other hand, in a Pcell carrier configured to have a priority for a specific duplex mode by a base station in setting up a Pcell carrier that performs an access procedure, a terminal supporting different duplex modes performs an access procedure . That is, the
If the Pcell is set to FDD or TDD, the
As in the third embodiment, the Pcell is one, and the Pcell can be set to the FDD in priority.
The setting of the Pcell includes receiving information indicating that the terminal 1800 indicates the Pcell from the
In order for the UE to control the merging of carriers under different duplex modes, the
In
In the second embodiment, since the duplex mode of the Pcell becomes FDD or TDD, the
On the other hand, Embodiment 3 can prioritize the carriers of the FDD to be Pcell, and in this case, the first duplex mode becomes FDD.
The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.
Claims (28)
Performing carrier merging in a first duplex mode in which another carrier is added to the Scell using Pcell which is one of the carriers of the first duplex mode connected to the terminal;
Performing carrier merging at a second base station that adds another carrier to the Scell using one carrier having the function of Pcell among the carriers of the second duplex mode; And
And transmitting and receiving downlink and uplink channels of the first duplex mode and the second duplex mode according to the setting of the Pcell and the Scell of each of the first duplex mode and the second duplex mode.
The transmitting and receiving of the downlink channel and the uplink channel includes:
Receives a PUCCH from a carrier having the function of the Pcell,
When the uplink control information is set to be piggybacked to the PUSCH, if there is a PUSCH in the carrier having the Pcell function, the Pcell receives the uplink control information through the corresponding PUSCH,
If there is no PUSCH in the carrier having the Pcell function, piggybacking the PUSCH of the sculp of the first duplex mode or the second duplex mode to the Scuss PUSCH of the scaled lowest index and receiving the uplink control information through the corresponding PUSCH ≪ / RTI >
A carrier of the duplex mode is switched to a Pcell according to a duplex mode of a carrier to which a terminal is preferentially detected among a synchronization channel used for a carrier of the first duplex mode or a synchronization channel used for a carrier of a second duplex mode, ; And
And performing an access procedure at the Pcell.
Wherein the duplex mode in which the access procedure is performed is a duplex mode in which priority is set.
Adding another carrier of the first duplex mode or a carrier of the second duplex mode to the Scell if one of the carriers of the first duplex mode is a Pcell of the terminal; And
And receiving an uplink control channel from the UE according to the first duplex mode of the Pcell.
The step of adding the carrier to the Scell
And transmitting information including the duplex mode of the carrier to the terminal.
Wherein the first duplex mode is FDD.
Setting a carrier merging in a first duplex mode in which another carrier is added to a Scell using Pcell which is one carrier of the first duplex mode connected to the terminal;
Setting up to perform carrier merging in a second base station that adds another carrier to the Scell using one carrier having the function of the Pcell among the carriers of the second duplex mode; And
And transmitting and receiving downlink and uplink channels of the first duplex mode and the second duplex mode according to the setting of the Pcell and the Scell of each of the first duplex mode and the second duplex mode.
The transmitting and receiving step
A PUCCH may be transmitted from a carrier having the function of the Pcell,
When the uplink control information is set to be piggybacked to the PUSCH, if there is a PUSCH in a carrier having a Pcell function, the Pcell transmits uplink control information through the corresponding PUSCH,
If there is no PUSCH in the carrier having the function of Pcell, piggybacking the PUSCH of the sculp of the lowest index having the scheduled PUSCH out of the Scell of the first duplex mode or the second duplex mode and transmitting the uplink control information through the corresponding PUSCH ≪ / RTI >
The UE determines whether the synchronization channel used for the carrier of the first duplex mode or the carrier of the second duplex mode among the synchronization channels used for the carrier of the first duplex mode or the synchronization channel used for the carrier of the second duplex mode is the duplex mode Setting the carrier to Pcell; And
And performing an access procedure at the Pcell.
Wherein the duplex mode in which the access procedure is performed is a duplex mode in which priority is assigned.
Setting a carrier of a first duplex mode or a carrier of a second duplex mode to Scell to perform a carrier merge when the predetermined Pcell is in a first duplex mode; And
And transmitting an uplink control channel to the device station in accordance with the first duplex mode of the Pcell.
The step of performing the carrier merging
And receiving from the base station information comprising a duplex mode of the carrier.
Wherein the first duplex mode is FDD.
Performs carrier merging in a first duplex mode in which another carrier is added to a Scell using Pcell which is one of the carriers of the first duplex mode to which the UE is connected and performs carrier merging in the first duplex mode, A control unit that performs carrier merging in a second base station that adds another carrier to the Scell using one carrier;
A transmitter for transmitting downlink channels of the first duplex mode and the second duplex mode according to the settings of the Pcell and the Scell of the first duplex mode and the second duplex mode; And
And a receiver for receiving uplink channels of the first duplex mode and the second duplex mode.
The receiving unit
Receives a PUCCH from a carrier having the function of the Pcell,
When the uplink control information is set to be piggybacked to the PUSCH, if there is a PUSCH in the carrier having the Pcell function, the Pcell receives the uplink control information through the corresponding PUSCH,
When there is no PUSCH in the carrier having the function of Pcell, the PUSCH of the Scuple of the first duplex mode or the second duplex mode is piggybacked to the PUSCH of the Scell of the scaled lowest index to receive the uplink control information through the corresponding PUSCH Characterized in that the base station.
Wherein the control unit selects a carrier of the duplex mode according to the duplex mode of the carrier to which the synchronization channel preferentially sensed among the synchronization channels used for the carrier of the first duplex mode or the carrier of the second duplex mode is transmitted, And performs an access procedure in the Pcell.
Wherein the duplex mode in which the access procedure is performed is a duplex mode in which priority is set.
A transmitter for transmitting a signal to the terminal;
A control unit for adding another carrier of the first duplex mode or a carrier of the second duplex mode to the Scell when one of the carriers of the first duplex mode is a Pcell of the terminal; And
And a receiver for receiving an uplink control channel from the UE according to a first duplex mode of the Pcell.
To add the carrier to the Scell,
And the transmitter controls to transmit information including the duplex mode of the carrier to the mobile station.
Wherein the first duplex mode is FDD.
Performs carrier merging in a first duplex mode in which another carrier is added with a Scell using Pcell which is one of carriers of the first duplex mode connected to the UE and performs carrier merging in a first duplex mode, A second base station that adds another carrier to the Scell using one carrier having the first carrier;
According to the setting of the Pcell and Scell of each of the first duplex mode and the second duplex mode
A receiver for receiving downlink channels of the first duplex mode and the second duplex mode; And
And a transmitter for transmitting uplink channels of the first duplex mode and the second duplex mode.
The transmitting unit
A PUCCH may be transmitted from a carrier having the function of the Pcell,
When the uplink control information is set to be piggybacked to the PUSCH, if there is a PUSCH in a carrier having a Pcell function, the Pcell transmits uplink control information through the corresponding PUSCH,
When there is no PUSCH in the carrier having the function of Pcell, the PUSCH of the Scuple of the first duplex mode or the second duplex mode is piggybacked to the Scheduled PUSCH of the scaled lowest index to transmit the uplink control information through the corresponding PUSCH Terminal.
Wherein the control unit controls the duplex mode according to the duplex mode of the carrier to which the synchronization channel used for the carrier of the first duplex mode or the synchronization channel used for the carrier of the second duplex mode is transmitted, Sets the carrier to Pcell, and performs the access procedure in the Pcell.
Wherein the duplex mode in which the access procedure is performed is a duplex mode in which priority is given.
A control unit for performing carrier merging to add another carrier of the first duplex mode or a carrier of the second duplex mode to Scell when the predetermined Pcell is in the first duplex mode; And
And a transmitter for transmitting an uplink control channel to an equipment station in accordance with the first duplex mode of the Pcell.
The control unit may perform the carrier merging
And the receiver controls to receive information including the duplex mode of the carrier from the base station.
Wherein the first duplex mode is FDD.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2014/006701 WO2015012591A1 (en) | 2013-07-25 | 2014-07-23 | Method and apparatus for carrier aggregation |
| US14/897,230 US9832693B2 (en) | 2013-07-25 | 2014-07-23 | Method and apparatus for carrier aggregation |
| CN201480042115.5A CN105409137B (en) | 2013-07-25 | 2014-07-23 | It executes the method for carrier wave polymerization and executes the device of carrier wave polymerization |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20130088234 | 2013-07-25 | ||
| KR1020130088234 | 2013-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20150012985A true KR20150012985A (en) | 2015-02-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020140005630A KR20150012985A (en) | 2013-07-25 | 2014-01-16 | Methods of controlling carrier aggregation and apparatuses thereof |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20150012985A (en) |
-
2014
- 2014-01-16 KR KR1020140005630A patent/KR20150012985A/en not_active Application Discontinuation
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