WO2014098522A1 - 무선 통신 시스템에서 장치 대 장치 통신 방법 및 장치 - Google Patents
무선 통신 시스템에서 장치 대 장치 통신 방법 및 장치 Download PDFInfo
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- WO2014098522A1 WO2014098522A1 PCT/KR2013/011960 KR2013011960W WO2014098522A1 WO 2014098522 A1 WO2014098522 A1 WO 2014098522A1 KR 2013011960 W KR2013011960 W KR 2013011960W WO 2014098522 A1 WO2014098522 A1 WO 2014098522A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2673—Details of algorithms characterised by synchronisation parameters
- H04L27/2675—Pilot or known symbols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0025—Synchronization between nodes synchronizing potentially movable access points
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
Definitions
- the following description relates to a wireless communication system, and more particularly, to a method and device for device to device communication.
- Wireless communication systems are widely deployed to provide various kinds of communication services such as voice and data.
- a wireless communication system is a multiple access system capable of supporting communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.).
- multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time division multiple access (TDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single carrier frequency (SC-FDMA).
- CDMA code division multiple access
- FDMA frequency division multiple access
- TDMA time division multiple access
- OFDMA orthogonal frequency division multiple access
- SC-FDMA single carrier frequency division multiple access
- MCD division multiple access
- MCDMA multi-carrier frequency division multiple access
- MC-FDMA multi-carrier frequency division multiple access
- D2D communication establishes a direct link between user equipments (UEs), and directly communicates voice and data between terminals without passing through an evolved NodeB (eNB).
- UEs user equipments
- eNB evolved NodeB
- the D2D communication may include a scheme such as UE-to-UE communication, Peer-to-Peer communication, and the like.
- the D2D communication scheme may be applied to machine-to-machine (M2M) communication, machine type communication (MTC), and the like.
- M2M machine-to-machine
- MTC machine type communication
- D2D communication has been considered as a way to solve the burden on the base station due to the rapidly increasing data traffic.
- the D2D communication unlike the conventional wireless communication system, since the data is exchanged between devices without passing through a base station, the network can be overloaded.
- the D2D communication it is possible to expect the effect of reducing the procedure of the base station, the power consumption of the devices participating in the D2D, increase the data transmission speed, increase the capacity of the network, load balancing, cell coverage expansion.
- the present invention provides a technical problem of methods for resource usage and synchronization acquisition for a terminal outside a cell to perform D2D communication.
- a first technical aspect of the present invention is a method for performing a device-to-device (D2D) communication with a second terminal by a first terminal in a wireless communication system, the method comprising receiving a first signal from a second terminal. step; And transmitting a second signal based on the received first signal to a third terminal, wherein the first and second signals are configured to acquire synchronization related to D2D communication at each of the first terminal and the third terminal.
- D2D communication method comprising receiving a first signal from a second terminal. step; And transmitting a second signal based on the received first signal to a third terminal, wherein the first and second signals are configured to acquire synchronization related to D2D communication at each of the first terminal and the third terminal.
- a second technical aspect of the present invention is a second terminal device for performing device-to-device (D2D) communication with a second terminal in a wireless communication system, comprising: a receiving module; And a processor, wherein the processor receives a first signal from a second terminal, and transmits a second signal based on the received first signal to a third terminal, wherein the first and second signals include: A terminal device, used for acquiring synchronization related to D2D communication in each of the first terminal and the third terminal.
- D2D device-to-device
- the first to second technical aspects of the present invention may include the following.
- the first terminal may be located outside the area of the cell to which the second terminal belongs.
- the first signal may include a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS) received from the serving cell of the second terminal.
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- the sequence for the PSS and the sequence for the SSS constituting the first signal are mapped and transmitted to 62 / x subcarriers except the DC (direct current) subcarrier and 62 / y subcarriers except the DC subcarrier, respectively, x, y may be a value selected from divisors of 62.
- the first signal and the second signal may be different from each other in the time-frequency domain to be transmitted.
- the first signal may be transmitted in a time-frequency domain that does not overlap with the PSS and SSS transmitted by the serving cell of the second terminal.
- the first terminal may transmit a second signal identical to the received first signal to the third terminal through a time-frequency resource different from the time-frequency resource from which the first signal is received.
- the first terminal can perform D2D communication only in a resource block in which the received power of the first signal is equal to or less than a preset value.
- the first terminal may stop performing D2D communication for N frames after receiving the first signal.
- the first terminal may determine the transmission power of the D2D communication based on the reception power of the first signal.
- the transmit power of the D2D communication may be inversely proportional to the receive power of the first signal.
- the first terminal may use a downlink frequency band for D2D communication.
- terminals outside the cell can efficiently acquire synchronization and perform D2D communication using resources.
- 1 is a diagram illustrating a structure of a radio frame.
- FIG. 2 is a diagram illustrating a resource grid in a downlink slot.
- 3 is a diagram illustrating a structure of a downlink subframe.
- FIG. 4 is a diagram illustrating a structure of an uplink subframe.
- 5 is a diagram for explaining a synchronization signal.
- FIG. 6 is a diagram for explaining a PBCH.
- FIG. 10 is a diagram illustrating a configuration of a transmitting and receiving device.
- each component or feature may be considered to be optional unless otherwise stated.
- Each component or feature may be embodied in a form that is not combined with other components or features.
- some components and / or features may be combined to form an embodiment of the present invention.
- the order of the operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment.
- the base station has a meaning as a terminal node of the network that directly communicates with the terminal.
- the specific operation described as performed by the base station in this document may be performed by an upper node of the base station in some cases.
- a 'base station (BS)' may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), an access point (AP), and the like.
- the repeater may be replaced by terms such as relay node (RN) and relay station (RS).
- the term “terminal” may be replaced with terms such as a user equipment (UE), a mobile station (MS), a mobile subscriber station (MSS), a subscriber station (SS), and the like.
- Embodiments of the present invention may be supported by standard documents disclosed in at least one of the wireless access systems IEEE 802 system, 3GPP system, 3GPP LTE and LTE-Advanced (LTE-A) system and 3GPP2 system. That is, steps or parts which are not described to clearly reveal the technical spirit of the present invention among the embodiments of the present invention may be supported by the above documents. In addition, all terms disclosed in the present document can be described by the above standard document.
- CDMA code division multiple access
- FDMA frequency division multiple access
- TDMA time division multiple access
- OFDMA orthogonal frequency division multiple access
- SC-FDMA single carrier frequency division multiple access
- CDMA may be implemented with a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000.
- TDMA may be implemented with wireless technologies such as Global System for Mobile communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE).
- GSM Global System for Mobile communications
- GPRS General Packet Radio Service
- EDGE Enhanced Data Rates for GSM Evolution
- OFDMA may be implemented in a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA).
- UTRA is part of the Universal Mobile Telecommunications System (UMTS).
- 3rd Generation Partnership Project (3GPP) long term evolution (LTE) is part of an Evolved UMTS (E-UMTS) using E-UTRA, and employs OFDMA in downlink and SC-FDMA in uplink.
- LTE-A Advanced
- WiMAX can be described by the IEEE 802.16e standard (WirelessMAN-OFDMA Reference System) and the advanced IEEE 802.16m standard (WirelessMAN-OFDMA Advanced system). For clarity, the following description focuses on 3GPP LTE and 3GPP LTE-A systems, but the technical spirit of the present invention is not limited thereto.
- a structure of a radio frame will be described with reference to FIG. 1.
- uplink / downlink signal packet transmission is performed in subframe units, and one subframe is defined as a certain time interval including a plurality of OFDM symbols.
- the 3GPP LTE standard supports a type 1 radio frame structure applicable to frequency division duplex (FDD) and a type 2 radio frame structure applicable to time division duplex (TDD).
- the downlink radio frame consists of 10 subframes, and one subframe consists of two slots in the time domain.
- a time taken for one subframe to be transmitted is called a TTI (transmission time interval).
- one subframe may have a length of 1 ms and one slot may have a length of 0.5 ms.
- One slot includes a plurality of OFDM symbols in the time domain and a plurality of resource blocks (RBs) in the frequency domain.
- RBs resource blocks
- a resource block (RB) is a resource allocation unit and may include a plurality of consecutive subcarriers in one slot.
- the number of OFDM symbols included in one slot may vary depending on the configuration of a cyclic prefix (CP).
- CP has an extended CP (normal CP) and a normal CP (normal CP).
- normal CP normal CP
- the number of OFDM symbols included in one slot may be seven.
- the OFDM symbol is configured by an extended CP, since the length of one OFDM symbol is increased, the number of OFDM symbols included in one slot is smaller than that of the normal CP.
- the number of OFDM symbols included in one slot may be six. If the channel state is unstable, such as when the terminal moves at a high speed, an extended CP may be used to further reduce intersymbol interference.
- one subframe includes 14 OFDM symbols.
- the first two or three OFDM symbols of each subframe may be allocated to a physical downlink control channel (PDCCH), and the remaining OFDM symbols may be allocated to a physical downlink shared channel (PDSCH).
- PDCCH physical downlink control channel
- PDSCH physical downlink shared channel
- Type 2 radio frames consist of two half frames, each of which has five subframes, downlink pilot time slot (DwPTS), guard period (GP), and uplink pilot time slot (UpPTS).
- DwPTS downlink pilot time slot
- GP guard period
- UpPTS uplink pilot time slot
- One subframe consists of two slots.
- DwPTS is used for initial cell search, synchronization or channel estimation at the terminal.
- UpPTS is used for channel estimation at the base station and synchronization of uplink transmission of the terminal.
- the guard period is a period for removing interference generated in the uplink due to the multipath delay of the downlink signal between the uplink and the downlink.
- one subframe consists of two slots regardless of the radio frame type.
- the structure of the radio frame is merely an example, and the number of subframes included in the radio frame or the number of slots included in the subframe and the number of symbols included in the slot may be variously changed.
- FIG. 2 is a diagram illustrating a resource grid in a downlink slot.
- One downlink slot includes seven OFDM symbols in the time domain and one resource block (RB) is shown to include 12 subcarriers in the frequency domain, but the present invention is not limited thereto.
- one slot includes 7 OFDM symbols in the case of a general cyclic prefix (CP), but one slot may include 6 OFDM symbols in the case of an extended-CP (CP).
- Each element on the resource grid is called a resource element.
- One resource block includes 12 ⁇ 7 resource elements.
- the number of NDLs of resource blocks included in a downlink slot depends on a downlink transmission bandwidth.
- the structure of the uplink slot may be the same as the structure of the downlink slot.
- FIG. 3 is a diagram illustrating a structure of a downlink subframe.
- Up to three OFDM symbols at the front of the first slot in one subframe correspond to a control region to which a control channel is allocated.
- the remaining OFDM symbols correspond to data regions to which a physical downlink shared channel (PDSCH) is allocated.
- Downlink control channels used in the 3GPP LTE system include, for example, a Physical Control Format Indicator Channel (PCFICH), a Physical Downlink Control Channel (PDCCH), and a Physical HARQ Indicator Channel.
- PCFICH Physical Hybrid automatic repeat request Indicator Channel
- the PCFICH is transmitted in the first OFDM symbol of a subframe and includes information on the number of OFDM symbols used for control channel transmission in the subframe.
- the PHICH includes a HARQ ACK / NACK signal as a response of uplink transmission.
- Control information transmitted through the PDCCH is referred to as downlink control information (DCI).
- DCI includes uplink or downlink scheduling information or an uplink transmit power control command for a certain terminal group.
- the PDCCH is a resource allocation and transmission format of the downlink shared channel (DL-SCH), resource allocation information of the uplink shared channel (UL-SCH), paging information of the paging channel (PCH), system information on the DL-SCH, on the PDSCH Resource allocation of upper layer control messages such as random access responses transmitted to the network, a set of transmit power control commands for individual terminals in an arbitrary terminal group, transmission power control information, and activation of voice over IP (VoIP) And the like.
- a plurality of PDCCHs may be transmitted in the control region.
- the terminal may monitor the plurality of PDCCHs.
- the PDCCH is transmitted in an aggregation of one or more consecutive Control Channel Elements (CCEs).
- CCEs Control Channel Elements
- the CCE is a logical allocation unit used to provide a PDCCH at a coding rate based on the state of a radio channel.
- the CCE corresponds to a plurality of resource element groups.
- the format of the PDCCH and the number of available bits are determined according to the correlation between the number of CCEs and the coding rate provided by the CCEs.
- the base station determines the PDCCH format according to the DCI transmitted to the terminal, and adds a cyclic redundancy check (CRC) to the control information.
- the CRC is masked with an identifier called a Radio Network Temporary Identifier (RNTI) according to the owner or purpose of the PDCCH.
- RNTI Radio Network Temporary Identifier
- the cell-RNTI (C-RNTI) identifier of the terminal may be masked to the CRC.
- a paging indicator identifier P-RNTI
- the PDCCH is for system information (more specifically, system information block (SIB))
- SI-RNTI system information RNTI
- RA-RNTI Random Access-RNTI
- RA-RNTI may be masked to the CRC to indicate a random access response that is a response to the transmission of the random access preamble of the terminal.
- the uplink subframe may be divided into a control region and a data region in the frequency domain.
- a physical uplink control channel (PUCCH) including uplink control information is allocated to the control region.
- a physical uplink shared channel (PUSCH) including user data is allocated.
- PUCCH physical uplink control channel
- PUSCH physical uplink shared channel
- one UE does not simultaneously transmit a PUCCH and a PUSCH.
- PUCCH for one UE is allocated to an RB pair in a subframe. Resource blocks belonging to a resource block pair occupy different subcarriers for two slots. This is called a resource block pair allocated to the PUCCH is frequency-hopped at the slot boundary.
- PSS Primary synchronous signal
- SSS Secondary Synchronous Signal
- FIG. 5 is a diagram for describing PSS and SSS, which are synchronization signals used for cell search in an LTE / LTE-A system.
- PSS and SSS are synchronization signals used for cell search in an LTE / LTE-A system.
- the cell search will be described.
- a cell handover is performed from a currently connected cell to another cell, or a cell reselection is performed.
- the frequency and symbol synchronization acquisition of the cell, the downlink frame synchronization acquisition of the cell, and the cell identifier (ID) determination may be performed.
- Three cell identifiers constitute one cell group, and there may be 168 cell groups.
- the base station transmits the PSS and the SSS for cell discovery.
- the UE detects the PSS, obtains a 5 ms timing of the cell, and can know about the cell identifier in the cell group.
- the UE can detect the radio frame timing and cell group by detecting the SSS.
- the PSS is transmitted in subframes 0 and 5, and more specifically, in the last OFDM symbol of the first slot in subframes 0 and 5.
- the SSS is transmitted in the second OFDM symbol at the end of the first slot of subframes 0 and 5.
- the SSS is transmitted in an OFDM symbol immediately before the PSS is transmitted.
- This transmission timing is a case of FDD
- PSS is transmitted in the third symbol of subframes 1 and 6, that is, DwPTS
- SSS is transmitted in the last symbol of subframes 0 and 5. That is, in TDD, the SSS is transmitted three symbols before the PSS.
- the PSS is a Zadoff-Chu sequence of length 63. In actual transmission, zero padding is used at both ends of the sequence so that the sequence consists of 73 subcarriers (other than DC subcarriers) of the system frequency bandwidth. 6RB).
- the SSS consists of two length 31 sequences of frequency interleaved length 62 and is transmitted on 72 subcarriers of the total system bandwidth, similar to the PSS.
- PBCH Physical Broadcast Channel
- the PBCH is a channel through which system information corresponding to a master information block (MIB) is transmitted.
- the PBCH is used for acquiring system information after the terminal acquires synchronization through the above-described PSS / SSS and obtains a cell identifier.
- the MIB may include downlink cell bandwidth information, PHICH configuration information, and a subframe number (SFN).
- one MIB transport block is transmitted through a first subframe in four consecutive radio frames.
- the PBCH is transmitted in the first four OFDM symbols of the second slot of subframe 0 in four consecutive radio frames. Therefore, the PBCH transmitting one MIB is transmitted in a 40 ms period.
- the PBCH is transmitted on 72 subcarriers of the total bandwidth on the frequency axis, which corresponds to 6 RB, which is the smallest downlink bandwidth, so that the UE can decode the BCH without problems even if the UE does not know the size of the total system bandwidth. .
- a UE participating in D2D communication is referred to as a dUE, a UE communicating with a base station within coverage of a specific cell, a cUE, a dUE located outside the coverage of a specific base station, an OdUE, and a dUE in coverage are referred to as an IdUE.
- the OdUE and the cUE may be in a situation of being associated with different cells.
- the D2D DL indicates an operation for receiving when performing D2D communication
- the D2D UL indicates an operation for transmitting in the D2D communication.
- An uplink resource for a terminal for performing D2D communication may be referred to as a D2D UL (DUL) (resource), and a downlink resource for a terminal for performing D2D communication may be referred to as a D2D DL (DDL) (resource).
- the uplink resource and the downlink resource used by the base station and the terminal in the cell may be referred to as cellular UL (CUL) and cellular DL (CDL), so as to be distinguished from DUL and DDL, hereinafter referred to as uplink resource and downlink resource.
- CUL cellular UL
- CDL cellular DL
- the D2D user equipment may perform communication using resources (DUL, DDL) for D2D communication, but may also perform D2D communication using downlink resources.
- DUL, DDL resources
- D2D communication using downlink resources may cause a large interference to cellular terminals communicating with a base station, it is necessary to consider this.
- a UE that performs / intends to perform D2D communication using downlink resources may be within cell coverage or outside of cell coverage.
- the downlink resources can be used basically without any separate instruction of the base station.
- the downlink resource may be used as an additional resource for throughput enhancement of D2D communication (D2D control signal or basic data communication) through the uplink resource.
- the UE may determine that it is out of cell coverage if i) fails to detect the PSS / SSS for a predetermined time, ii) fails to decode the PDCCH for a predetermined time, and iii) if the SINR is less than or equal to a certain threshold.
- the determination of the cell boundary may use a first signal (also referred to as a warning signal or a synchronization signal according to its use) as described below.
- a first signal also referred to as a warning signal or a synchronization signal according to its use
- the first terminal UE1 outside the cell uses its own downlink resource through a first signal 1st singal transmitted by the second terminal UE2. It can be seen that the position where the D2D communication can be performed.
- the first signal may perform a function of confirming / confirming that the terminal is outside a cell capable of performing D2D communication using downlink resources without a separate indication of the base station.
- this may be understood as a guard region that protects terminals at a cell boundary from interference due to D2D communication using downlink resources.
- the first signal may be the same / similar to a signal of a predetermined pattern, a new type of signal applied to terminals of a cell boundary, or an existing reference signal. If a new signal is defined as the first signal, all / part of information on the signal configuration such as the area in which the first signal is transmitted, the sequence information, the transmission period, the subframe number transmitted, and the time offset Needs to be signaled to another terminal. However, in the case of a previously promised form, additional signaling may be unnecessary. In addition, if the first signal is an existing reference signal is recycled, for example, a specific pattern of SRS or PRACH is applied to the cell boundary terminal, and the terminals at the cell boundary transmit the first signal periodically / aperiodically. can do.
- SRS is used as the first signal
- all / some of the SRS parameters (SRS comb type, SRS bandwidth, frequency domain position, SRS hopping bandwidth, duration, SRS configuration index, and SRS cyclic shift) are signaled to cUE and OdUE in advance.
- the RACH is used as the first signal
- all / some of the RACH parameters preamble formats 0 to 4 and the RACH preamble ID
- the region in which the RACH is transmitted may be smaller or larger than 6RB. If the RB is set smaller than 6RB, other RBs may be used for other purposes, or interference to adjacent RBs may be reduced.
- the RB is set larger than 6RB, the performance of detecting the OdUE signal by the cUE will be improved.
- the first signal when used as a synchronization signal, it may have the same / similar structure as the PSS / SSS.
- the PSS / SSS may be repeatedly transmitted, or the PSS / SSS transmission period may be tens to hundreds of ms much longer than the existing period.
- the frequency position at which the PSS / SSS is transmitted may be transmitted in a preset frequency domain instead of 6 RB at the center frequency.
- the first signal is preferably detected by the out-of-cell terminals and used / used as described below.
- the cUE may detect the first signal and use it for power setting, resource allocation, etc. related to D2D communication.
- the detection of the first signal by the cUE may be based on a direct indication of the base station for the search operation of the first signal.
- the base station may indicate an instruction to search for the first signal as a physical layer signal or a higher layer signal.
- the search indication of the first signal may be performed using a specific field of the PDCCH, included in a paging message, and an idle state of the PBCH.
- the cUE receiving the search instruction of the first signal may perform the search for the first signal in a resource such as a pre-signed subframe or a symbol.
- the detecting operation of the first signal of the OdUE may be to empty a certain subframe (ie, stop D2D communication) and search for the first signal.
- a terminal receiving data among the D2D terminals may perform an operation of searching for a first signal during data reception.
- the search period, the interval, etc. of the first signal may be previously promised between the OdUE and the cUE transmitting the first signal.
- the format, transmission period, and interval information of the first signal may be previously signaled or predetermined in the network to the OdUE. If the RACH is recycled as the first signal, the UE at the cell boundary transmits the RACH of the predetermined ID in a specific subframe, and the OdUEs scan the RACH of the corresponding ID and format in the radio frame in which the RACH is transmitted. )can do.
- Information on the RACH signal preamble format (0-4), RACH preamble ID, etc.
- the first signal information may be included in the paging signal.
- the downlink resource performs an operation of searching for PSS / SSS for a predetermined period (or always) in order to determine base station coverage, and in the uplink resource, D2D communication is performed to determine whether a terminal exists at a cell boundary. Abort and search for the first signal.
- a PSS / SSS search is performed in all / some subframes within a predetermined first signal search interval, and a cUE is performed in all / some subframes.
- the first signal may be searched for.
- the period and length of searching for the first signal in the downlink / uplink resource may be preset between terminals, and the period may vary. Since the propagation may vary between bands in FDD, a guard value of a downlink band may be determined by compensating a predetermined value after detection, and in TDD, a guard region may be directly determined.
- the terminal that detects the first signal by the operation as described above may operate as follows.
- the terminal receiving the first signal may set / determine the transmission power of the D2D communication based on the received power of the first signal. For example, when the reception power of the first signal is large, it is recognized that there is a cell boundary terminal nearby, and the D2D transmission power may be set to be inversely proportional to the reception power.
- D2D communication may be performed only in a resource block in which the received power of the first signal is equal to or less than a preset value.
- RB in which reception power is detected below a specific threshold in the band in which the first signal is transmitted in case of FDD, RB of uplink band, and in case of TDD, OdUE has a high possibility that subframe boundaries are shifted.
- RBs corresponding to all SFs may be used for D2D communication, and if the threshold is exceeded, the RB may not be used for D2D communication.
- the first signal may include D2D maximum transmit power or information on the target IoT of the terminal transmitting the first signal and the transmit power of the terminal transmitting the first signal.
- the transmission power in the uplink and / or downlink resources of the D2D communication may be determined.
- the terminal may determine the transmission power of the D2D UL band based on the reception power of the first signal, and may determine the transmission power of the D2D DL band by a value different from the transmission power of the D2D UL band by a predetermined offset size. That is, the terminal receiving the first signal determines the transmission / reception power of the D2D DL resource and the D2D UL resource used in the D2D communication differently.
- the performance of the D2D communication may be stopped for N radio / subframes from the reception time. For example, if the first signal is transmitted once in the M frame, the N frame may be set as a blank from the frame in which the first signal is transmitted so that the OdUE may not perform the D2D.
- the cUE also detects the first signal with a strong reception power after receiving the first signal, the DUE may not perform D2D communication in some frames.
- Suspending D2D communication for a predetermined time may be used in combination with the above-described i) ⁇ iv) scheme.
- adjustment of D2D transmission power and resource allocation may be applied only to N frames after receiving the first signal.
- the cUE or D2D UE may separately perform RLM / RRM / CSI measurement for N frames. This is because N frames from the first signal transmission time point will have less interference from the d2d terminal.
- the UE may not perform the RRM / RLM / CSI measurement in the region for receiving the first signal or perform separate RRM / RLM / CSI measurement.
- the corresponding information may be relayed to the surrounding dUE.
- this information may be relayed to the surrounding dUE.
- the relaying method a method of retransmitting the first signal or a method of notifying the neighboring dUE by using a signal of a predetermined channel and a specific format between dUEs and the like may be used.
- the first signal may be transmitted / used for synchronization of the terminal out of coverage.
- the terminal within the cell coverage may transmit the first signal according to the instruction of the base station or the like as described above.
- the terminal outside the coverage may receive the first signal and use it to acquire synchronization related to D2D communication.
- the first signal outside the coverage terminal may be received and relayed to another terminal (not limited thereto, and the terminal within coverage, which has received the first signal, may also relay the first signal).
- a relay of the first signal ie a relay of synchronization, is illustrated in FIG. 7.
- the second terminal UE2 may receive a synchronization signal PSS / SSS transmitted from a base station. Based on this, the second terminal UE2 may transmit a first signal to the first terminal UE1. have.
- the first terminal UE1 located outside the area of the cell to which the second terminal UE2 belongs transmits a second signal based on the received first signal to the third terminal UE3. Can be.
- the first terminal can obtain synchronization related to D2D communication from the first signal.
- the third terminal can obtain the synchronization related to the D2D communication from the second signal.
- the first signal as a synchronization signal may be a PSS / SSS in the same or modified form as the PSS / SSS.
- a sequence for the PSS and a sequence for the SSS constituting the first signal are each assigned to 62 / x subcarriers except the DC (direct current) subcarrier and 62 / y subcarriers except the DC subcarrier, respectively.
- the data may be mapped and transmitted (x and y are values selected from divisors of 62).
- the first signal may be shorter or longer than the conventional PSS / SSS.
- the second signal may also have a structure that is the same as the first signal or shorter or longer than the PSS / SSS or the first signal transmitted by the base station.
- the PSS / SSS may be repeated by a predetermined number.
- the first signal may be transmitted with a specific offset from the PSS / SSS reception time of the base station.
- the second signal may also be transmitted at a predetermined offset from the first signal. That is, the PSS / SSS of the BS and the first signal, the first signal, and the second signal may be different in time and / or frequency domain from each other. In other words, the first signal is transmitted in a time and / or frequency domain that does not overlap with the PSS and SSS transmitted by the serving cell of the second UE UE2, and the first UE UE1 receives the received signal.
- a second signal equal to a first signal may be transmitted to the third terminal UE3 through a resource different from a time and / or frequency resource at which the first signal is received.
- the terminal may operate in synchronization with the base station within the coverage and in synchronization with a group unit (selected by the representative terminal) outside the coverage. It is possible to separate the PSS / SSS sequence used within the coverage and the PSS / SSS sequence used outside the coverage (transmitted by a specific UE) (which may be a newly designed or existing PSS / SSS extension / reduction).
- the PSS / SSS transmitted by the terminal may be in the same format as the above-described sync signal. Alternatively, the format may be the same, but the transmission frequency position may be a predetermined position.
- the PSS / SSS transmitted by the base station in the case of TDD
- the PSS / SSS transmitted by the representative terminals out of coverage can be clearly distinguished. If the group led by the representative UE moves to a range capable of receiving the PSS / SSS of the base station (base station PSS / SSS measurement method separately) performs the operation according to the base station synchronization. This can be mandatory if the interference is severe (ie above the threshold). If the group led by the representative terminal detects the PSS / SSS transmitted by the group led by the other representative terminal, it does not perform any special operation. However, if the signal strength of the PSS / SSS signal of the other representative terminal becomes more than a threshold, synchronization between the two is performed. Procedures may be in place.
- the OdUE may stop the D2D communication and perform the first signal search. For example, if the RACH is used as the first signal, the cUE transmits the first signal in a previously promised subframe or radio frame, and the dUE stops D2D communication in some subframes of the radio frame and scans the first signal. can do. For example, the OdUE (the UE declaring the RLF or the RSRP having entered the coverage or the RSRP is below a certain threshold, or the PDCCH decoding failure probability is above a certain threshold (which may be set to be different from the RLF threshold)) is entered.
- the OdUE the UE declaring the RLF or the RSRP having entered the coverage or the RSRP is below a certain threshold, or the PDCCH decoding failure probability is above a certain threshold (which may be set to be different from the RLF threshold) is entered.
- the length of the subframe (or a symbol or a radio frame) for searching for the first signal may be increased in proportion to the timer. This is because, as time goes out of coverage, the subframe boundary is shifted and more sections have to be searched.
- the UEs are determined to be out of coverage and regard the downlink resources as D2D candidate resources.
- the UE searches for uplink resources for a predetermined period, and the dUE leaving the guard region may perform D2D communication using the downlink resources.
- a compensation factor may be introduced into the detection probe according to the difference between the downlink and uplink bands.
- control of all downlink resources is performed through an uplink band. That is, the uplink resource may be regarded as a Pcell, and the downlink band may be a Scell, so that the Pcell may operate as cross carrier scheduling.
- the use of downlink resources may be configured by the UE only when all UEs are determined to be out of coverage, and thus may signal to other D2D UEs whether the two UEs are within coverage or outside of the D2D link setup. For example, whether or not the coverage signal belongs to the coverage may be embedded and transmitted.
- one of the D2D UEs may directly configure downlink resource use through an uplink resource.
- the transmitted signal may transmit information on which subframe among downlink resources is to be used as a D2D DL / UL.
- the corresponding terminal or the base station may indicate whether to use the DL resources.
- the base station may directly instruct the cUE, and the OdUE may directly terminate / stop by detecting the PSS / SSS and the first signal.
- the OdUE may not use 6 RBs in the middle for all subframes of the (FDD) DL band for D2D purposes.
- the PSS / SSS positions of subframes 0 and 5 need to be used because the subframe boundaries of the cellular network are known, but the subframe boundaries of the cellular network are not known outside the coverage area. It cannot be used for D2D.
- the downlink bandwidth is small because 6RB is not used continuously, the effect of increasing the yield due to the use of the downlink band is reduced. Therefore, in this case, 6RB can be periodically used for D2D in the middle of the downlink band.
- the D2D UE performs cell search without using 6RB for D2D communication at a specific period.
- the PSS / SSS monitoring period can be configured to be variable, which can measure the time that the cell search fails with a timer and change the period. For example, a terminal entering out of coverage may operate a timer to increase the interval length for cell searching in proportion to the timer length.
- This operation is performed by the UE receiving the D2D in the downlink band, and when a cell ID of the cellular base station is detected through the PSS / SSS discovery, it is immediately transmitted (for example, by using a predetermined time / frequency resource to transmit a specific signal or It can be notified using the discovery signal or the signal 1.)
- the D2D transmitting terminal is informed and the use of the D2D DL band is stopped.
- the uplink band is similarly searched at regular intervals for guard region discovery.
- terminals failing to detect the PSS / SSS set a predetermined period (for example, 100 ms) and perform a search.
- the first signal search of the UE may be performed for a predetermined time (for example, 10 ms).
- some downlink resources may be left empty and energy detection may be used.
- This method has the advantage of reducing the number of unused RBs used for monitoring, and has the disadvantage of poor cell search performance because it does not detect a known sequence.
- the UE may perform an operation of emptying 6RB and searching for PSS / SSS in the middle of the next subframe.
- the terminals when all terminals participating in the D2D first fail to detect the PSS / SSS in the downlink resource for a long time, the terminals are determined to be out of coverage, and the downlink resource is regarded as a D2D candidate resource.
- the UE searches for uplink resources for a predetermined period, and the dUE leaving the guard region may perform D2D communication using the downlink resources.
- the UE If the UE first fails to detect the PSS / SSS in the downlink subframe for a long time, the UE determines that it is out of coverage and considers the downlink resource as a D2D candidate resource. Only when the dUE is outside the guard region, it can be considered that the downlink resource is fully available. Accordingly, the dUE basically searches not only a cell in a downlink subframe but also a first signal in an uplink subframe. At this time, control of all downlink resources is performed through an uplink subframe.
- This TDD configuration for D2D may be referred to as a D2D default TDD configuration.
- the TDD configuration 0 may be used as the D2D default configuration.
- the 0 configuration is used as the TDD configuration, since a plurality of subframes are configured as UL, the resources available for D2D communication increase, and the amount of signals controlling the downlink subframes may be reduced, thereby increasing efficiency.
- This D2D default TDD configuration is basically used outside the coverage, but may be used even when there are few cellular terminals in the vicinity, or when the PSS / SSS signal is detected but its strength is weak (below a certain threshold).
- the TDD configuration for this D2D may vary. When you first set up the D2D link, you will be able to use the one that last used the TDD configuration. You can measure the timer for a certain period of time between dUEs and change the TDD configuration to the D2D default configuration if the out of coverage condition persists.
- D2D communication may be performed using the TDD configuration used within the existing coverage.
- the use of the downlink subframe is controlled by the default D2D link of the uplink subframe.
- Some downlink subframes may be dynamically changed to uplink subframes in the TDD configuration. (In order to increase D2D yield by increasing uplink resources) or vice versa, some uplink subframes may be dynamically changed to downlink subframes. This is to improve cell discovery of the cellular network by increasing downlink resources.
- the dUE basically performs D2D communication using uplink resources, but in some cases, the base station may allow the use of downlink resources.
- the uplink resource may be used as a default resource for a kind of D2D, and the downlink resource may be used for pure throughput boost while including discovery and the like.
- the base station may directly indicate the ID of the scrambling sequence of the reference signal, the transmission power information, and the information of the resource available in the D2D (when in coverage). Additionally, the base station may indicate information on subframes in which MBSFN configuration is not possible. Such indication information may be directly indicated to both the transmitting and receiving terminals in the D2D terminal or may be indicated only to the transmitting or receiving terminal in the D2D terminal. (If the above information is indicated only to a specific dUE, the received dUE is transmitted to another dUE.) At this time, the ID of the RS transmitted by the D2D transmitter should be assigned an ID different from the neighboring base station and the D2D UE.
- Information of resources available for D2D may be considered implicit in the remaining areas except for the PDCCH, the PDSCH (allocated to the corresponding dUE), and the EPDCCH in the DCI.
- the dUEs should be empty without using an OFDM symbol for transmitting a PSS / SSS in a downlink band for cell discovery for D2D.
- the CRS position should be left blank for RSRP measurement from the base station.
- the PSS / SSS / PBCH and CRS locations may be left empty for D2D purposes in order to perform measurements from the base station within coverage.
- the paging signaling area should also be left blank without being used for D2D purposes.
- the dUE transmitting data on the D2D link in the downlink resource may trigger the DRX mode because it cannot receive measurement and data from the cellular base station.
- the DRX duration may be greater than 40ms for D2D communication.
- the downlink resource of the cellular network may be used as one or more of i) auxiliary resources (band or subframe) of the D2D UL, ii) auxiliary resources of the D2D DL, and iii) auxiliary resources of both the D2D UL / DL.
- part of the downlink band of the cellular is used only for the auxiliary band of the D2D UL or DL link.
- the downlink resource may be divided into two areas for maintaining communication with the cellular network and two areas for D2D communication.
- downlink resources may be used separately in the time domain.
- resources may be divided in subframe units or in frame units.
- resources may be divided in subframe units, some subframes may be used for D2D purposes and the remaining subframes may be used for communication with the base station (also in case of being divided into radio frame units).
- the configuration for D2D is signaled to all D2D UEs in RRC or via the DCI (D2D DL by reusing the TPC field or ARO (A / N resource offset) field in the new DCI for D2D configuration or, for example, the existing DCI).
- Can be used as a downlink resource allocation in the resource.) Can be signaled.
- downlink resources may be divided into three regions (D2D UL / DL, cellular DL).
- the base station may indicate all the resource configuration for the three areas, the base station may indicate only the D2D / cellular area, and the D2D UL / DL in the D2D area may be indicated by the terminal.
- the uplink resource may be divided into a D2D DL, a D2D UL, and a base station UL.
- the base station UL is an area for maintaining communication with the base station.
- the radio resource area may be configured by the base station (when in coverage) and by a terminal (when out of coverage).
- SC-FDMA SC-FDMA is used.
- the proposed method is not limited to SF-FDMA and can be applied to a system operating with OFDMA in the uplink band.
- Time and frequency may be used as a criterion for dividing uplink resources into three areas. When classifying resource regions by frequency, a guard band and a new RF filter may be needed. Therefore, it is assumed that uplink resources are divided by time. Resource division in the time domain may be an SC-FDM symbol unit or a subframe unit.
- the UL resource may be divided and used as a subframe unit as shown in FIG. 9.
- some uplink subframes may be allocated for communication with the base station and the remaining uplink subframes may be allocated for D2D.
- This configuration / setting may be indicated by the base station (within coverage) or may be configured directly between dUEs (out of coverage).
- the last symbol of the last subframe in the D2D DL and the D2D UL boundary may not be used to transmit the SRS but may be set as a guard symbol for UL / DL switching (DL / UL switching period and delay spread sum exceed CP length).
- the guard symbol may be configured when a DL to UL or a UL to DL is switched.
- a guard symbol may be limited between a continuous cellular UL and a D2D UL subframe.
- a guard symbol may be configured when a difference in the transmission power between the D2D UL and the cellular UL exceeds a specific threshold and a transient period of the power amplifier is increased.
- the transient period will be within CP and no guard symbol will be needed.
- the first symbol of the D2D subframe may be configured as a guard symbol. This is to maximize the protection of the subframe structure in communication with the base station.
- Such a guard symbol may be used as an entirely empty region, or a short length SC-FDM symbol (using only some RBs for the entire system bandwidth) may be transmitted and the remaining region may be set as a guard interval.
- the above description is for a case of dividing uplink resources in the time domain.
- resources may be similarly divided into time domains.
- the resource region of the D2D / cellular DL may be divided into OFDM symbol units or subframe units. In case of being divided into OFDM symbols, the performance of the switching circuit is good and the guard interval is rarely needed.
- the PDCCH region of each SF cannot be used for D2D because it must receive the PDCCH and maintain a link with the base station. If it is out of coverage, the PDCCH region does not receive any signal from the base station, so it can be used for cell search of a cellular network (energy detection) or on a D2D link.
- some RS may not be transmitted when the last symbol or the first symbol is used as a guard symbol.
- FIG. 10 is a diagram illustrating the configuration of a transmission point apparatus and a terminal apparatus according to an embodiment of the present invention.
- the transmission point apparatus 10 may include a reception module 11, a transmission module 12, a processor 13, a memory 14, and a plurality of antennas 15. .
- the plurality of antennas 15 refers to a transmission point apparatus that supports MIMO transmission and reception.
- the receiving module 11 may receive various signals, data, and information on the uplink from the terminal.
- the transmission module 12 may transmit various signals, data, and information on downlink to the terminal.
- the processor 13 may control the overall operation of the transmission point apparatus 10.
- the processor 13 of the transmission point apparatus 10 may process matters necessary in the above-described embodiments.
- the processor 13 of the transmission point apparatus 10 performs a function of processing the information received by the transmission point apparatus 10, information to be transmitted to the outside, and the memory 14 stores the calculated information and the like. It may be stored for a predetermined time and may be replaced by a component such as a buffer (not shown).
- the terminal device 20 may include a reception module 21, a transmission module 22, a processor 23, a memory 24, and a plurality of antennas 25. have.
- the plurality of antennas 25 refers to a terminal device that supports MIMO transmission and reception.
- the receiving module 21 may receive various signals, data, and information on downlink from the base station.
- the transmission module 22 may transmit various signals, data, and information on the uplink to the base station.
- the processor 23 may control operations of the entire terminal device 20.
- the processor 23 of the terminal device 20 may process matters necessary in the above-described embodiments.
- the processor 23 of the terminal device 20 performs a function of processing the information received by the terminal device 20, information to be transmitted to the outside, etc., and the memory 24 stores the calculated information and the like for a predetermined time. And may be replaced by a component such as a buffer (not shown).
- the description of the transmission point apparatus 10 may be equally applicable to a relay apparatus as a downlink transmission entity or an uplink reception entity, and the description of the terminal device 20 is a downlink. The same may be applied to a relay apparatus as a receiving subject or an uplink transmitting subject.
- Embodiments of the present invention described above may be implemented through various means.
- embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof.
- a method according to embodiments of the present invention may include one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), and Programmable Logic Devices (PLDs). It may be implemented by field programmable gate arrays (FPGAs), 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 field programmable gate arrays
- processors controllers, microcontrollers, microprocessors, and the like.
- the method according to the embodiments of the present invention may be implemented in the form of a module, a procedure, or a function that performs 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.
- Embodiments of the present invention as described above may be applied to various mobile communication systems.
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Abstract
Description
Claims (13)
- 무선통신시스템에서 제1 단말이 제2 단말과 장치 대 장치(Device to Device, D2D) 통신을 수행하는 방법에 있어서,제2 단말로부터 제1 신호를 수신하는 단계; 및상기 수신된 제1 신호에 기초한 제2 신호를 제3 단말로 전달하는 단계;를 포함하며,상기 제1 및 제2 신호는, 상기 제1 단말 및 상기 제3 단말 각각에서 D2D 통신에 관련된 동기 획득에 사용되는, D2D 통신 방법.
- 제1항에 있어서,상기 제1 단말은 상기 제2 단말이 속한 셀의 영역 바깥에 위치하는, D2D 통신 방법.
- 제1항에 있어서,상기 제1 신호는 상기 제2 단말의 서빙 셀로부터 수신된 PSS(Primary Synchronization Signal) 및 SSS(Secondary Synchronization Signal)를 포함하는, D2D 통신 방법.
- 제1항에 있어서,상기 제1 신호를 구성하는 PSS를 위한 시퀀스 및 SSS를 위한 시퀀스는 각각 DC(Direct Current) 부반송파를 제외한 62/x개의 부반송파 및 상기 DC 부반송파를 제외한 62/y개의 부반송파에 매핑되어 전송되며, x, y는 62의 약수 중에서 선택된 값인, D2D 통신 방법.
- 제1항에 있어서,상기 제1 신호와 상기 제2 신호는 전송되는 시간-주파수 영역이 서로 상이한, D2D 통신 방법.
- 제1항에 있어서,상기 제1 신호는 상기 제2 단말의 서빙 셀이 전송하는 PSS 및 SSS와 중첩되지 않는 시간-주파수 영역에서 전송되는, D2D 통신 방법.
- 제1항에 있어서,상기 제1 단말은 상기 수신된 제1 신호와 동일한 제2 신호를 상기 제1 신호를 수신한 시간-주파수 자원과 상이한 시간-주파수 자원을 통해 상기 제3 단말에게 전달하는, D2D 통신 방법.
- 제1항에 있어서,상기 제1 단말은 상기 제1 신호의 수신 전력이 미리 설정된 값 이하인 자원 블록에서만 D2D 통신을 수행하는, D2D 통신 방법.
- 제1항에 있어서,상기 제1 단말은 상기 제1 신호를 수신한 이후 N개의 프레임 동안 D2D 통신 수행을 중단하는, D2D 통신 방법.
- 제1항에 있어서,상기 제1 단말은 상기 제1 신호의 수신 전력에 기초하여 D2D 통신의 송신 전력을 결정하는, D2D 통신 방법.
- 제10항에 있어서,상기 D2D 통신의 송신 전력은 상기 제1 신호의 수신 전력에 반비례하는, D2D 통신 방법.
- 제1항에 있어서,상기 제1 단말은 상기 제1 신호의 수신 전력이 미리 설정된 값 이하인 경우, 하향링크 주파수 대역을 D2D 통신에 사용하는, D2D 통신 방법.
- 무선 통신 시스템에서 제2 단말과 장치 대 장치(Device to Device, D2D) 통신을 수행하는 제2 단말 장치에 있어서,수신 모듈; 및프로세서를 포함하고,상기 프로세서는, 제2 단말로부터 제1 신호를 수신하고, 상기 수신된 제1 신호에 기초한 제2 신호를 제3 단말로 전달하며,상기 제1 및 제2 신호는, 상기 제1 단말 및 상기 제3 단말 각각에서 D2D 통신에 관련된 동기 획득에 사용되는, 단말 장치.
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Application Number | Priority Date | Filing Date | Title |
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US14/648,784 US9699749B2 (en) | 2012-12-21 | 2013-12-20 | Method and apparatus for device-to-device communication in wireless communication system |
CN201380067482.6A CN104871614B (zh) | 2012-12-21 | 2013-12-20 | 在无线通信系统中设备对设备通信的方法和设备 |
JP2015547870A JP6131331B2 (ja) | 2012-12-21 | 2013-12-20 | 無線通信システムにおいて装置対装置通信方法及び装置 |
KR1020157018387A KR20150105332A (ko) | 2012-12-21 | 2013-12-20 | 무선 통신 시스템에서 장치 대 장치 통신 방법 및 장치 |
EP13866392.7A EP2938142B1 (en) | 2012-12-21 | 2013-12-20 | Method and apparatus for device-to-device communication in wireless communication system |
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KR (1) | KR20150105332A (ko) |
CN (1) | CN104871614B (ko) |
WO (1) | WO2014098522A1 (ko) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016036141A1 (ko) * | 2014-09-02 | 2016-03-10 | 엘지전자 주식회사 | 무선 통신 시스템에서 장치 대 장치 단말의 동기 신호 전송 방법 및 장치 |
CN105407532A (zh) * | 2014-09-12 | 2016-03-16 | 电信科学技术研究院 | 一种d2d通信方法及装置 |
WO2016049517A1 (en) * | 2014-09-26 | 2016-03-31 | Kyocera Corporation | Device-to-device synchronization signal (d2dss) management |
JP2016530782A (ja) * | 2013-07-15 | 2016-09-29 | サムスン エレクトロニクス カンパニー リミテッド | 無線通信システムで装置間の通信のための同期方法及び装置 |
EP3094142A1 (en) * | 2015-05-14 | 2016-11-16 | Industrial Technology Research Institute | Synchronization source device for synchronization coverage extension and method and system using the same |
JP2016226030A (ja) * | 2012-05-23 | 2016-12-28 | 京セラ株式会社 | セルラ通信システムにおける第1のd2d装置から第2のd2d装置への装置間(d2d)制御データの送信 |
JPWO2016021701A1 (ja) * | 2014-08-08 | 2017-04-27 | 京セラ株式会社 | ユーザ端末及びプロセッサ |
WO2017077771A1 (ja) * | 2015-11-02 | 2017-05-11 | シャープ株式会社 | 基地局装置、端末装置および通信方法 |
CN106685873A (zh) * | 2015-11-05 | 2017-05-17 | 夏普株式会社 | 物理信道的配置方法以及基站和用户设备 |
KR20170062519A (ko) * | 2014-10-31 | 2017-06-07 | 소니 주식회사 | 사용자 장비, 통신 시스템, 및 사용자 장비 제어 방법 |
JP2018504804A (ja) * | 2014-12-18 | 2018-02-15 | クアルコム,インコーポレイテッド | IoEデバイスの分散型同期 |
JP2018509034A (ja) * | 2015-01-22 | 2018-03-29 | クゥアルコム・インコーポレイテッドQualcomm Incorporated | マルチ無線デバイスを用いた適応スキャン |
EP3358864A1 (en) * | 2012-12-09 | 2018-08-08 | LG Electronics Inc. | Method for obtaining synchronization for device-to-device communication outside of coverage area in a wireless communication system and apparatus for same |
US10299235B2 (en) | 2014-09-05 | 2019-05-21 | Lg Electronics Inc. | Method for performing communication between devices in wireless communication system and device for performing same |
CN110463123A (zh) * | 2017-03-24 | 2019-11-15 | 高通股份有限公司 | 用于缩短的传输时间间隔的动态瞬态时段配置 |
CN111586645A (zh) * | 2014-07-30 | 2020-08-25 | 索尼公司 | 通信装置及方法 |
Families Citing this family (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2763475B1 (en) * | 2013-02-01 | 2019-03-06 | Samsung Electronics Co., Ltd | Method and apparatus for providing common time reference in wireless communication system |
US9877337B2 (en) * | 2013-03-20 | 2018-01-23 | Lg Electronics Inc. | Method for transmitting and receiving signal using device-to-device communication in wireless communication system, and device for same |
US9160515B2 (en) * | 2013-04-04 | 2015-10-13 | Intel IP Corporation | User equipment and methods for handover enhancement using scaled time-to-trigger and time-of-stay |
WO2014179713A1 (en) * | 2013-05-03 | 2014-11-06 | Interdigital Patent Holdings, Inc. | Systems and methods for fractional carrier sense multiple access with collision avoidance (csma/ca) for wlans |
WO2015010337A1 (zh) * | 2013-07-26 | 2015-01-29 | 华为终端有限公司 | 同步信号的承载方法和用户设备 |
KR102141114B1 (ko) * | 2013-07-31 | 2020-08-04 | 삼성전자주식회사 | 단말 대 단말 통신에서 시간 동기화 방법 및 장치 |
WO2015019940A1 (ja) * | 2013-08-06 | 2015-02-12 | シャープ株式会社 | 端末装置 |
WO2015063185A1 (en) * | 2013-10-31 | 2015-05-07 | Telefonaktiebolaget L M Ericsson (Publ) | Method, communication device and computer program |
CN104754723A (zh) * | 2013-12-26 | 2015-07-01 | 中兴通讯股份有限公司 | 一种空口同步信令的处理方法和装置 |
KR101863341B1 (ko) * | 2014-01-30 | 2018-05-31 | 엘지전자 주식회사 | 무선 통신 시스템에서 단말에 의해 수행되는 d2d 동작 방법 및 상기 방법을 이용하는 단말 |
WO2015119429A1 (en) * | 2014-02-04 | 2015-08-13 | Lg Electronics Inc. | Method and apparatus for delaying resynchronization for d2d operation in wireless communication system |
WO2015140274A1 (en) | 2014-03-21 | 2015-09-24 | Sony Europe Limited | D2d scheduling based on priorities |
US9888519B2 (en) * | 2014-03-24 | 2018-02-06 | Samsung Electronics Co., Ltd. | Apparatus and method for monitoring D2D transmission in connected state |
US20170064620A1 (en) * | 2014-03-28 | 2017-03-02 | Nokia Technologies Oy | Unified discovery signal for small cell and device-to-device discovery |
WO2015163638A1 (ko) * | 2014-04-20 | 2015-10-29 | 엘지전자 주식회사 | 무선 통신 시스템에서 단말 간 직접 통신을 위한 전송 전력 결정 방법 및 이를 위한 장치 |
US9369950B2 (en) * | 2014-06-05 | 2016-06-14 | Sony Corporation | User equipment and method of searching for a cell |
US10411872B2 (en) * | 2014-08-05 | 2019-09-10 | Sharp Kabushiki Kaisha | Terminal device, integrated circuit, and communication method |
CN107251613A (zh) | 2015-02-06 | 2017-10-13 | 瑞典爱立信有限公司 | 设备到设备自适应小区搜索 |
US9723472B2 (en) * | 2015-05-19 | 2017-08-01 | Qualcomm Incorporated | Telescopic tunneled direct link setup discovery method |
WO2016195383A1 (ko) * | 2015-06-01 | 2016-12-08 | 엘지전자 주식회사 | 무선 통신 시스템에서 단말에 의해 수행되는 d2d 동작 방법 및 상기 방법을 이용하는 단말 |
US10609679B2 (en) * | 2015-07-28 | 2020-03-31 | Qualcomm Incorporated | Protocol for device-to-device positioning |
CN108029115B (zh) * | 2015-09-15 | 2021-10-08 | Lg电子株式会社 | 无线通信系统中在终端之间的直接通信方法及其设备 |
EP3340728B1 (en) * | 2015-09-25 | 2023-01-18 | Huawei Technologies Co., Ltd. | Paging method using a sequence group and network side device therefore |
JPWO2017077976A1 (ja) * | 2015-11-05 | 2018-08-23 | 株式会社Nttドコモ | ユーザ装置、基地局、信号送信方法及びリソース割当て方法 |
US10476622B2 (en) * | 2015-11-05 | 2019-11-12 | Intel IP Corporation | Synchronization signals for license assisted access |
JP6669880B2 (ja) | 2016-01-27 | 2020-03-18 | 華為技術有限公司Huawei Technologies Co.,Ltd. | 通信方法及び通信装置 |
EP3220696A1 (en) * | 2016-03-15 | 2017-09-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Telegram splitting for slotted aloha |
US10542503B2 (en) | 2016-04-01 | 2020-01-21 | Motorola Mobility Llc | Method and apparatus for scheduling uplink transmissions with reduced latency |
US10117188B2 (en) | 2016-04-01 | 2018-10-30 | Motorola Mobility Llc | Method and apparatus for scheduling uplink transmissions with reduced latency |
US10069613B2 (en) | 2016-04-01 | 2018-09-04 | Motorola Mobility Llc | Method and apparatus for scheduling uplink transmissions with reduced latency |
US10412620B2 (en) | 2016-04-01 | 2019-09-10 | Motorola Mobility Llc | Method and apparatus for scheduling uplink transmissions with reduced latency |
US10277367B2 (en) | 2016-04-01 | 2019-04-30 | Motorola Mobility Llc | Method and apparatus for scheduling uplink transmissions with reduced latency |
CN114285539B (zh) * | 2016-04-01 | 2024-04-02 | 摩托罗拉移动有限责任公司 | 以减少的延迟调度上行链路传输的方法和设备 |
US10172156B2 (en) | 2016-09-12 | 2019-01-01 | Motorola Mobility Llc | Method and apparatus for scheduling uplink transmissions with reduced latency |
US11563505B2 (en) | 2016-06-01 | 2023-01-24 | Qualcomm Incorporated | Time division multiplexing of synchronization channels |
US10887035B2 (en) * | 2016-06-01 | 2021-01-05 | Qualcomm Incorporated | Time division multiplexing of synchronization channels |
US10615897B2 (en) | 2016-06-01 | 2020-04-07 | Qualcomm Incorporated | Time division multiplexing of synchronization channels |
US10498437B2 (en) | 2016-06-01 | 2019-12-03 | Qualcomm Incorporated | Conveying hypotheses through resource selection of synchronization and broadcast channels |
US11218236B2 (en) | 2016-06-01 | 2022-01-04 | Qualcomm Incorporated | Time division multiplexing of synchronization channels |
WO2017209562A1 (ko) * | 2016-06-02 | 2017-12-07 | 엘지전자(주) | 무선 통신 시스템에서 상향링크 전송 전력을 제어하는 방법 및 이를 위한 장치 |
WO2018009577A1 (en) * | 2016-07-05 | 2018-01-11 | Idac Holdings, Inc. | Hybrid beamforming based network mimo in millimeter wave ultra dense network |
WO2018030185A1 (ja) * | 2016-08-10 | 2018-02-15 | ソニー株式会社 | 通信装置及び通信方法 |
JP2018029323A (ja) | 2016-08-10 | 2018-02-22 | ソニー株式会社 | 通信装置及び通信方法 |
US10656281B2 (en) * | 2016-11-10 | 2020-05-19 | Cable Television Laboratories, Inc. | Systems and methods for interference detection in shared spectrum channels |
KR102323590B1 (ko) * | 2016-11-17 | 2021-11-09 | 삼성전자 주식회사 | 무선통신 시스템에서 복수개의 전송시간단위를 갖는 셀 병합 시 셀 활성화 및 비활성화 방법 및 장치 |
EP4358623A1 (en) | 2016-11-17 | 2024-04-24 | Samsung Electronics Co., Ltd. | Method and apparatus for activating/deactivating cells with scalable transmission time intervals in wireless communication system using cell aggregation |
US9986513B1 (en) * | 2016-12-31 | 2018-05-29 | Sprint Communications Company L.P. | Device to-device (D2D) transmission power control |
WO2018226034A1 (ko) * | 2017-06-06 | 2018-12-13 | 엘지전자 주식회사 | 무선 통신 시스템에서 eNB가 Remote UE로 하향링크 데이터를 전송하는 방법 및 이를 위한 장치 |
US10419077B1 (en) * | 2018-03-28 | 2019-09-17 | Google Llc | Wireless communication via a mobile relay |
US20230209510A1 (en) * | 2020-05-25 | 2023-06-29 | Nippon Telegraph And Telephone Corporation | Radio communication method, radio communication system, radio base station, and repeater |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040056474A (ko) * | 2002-12-23 | 2004-07-01 | 한국전자통신연구원 | 블루투스 네트웍 상의 이동통신 단말기와 주변기기 간의시각 동기 방법 및 이를 저장한 컴퓨터 판독 가능 기록매체 |
KR20090032306A (ko) * | 2007-09-27 | 2009-04-01 | 한국전자통신연구원 | 네트워크상의 타임 동기화 시스템 및 방법 |
KR20100038226A (ko) * | 2007-07-09 | 2010-04-13 | 콸콤 인코포레이티드 | 피어-투-피어 통신 네트워크의 동기화 |
KR20100038441A (ko) * | 2007-07-09 | 2010-04-14 | 콸콤 인코포레이티드 | 피어-투-피어 통신 네트워크의 동기화 |
KR20120073147A (ko) * | 2010-12-24 | 2012-07-04 | 한국전자통신연구원 | 단말간의 직접통신을 수행하는 방법 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8526410B2 (en) * | 2007-07-06 | 2013-09-03 | Qualcomm Incorporated | Methods and apparatus related to interference management when sharing downlink bandwidth between wide area network usage and peer to peer signaling |
US9084283B2 (en) * | 2008-11-19 | 2015-07-14 | Qualcomm Incorporated | Peer-to-peer communication using a wide area network air interface |
US8493887B2 (en) * | 2008-12-30 | 2013-07-23 | Qualcomm Incorporated | Centralized control of peer discovery pilot transmission |
WO2011007085A1 (fr) * | 2009-07-17 | 2011-01-20 | France Telecom | Selection de relais dynamiques pour des communications cooperatives dans un reseau mobile |
US8817702B2 (en) * | 2009-07-22 | 2014-08-26 | Qualcomm Incorporated | Mitigation of interference due to peer-to-peer communication |
CN102687561B (zh) | 2009-12-30 | 2015-07-08 | 诺基亚公司 | 用于自主的ofdma信标接收测量的方法及装置 |
WO2012056633A1 (ja) * | 2010-10-27 | 2012-05-03 | パナソニック株式会社 | 無線通信装置および無線通信方法 |
US8811309B2 (en) | 2010-12-03 | 2014-08-19 | Nokia Corporation | Implicit resource allocation using shifted synchronization sequence |
CN102026307B (zh) * | 2010-12-20 | 2014-04-09 | 北京交通大学 | 下一代移动通信异构网络中的频谱切换方法 |
US20120163278A1 (en) * | 2010-12-24 | 2012-06-28 | Electronics And Telecommunications Research Institute | Method for performing direct communication between terminals |
US9036550B2 (en) * | 2011-09-14 | 2015-05-19 | Electronics And Telecommunications Research Institute | Method and terminal for direct communication between terminals |
WO2013081393A1 (ko) * | 2011-11-29 | 2013-06-06 | 엘지전자 주식회사 | 기기간 통신을 지원하는 무선접속시스템에서 기기간 동기화 및 식별을 지원하는 방법 |
ES2496098T3 (es) * | 2012-05-15 | 2014-09-18 | Telefonaktiebolaget L M Ericsson (Publ) | Gestión de baliza para comunicación dispositivo a dispositivo (D2D) asistida por red |
ES2525361T3 (es) * | 2012-05-15 | 2014-12-22 | Telefonaktiebolaget L M Ericsson (Publ) | Asignación de identidad de dispositivo local para la comunicación de dispositivo a dispositivo (D2D) asistida por red |
KR101886336B1 (ko) * | 2012-09-12 | 2018-08-09 | 엘지이노텍 주식회사 | 무선 통신 장치 및 이의 무선 통신 방법 |
WO2014182341A1 (en) * | 2013-05-06 | 2014-11-13 | Intel IP Corporation | Access network discovery and selection |
US9479298B2 (en) * | 2013-07-08 | 2016-10-25 | Intel IP Corporation | Demodulation reference signals (DMRS)for side information for interference cancellation |
KR102141114B1 (ko) * | 2013-07-31 | 2020-08-04 | 삼성전자주식회사 | 단말 대 단말 통신에서 시간 동기화 방법 및 장치 |
US9648484B2 (en) * | 2013-08-09 | 2017-05-09 | Futurewei Technologies, Inc. | System and method for resource allocation for open discovery in device-to-device communications |
US9307510B2 (en) * | 2013-09-05 | 2016-04-05 | Qualcomm Incorporated | Resource allocation for distributed device-to-device synchronization |
US9918290B2 (en) * | 2014-06-27 | 2018-03-13 | Samsung Electronics Co., Ltd. | Methods and apparatus for inter-cell device-to-device communication and discovery |
US9867156B2 (en) * | 2014-08-07 | 2018-01-09 | Electronics And Telecommunications Research Institute | Method and apparatus for synchronization in D2D communication network |
US9496975B2 (en) * | 2014-09-19 | 2016-11-15 | Qualcomm Incorporated | Dynamic directional synchronization signals in wireless communications |
US20160212721A1 (en) * | 2015-01-16 | 2016-07-21 | Sharp Laboratories Of America, Inc. | Method and apparatus for selecting a synchronization signal source for sidelink communcations |
US10075930B2 (en) * | 2015-05-04 | 2018-09-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for transmitting device-to-device (D2D) synchronization signals |
-
2013
- 2013-12-20 JP JP2015547870A patent/JP6131331B2/ja active Active
- 2013-12-20 US US14/648,784 patent/US9699749B2/en active Active
- 2013-12-20 KR KR1020157018387A patent/KR20150105332A/ko not_active Application Discontinuation
- 2013-12-20 EP EP13866392.7A patent/EP2938142B1/en not_active Not-in-force
- 2013-12-20 CN CN201380067482.6A patent/CN104871614B/zh not_active Expired - Fee Related
- 2013-12-20 WO PCT/KR2013/011960 patent/WO2014098522A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040056474A (ko) * | 2002-12-23 | 2004-07-01 | 한국전자통신연구원 | 블루투스 네트웍 상의 이동통신 단말기와 주변기기 간의시각 동기 방법 및 이를 저장한 컴퓨터 판독 가능 기록매체 |
KR20100038226A (ko) * | 2007-07-09 | 2010-04-13 | 콸콤 인코포레이티드 | 피어-투-피어 통신 네트워크의 동기화 |
KR20100038441A (ko) * | 2007-07-09 | 2010-04-14 | 콸콤 인코포레이티드 | 피어-투-피어 통신 네트워크의 동기화 |
KR20090032306A (ko) * | 2007-09-27 | 2009-04-01 | 한국전자통신연구원 | 네트워크상의 타임 동기화 시스템 및 방법 |
KR20120073147A (ko) * | 2010-12-24 | 2012-07-04 | 한국전자통신연구원 | 단말간의 직접통신을 수행하는 방법 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2938142A4 * |
Cited By (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016226030A (ja) * | 2012-05-23 | 2016-12-28 | 京セラ株式会社 | セルラ通信システムにおける第1のd2d装置から第2のd2d装置への装置間(d2d)制御データの送信 |
EP3358864A1 (en) * | 2012-12-09 | 2018-08-08 | LG Electronics Inc. | Method for obtaining synchronization for device-to-device communication outside of coverage area in a wireless communication system and apparatus for same |
AU2014291045B2 (en) * | 2013-07-15 | 2018-06-14 | Samsung Electronics Co., Ltd. | Synchronization method and apparatus for device to device communication in wireless communication system |
JP2016530782A (ja) * | 2013-07-15 | 2016-09-29 | サムスン エレクトロニクス カンパニー リミテッド | 無線通信システムで装置間の通信のための同期方法及び装置 |
AU2014291045B9 (en) * | 2013-07-15 | 2018-11-08 | Samsung Electronics Co., Ltd. | Synchronization method and apparatus for device to device communication in wireless communication system |
CN111586645B (zh) * | 2014-07-30 | 2023-11-28 | 索尼公司 | 通信装置及方法 |
CN111586645A (zh) * | 2014-07-30 | 2020-08-25 | 索尼公司 | 通信装置及方法 |
JPWO2016021701A1 (ja) * | 2014-08-08 | 2017-04-27 | 京セラ株式会社 | ユーザ端末及びプロセッサ |
US11381443B2 (en) | 2014-09-02 | 2022-07-05 | Lg Electronics Inc. | Method and device for transmission of synchronization signal by device-to-device terminal in wireless communication system |
US11018919B2 (en) | 2014-09-02 | 2021-05-25 | Lg Electronics Inc. | Synchronization signal transmission method and apparatus for device-to-device terminal in wireless communication system |
US10735239B2 (en) | 2014-09-02 | 2020-08-04 | Lg Electronics Inc. | Method and device for transmission of synchronization signal by device-to-device terminal in wireless communication system |
CN106797265A (zh) * | 2014-09-02 | 2017-05-31 | Lg 电子株式会社 | 无线通信系统中用于设备对设备终端的同步信号传输方法和装置 |
WO2016036141A1 (ko) * | 2014-09-02 | 2016-03-10 | 엘지전자 주식회사 | 무선 통신 시스템에서 장치 대 장치 단말의 동기 신호 전송 방법 및 장치 |
US10454743B2 (en) | 2014-09-02 | 2019-10-22 | Lg Electronics Inc. | Synchronization signal transmission method and apparatus for device-to-device terminal in wireless communication system |
CN106797265B (zh) * | 2014-09-02 | 2018-12-28 | Lg 电子株式会社 | 无线通信系统中用于设备对设备终端的同步信号传输方法和装置 |
US11233687B2 (en) | 2014-09-02 | 2022-01-25 | Lg Electronics Inc. | Synchronization signal transmission method and apparatus for device-to-device terminal in wireless communication system |
RU2649874C1 (ru) * | 2014-09-02 | 2018-04-05 | ЭлДжи ЭЛЕКТРОНИКС ИНК. | Способ передачи сигнала синхронизации и аппаратура для терминала связи "устройство-устройство" в системе беспроводной связи |
US11671303B2 (en) | 2014-09-02 | 2023-06-06 | Lg Electronics Inc. | Method and device for transmission of synchronization signal by device-to-device terminal in wireless communication system |
US10299235B2 (en) | 2014-09-05 | 2019-05-21 | Lg Electronics Inc. | Method for performing communication between devices in wireless communication system and device for performing same |
CN105407532B (zh) * | 2014-09-12 | 2020-03-24 | 电信科学技术研究院 | 一种d2d通信方法及装置 |
EP3193552A4 (en) * | 2014-09-12 | 2017-10-11 | China Academy of Telecommunications Technology | Device-to-device communication method and apparatus |
CN105407532A (zh) * | 2014-09-12 | 2016-03-16 | 电信科学技术研究院 | 一种d2d通信方法及装置 |
KR20170043574A (ko) * | 2014-09-12 | 2017-04-21 | 차이나 아카데미 오브 텔레커뮤니케이션즈 테크놀로지 | 기기 간 통신 방법 및 장치 |
US11019629B2 (en) | 2014-09-12 | 2021-05-25 | China Academy Of Telecommunications Technology | Device-to-device communication method and apparatus |
KR101991347B1 (ko) * | 2014-09-12 | 2019-06-20 | 차이나 아카데미 오브 텔레커뮤니케이션즈 테크놀로지 | 기기 간 통신 방법 및 장치 |
JP2017528084A (ja) * | 2014-09-12 | 2017-09-21 | チャイナ アカデミー オブ テレコミュニケーションズ テクノロジー | D2d通信方法及び装置 |
WO2016049517A1 (en) * | 2014-09-26 | 2016-03-31 | Kyocera Corporation | Device-to-device synchronization signal (d2dss) management |
JP2017537536A (ja) * | 2014-10-31 | 2017-12-14 | ソニー株式会社 | ユーザ機器、通信システム、及びユーザ機器を制御する方法 |
US10117252B2 (en) | 2014-10-31 | 2018-10-30 | Sony Mobile Communications Inc. | User equipment, communication system, and method of controlling a user equipment |
CN107079506A (zh) * | 2014-10-31 | 2017-08-18 | 索尼公司 | 用户设备、通信系统和控制用户设备的方法 |
KR20170062519A (ko) * | 2014-10-31 | 2017-06-07 | 소니 주식회사 | 사용자 장비, 통신 시스템, 및 사용자 장비 제어 방법 |
CN107079506B (zh) * | 2014-10-31 | 2020-06-05 | 索尼公司 | 用户设备、通信系统和控制用户设备的方法 |
EP3213587A4 (en) * | 2014-10-31 | 2018-07-04 | Sony Corporation | User equipment, communication system, and method of controlling a user equipment |
KR101967566B1 (ko) * | 2014-10-31 | 2019-04-09 | 소니 주식회사 | 사용자 장비, 통신 시스템, 및 사용자 장비 제어 방법 |
JP2018504804A (ja) * | 2014-12-18 | 2018-02-15 | クアルコム,インコーポレイテッド | IoEデバイスの分散型同期 |
JP2018509034A (ja) * | 2015-01-22 | 2018-03-29 | クゥアルコム・インコーポレイテッドQualcomm Incorporated | マルチ無線デバイスを用いた適応スキャン |
CN106160910A (zh) * | 2015-05-14 | 2016-11-23 | 财团法人工业技术研究院 | 信号同步源装置及其通信方法和系统 |
CN106160910B (zh) * | 2015-05-14 | 2018-05-25 | 财团法人工业技术研究院 | 信号同步源装置及其通信方法和系统 |
US10091746B2 (en) | 2015-05-14 | 2018-10-02 | Industrial Technology Research Institute | Synchronization source device for synchronization coverage extension and method and system using the same |
EP3094142A1 (en) * | 2015-05-14 | 2016-11-16 | Industrial Technology Research Institute | Synchronization source device for synchronization coverage extension and method and system using the same |
WO2017077771A1 (ja) * | 2015-11-02 | 2017-05-11 | シャープ株式会社 | 基地局装置、端末装置および通信方法 |
CN106685873A (zh) * | 2015-11-05 | 2017-05-17 | 夏普株式会社 | 物理信道的配置方法以及基站和用户设备 |
CN110463123B (zh) * | 2017-03-24 | 2021-11-19 | 高通股份有限公司 | 用于缩短的传输时间间隔的动态瞬态时段配置 |
CN110463123A (zh) * | 2017-03-24 | 2019-11-15 | 高通股份有限公司 | 用于缩短的传输时间间隔的动态瞬态时段配置 |
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Publication number | Publication date |
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CN104871614B (zh) | 2019-04-16 |
KR20150105332A (ko) | 2015-09-16 |
JP6131331B2 (ja) | 2017-05-17 |
EP2938142A4 (en) | 2017-01-11 |
US9699749B2 (en) | 2017-07-04 |
EP2938142A1 (en) | 2015-10-28 |
EP2938142B1 (en) | 2018-11-07 |
JP2016504860A (ja) | 2016-02-12 |
CN104871614A (zh) | 2015-08-26 |
US20150319724A1 (en) | 2015-11-05 |
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