WO2014107063A1 - 무선 통신 시스템에서 무선 자원 동적 변경에 기반한 신호 송수신 방법 및 이를 위한 장치 - Google Patents
무선 통신 시스템에서 무선 자원 동적 변경에 기반한 신호 송수신 방법 및 이를 위한 장치 Download PDFInfo
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- WO2014107063A1 WO2014107063A1 PCT/KR2014/000085 KR2014000085W WO2014107063A1 WO 2014107063 A1 WO2014107063 A1 WO 2014107063A1 KR 2014000085 W KR2014000085 W KR 2014000085W WO 2014107063 A1 WO2014107063 A1 WO 2014107063A1
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- uplink
- subframe
- downlink
- subframe configuration
- configuration information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
Definitions
- the present invention relates to a wireless communication system, and more particularly, to a method for transmitting and receiving a signal based on dynamic change of radio resources in a wireless communication system and an apparatus therefor.
- a 3GPP LTE (3rd Generation Partnership Project Long Term Evolution (LTE)) communication system will be described in brief.
- E-UMTS Evolved Universal Mobile Telecommunications System
- UMTS Evolved Universal Mobile Telecommunications System
- LTE Long Term Evolution
- an E-UMTS is an access gateway located at an end of a user equipment (UE) and a base station (eNode B), an eNB, and a network (E—UTRAN) and connected to an external network.
- UE user equipment
- eNode B base station
- E—UTRAN network
- a base station can transmit multiple data streams simultaneously for broadcast service, multicast service and / or unicast service.
- the cell is set to one of bandwidths such as 1.25, 2.5, 5, 10, 15, and 20 MHz to provide downlink or uplink transmission services to multiple terminals. Different cells may be configured to provide different bandwidths.
- the base station controls data transmission and reception for a plurality of terminals.
- For downlink (DL) data the base station transmits downlink scheduling information to inform the corresponding UE of time / frequency domain, encoding, data size, and HARQ Hybrid Automatic Repeat and reQuest (related information) related information.
- the base station transmits uplink scheduling information to uplink UL data for uplink (UL) data and informs the user equipment of the time / frequency domain, encoding, data size, HARQ related information, etc.
- the core network may be composed of an AG and a network node for user registration of the terminal.
- the AG manages the mobility of the UE in units of a TAOYacking Area composed of a plurality of cells.
- the present invention proposes a method for transmitting and receiving a signal based on a dynamic change of radio resources in a wireless communication system and an apparatus therefor.
- a method for a UE to transmit / receive a signal to / from a base station includes receiving reference subframe configuration information through system information and configuring an operation subframe through dynamic signaling. Receiving information; Receiving an uplink grant for transmission of an uplink signal in a downlink subframe defined by the operation subframe configuration information; Determining validity of a specific uplink subframe for transmitting the uplink signal indicated by the uplink grant; And when the specific uplink subframe is valid, transmitting the uplink signal to the base station. It is characterized by.
- the validity of the specific uplink subframe includes a predetermined operation of the reference subframe configuration information, the operation subframe configuration information, and subframe configuration information for downlink HARQ (Hybrid Automatic Repeat and reQuest). And determining based on the subframe configuration information.
- the subframe configuration information for the downlink HARQ is subframe configuration information defining a time point for transmitting HARQ AC / NACK (Acknowledgement / Negative-ACK) for a Physical Downlink Control Channel (PDSCH) received from the base station. It features.
- the step of determining the validity of the specific uplink subframe when the specific uplink subframe is defined as a downlink subframe in the predetermined operation subframe configuration information, the specific uplink And determining that the link subframe is invalid.
- the method may further include treating the uplink grant as a reception error when the specific uplink subframe is invalid.
- the specific uplink subframe is invalid, the uplink signal scheduled by the uplink grant is not transmitted.
- a terminal apparatus in a TDD communication system includes: a wireless communication module for transmitting and receiving a signal with a base station; And a processor for processing the signal, wherein the processor is configured to receive reference subframe configuration information through system information and receive operation subframe configuration information through dynamic signaling, and to define in the operation subframe configuration information.
- the wireless communication module is controlled to transmit the uplink signal to the base station.
- the processor, the reference subframe configuration information, The validity of the specific uplink subframe may be determined based on predetermined operation subframe configuration information among the operation subframe configuration information and the subframe configuration information for the downlink HARQ.
- the subframe configuration information for the downlink HARQ is subframe configuration information defining a time point for transmitting HARQ ACK / NACK (Acknowledgement / Negative-ACK) for the Physical Downlink Control Channel (PDSCH) received from the base station. It features.
- the processor may determine that the specific uplink subframe is invalid. have. In this case, when the specific uplink subframe is invalid, the processor controls the wireless communication modules to treat the uplink grant as a reception error and not to transmit the uplink signal scheduled by the uplink grant. It features.
- a terminal and a base station in a wireless communication system can efficiently transmit and receive signals while dynamically changing radio resources.
- FIG. 1 is a diagram schematically illustrating an ETS UMTS network structure as an example of a wireless communication system.
- FIG. 2 is a diagram illustrating a control plane and a user plane structure of a radio interface protocol between a UE and E—UTRAN based on the 3GPP radio access network standard.
- 3 is a diagram for explaining physical channels used in a 3GPP system and a general signal transmission method using the same.
- FIG. 4 illustrates a structure of a downlink radio frame used in an LTE system. Drawing.
- FIG. 5 is a diagram illustrating a structure of an uplink subframe used in an LTE system.
- FIG. 6 illustrates a structure of a radio frame in an LTE TDD system.
- FIG. 7 illustrates an example of performing a random access procedure according to an embodiment of the present invention.
- FIG. 8 shows another example of performing a random access procedure according to an embodiment of the present invention.
- FIG 9 shows an example of performing uplink transmission according to an embodiment of the present invention.
- FIG. 10 shows an example in which a UE discovers a mismatch in subframe usage according to an embodiment of the present invention.
- FIG. 11 illustrates a block diagram of a communication device according to an embodiment of the present invention.
- the present specification describes an embodiment of the present invention using an LTE system and an LTE-A system, but this is an example and the embodiment of the present invention can be applied to any communication system corresponding to the above definition.
- the present specification describes an embodiment of the present invention on the basis of the frequency division duplex (FDD) method, which is an exemplary embodiment of the present invention is a hybrid-FDD (H-FDD) method or a time division duplex (TDD). ) Can be easily modified and applied.
- FDD frequency division duplex
- H-FDD hybrid-FDD
- TDD time division duplex
- FIG. 2 is a diagram illustrating a control plane and a user plane structure of a radio interface protocol between a terminal and an E-UTRAN based on the 3GPP radio access network standard.
- the control plane refers to a path through which control messages used by a user equipment (UE) and a network to manage a call are transmitted.
- the user plane refers to a path through which data generated at an application layer, for example, voice data or Internet packet data, is transmitted.
- the physical layer which is the first layer, provides an information transfer service to an upper layer by using a physical channel.
- the physical layer is connected to the upper layer of the medium access control layer through a trans-antenna port channel. Data moves between the medium access control layer and the physical layer through the transport channel.
- the physical channel utilizes time and frequency as radio resources.
- the physical channel is modulated in the Orthogonal Frequency Division Multiple Access (0FDMA) scheme in downlink, and modulated in the Single Carrier Frequency Division Multiple Access (SC-FDMA) scheme in the uplink.
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the medium access control (MAC) layer of the second layer provides a service to a radio link control (RLC) link, which is a higher layer, through a logical channel.
- RLC radio link control
- the RLC layer of the second layer supports reliable data transmission.
- the function of the RLC layer may be implemented as a functional block inside the MAC.
- the PDCKPacket Data Convergence Protocol (layer) of the second layer performs a header compression function to reduce unnecessary control information in order to efficiently transmit IP packets such as IPv4 or IPv6 in a narrow bandwidth wireless interface.
- the radio resource control (RRC) layer located at the bottom of the third layer is defined only in the control plane.
- the RRC layer is responsible for the control of logical channels, transport channels, and physical channels in connection with configuration, re-conf igurat ion, and release of radio bearers (RBs).
- RB means a service provided by the second layer for data transmission between the terminal and the network.
- the RRC layers of the UE and the network exchange RRC messages with each other. If there is an RRC connection (RRC Connected) between the UE and the RRC layer of the network, the UE is in an RRC connected mode, otherwise it is in an RRC idle mode.
- the non-access stratum (NAS) layer above the RRC layer performs functions such as session management and mobility management.
- One cell constituting the base station (eNB) is set to one of bandwidths such as 1.4, 3, 5, 10, 15, and 20 MHz to provide downlink or uplink transmission services to various terminals. Different cells may be configured to provide different bandwidths.
- a downlink transport channel for transmitting data from a network to a terminal includes a broadcast channel (BCH) for transmitting system information, a paging channel (PCH) for transmitting a paging message, and a downlink shared channel (SCH) for transmitting user traffic or a control message. ). Traffic or control messages of a downlink multicast or broadcast service may be transmitted through a downlink SCH or may be transmitted through a separate downlink multicast channel (MCH). Meanwhile, the uplink transmission channel for transmitting data from the terminal to the network includes a random access channel (RAC) for transmitting an initial control message and an uplink shared channel (SCH) for transmitting user traffic or a control message.
- BCH broadcast channel
- PCH paging channel
- SCH downlink shared channel
- BCCH Broadcast Control Channel
- PCCH Paging Control Channel
- CCCH Common Control Channel
- MCCH Modult icast Control Channel
- MTCH Mult icast Traffic Channel
- FIG. 3 is a diagram for describing physical channels used in a 3GPP system and a general signal transmission method using the same.
- the terminal When the terminal is powered on or newly enters the cell, the terminal performs an initial cell search operation such as synchronizing with the base station (S301). To this end, the UE receives a Primary Synchronization Channel (P-SCH) and a Secondary Synchronization Channel (S-SCH) from the base station, synchronizes with the base station, and obtains information such as a cell ID. have. Thereafter, the terminal may receive a physical broadcast channel from the base station to obtain broadcast information in a cell. Meanwhile, the terminal may receive a downlink reference signal (DL RS) in an initial cell search step to check the downlink channel state.
- P-SCH Primary Synchronization Channel
- S-SCH Secondary Synchronization Channel
- the terminal may receive a physical broadcast channel from the base station to obtain broadcast information in a cell. Meanwhile, the terminal may receive a downlink reference signal (DL RS) in an initial cell search step to check the downlink channel state.
- DL RS downlink reference signal
- the UE which has completed the initial cell search receives a physical downlink control channel (PDCCH) and a physical downlink control channel (PDSCH) according to the information carried on the PDCCH to make it more specific.
- System information may be obtained (S302).
- the terminal may perform a random access procedure (Random Access Procedure) for the base station (steps S303 to S306).
- the UE may transmit a specific sequence to the preamble through a Physical Random Access Channel (PRACH) (S303 and S305), and receive a voice response message for the preamble through the PDCCH and the corresponding PDSCH ( S304 and S306).
- PRACH Physical Random Access Channel
- a content ion resolution procedure may be additionally performed.
- the UE After performing the above procedure, the UE performs a PDCCH / PDSCH reception (S307) and a physical uplink shared channel (PUSCH) / physical uplink control channel as a general uplink / downlink signal transmission procedure. Physical Uplink Control Channel (PUCCH) transmission (S308) may be performed.
- the terminal receives downlink control information (DCI) through the PDCCH.
- DCI downlink control information
- the DCI includes control information such as resource allocation information for the terminal, and the format is different according to the purpose of use.
- the control information transmitted by the terminal to the base station through the uplink or received by the terminal from the base station includes a downlink / uplink ACK / NACK signal, a CQK channel quality indicator (PMKPrecoding Matrix index), and a RI (Rank Indicator). ), And the like.
- the terminal may transmit the above-described control information such as CQI / PMI / RI through the PUSCH and / or PUCCH.
- FIG. 4 is a diagram illustrating a control channel included in a control region of one subframe in a downlink radio frame.
- FIG. For reference, a subframe consists of 14 0FDM symbols. According to the subframe configuration, the first 1 to 3 0FDM symbols are used as the control region and the remaining 13 to 11 0FDM symbols are used as the data region.
- R1 to R4 represent reference signals (RS) or pilot signals for antennas 0 to 3.
- the RS is fixed in a constant pattern in a subframe regardless of the control region and the data region.
- the control channel is assigned to a resource that is not assigned an RS in the control area.
- the traffic channel is also allocated to a resource to which no RS is allocated in the data area.
- Control channels allocated to the control region include PCFICH (Physical Control Format Indicator CHannel), PHICH (Physical Hybrid-ARQ Indicator CHannel), PDCCH (Physical, Downlink Control CHannel).
- the PCFICH is a physical control format indicator channel and informs the UE of the number of OFDM symbols used for the PDCCH in every subframe.
- the PCFICH is located in the first OFDM symbol and is set in preference to the PHICH and PDCCH.
- the PCFICH is composed of four resource element groups (REGs), and each REG is distributed in the control region based on the cell IDCCell IDentity.
- One REG is composed of four resource elements (REs).
- RE represents a minimum physical resource defined by one subcarrier and one OFDM symbol.
- the PCFICH value indicates a value of 1 to 3 or 2 to 4 depending on the bandwidth and is modulated by Quadrature Phase Shift Keying (QPSK).
- QPSK Quadrature Phase Shift Keying
- the PHICH is a physical hybrid automatic repeat and request (HARQ) indicator channel and is used to carry HARQ ACK / NACK for uplink transmission. That is, the PHICH indicates a channel through which DL ACK / NACK information for uplink HARQ is transmitted. PHICH is
- It consists of one REG and is scrambled cell-specifically.
- ACK / NACK is indicated by 1 bit and modulated by binary phase shift keying (BPSK).
- SF Spreading Factor
- a plurality of PHICHs mapped to the same resource constitutes a PHICH group.
- the number of PHICHs multiplexed into the PHICH group is determined according to the number of spreading codes.
- the PHICH (group) is repeated three times to obtain diversity gain in the frequency domain and / or the time domain.
- the PDCCH is a physical downlink control channel and is allocated to the first n 0FDM symbols of a subframe.
- n is indicated by the PCFICH as an integer of 1 or more.
- the PDCCH consists of one or more CCEs.
- the PDCCH informs each UE or UE group of information related to resource allocation of a paging channel (PCH) and downlink 1 ink-shared channel (DL-SCH), an uplink scheduling grant, and HARQ information.
- PCH paging channel
- DL-SCH downlink 1 ink-shared channel
- HARQ information HARQ information.
- Paging channel (PCH) and DL-SCH Down 1 ink- shared channel
- the base station and the terminal generally transmit and receive data through the PDSCH except for specific control information or specific service data.
- Data of PDSCH is transmitted to which UE (one or a plurality of UEs), and information on how the UEs should receive and decode PDSCH data is included in the PDCCH and transmitted.
- a specific PDCCH is masked with a cyclic redundancy check (CRC) with a Radio Network Temporary Identity (RNTI) of "A”, a radio resource (eg, frequency location) of "B", and a "C”
- RNC Radio Network Temporary Identity
- the terminal in the cell monitors the PDCCH using its own RNTI information, if there is at least one terminal having the RNTI, the terminals receive the PDCCH, and the "B" and the information through the received PDCCH Receive the PDSCH indicated by "C".
- FIG. 5 is a diagram illustrating a structure of an uplink subframe used in an LTE system.
- an uplink subframe may be divided into a region to which a Physical Uplink Control CHannel (PUCCH) carrying control information is allocated and a region to which a Physical Uplink Shared CHannel (PUSCH) carrying user data is allocated.
- the middle part of the subframe is allocated to the PUSCH, and both parts of the data area are allocated to the PUCCH in the frequency domain.
- Control information transmitted on the PUCCH includes an ACK / NAC used for HARQ, a CQKChannel Quality Indicator indicating a downlink channel state, a RKRank Indicator for MIM0), and a SR (Scheduling Request), which is an uplink resource allocation request.
- the PUCCH for one UE uses one resource block occupying a different frequency in each slot in a subframe. That is, two resource blocks allocated to the PUCCH are frequency hoped at the slot boundary.
- a radio frame consists of two half frames, each half frame comprising four general subframes including two slots, a downlink pilot time slot (DwPTS), a guard period (GP) and It consists of a special subframe including an UpPTS Jplink Pilot Time Slot.
- DwPTS downlink pilot time slot
- GP guard period
- the DwPTS is used for initial cell discovery, synchronization, or channel estimation in the terminal.
- UpPTS is used for channel estimation at the base station and synchronization of uplink transmission of the terminal. That is, DwPTS is used for downlink transmission and UpPTS is used for uplink transmission.
- UpPTS is used for PRACH preamble or SRS transmission.
- the guard interval is a period for removing interference caused in the uplink due to the multipath delay of the downlink signal between the uplink and the downlink.
- uplink / downlink subframe configuration (UL / DL configuration) in the LTE TDD system is shown in Table 1 below.
- D denotes a downlink subframe
- U denotes an uplink subframe
- S denotes the special subframe.
- downlink-to-uplink switch-point periodicity is also shown in the uplink / downlink subframe configuration in each system.
- Tables 2 to 4 show HARQ timelines on the uplink / downlink subframe configuration of Table 1.
- Table 2 shows a transmission subframe index set of the PDSCH for the HARQ-ACK transmitted in a specific uplink subframe.
- Table 3 shows the transmission subframe index of the uplink grant scheduling the PUSCH transmitted in a specific uplink subframe.
- the PUSCH transmitted in subframe # 2 is scheduled by an uplink grant transmitted in subframe # 6.
- the uplink / downlink subframe configuration # 0 of Table 3 is a special case in which the number of downlink subframes is smaller than the number of uplink subframes.
- the PUSCH can be scheduled and indicated in which subframe the PUSCH is using an UL index field on a downlink control format (DCI). That is, according to the indicator of the uplink index, whether an index in parentheses of Table 3 is used, an index without parentheses is used, or both indexes are used in both subframes.
- DCI downlink control format
- Table 4 shows the index of the subframe in which the PHICH is transmitted when the PUSCH is transmitted in a specific uplink subframe.
- the PHICH for the PUSCH transmitted in subframe # 2 means reception in subframe # 6.
- Carrier aggregation refers to a frequency block or (logical sense) in which a terminal is composed of an uplink resource (or a component carrier) and / or a downlink resource (or a component carrier) in order for a wireless communication system to use a wider frequency band. It refers to a method of using a plurality of cells in one large logical frequency band.
- component carrier will be unified.
- the overall system bandwidth is a logical band having a bandwidth of up to 100 MHz.
- the entire system band includes five component carriers, each component carrier having a bandwidth of up to 20 MHz.
- a component carrier includes one or more contiguous subcarriers that are physically contiguous. Each component carrier may have the same bandwidth, or each component carrier may have a different bandwidth.
- each component carrier is shown as being adjacent to each other in the frequency domain, the figure is shown in a logical concept, where each component carrier is physically adjacent to each other. It can either be or be away.
- the center frequency may be used differently for each component carrier or may use one common common carrier for physically adjacent component carriers. For example, assuming that all component carriers are physically adjacent, the center carrier A may be used. In addition, assuming that each component carrier is not physically adjacent to each component carrier, a center carrier A, a center carrier B, or the like may be used separately.
- a component carrier may correspond to a system band of a legacy system.
- a component carrier may correspond to a system band of the LTE system.
- the component carrier may have any one of 1.25, 2.5, 5, 10, or 20 Mhz bandwidth.
- a frequency band used for communication with each terminal is defined in component carrier units.
- UE A may use the entire system band 100 MHz and performs communication using all five component carriers.
- UE ⁇ 3 ⁇ 4 can use only 20 MHz bandwidth and performs communication using one component carrier.
- UEs d and C 2 may use a 40 MHz bandwidth, and perform communication using two component carriers, respectively.
- the two component carriers may or may not be logically / physically adjacent to each other.
- the terminal ( ⁇ represents a case of using two non-contiguous component carriers, and the terminal C2 represents a case of using two adjacent component carriers.
- the method of scheduling the data channel by the control channel is conventional linked carrier scheduling. Scheme and cross carrier scheduling.
- link carrier scheduling as in the existing LTE system using a single component carrier, a control channel transmitted through a specific component carrier schedules only a data channel through the specific component carrier.
- a control channel transmitted through a primary component carrier (Crimary CC) using a carrier indicator field (CIF) is transmitted through the primary component carrier or another component received carrier. Scheduling the data channel transmitted through.
- the eNB divides all available resources into a downlink resource used by the eNB to transmit a signal to the UE and an uplink resource used by the UE to transmit a signal to the eNB, thereby performing a duplex operation. Accordingly, a method of effectively determining resource usage is proposed when dynamically selecting an use of each resource as one of a downlink resource and an uplink resource. Such dynamic resource usage conversion has an advantage in that the optimal resource distribution can be performed at every point in time in which the sizes of downlink traffic and uplink traffic change dynamically.
- the eNB uses the RRC layer signaling, the MAC layer signaling, or the physical layer signaling to convert the dynamic resource use.
- a specific band may be designated as a downlink resource or an uplink resource.
- the TDD system divides the entire subframe into an uplink subframe and a downlink subframe, and uses the uplink transmission and the downlink transmission of the eNB, respectively.
- the 3GPP LTE system provides the uplink / downlink subframe configuration shown in Table 1 above.
- the eNB may perform RRC layer signaling, MAC layer signaling, or physical layer for dynamic resource usage conversion. Signaling may specify whether a specific subframe is a downlink resource or an uplink resource at a specific time point.
- the new signaling may indicate a configuration of a dynamically changed resource, for example, uplink / downlink subframe configuration information different from that indicated on system information in a TDD system.
- the new signaling may include information related to HARQ.
- HARQ timeline configuration information for maintaining the timeline may be included.
- this HARQ timeline configuration information may be defined as an uplink / downlink subframe configuration referred to when defining a downlink HARQ and / or an uplink HARQ timeline.
- a UE accessing a system whose resource usage is dynamically changing receives various information about resource configuration.
- one UE may acquire information of 1) to 4) below at a specific time.
- Uplink / Downlink Subframe Configuration Signaling 1 Uplink / Downlink Subframe Configuration Instructed by System Information
- Uplink / Downlink Subframe Configuration Signaling 2 Uplink / downlink subframe configuration transmitted for the purpose of indicating the use of each subframe through separate signaling
- uplink / downlink subframe configuration signaling 3 downlink HARQ timeline, That is, the uplink / downlink subframe configuration transmitted to define when to transmit the HARQ-ACK for the PDSCH received at a specific time point
- Uplink / Downlink Subframe Configuration Signaling 4 When to transmit a PUSCH for an uplink HARQ timeline, that is, an uplink grant received at a specific time point, and a PHICH for the PUSCH transmitted at a specific time point Setting uplink / downlink subframe transmitted to define when to receive
- the eNB When a specific UE accesses an eNB that dynamically changes resource usage, the eNB operates to designate an uplink / downlink subframe configuration in which the number of uplink subframes is maximum through system information. It is common. This is because there may be a limitation in dynamically changing a subframe configured as a downlink subframe in the system information into an uplink subframe.
- legacy UEs that do not recognize dynamic resource usage change always expect and measure transmission of a CRS Cell-specific Reference Signal (CRS) in a subframe defined as a downlink subframe through system information.
- CRS Cell-specific Reference Signal
- the eNB sets the maximum number of uplink subframes on the system information, and when downlink traffic increases, it is preferable that the eNB dynamically changes some of the uplink subframes into downlink subframes.
- the UE receives the uplink / downlink subframe configuration # 0 as the system information at a specific time point, but the resource usage in each subframe is the uplink / downlink subframe configuration # 1. You can be directed.
- the reference of the downlink HARQ timeline may be indicated by uplink / downlink subframe configuration # 2. Specifically, if the uplink / downlink subframe configuration with a small number of uplink subframes and a large number of downlink subframes is set as a reference of the downlink HARQ timeline, the downlink subframe becomes the maximum HARQ-ACK This creates a situation in which the transmission opportunity of is concentrated in some subframes.
- the reference of the uplink HARQ timeline may be an uplink / downlink subframe configuration in which the number of uplink subframes is the maximum, such as uplink / downlink subframe configuration # 0.
- the uplink subframe in the system information cannot be changed to the uplink subframe for the measurement error of the legacy UE, this is the uplink subframe in a situation in which an uplink / downlink subframe configuration in the system information is given. Since the maximum number of frames can be regarded as a setting, the uplink / downlink subframe setting (signaling 1) and the subframe setting (signaling 4) which are the basis of the uplink HARQ timeline are always regarded as the same. You may.
- each UE may receive signaling for the use of various resources at a specific time point, and according to each signaling, the nominal use of a specific subframe is different. Therefore, when the UE performs different operations according to the use of a particular subframe, it is necessary to clearly define what the purpose of the subframe is to be set based on.
- a UE uses a PDCCH and a DL-SCH associated with an RA-RNTI valid for itself in subframe #n, which is called a random access response message. ), The first valid uplink subframe after subframe # n + 6 or later (when UL delay field is 0) or the next valid uplink subframe (uplink).
- the UL-SCH is transmitted when the link delay field is 1), which means that the transmission time of the UL-SCH may be set differently depending on which criteria the UE determines the validity of the uplink subframe.
- the methods of A) to D) for determining the validity of an uplink subframe in the random access procedure proposed by the present invention will be described in detail.
- the validity of the uplink subframe is determined when the random access procedure is performed according to the use of the subframe configured on the system information.
- the information is information that all UEs connected to the eNB including the legacy UE receive the same information and operate according to the information, this method has the advantage that all the UE can perform the same procedure. That is, the UL-SCH transmission in the random access procedure in which transmission is indicated at the same time is transmitted at the same time, if the uplink delay fields are the same.
- FIG. 7 illustrates an example of performing a random access procedure according to an embodiment of the present invention.
- FIG. 7 illustrates that uplink / downlink subframe configuration # 0 is used in system information (that is, uplink / downlink subframe configuration # 0 is indicated by uplink / downlink subframe configuration signaling 1).
- uplink / downlink subframe configuration # 2 is used for transmitting / receiving an actual signal (ie, when uplink / downlink subframe configuration # 2 is indicated by uplink / downlink subframe configuration signaling 2) )
- an uplink delay field of 1 is assumed.
- the uplink / downlink subframe configuration on the system information may be used.
- subframe # 7 corresponding to subframe # n + 6 is a valid uplink subframe and the next subframe is also a valid uplink subframe, so that subframe # 8 of the same frame is UL It is time to transmit SCH.
- this is different from the case according to the uplink / downlink subframe configuration # 2 designated for the actual subframe use. That is, according to the uplink / downlink subframe configuration # 2, since the subframe # 8 is a downlink subframe, the next subframe # 2 of the next radio frame # m + l becomes a transmission time of the UL ⁇ SCH.
- a time point for transmitting a UL-SCH may be designated as a downlink subframe for actual use.
- the UE determines that i) it has incorrectly detected a DL-SCH that interacts with the PDCCH masked with RA-RNTI and does not perform UL-SCH transmission, or ⁇ ) itself for the actual subframe usage. Incorrectly received signaling or new signaling
- the UL-SCH may be transmitted at the transmission time determined as not received and set according to the uplink / downlink subframe configuration based on the system information. In either case, the RRC layer signaling or MAC layer signaling indicates that there is a mismatch between the transmission / reception operation directed to the UE and the actual subframe use, that is, the downlink subframe is indicated in the actual use but the uplink transmission is indicated.
- the eNB may be informed.
- the validity of the uplink subframe is determined when the random access procedure is performed according to the use of the subframe on the signaling designating the actual subframe use.
- UL—SCH is transmitted in subframe # 2 of the radio frame # m + l according to the uplink / downlink subframe configuration # 2 indicated for actual subframe use.
- uplink / downlink subframe configuration # 2 is used as an actual subframe, subframe according to scheme A). If the UL-SCH scheduling message is transmitted in # 1, the UL-SCH should be transmitted in subframe # 8. However, according to the uplink / downlink subframe configuration # 2, which is the actual subframe use, since the subframe # 8 is designated for the downlink use, it is impossible to eventually transmit a scheduling message for scheduling the UL-SCH in the subframe # 1. Done. In this case, such a restriction can be avoided by following the actual subframe use as in the scheme B), and scheduling in any downlink subframe and special subframe is possible.
- the random access response message may be operable to be regarded as valid only in a time interval in which the subframe usage indication signal is not changed. In case of indicating UL-SCH transmission at 2, it may be assumed that a subframe usage change indicator is not transmitted between time 1 and time 2.
- time point 1 and time point 2 belong to the valid time interval of one subframe usage change indicator.
- the new use change indicator may always be interpreted as indicating the same subframe use as the previous subframe use change indicator.
- the change indicator is regarded as a reception error and / or the related UL-SCH transmission is skipped. To add an action.
- the validity of the uplink subframe is determined when the random access procedure is performed according to the use of the subframe in the uplink / downlink subframe configuration specified by the eNB to configure the downlink HARQ timeline. .
- the uplink / downlink subframe configuration designated as the downlink HARQ timeline is prepared for the case where the valid uplink subframe is minimized, and thus there is an advantage that there is no restriction to transmit a scheduling message for the random access procedure.
- the HARQ timeline is set to be persistent rather than the actual subframe use, random access can be stably performed even when an error occurs in the reception of signaling indicating the subframe use.
- FIG. 8 shows another example of performing a random access procedure according to an embodiment of the present invention.
- FIG. 8 shows uplink / downlink subframe configuration # 1 for actual subframe use, and uplink / downlink as a reference for the downlink HARQ timeline. Assume a case where subframe configuration # 2 is used.
- the validity of the uplink subframe is determined when the random access procedure is performed according to the use of the subframe in the uplink / downlink subframe configuration specified by the eNB for configuring the uplink HARQ timeline.
- the scheme D) has the advantage that the implementation of the scheduler can be simplified because the UL-SCH on the random access can be scheduled considering the uplink / downlink subframe configuration based on the same HARQ timeline as the general PUSCH.
- the above-described schemes are also applicable to a system based on FDD.
- FDD frequency division duplex
- the uplink band and the subframe are divided into the uplink subframe and the downlink subframe similarly to the TDD, and for this classification, various signaling, for example, what is actually used for each subframe, downlink HARQ or Use of a subframe that is a reference of a timeline for uplink HARQ Signaling about uplink / downlink subframe configuration may be defined.
- the uplink / downlink subframe configuration in the system information is set to the uplink / downlink subframe in which all subframes are uplink subframes. Can be set.
- the signaling scheme proposed in the above-described embodiments may be usefully used in cases other than the random access procedure.
- the signaling that informs the eNB through an RRC layer signal or a MAC layer signal that there is a mismatch between the transmission and reception operation directed to the UE and the actual subframe use In this case, even when operations other than the random access procedure are available when the UE finds such an inconsistency.
- the eNB schedules a PUSCH transmission (or a PDSCH transmission) for a subframe that the UE identifies as a downlink subframe (or an uplink subframe) in actual subframe use, the UE is inconsistent on the eNB indication. Can be found and reported to the eNB.
- FIG. 9 shows an example of performing uplink transmission according to an embodiment of the present invention.
- FIG. 9 assumes that uplink / downlink subframe configuration # 2 is used for actual subframe use, whereas uplink HARQ timeline is configured to follow uplink / downlink subframe configuration # 1.
- each subframe # 8 according to an uplink HARQ timeline of uplink / downlink subframe configuration # 1. And PUSCH transmission is attempted in subframe # 3. This PUSCH transmission attempt is inconsistent with the actual use in the corresponding subframe set to the downlink subframe, so that the UE can find a mismatch between eNB indications.
- determining a periodic SRS transmission time point it is determined whether a condition used corresponds to an uplink subframe on which uplink / downlink subframe configuration.
- the UE has a common point in that the UE transmits a corresponding signal in a subframe that satisfies a predetermined condition when a predetermined time elapses from the uplink signal transmission indication from the eNB.
- one uplink / downlink subframe configuration suitable for the four uplink / downlink subframe configurations of the above-described uplink / downlink subframe configuration signaling 1 to 4 may be set.
- the transmission time of the SRS may be determined only for subframes that are uplink subframes in the corresponding uplink / downlink subframe configuration. That is, predetermined A specific subframe that first satisfies a condition may be defined to be an uplink subframe and a first subframe that satisfies a specific condition on a predetermined uplink / downlink subframe configuration.
- uplink / downlink subframe configuration # 0 when uplink / downlink subframe configuration # 0 is used as a reference for the uplink HARQ timeline, inconsistency in the above-described subframe usage can be found even with the uplink index setting. For example, while the UE detects an uplink grant in subframe # 6 and the uplink index setting of the uplink grant indicates PUSCH transmission in subframe # 3, the subframe # 3 is actually used. If uplink / downlink subframe configuration # 2 configured as this downlink subframe is indicated, unmatching may be found between the two signaling.
- the UE When the UE detects an uplink grant indicating PUSCH transmission on a subframe in which the actual use is designated as a downlink subframe, the UE may find a mismatch in eNB indication related to the use designation of the subframe. 9 is an example of such a case.
- N-1 a mismatched uplink grant up to N-1 for a predetermined time corresponds to a case of detecting a false alarm of the uplink grant, that is, an eNB that has not been transmitted by the eNB.
- the subframe transmitting the uplink grant is always a downlink subframe, and the UE always attempts to detect DCI format 1A to obtain scheduling information of the PDSCH, and DCI format 0 having the same length is separately decoded in this process. Since it is automatically detected without a process, this mismatched uplink grant may be limited to DCI format 0 having the same length as DCI format 1A scheduling the PDSCH.
- the eNB sets the detection number N of the mismatched uplink grant to a higher layer such as an RRC layer.
- the mismatched uplink grant may include retransmission indicated through the PHICH as well as an uplink grant transmitted through the PDCCH or the EPDCCH. This means that the UE detects the PHICH NACK signal of a specific downlink subframe and is instructed to retransmit the PUSCH in the specific subframe. If the corresponding subframe is configured as a downlink subframe for actual use, the indication through this PHICH is also inconsistent. It is considered as an uplink grant.
- the UE may regard the uplink grant as its own error alarm and omit the PUSCH transmission process according to the mismatched uplink grant.
- This operation may be applied until N ⁇ 1 mismatches of uplink grants are detected. Or, it may be regarded as an inconsistency caused by not receiving new actual usage indication signaling and operate to perform PUSCH transmission according to an uplink grant.
- the eNB may indicate which of the two operations to take via a higher layer signal such as RRC.
- uplink / downlink subframe configuration # 0 as an uplink HARQ timeline
- PUSCH transmission in two subframes may be simultaneously indicated in one uplink grant, in which case a specific subframe
- other subframes may be configured as a downlink subframe.
- the following operations 1 to 3 are possible according to the priority between uplink grant detection and subframe usage signaling.
- Operation 1 Priority is given to an uplink grant to transmit both PUSCHs in two subframes.
- Operation 2 Subframe usage signaling is given priority so that no PUSCH is transmitted in any subframe. That is, the uplink grant itself is regarded as an error alarm.
- Operation 3 The PUSCH is transmitted where the UL subframe is set, but the PUSCH is not transmitted when the DL subframe is set. It works As a layer of operation 1 and operation 2, it is possible to continuously perform HARQ operation on a subframe in which an uplink subframe is reliable while preventing a case in which the UE misses the actual subframe usage signaling and strongly interferes with a UE receiving a nearby PDSCH. .
- the UE determines that the uplink / downlink subframe configuration currently operated by the eNB is different from what it understands, and is most conservative for the stability of the operation.
- the relevant operation may be performed according to uplink / downlink subframe configuration.
- the most conservative uplink / downlink subframe configuration refers to uplink / downlink subframe configuration including only operations common to all uplink / downlink subframe configurations that can be designated by the eNB.
- the uplink grant is regarded as an error alarm.
- the operation of not transmitting the PUSCH is performed only when the PUSCH transmission is common to both the uplink / downlink subframe configuration indicated by the eNB and the uplink / downlink subframe configuration known by the UE.
- the most conservative uplink / downlink subframe configuration on each of the two uplink / downlink subframe configuration that is, including only the common part with respect to PUSCH on the two uplink / downlink subframe configuration
- the uplink / downlink subframe configuration may be selected and interpreted accordingly. Can be.
- the most conservative uplink / downlink subframe configuration is performed in all uplink / downlink subframe configuration among the uplink / downlink subframe configuration that the eNB can use.
- An uplink / downlink subframe configuration having only a subframe configured as an uplink subframe may be configured as an uplink subframe. This may be an uplink / downlink subframe configuration determined to define a downlink HARQ timeline.
- the uplink / downlink subframe configuration which is the uplink / downlink subframe configuration having the smallest uplink subframe among the uplink / downlink subframe configuration of Table 1 It may be fixed as # 5.
- uplink / downlink subframe configuration having a minimum uplink subframe on the same downlink-uplink switching period (eg, downlink) If the link-uplink switching period is 5ms, the uplink / downlink subframe configuration # 2 may be determined. If the downlink-uplink switching period is 10ms, the uplink / downlink subframe configuration # 5) may be determined. Alternatively, the most conservative uplink / downlink subframe configuration may be designated through separate signaling.
- the uplink grant for a subframe is considered to be valid and preferably transmits a PUSCH.
- the uplink grant detected by the UE indicates PUSCH transmission in a subframe defined as a downlink subframe in the most conservative uplink / downlink subframe configuration, this is regarded as an error alarm and the PUSCH is not transmitted. It is preferable not to.
- the most conservative uplink / downlink subframe configuration in terms of PUSCH transmission is that all subframes are downlink. It may be defined as a subframe uplink / downlink subframe configuration. This means that the UE omits any PUSCH transmission if a mismatch in the eNB indication is found.
- the same principle is also applicable to reception of a PDSCH and related HARQ-ACK transmission. If the UE finds that the indication of the eNB is inconsistent (for example, when a message is received for scheduling PDSCH in a subframe whose use is indicated as an uplink subframe), the most conservative uplink / downlink in terms of PDSCH Select link subframe configuration. Subsequently, if the subframe capable of PDSCH transmission in the selected uplink / downlink subframe configuration is considered valid, the PDSCH reception and related HARQ-ACK are transmitted, but the uplink subframe is configured on the selected uplink / downlink subframe configuration.
- PDSCH scheduling for the subframe is an error if It is considered an alarm and does not attempt to receive a PDSCH, that is, it receives a PDSCH and does not store the result in a buffer and does not transmit the associated HARQ-ACK.
- HARQ-ACK is treated as DTX.
- the most conservative uplink / downlink subframe configuration from a PDSCH perspective is a downlink subframe (or special subframe) in all uplink / downlink subframe configuration among the uplink / downlink subframe configuration that can be used by an eNB. It may be an uplink / downlink subframe configuration having only a subframe set to (frame) as a downlink subframe. This means that an uplink / downlink subframe configuration determined to define an uplink HARQ timeline may be selected.
- the black may be fixed to the uplink / downlink subframe configuration # 0 which is the uplink / downlink subframe configuration having the smallest downlink subframe among the uplink / downlink subframe configuration of Table 1.
- the uplink / downlink subframe configuration having the minimum downlink subframe on the same downlink-uplink switching period is uplink / Downlink subframe configuration (uplink / downlink subframe configuration # 0 when downlink-uplink switching period is 5ms; uplink / downlink subframe configuration ## when downlink-uplink switching period is 10ms) 3) may be determined.
- the most conservative uplink / downlink subframe configuration from the viewpoint of PDSCH transmission is that all subframes are uplink subframes. It may be defined as an uplink / downlink subframe configuration. This means that if a mismatch is found in the eNB indication, the UE omits any PDSCH reception and also omits HARQ-ACK transmission.
- UE may discover, the inconsistency "when it receives a higher-layer signal indicative of the uplink transmission on the sub-frame is specified, the actual use in a DL subframe.
- Such uplink transmission may exemplify periodic CSI reporting, periodic SRS transmission, and periodically repeated SR transmission resource allocation.
- Aperiodic SRS In the case of transmission, if a plurality of SRS transmissions are caused by one aperiodic SRS transmission triggering message, such an inconsistency is detected when the time when the corresponding SRS transmission occurs is a subframe designated as a downlink subframe. You can report it.
- the mismatched uplink transmission indication may be omitted because it is regarded as a signaling transmission error, and this method may be regarded as a more conservative but safer method in terms of preventing interference signals not scheduled by the eNB. have.
- the signaling for the actual usage indication may be regarded as an error and may operate to follow the uplink transmission indication.
- uplink transmission is given priority over more reliable uplink transmission indication. It may be more advantageous to operate to perform.
- the UE may find the above-described inconsistency. .
- FIG. 10 shows an example in which a UE discovers a mismatch in subframe usage according to an embodiment of the present invention.
- signaling transmitted at a specific time point may be considered valid for one transmission period of the corresponding signaling. In this case, if the UE fails to receive the corresponding signaling in the next period, the usage of the subframe to be used in the next period cannot be determined.
- a validity period for which the once transmitted signaling is valid for a predetermined period may be set. If new signaling is not received even when the validity period expires. The UE cannot grasp the purpose of the subframe to be used after expiration.
- the UE automatically indicates that an inconsistency occurs in the indication of the eNB.
- signaling indicating subframe usage of a corresponding radio frame is transmitted in subframe # 0 of every radio frame, but the UE receives subframe usage indication signaling for radio frame # m + 2. If you do not. At this time, the UE selects the most conservative uplink / downlink subframe configuration applicable to the radio frame # m + 2. In particular, FIG. 10 assumes that uplink / downlink subframe configuration # 2 is selected as the most conservative uplink / downlink subframe configuration associated with PUSCH transmission.
- the UE receives an uplink grant in subframe # 5 and the uplink grant indicates PUSCH transmission in subframe # 9 (however, the uplink / downlink subframe configuration # 0 is uplinked). Assuming that the UE follows the link HARQ timeline), the UE has a subframe # 9 in the uplink / downlink subframe configuration # 2, which is the most conservative uplink / downlink subframe configuration selected for PUSCH transmission. Since this frame is considered as an error alarm, the PUSCH transmission is not performed.
- the uplink grant is transmitted before a predetermined subframe from the actual PUSCH transmission time, the uplink grant transmission and the PUSCH transmission can be performed in different radio frames, and the UL-DL uplink / downlink subframe is interposed therebetween. Changes in settings may occur.
- the above-described operation for the subframe usage indication reception failure may be applied. That is, in order to maintain the uplink HARQ operation, if an uplink grant is transmitted only in a downlink subframe even in the most conservative uplink / downlink subframe configuration from a downlink perspective, Subframe usage indication signal In the case of reception failure, a discrepancy may be regarded as an inconsistency of the eNB in the radio frame # m + l, and the operation may be applied accordingly.
- the SRS transmission condition can be reliably applied only when the UE successfully receives the subframe indication signal. Accordingly, the UE successfully receives the subframe indication signal for all radio frames between two time points. It can operate to transmit the SRS only when received.
- the UE in a situation where the UE triggers aperiodic SRS in a specific radio frame and determines the transmission time based on a series of conditions, the UE fails to receive the subframe usage indication signal at least once or in response to the eNB's indication. If a discrepancy is found, the transmission condition of the aperiodic SRS is considered to be inapplicable, and the SRS transmission is skipped to prevent the interference to the neighboring UE.
- the aperiodic SRS triggering message is considered to be valid only in a time interval in which the subframe indication signal is not changed. It is also possible to work.
- the UE assumes that when the aperiodic SRS triggering message received at time point 1 indicates SRS transmission at time point 2, the subframe usage change indicator is not transmitted between time point 1 and time point 2. can do. It may always be interpreted that time point 1 and time point 2 belong to the valid time interval of one subframe usage change indicator. Or, if a new subframe redirection indicator can be transmitted between time point 1 and time point 2, the new relocation indicator may be interpreted to always indicate the same subframe use as the previous subframe redirection indicator. have. In this case, if the UE receives a subframe usage change indicator indicating a different subframe usage between two time points, the UE may operate to consider the change indicator as an error and / or omit related SRS transmission.
- the UE may configure the uplink / downlink subframe configuration # 4 even if the downlink subframe is increased to the maximum in the new uplink / downlink subframe configuration. It can be seen that it can only be, that is, uplink / downlink subframe configuration # 5 in which the use of the two subframes are changed based on the uplink / downlink subframe configuration # 3 is that signaling is not possible. In this case, the most conservative uplink / downlink subframe configuration is the uplink / downlink subframe configuration # 4 from the PUSCH point of view, and a PUSCH-related operation can be performed based on this.
- the UE may consider either of them as received by error.
- the uplink / downlink subframe configuration indicated by the e NB is inconsistent with the uplink / downlink subframe configuration that they understand. In this case, since information on uplink / downlink subframe configuration indicated by the eNB is insufficient, it may be safer to perform an operation according to the most conservative uplink / downlink subframe configuration described above.
- signaling for subframe usage change may be periodically transmitted. If missed, the UE operation can be summarized as follows.
- PDCCH monitoring may be defined according to uplink / downlink subframe configuration indicated on system information. Since the PDCCH schedules the PDSCH of the same subframe, if the uplink / downlink subframe configuration indicated in the system information is selected as the most conservative uplink / downlink subframe configuration in terms of PDSCH reception, the PDCCH monitoring also uses the same system information. This is because the uplink / downlink subframe configuration indicated above is followed.
- the criterion for determining the validity of the PUSCH scheduling in the uplink view is defined to follow the uplink / downlink subframe configuration indicated on the system information in order to define the same operation as the PDCCH monitoring or as described above.
- the uplink / downlink subframe configuration indicated for downlink HARQ may be selected and defined accordingly.
- the mismatch of the eNB indication may be applied even in a situation in which a carrier aggregation technique is applied.
- the UE may determine that a subcarrier is transmitted through another component carrier.
- a case of receiving a message for scheduling a PDSCH or a PUSCH transmission may be received as a higher layer signal such as PDCCH / EPDCCH or RRC.
- a scheduling message may be regarded as an error
- the component carrier deactivation information is regarded as invalid
- / or a signal may be sent to inform the eNB that an inconsistency indication has been received. have.
- signaling for subframe usage of a sub-component carrier can be transmitted through a main component carrier, because the main component carrier is generally in an environment capable of stable signaling transmission. .
- a mismatch indication may be found by grasping a message detected by a UE in a component carrier that transmits a scheduling message.
- PCell main-component carrier
- SCell main-component carrier
- downlink assignment information indicating DLSCH reception in the SCell may be detected in subframe # n + k.
- the UE since the UE should take only one operation of downlink reception and uplink transmission in the same subframe, it can be understood that this situation is a mismatch of eNB scheduling.
- the UE may give priority to perform one of PDSCH reception and PUSCH transmission, and the priority may be defined in advance or may be set in advance by the eNB. Or, the priority may vary depending on the situation. For example, if the PUSCH includes control information such as CSI or uplink HARQ-ACK together with the general data, the PUSCH transmission is given priority. Otherwise, the PUSCH may be given priority to PDSCH reception. Or, it may operate to maintain the most stable operation by invalidating both the downlink allocation and the uplink grant without giving priority to either side, which means that a UE that finds a scheduling mismatch does not perform both the downlink reception and the uplink transmission. Means that.
- the case where the UE detects a scheduling message indicating PDSCH reception and PUSCH transmission in the same subframe may not necessarily be limited to cross carrier scheduling.
- PDSCH reception or PUSCH transmission is indicated in a plurality of subframes through a single scheduling message, priority may be given to a side where a reception / transmission operation is started more recently.
- a PUSCH is transmitted from subframe # n + x through an uplink grant, but subframe # If ⁇ + ⁇ coincides with the subframe receiving the PDSCH, the PUSCH transmission recently indicated to be applied to the scheduling message has priority and subframe # n + x starts. Operate to start transmitting the PUSCH.
- the scheduling message may include semi-persistent scheduling. Of course, even in this case, in order to operate more conservatively, it is also possible to invalidate both the downlink allocation and the uplink grant.
- the uplink transmission may include not only a PUSCH transmission indication but also a PUCCH transmission indication or an SRS transmission indication.
- PDSCH reception that is dynamically indicated through PDCCH / EPDCCH may be regarded as more unstable and may be operated to invalidate PDSCH reception. Priority is given to link transmission.
- a subframe that receives a PDSCH whose transmission location is indicated by a higher layer signal such as semi-static scheduling when a PUSCH transmission that is dynamically indicated through a PDCCH / EPDCCH is scheduled, the dynamic indication is considered to be more unstable and the PDSCH May be operative to receive. In this case, in order to operate more stably, it is also possible to invalidate both the downlink allocation and the uplink grant.
- FIG. 11 illustrates a block diagram of a communication device according to an embodiment of the present invention.
- the communication device 1100 includes a processor 1110, a memory 1120, an RF module 1130, a display module 1140, and a user interface module 1150.
- the communication device 1100 is shown for convenience of description and some models may be omitted. In addition, the communication device 1100 may further include necessary modules. In addition, some modules in the communication device 1100 may be classified into more granular modules.
- the processor 1110 is configured to perform an operation according to the embodiment of the present invention illustrated with reference to the drawings. In detail, the detailed operation of the processor 1110 may refer to the contents described with reference to FIGS. 1 to 10.
- the memory 1120 is connected to the processor 1110 and stores an operating system, an application, a program code, data, and the like.
- the RF module 1130 is connected to the processor 1110 and converts a baseband signal into a wireless signal or converts a wireless signal into a wireless signal. Converts to baseband signal. To this end, the RF module 1130 performs analog conversion, amplification, filtering and frequency up-conversion, or a reverse process thereof.
- the display modules 1140 are connected to the processor 1110 and display various information.
- the display module 1140 may use well-known elements such as, but not limited to, a liquid crystal display (LCD), a light emitting diode (LED), and an OLEEK organic light emitting diode (OLED).
- the user interface modules 1150 are connected to the processor 1110 and may be configured with a combination of well-known user interfaces such as a keypad, a touch screen, and the like.
- one embodiment of the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof.
- one embodiment of the present invention may include one or more application specific integrated circuits (ASICs), DSPs (digital signal processors), DSPDs (digital signal processing devices), PLDs (programmable logic devices), FPGAs (f). ield programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs ield programmable gate arrays
- processors controllers, microcontrollers, microprocessors, and the like.
- an embodiment of the present invention may be implemented in the form of modules, procedures, functions, etc. that perform the functions or operations described above.
- the software code may be stored in a memory unit and driven by a processor.
- the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
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Abstract
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Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
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EP17165731.5A EP3211955B1 (en) | 2013-01-07 | 2014-01-06 | Method for transmitting and receiving signals at a base station and corresponding base station |
JP2015551607A JP6063061B2 (ja) | 2013-01-07 | 2014-01-06 | 無線通信システムにおいて無線リソース動的変更に基づく信号送受信方法及びそのための装置 |
RU2015126291A RU2608575C1 (ru) | 2013-01-07 | 2014-01-06 | Способ для приемопередачи сигнала на основе динамического изменения беспроводного ресурса в системе беспроводной связи и устройство для этого |
EP14735421.1A EP2943030B1 (en) | 2013-01-07 | 2014-01-06 | Method for transceiving signal based on dynamic change of wireless resource in wireless communications system and appratus therefor |
CN201480004170.5A CN104904299B (zh) | 2013-01-07 | 2014-01-06 | 在无线通信***中基于无线资源的动态变化收发信号的方法及其设备 |
US14/758,472 US10091773B2 (en) | 2013-01-07 | 2014-01-06 | Method for transceiving signal based on dynamic change of wireless resource in wireless communications system and apparatus therefor |
KR1020157018240A KR102112007B1 (ko) | 2013-01-07 | 2014-01-06 | 무선 통신 시스템에서 무선 자원 동적 변경에 기반한 신호 송수신 방법 및 이를 위한 장치 |
US16/101,224 US10420093B2 (en) | 2013-01-07 | 2018-08-10 | Method for transceiving signal based on dynamic change of wireless resource in wireless communications system and apparatus therefor |
US16/532,115 US10582490B2 (en) | 2013-01-07 | 2019-08-05 | Method for transceiving signal based on dynamic change of wireless resource in wireless communications system and apparatus therefor |
US16/748,482 US10966190B2 (en) | 2013-01-07 | 2020-01-21 | Method for transceiving signal based on dynamic change of wireless resource in wireless communications system and apparatus therefor |
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US14/758,472 A-371-Of-International US10091773B2 (en) | 2013-01-07 | 2014-01-06 | Method for transceiving signal based on dynamic change of wireless resource in wireless communications system and apparatus therefor |
US16/101,224 Continuation US10420093B2 (en) | 2013-01-07 | 2018-08-10 | Method for transceiving signal based on dynamic change of wireless resource in wireless communications system and apparatus therefor |
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KR (1) | KR102112007B1 (ko) |
CN (1) | CN104904299B (ko) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108605314A (zh) * | 2016-02-04 | 2018-09-28 | 华为技术有限公司 | 一种上行数据传输方法及相关设备 |
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RU2608575C1 (ru) | 2017-01-23 |
JP2016508329A (ja) | 2016-03-17 |
EP2943030A1 (en) | 2015-11-11 |
US20150373675A1 (en) | 2015-12-24 |
US20190037541A1 (en) | 2019-01-31 |
US10966190B2 (en) | 2021-03-30 |
KR102112007B1 (ko) | 2020-06-04 |
EP3211955A1 (en) | 2017-08-30 |
EP3211955B1 (en) | 2018-11-28 |
KR20150105328A (ko) | 2015-09-16 |
JP6377710B2 (ja) | 2018-08-22 |
JP6063061B2 (ja) | 2017-01-18 |
CN104904299A (zh) | 2015-09-09 |
US10420093B2 (en) | 2019-09-17 |
US10582490B2 (en) | 2020-03-03 |
US10091773B2 (en) | 2018-10-02 |
EP2943030B1 (en) | 2017-04-19 |
US20200236659A1 (en) | 2020-07-23 |
EP2943030A4 (en) | 2016-08-17 |
CN104904299B (zh) | 2018-05-22 |
JP2017069980A (ja) | 2017-04-06 |
US20190364547A1 (en) | 2019-11-28 |
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