WO2015065014A1 - 무선 통신 시스템에서 장치 대 장치 단말의 신호 송수신 방법 및 장치 - Google Patents
무선 통신 시스템에서 장치 대 장치 단말의 신호 송수신 방법 및 장치 Download PDFInfo
- Publication number
- WO2015065014A1 WO2015065014A1 PCT/KR2014/010190 KR2014010190W WO2015065014A1 WO 2015065014 A1 WO2015065014 A1 WO 2015065014A1 KR 2014010190 W KR2014010190 W KR 2014010190W WO 2015065014 A1 WO2015065014 A1 WO 2015065014A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rpt
- signal
- transmission
- bit
- transmitted
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000004891 communication Methods 0.000 title claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 93
- 230000008054 signal transmission Effects 0.000 claims description 6
- 230000000873 masking effect Effects 0.000 description 15
- 230000006870 function Effects 0.000 description 14
- 238000013468 resource allocation Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 125000004122 cyclic group Chemical group 0.000 description 5
- 238000013507 mapping Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 4
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241000854291 Dianthus carthusianorum Species 0.000 description 1
- 241000760358 Enodes Species 0.000 description 1
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004549 pulsed laser deposition Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- H04W72/0466—Wireless resource allocation based on the type of the allocated resource the resource being a scrambling code
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
-
- 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
- H04L5/0091—Signaling for the administration of the divided path
-
- 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
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
-
- 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
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
-
- 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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
Definitions
- the following description relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting and receiving D2D signals in device to device communication.
- Wireless communication systems have been 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, OFDMACorthogonal frequency division multiple access (OFDM) systems, and single carrier frequency division multiple SC-FDMA.
- CDMA code division multiple access
- FDMA frequency division multiple access
- TDMA time division multiple access
- OFDM OFDMACorthogonal frequency division multiple access
- SC-FDMA single carrier frequency division multiple SC-FDMA.
- access system ⁇ 'MC-FDMA multi-carrier frequency division multiple access
- D2D communication is a direct link between user equipments (UEs) to establish voice, data, etc. directly between terminals without going through an evolved NodeB (eNB). It is a communication method.
- D2D communication may include a method such as UE-to-UE communication, Peer-to-Peer communication, and the like.
- the D2D communication scheme may be used for machine-to-machine communication (M2M), machine type communication (MTC), and the like.
- M2M machine-to-machine communication
- MTC machine type communication
- D2D communication has been considered as a way to solve the burden on the base station due to rapidly increasing data traffic.
- D2D communication unlike a conventional wireless communication system, data can be exchanged between devices without passing through a base station, thereby enjoying a network overload.
- the introduction of D2D communication can reduce the base station procedure, reduce the power consumption of devices participating in the D2D, increase the data transmission speed, increase the capacity of the network, distribute the load, and expand the coverage of Sal.
- a transmission and reception method related to control information and scheduling assignment signal in device-to-device communication is a technical problem.
- a first technical aspect of the present invention provides a method for a UE to transmit / receive a device-to-device (D2D) signal in a wireless communication system, and includes resource patterns for transmission (RPT).
- D2D device-to-device
- RPT resource patterns for transmission
- each bit of the RPT indicates whether to allow transmission of the D2D signal of two or more subframes.
- a second technical aspect of the present invention provides a first terminal device for transmitting and receiving a device-to-device (D2D) signal in a wireless communication system, comprising: transmission modules; And a processor, wherein the processor receives a scheduling assignment including resource patterns for transmission (RPT), transmits a D2D signal in a subframe indicated by the RPT, and each of the RPTs. Bits indicate whether to allow transmission of the D2D signal in a subframe within a scheduling allocation period. When the number of subframes included in the scheduling allocation period is greater than the number of bits of the RPT, at least one bit of the RPT is two or more. A D2D terminal device indicating whether to allow transmission of the D2D signal in a subframe.
- D2D device-to-device
- the first technical aspect and the second technical aspect may include all / parts of the following items.
- the UE may repeatedly use the RPT.
- the terminal may repeatedly use the RPT within the scheduling allocation period.
- the RPT may be used repeatedly within the scheduling allocation period.
- Some use of the RPT may be a sequential use of the RPT bit.
- the number of bits of the RPT used when the RPT is partially used may be equal to the remainder obtained by dividing the number of subframes included in the scheduling allocation period by the number of bits of the RPT.
- the terminal may receive an indication from the base station of a resource region for transmitting the D2D signal.
- the terminal may receive a resource pool from the base station to transmit the D2D signal.
- the bits of the RTP may indicate only a subframe included in the resource pool.
- the scheduling assignment may include one or more RPTs.
- the schedule rung allocation may be transmitted from a base station or a relay.
- D2D can efficiently transmit and receive control information and scheduling assignment signals.
- 1 is a diagram showing the structure of a radio frame.
- 2 illustrates a resource grid in a downlink slot.
- 3 illustrates a structure of a downlink subframe.
- 5 to 6 are diagrams for describing information included in control information.
- 7 to 9 are diagrams for explaining a resource pattern for transmission.
- 10 to 11 are diagrams for explaining the structure of a control channel.
- FIG. 13 is a diagram illustrating a configuration of a transmission and reception apparatus.
- 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 configurations or features of one embodiment may be included in another embodiment, or may be replaced with other configurations or features of another embodiment.
- the base station has a meaning as a terminal node of the network that directly communicates with the terminal. Certain operations described as being 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), and an access point (AP).
- the repeater may be replaced by terms such as relay node (RN) and relay station (RS).
- RN relay node
- RS relay station
- the term 'terminal' may be replaced with terms such as a user equipment (UE), a mobile station (MS), a mobile subscriber station (MSS), and a subscriber station (SS).
- base station refers to a scheduling execution node and a cluster header. header) and the like can also be used to mean a device. If the base station or the relay also transmits a signal transmitted by the terminal, it can be regarded as a kind of terminal.
- a cell described below applies to transmission and reception points such as a base station (eNB), a sector, a remote radio head (RRH), a relay, and the like. It may be used as a generic term for identifying a component carrier at a point.
- eNB base station
- RRH remote radio head
- 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-A LTE-Advanced) system and the 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 FDMA
- Time Division Multiple Access TDMA
- Orthogonal Frequency Division Multiple Access OFDMA
- SC-FDMA Single Carrier Frequency Division Multiple Access
- CDMA may be implemented by a radio technology such as UTRAOJniversal Terrestrial Radio Access) 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 UMTS Jniversal Mobile Telecommunications System.
- 3rd Generation Partnership Project (3GPP) LTEdong term evolution (3GPP) is part of E-UMTS (Evolved UMTS) using E-UTRA, and employs OFDMA in downlink and SC-FDMA in uplink.
- LTE-A Advanced is the evolution of 3GPP LTE.
- 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).
- IEEE 802.16e WiMA—OFDMA Reference System
- advanced IEEE 802.16m WiMA-OFDMA Advanced system
- a structure of a radio frame will be described with reference to FIG. 1.
- uplink / downlink data packet transmission is performed in subframe units, and one subframe is defined as a predetermined time interval including a plurality of OFDM symbols.
- the 3GPP LTE standard supports a type 1 radio frame structure applicable to FDE FreQuency Division Duplex) and a type 2 radio frame structure applicable to TDD Time Division Duplex.
- FIG. 1 (a) is a diagram illustrating a structure of a type 1 radio frame.
- the downlink radio frame consists of 10 subframes, and one subframe consists of two slots in the time domain. Because one subframe is TTKtransmission time interval to the time it takes for the transfer), and, for example in the length of one subframe is 1ms, may be the length of one slot it is 0.5ms.
- One slot includes a plurality of OFDM symbols in the time domain and a plurality of resource blocks (RBs) in the frequency domain.
- 3GPP LTE / LTE—A OFDM system uses OFDMA in downlink. This one symbol period is shown. An OFDM symbol may also be referred to as an SC-FDMA symbol or symbol period.
- a resource block (RB) is a resource allocation unit and may include a plurality of consecutive subcarriers in one block.
- 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).
- an OFDM symbol is constructed by a generic CP
- the number of OFDM symbols included in one slot may be seven.
- 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.
- an extended CP may be used to further enjoy inter-symbol 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
- FIG. 1 (b) is a diagram illustrating a structure of a type 2 radio frame.
- Type 2 radio frames consist of two half frames, each of which has five subframes, a downlink pilot time slot (DwPTS), a guard period (GP), and an uplink pilot time slot (UpPTS).
- DwPTS downlink pilot time slot
- GP guard period
- UpPTS uplink pilot time slot
- One subframe consists of two slots.
- the 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, the number of slots included in the subframe, and the number of symbols included in the slot may be variously changed.
- 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 N DL of resource blocks included in the downlink slot depends on the downlink transmission bandwidth.
- the structure of the uplink slot may be the same as the structure of the downlink slot.
- PDSCH Physical Downlink Shared Channel
- Downlink control channels used in the 3GPP LTE / LTE-A system include, for example, a physical control format indicator channel (PCFICH), a physical downlink control channel (PDCCH), Physical HARQ indicator channel (Physical Hybrid automatic repeat request Indicator Channel; PHICH).
- 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 includes a resource allocation and transmission format of a downlink shared channel (DL-SCH), resource allocation information of an uplink shared channel (UL-SCH), paging information of a paging channel (PCH), system information on a DL-SCH, and a PDSCH.
- DL-SCH downlink shared channel
- UL-SCH uplink shared channel
- PCH paging information of a paging channel
- system information on a DL-SCH and a PDSCH.
- Resource allocation of upper layer control messages such as random access response transmitted to the network, a set of transmit power control commands for individual terminals in a certain terminal group, transmission power control information, activation of VoIP voice over IP), and the like. It may include.
- 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).
- 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 number of CCEs required for the PDCCH depends on the size of the DCI It may vary depending on the coding rate.
- any one of 1, 2, 4, and 8 CCEs may be used for PDCCH transmission, and the DCI is large and / or channel state. If a low coding rate is required due to poor quality, a relatively large number of CCEs may be used for one PDCCH transmission.
- the base station determines the PDCCH format in consideration of the size of the DCI transmitted to the UE, the cell bandwidth, the number of downlink antenna ports, the PHiCH resource amount, and adds a cyclic redundancy check (CRC) to the control information.
- the CRC is masked with an identifier called Radio Network Temporary Identifier (RNTI) according to the owner or purpose of the PDCCH.
- RNTI Radio Network Temporary Identifier
- the cell-RNTKC_RNTI cell-RNTKC_RNTI
- the cell-RNTKC_RNTI cell-RNTKC_RNTI
- a paging indicator identifier P-RNTI
- the PDCCH is for system information (more specifically, system information block (SIB))
- SIB system information block
- the system information identifier and system information RNTKSI-RNTI may be masked to the CRC.
- random access -RNTKRA? RNT may be masked to the CRC.
- 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 PUCCH and 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.
- the CI may include one or more of the following information.
- Information included in the CI described below may be transmitted through a method described in a channel structure for a CI to be described later, or periodically through a separate channel (for example, a channel for D2D scheduling allocation).
- a channel for D2D scheduling allocation may be referred to as a D2D scheduler allocation channel (D2DSACH).
- the D2DSACH may be transmitted in a separate format in a resource region of a certain period, or may be transmitted by the UE selecting a frequency region in a predetermined subframe before data transmission.
- the D2DSACH may have a conventional PUCCH / PUSCH structure or may have a separate format other than the existing PUSCH / PUCCH structure.
- the D2DSACH may use the same as the D2D discovery format.
- the D2D discovery signal refers to a signal transmitted by a terminal to discover the presence or absence of another terminal or to notify a neighboring terminal of its presence.
- NDI and / or RV may be transmitted in a PUSCH piggyback scheme or may indicate NDI information in a DMRS CS (cyclic shift).
- DMRS CS may be set to use one of the specific values or a specific set value.
- DMRS CS may be set to use another specific value or one of the other specific set values. Can be.
- D2DSACH refers to a format of a channel transmitting SA.
- the SA may refer to a channel itself in which a whole black part of the D2D CI is transmitted.
- the scheduling assignment may include information described below.
- the terminal selects a resource for transmitting the scheduling assignment from the resource pool except the scheduling assignment and transmits the scheduling assignment through the resource the scheduling assignment may include information described below.
- the location of the resource (where the D2D data can be transmitted) may indicate only time and the frequency location may be implicitly indicated in conjunction with the location where the CI or SA is transmitted. Or the location of time and frequency resources may be explicitly indicated.
- the position of the frequency resource explicitly indicates the position of the first transmitted frequency resource, and the position of the frequency resource thereafter may be transmitted according to a preset frequency hopping pattern.
- the location of the time resource may be transmitted by including a bit sequence in the SA that explicitly indicates the location of the resource on which the D2D signal is transmitted.
- the resource allocation information may refer to a resource patterns for transmission (RPT), and in the following description, RPT may mean a T-RPT among resource patterns for transmission. If the following T-RPT is used, the frequency resource region may have a specific hopping pattern on a subframe indicated in the T-RPT after being indicated in the first transmission.). That is, it may be a bit for indicating a resource transmission pattern. If the length of the ID is long, or if the number of 'required' RPTs is small (for example, the number of D2D subframes is below a certain threshold or the number of transmissions is below a certain threshold, or the ID alone can indicate the RPT). It may or may not be padded with a specific state (eg, all zero). More detailed RPT will be described later.
- RPT resource patterns for transmission
- the RA information may be transmitted in a separate control channel separate from the data to indicate resource allocation information of the data channel.
- a D2D control channel (hereinafter, referred to as a D2DCCH) similar to a PUCCH may be defined at both ends of the main ⁇ band (or predetermined or In the configured specific subframe and RB location), and this D2DCCH includes an RA field of a specific UE, such as + n subframe after the next slot (or subframe) or a certain slot (or subframe).
- slot where n may be predetermined or configured by a node that manages scheduling between an eNB or a D2D UE), and may indicate a frequency resource region in which D2D data is transmitted.
- the D2D receiving UE may blindly decode the region where the D2D CI is transmitted to obtain RA information.
- the RA information may be obtained by energy detection whether the D2D CI is a transmission area.
- a unit capable of transmitting D2D data may be subchannelized into a specific specific RB unit.
- the information on the D2D subchannel is periodically transmitted as included in the D2D synchronization channel, the D2D system information channel, or the D2D broadcast channel, so that the D2D receiving UE decoding the D2D subchannel may know before receiving the D2D data.
- a frequency band for transmitting the D2D CI may be different from a frequency band of the data.
- the frequency band of the D2D CI may always be limited to within 6RB.
- the D2D CI is mapped to a specific symbol. All REs of the entire system BW may be used for D2D CI mapping.
- the BW may be configured to transmit the D2D CI from the D2D sync node or the cluster head in advance. In this case, a predetermined set of symbols around the DMRS may be used as a symbol for transmitting a D2D CI.
- the D2D CI may map a continuous set of REs to CIs of one D2D link. In this case, when the RE of one UE exceeds one symbol, the D2D CI may be configured by continuously selecting the RE from the next symbol. UEs receiving the D2D CI format may blind-decode a symbol in which the D2D CI is transmitted, and determine an area to which D2D data is allocated in other symbols.
- an MCS used for transmitting and receiving a D2D related signal (eg, a D2D communication packet, etc.) in a scheduling assignment period may be included in the CI or SA. Or, it may be information indicating the MCS of the currently transmitted data.
- D2D public safety or specific broadcast service can be received by a large number of UEs (low MCS index, e.g. MCS 0). It may be limited to using only MCS or using only a part of MCS enhancement (for example, MCS indexes 0 to 9 using only QPSK modulation), which is a modulation technique used when a terminal transmits and receives a signal with a base station.
- 64QAM may be left unused and 'reserved state'.
- the D2D may use an MCS indication bit length shorter than the MCS indication bit length used in the existing PUSCH.
- the existing MCS indication bit number is used as it is, but for the MCS bit that is not used may be used to indicate the other D2D CI, or may not be used for any purpose and remain in the 'reserved state'.
- ID information of the transmitting terminal (group) and / or the receiving terminal (group) may be explicitly included in the CI or SA. That is, by including the ID information associated with the terminal using the CI or SA, the terminal can know whether the CI or SA is for it can reduce unnecessary decoding. In other words, if a specific UE that receives the D2D signal is not data transmitted by the UE desired by the UE, the UE does not decode the data packet thereafter, thereby reducing battery consumption.
- a D2D ID may include a packet ID (application, group).
- a packet or an application or group ID is a case in which one UE transmits several different packets, one UE transmits data in parallel while belonging to several groups, or one UE generates and transmits D2D packets in different applications. In this case, it is transmitted from the same UE but different IDs are included because there is a possibility of transmitting different packets. Meanwhile, the transmitted Tx UE ID or Rx UE ID or group ID is used to scramble D2D packets transmitted after SA. It can be used for initialization of something, DMRS base sequence determination, DMRS CS / OCC determination, and so on.
- the ID may be important information in determining whether to combine when retransmitting. For example, in a situation where multiple UEs transmit D2D data at the same time, if a UE that has received certain data attempts to combine it with a log likelihood ratio (LLR) value in the HARQ buffer because it was previously received but could not be decoded, Combining the data received from the data may degrade the data reception performance.
- LLR log likelihood ratio
- This UE ID information can also be used for data scrambling initialization and DMRS base sequence configuration.
- the ID information may include a service ID (or an application ID). if the service (or application) ID is not obtained in the discovery step (this may be the case for the D2D signal broadcast without discovery), the service ID may be information important for data decoding with each other, like the UE ID. For example, in a situation where a UE transmits data through several applications (for example, transmitting voice while transmitting voice for public safety purposes), even if the UE iD is the same, different data may be combined in retransmission. It should not be.
- the D2D data receiving UE may determine whether to combine after detecting the service ID and the UE ID.
- the above-mentioned ID information may be included in the D2D CI or SA as it is, but may be included in the CI or SA through a sequence generated through a hash function alone or by combining different IDs for efficient use of resources.
- the UE ID and the service ID are included in the D2D CI in the form of a sequence indicating each shortened ID through a separate hash function, or the ID information is used as an input value of one hash function together to shorten one ID. A sequence indicating may be generated.
- the ID can be transmitted more efficiently by including a shorter sequence through the hash function without loading the ID into the D2D CI.
- the ID may be transmitted after the ID indicated in the upper layer is converted into the physical layer ID in one of methods such as hashing, truncation, and direct use.
- a plurality of the above-mentioned IDs are combined, and a part of the ID included in the SA may be derived from a specific ID, and the other part may be generated by being derived from another specific ID.
- the T2 UE may include the Tx UE ID and the Rx UE ID in the ID field.
- the TX ID and the RX ID are transmitted to the D2DSACH as 8 bits, respectively, and the 16 bits connected to the TX ID and the RX ID can be used to initialize the scrambling sequence.
- the Rx UE ID may not be used. In this case, the Rx UE ID part may be set to a specific bit sequence set in advance.
- an 8b ID sequence derived from a transmitting UE ID may be transmitted in a D2DSACH, and an Rx UE ID may be set to 00000000.
- the Rx UE ID portion may be set as a group ID.
- all or some of the (physical layer) IDs included in the SA (D2DSACH) and transmitted may be randomly selected by the transmitting UE. In particular, only a part corresponding to the transmitting UE ID may be selectively selected and transmitted.
- the physical layer ID may be generated from an upper layer ID, and the upper layer ID may be used as a seed value of the random sequence generator.
- a random ID may be generated regardless of the upper layer ID.
- the reason for randomly setting the ID included in the SA is to minimize the collision between the scrambling sequence or the DMRS between the terminals when generating the scrambling sequence or selecting the DMRS sequence through the ID. Or, if the RPT is defined by ID, it is to prevent the collision between RPTs.
- i) randomly set for each SA transmission period ii) randomly maintains an ID for a predetermined SA period, and randomly varies an ID only after a predetermined period, and Hi) continuously for a randomly determined ID.
- the ID may be randomly selected again only when the transmitting UE recognizes that the ID is inappropriate due to feedback or resource sensing from a specific UE or base station.
- the X bit ID is included in the SA. This ID may be randomly generated.
- the target or purpose ID may be transmitted in a form of masking the CRC of the SA.
- the ID information transmitted in the SA described above may be used for CRC masking to confirm whether D2D data or D2DSACH is properly received.
- the ID of the D2D synchronization signal may also be used.
- the D2D registered signal ID means an ID of a synchronization signal transmitted / relayed by a corresponding node when a specific UE or eNB transmits a D2D synchronization signal. For example, if the D2D synchronization signal reuses the existing cell synchronization signal, there may be about 500 IDs.
- a part of the CRC masking bit may be masked into a hashed sequence of (signaled) IDs indicated in a physical layer or a higher layer, and the other part may be masked with a hashed sequence of another specific ID.
- a 24-bit CRC bit For example, suppose there is a 24-bit CRC bit. N predetermined bits are masked by a hashed sequence from the UE ID, and the remaining 24-N bits are hashed by a sequence hashed from the service or group ID. Can be masked.
- the CRC bit may be double masked by 24-bit bit sequences hashed from multiple IDs (eg, CRC bit XOR hashed UE ID sequence »3R hashed service ID sequence). .
- the above-mentioned ID for CRC masking may use a predetermined hash function, but the CRC is obtained by obtaining a 'truncated bit string' at a predetermined position from an ID indicated in advance in a physical layer or a higher layer. Can be used as a masking bit sequence.
- a position for trunking the ID in the physical trade-off or higher layer signaled ID may be predetermined. For example, when the Tx UE ID and the target ID are indicated as higher layers, some bits of each ID may be taken to generate a bit sequence for the CRC mass 3 ⁇ 4.
- the bit sequence length for CRC masking and the length of the ID included in the control channel may be different from each other. Therefore, the method of truncation / hashing in the ID indicated by the higher layer for CRC masking may be different from the method of higher layer ID truncation / hashing for generating an ID to be transmitted by being included in the D2D control channel.
- a transmission ID (source L2 ID) indicated in the upper layer, a destination L2 ID, and a synchronization source ID All or part of them may be used.
- the conversion from the higher layer ID to the physical layer ID may be different from each other according to groupcast / broadcast / unicast. For example, in case of broadcast, only source ID is generated to generate physical layer ID bit sequence, and in case of groupcast / unicast, both source ID and group (destination) ID are generated to generate physical layer ID bit sequence. can do.
- the broadcast uses only the source ID to generate a physical layer ID bit sequence, where all the physical layer ID bit sequences may be generated from the source ID, and some physical layer sequences may be a source, a group, or a transmission ID.
- Hashing / truncation from the rest of the physical layer ID sequence can be generated by setting a fixed value (eg all zeros or all ones) in advance.
- a physical layer ID sequence is generated using both a ProSe L2 source ID and a ProSe L2 group ID as a target (purpose) ID.
- a bit string can be specified and used as the broadcast ID, and the remaining physical layer ID sequence can be set to all zero.
- the bit sequence for CRC masking of SA may be masked using all or part of a sync source ID, a destination (specific UE or specific UE group) ID, a source (Tx) ID.
- a sync source ID For example, using the sync source ID and destination ID, some bits of the CRC You can mask using ID hashing / truncation / directly, and some may mask using Hashing / Trunction / directly from destination ID.
- CRC included in SA uses synchronous source ID. Can be masked.
- the rest is padded with zeros, or the sync source ID is repeatedly filled, and the remaining bits are bit sequences for indicating the number of antenna ports (CRC depending on the number of APs. mask may be masked).
- the above-mentioned CRC may be a CRC for determining whether the control information is properly transmitted in the corresponding channel, or a data channel linked to the control information. It may also mean a CRC for determining whether the (physical layer signal in the area where data is transmitted) is properly transmitted.
- the CRC length for checking whether the D2D CI or SA is properly received and the CRC length for checking whether the data is properly received may be different from each other.
- the CRC length may be 16 bits, and in the data, the CRC length may be 24 bits.
- a method of generating a bit string for masking in SA and a method of generating a bit string for masking in data may be different.
- an SA (or data) generates a bit string for CRC masking using both a source (or Tx) ID and a destination ID (Rx or target ID), whereas the ID of the data (or SA) or Tx) ID, or destination (UE or group) ID or sync source ID, or a combination of two or more than two IDs can be used to generate a bit string for CRC masking.
- NDI for distinguishing retransmitted data and newly transmitted data may be transmitted.
- the NDI may be transmitted in the form of 1-bit information, but may be transmitted in a new form in combination with a UE TX or RX ID or other control information (such as A / N or CQI).
- the UE TX and / or RX ID and / or the application / service ID and the NDI may be used together as input values of a predefined hash function, and this result may be transmitted to the D2D CI.
- the NDI field is extended to M bits, and when a UE sends new data, a specific random number is M.
- One of the numbers that can be represented by the bit can be selected and transmitted, and when data is changed, another random number can be selected and transmitted. This is for a UE receiving D2D data from a plurality of terminals to distinguish data from a corresponding terminal from data from another UE in a situation of decoding data from a specific terminal and data retransmitted.
- the AP (antenna port) number and / or MIMO scheme and / or precoding information and / or precoding granularity, etc., for when multi-layer transmission or diversity transmission using multiple antennas are allowed in D2D. Or SA.
- This information may be transmitted in a separate field.
- it may be implemented in a form of indicating a specific MIMO scheme or the number of ports in CRC masking of the data area.
- it may be configured to always transmit as a subframe when the number of APs is 2 or more and FSTD when the AP is 4. This is because D2D is more severely affected by interference than cell environment, so it is always to use a diversity scheme to enable more reliable transmission and reception.
- precoding information may be included in the D2D CI.
- the precoding information and the tank information may be separately included in the D2D CI, or PMI and RI may be represented as one information for efficient use of resources.
- precoding if the number of APs is 2 or more, precoding is applied, but random precoding may be applied.
- the precoder may change in units of time or frequency.
- the granularity in which such precoding changes may be predetermined, and a rule may be set such that random precoding (precoder / bum cycling) is always used when the number of APs is 2 or more.
- the number of APs, and / or precoding information, and / or MIMO scheme may be included.
- the particle size of the time-frequency resource with the same pre-coding is included in D2DSACH can 'be transmitted.
- they may not be included or padded with zeros.
- the number of APs may not be separately indicated, but may be indicated in a form in which masking is changed according to the number of ports. [80] f. RV (Redundancy version)
- RV When HARQ retransmission is introduced in D2D data communication, RV may be included in CI or SA. However, when the RV is transmitted in a predetermined order (for example, RV 0-> 2-> 3-> 1) like the current LTE uplink, the RV may not be included even if HARQ retransmission is used. . Alternatively, it may be combined with the above-mentioned D2D CI or SA information enhancement specific information and mapped to the RE, or some fields of the D2D CI may be used for indicating RV (for example, 2 bits). For example, when some state of the MCS field is not used for the D2D, the RV may be transmitted by borrowing a portion of the MCS field. Alternatively, when the RV is transmitted in a separate field, the RV and the NDI may be combined to be represented as one state on the constellation and may be mapped to the control channel.
- a predetermined order for example, RV 0-> 2-> 3-> 1
- the RV may not be included even if HARQ re
- DMRS Demodulation Reference Signal
- the base sequence of ZC is preferably determined based on cell ID.
- a base sequence having an ID different from the cell ID may be used to distinguish the cell from the cell.
- the DMRS base sequence may be directly indicated between the D2D UEs or a predetermined base sequence may be used.
- a DMRS cyclic shift, a DMRS base sequence ID, a DMRS group / sequence hopping, a length, and 0CC may be included in the D2D CI and directly indicated.
- the DMRS for decoding the D2D CI may be defined differently from the DMRS of the data.
- the DMRS format for decoding the D2D CI may use a predetermined DMRS format.
- the D2D CI may be coded using differential coding that can be decoded without DMRS.
- a hopping flag and a NULhop may be included in a CI or an SA and transmitted.
- the corresponding bit may not be included or may be a specific state (eg, all zero padding).
- the system bandwidth and / or the band available for D2D is configured to be relatively small below a certain threshold, the above information may not be included in the CI or SA. Frequency hopping if the frequency domain is small You can hardly gain.
- the CP length may be indicated in the D2DSACH.
- the CP length of the D2DSACH itself should be determined.
- One of the following methods may be used. i) The CP length used in the D2DSACH may be signaled by an upper layer (eg, RRC signal) or a physical layer signal (SIB or (E) PDCCH) in advance.
- the CP length used in the PSS / SSS of the serving cell may be used as the CP length of the D2DSACH.
- a predetermined CP length may be used. One of the extended CP and the normal CP may be fixed in advance.
- CP length may be indicated by a synchronous source, ie by D2DSS or PD2DSCH.
- the extended CP may be used as a base. If the synchronization source is shown in the diagram, the CP length indicated by the D2DSS or PD2DSCH transmitted by the synchronization source is used. Afterwards, when the signal of the eNB is observed around, the CP length indicated by the PSS / SSS of the eNB is used. After that, when the eNB can smoothly receive the indication, the CP length for the D2DSACH indicated by the eNB is used. In other words, if a CP length for a preset D2DSACH is set, and an explicit signal indicating another sync source or CP length is received, the CP length may be used as a rule.
- the CP length of the data indicated by the D2DSACH may be indicated by transmitting a bit indicating the CP length in the D2DSACH.
- the CP lengths of the D2DSACH and the D2D data may be different from each other.
- a separate bit may be included and transmitted, but may be transmitted by borrowing a state not used by another field.
- the CP length used in the D2DSACH may be used as it is.
- the CP length used by the D2DSACH is used as the CP length of data.
- the UE receiving the D2D signal may detect the CP length by blindly detecting the RS interval of the D2DSACH or the D2D signal, or determine the CP length of the data by detecting the CP length of the synchronization source or eNB to which the D2DSACH is linked. have.
- a bit field not used among the above-mentioned CI information is not fixed to a specific state and may be used for other purposes. For example, if frequency hopping is not used, this field may be used for indicating RPT.
- the following information may be included in the CI or SA as information not related to data demodulation.
- ACK / NACK may be included in a D2D CI only for a specific service. For example, in case of information broadcast in an emergency situation, D2D data communication can be performed without A / N for fast information spread. However, in the case of social network D2D service, it can enable stable data communication including A / N.
- CQI feedback may be omitted in the service.
- the MCS may return the CQI for the purpose of setting the Tx power even though it is fixed.
- the CQI bit used may be lbit and may be included in the D2D CI to determine whether the threshold is exceeded in advance.
- PMI and RI may also be included in the D2D CI.
- the transmit power of the D2D data transmission UE may also be included in the D2D CI.
- the D2D receiving UE can determine how much power to reach the transmitting UE by using the power of the channel reciprocity.
- the UE Tx power may help the D2D receiving UE to set the transmit power.
- the D2D TPC may also be included in the D2D CI.
- the bit field size of the TPC may be represented by 2 bits or a larger bit size may be configured if necessary.
- a scheduling request between D2D UEs is a warning signal for requesting resource allocation to a predetermined (or randomly selected) specific UE or using a specific resource first in a situation in which it is difficult to connect with an eNB such as out of network coverage or partial network coverage. It can be used in the form.
- D2D CI may be transmitted in a separate D2D control channel format, and others may be multiplexed and transmitted in the D2D data channel.
- information such as RA may be indicated on a separate control channel, and the remaining information (NDI, MCS, etc.) may be implemented in a form of being piggybacked on a data channel.
- information related to demodulation of data for example, RA, MCS, NDI, RV, ID, etc.
- some are related to feedback CQI, PMI, A / N, etc.
- information eg SR
- information related to data demodulation and information not related to data demodulation may be transmitted in different formats.
- some or all of the information related to data demodulation are piggybacked and transmitted in data, and feedback related information is transmitted in a separate format. Can be.
- the CI or SA may include an RPT which is a combination of time / frequency resources of resources used by the transmitting UE.
- RPT may mean, in particular, T-RPT among resource patterns for transmission. If the following T-RPT is used, the frequency resource region may have a specific hopping pattern on the subframe indicated in the T-RPT after being indicated in the first transmission.
- a D2D signal may be received in a frequency resource (eg, a subframe).
- the bit sequence indicated by the ID field and the RPT field may be a simple bitmap of a subframe in which a D2D signal is transmitted in a subframe after SA transmission.
- the position where bit is 1 may be a subframe index (possibly) to which the D2D signaling UE transmits the D2D signal.
- the term RPT indication bit sequence is used, and the RPT bit sequence may consist of only an ID included in the SA.
- the ID + RPT bit sequence may be interpreted as an RPT indication bit sequence. Instructing SAs to RPT Independent of ID There may be a bit sequence for this, in which case the RPT bit sequence may be interpreted as an RPT indication bit sequence.
- a set of bit sequences used for indicating an RPT while being transmitted in an SA may be interpreted as an RPT indication bit sequence.
- the length of the bit sequence for indicating the RPT of the transmission period of the SA or the SA allocation interval (the number of D2D subframes configured between the SA transmission intervals) is different, processing for this may be problematic. For example, if there are L D2D subframes between the SA allocation / transmission periods, and the number of bits for indicating the RPT is M bits (here L), how to indicate the transmission pattern in the remaining LM subframes is shown. It can be a problem. In this case, if the length of the RPT indication bit sequence is M, the remaining L subframes simply repeat M bit sequences to fill the remaining subframes. If L is not a multiple of M, the RPT can be generated by sequentially filling the remaining bit sequences.
- the terminal may repeatedly use the RPT within the scheduling allocation period. If the number of subframes included in the scheduling allocation period is not a multiple of the number of bits of the RPT, only a part of the RPT is used (sequential use of the RPT bits) for the last iteration of the RPT.
- the number of bits of the RPT used when the RPT is partially used may be equal to the remainder obtained by dividing the number of subframes included in the scheduling allocation period by the number of bits of the RPT.
- the RPT indication bit sequence represents a bitmap of the first M subframe
- the bitmap of the subsequent subframe is another RPT from the bitmap of the first M subframe.
- the RPT for the L subframe is generated by hopping with an indication bit sequence to fill the remaining subframes. More specifically, when the RPT indication bit sequence is pre-indexed and the RPT indication bit sequence for the first M subframe is indicated through SA, the remaining LM subframes are assigned to the remaining D2D subframes with a predetermined index hopping pattern. To generate an RPT for That is, by hopping the RPT over time Diversity gains can be obtained or collisions can be randomized.
- the above schemes may be extended and applied to the same principle even when the transmission period of the SA and the number of subframes indicated by the RPT indication bit sequence are different. Even if the RPT indication bit sequence is not a simple bitmap, the remaining D2D subframe length M indicated by the RPT indication bit sequence is smaller than the subframe interval L at which SA is transmitted (the number of D2D subframes between SA transmission periods).
- the above schemes can be applied to generate the RPT for the LM subframe.
- the bit sequence is M—out-of-N code (N binary codewords). Among the bits, only M bits are set to 1 and the rest are set to 0. These codewords may generate the same codeword with the Hamming weight of all codewords being M).
- the RPT set of M weights is ⁇ , ⁇ , ⁇ , ⁇ -1 ⁇ , which can be represented as a binary bit sequence of length rPT N
- M-out The position of 1 in the ⁇ _ ⁇ code indicates the position where data is transmitted, and 0 indicates that no data is transmitted.
- each bit sequence is mapped to a subframe index of the D2D resource pool and 1: 1, all 1 positions are used to indicate a subframe in the resource pool, and 1 in the group of subframe indexes and RPT is 1:.
- the position of 1 is used to indicate the subframe group index in the resource pool. For example, when a subframe is bundled and a D2D signal is transmitted, the bundled subframe may be interpreted as 1 of bit sequence.
- the following RPT set may be represented as a codeword of M-out-of-N code.
- RPT set (0011, 0101, 0110, 1001, 1010, 1 KX) ⁇
- the RPT set is as follows.
- RPT set ⁇ 00111, 01011, 01101, 01110, 10011, 10101, 10110, 11001, 11010, 11100 ⁇
- K1 may be used instead of all of the K RPT set indexes. This is done by the RPT bit field (including the ID field) contained in the SA. This could be the case when the size could not represent all the RPT sets, and it is necessary to select K1 from K RPT sets.
- the original codeword set of the M-out-of-N code is called an RPT mother set.
- bit sequences in the set are assumed to be indexed using the following rules.
- ⁇ represents the r th RPT sequence
- This indexing method can be interpreted that each bit sequence in the set is indexed in the order of smallest size when converted to decimal. This is for convenience of description and the concept of the present invention can be extended even if the order is indexed in the reverse order. It is important to index each bit sequence so that the Hamming distance between the two sequences is minimized. This is to make the Hamming distance also increase when the index difference increases when the subset is selected at a certain interval after selecting the subset in the mother set.
- the indexing order may be set to the sequence selection order described below. If the indexing order is a sequence selection order, the RPT subset may select K1 in the index order.
- the following methods may be used as a method of selecting K1 ( ⁇ K) indices from a set.
- the subset configuration may be signaled by the network or a preset subset may be used.
- the K 1 set index may be delivered to the D2D UE through a higher layer signal or may be a preset set index. [122] as the index sequence from base set may generate a "subset by the Tech line K1 bits when mwonseu.
- bit sequences may be selected at equal intervals in the mother set.
- the subset size K1 is not a divisor of the parent set size K, the equal interval selection rule is ambiguous.
- the following method may be used.
- the above-described method is a method for selecting the subset to be spaced apart as much as possible when selecting a subset in the set.
- the bit sequence selected in the proposed scheme has a maximum minimum hamming distance. .
- a predetermined offset « may be applied when selecting a subset from the mother set.
- the bit sequence is selected at equal intervals in the mother set, but by applying a predetermined offset.
- the offset value ranges from 0 to floor (K / Kl) -l.
- the offset value may be a preset value.
- the offset value may be a value configurable by the eNB or another UE. For example, the eNB may instruct a particular UE or UE group to use a particular offset value.
- the offset value from the sync source ID may be linked to use different RPTs among sync groups.
- a specific RPT when determining a specific RPT, a specific RPT may be determined based on an ID and an RPT bit field included in the SA. At this time, when the ID is hard to change and the RPT bit field is relatively easy to set by the transmitting UE, the RPT set may be grouped based on each bit field.
- the grouping of the RPT set may be one of three methods shown in FIG. 8. have.
- the ID length included in SA is N, and the RPT set size is K1.
- RPT indication bit included in the SA may be used to indicate which group the RPT of a specific UE belongs to.
- the role of the ID field is to identify which RPT in the group. This is used to indicate whether to use the RPT indication bit, and to indicate different RPTs as much as possible through the RPT indication bit. To do this.
- the ID length included in the SA is N
- the ID is used to designate an RPT group and the bit sequence of the RPT field is used to designate a specific RPT in the RPT group.
- the subframe indicated by the RPT indication bit sequence may indicate a general subframe without distinguishing between a D2D subframe and a non-D2D subframe.
- the subframe index to which the actual D2D signal is transmitted may be indicated by performing a logical AND operation on the D2D subframe indication bit and the RPT indication bit sequence.
- the RPT described above may be indicated in the manner described below.
- the D2D SA grant may indicate an ID and an RPT bit transmitted in the SA.
- the ID sequence included in the SA and / or the sequence of the RPT bit field included in the SA may be explicitly included in the D2D grant (a bit field for indicating a specific ID and / or RPT). Or hash the bit sequence of the D2D-RNTI, or use some bits (for example, the lower N bits) to identify the ID sequence to be included in the SA and / or the RPT bit field to be transmitted in the SA. Can be generated.
- the D2D-RNTI refers to an ID signaled in advance to distinguish the D2D control information from other control information.
- the RNTI is used to mass the CRC of the D2D control information.
- a part of the ID transmitted in the SA may be generated from the RNTI, and the other part may be generated based on the target ID (or group ID).
- the ID transmitted in the SA may vary according to time. In this case, only the Tx UE ID part may vary. This is because when the hopping up to the target UE ID part is not properly detected, the target UEs cannot perform the detection. If the target UE knows the hopping pattern of the target UE ID part, all ID sequences included in the SA may hop with a certain rule.
- the variability (hopping) of the ID sequence over time may be implemented by setting the bit field differently in the D2D grant directly by the eNB, or the ID sequence may be changed through a specific rule after the D2D grant of the eNB.
- an ID sequence in a D2D grant is used as an initialization parameter of a random sequence, and a sequence variable according to time can be generated using the random sequence generated through this.
- an ID may be transmitted through the SA and used to determine the RPT.
- the ID may be a short length ID derived from an ID at the upper layer (sending and / or receiving (target, group) ID) or may mean a bit sequence used to set a transmission position and scrambling parameters of data. have. If the length of the ID included in the SA does not make many RPT candidates, the probability of generating a collision among the IDs increases, and in this case, multiple Tx UEs may use the same RPT. In order to prevent this, it is proposed to include a bit indicating a specific RPT in some bits of the SA.
- a bit of the ID bit field and the RPT field may be combined in the SA to indicate a specific RPT.
- the ID included in the SA may be used to designate an RPT set
- the RPT indication bit included in the SA may be used to designate a specific index in the set.
- SA The included RPT bit is used for indicating a specific RPT set in a resource pool
- an ID included in SA may be used for indicating a specific RPT in a pool / set indicated by the RPT bit.
- a bit for indicating the RPT set may be transmitted semi-statically rather than every SA.
- a bit for indicating an RPT set may be transmitted for every nth SA or may be used for virtual CRC assuming that the contents do not change during n SA transmissions even if transmitted for every SA.
- the RPT bit is not included separately but may be transmitted by borrowing an unused state among the MCS bit or other SA bit fields.
- it may be used to indicate an RPT pattern by using a state that is not used among the bit and other bit fields included separately.
- the size of the RPT bit used for the indication of the SA may vary according to the group size of the D2D UE or the number of Tx UEs in the group. For example, when there are N groups of police officers, the size of the bit to indicate RPT is set to log2 (N), and the remaining unused bits can be used for other purposes or set to 0 for virtual CRC purposes. have.
- mode 1 and mode 2 may have a different ID setting method.
- Mode 1 only the Tx UE ID is used to indicate the RPT, while in Mode 2, both the Tx UE ID and the target UD ID (group) ID can be used to indicate the RPT.
- Retransmission Time Information of Each Transport Block This information may be expressed differently by how many TBs will be transmitted within one transmission opportunity, and in this case, the retransmission count for each TB is the transmission opportunity size / It can be calculated as the number of TBs transmitted by one SA. Or, it may be expressed as information on how many (maximum) repetitions are to be performed for each TB.
- the information may be preset or configured by the network. In the case of an out of coverage UE, the information may be preset or signaled as a physical layer or higher layer signal from another UE in the network. Also Some of the information may be included in the SA and transmitted. For example, the transmission opportunity size may be preset or configured by the network. In this case, the retransmission number for each TB may be included in the SA and transmitted. On the contrary, the information about the transmission opportunity size is included in the SA and transmitted, and the retransmission number may be a preset value or a value semi-statically indicated by an upper layer signal by the network.
- an SA includes an 8-bit ID and is transmitted
- the number of RPTs that can be distinguished by ID is 2 ⁇ 256.
- the number of subframes in the mode 2 resource pool is 16 and the transmission opportunity size is 8
- an additional bit for indicating the RPT may be included in the SA and transmitted in the aforementioned manner. In this embodiment, an additional bit of about 6 bits is required to distinguish all possible RPTs, which may be indicated by a combination of an unused MCS state and a new bit field or may be indicated by a separate additional bit field.
- the CIs described above may be transmitted through a channel having a structure such as a PUCCH type PUCCH piggyback type or a new channel structure (eg, D2DSACH).
- a channel having a structure such as a PUCCH type PUCCH piggyback type or a new channel structure (eg, D2DSACH).
- a new channel structure eg, D2DSACH.
- the structure of the PD2DCCH Physical D2D Control Channel
- the PD2DCCH may be called a D2DSACH or SA.
- the PD2DCCH may be configured as a PUCCH type.
- the PUCCH type is basically likely to be transmitted in a subframe or slot separate from the D2D data.
- the position at which the D2D CI is transmitted may be set to a region in which D2D control signals are transmitted by the number of RBs configured as the D2D control channel transmission region at a specific position (for example, a boundary portion) of the frequency band similarly to the PUCCH region. .
- the D2D signal transmitting UE is a UE that allows simultaneous PUSCH / PUCCH transmission
- the D2D CI and the D2D data may be transmitted together in the same slot or subframe.
- the information included in the control channel may be part or all of the above-mentioned D2D CI items.
- This structure is transmitted separately from the D2D data channel. Therefore, an RA indicating resource allocation information of the D2D data channel may be included. It may also include MCS, NDI, and the like. Alternatively, only the RA may be transmitted in a separate area from the data, and other CIs such as MCS and NDI may be multiplexed in the data area.
- the format for transmitting this is likely to follow PUCCH format 2 or PUCCH format 3. This is because formats 2 and 3 are designed to transmit more bits than formats 1.
- the present invention does not exclude transmission of D2D CIs in the same form as PUCCH format 1 1
- the size of the D2D CI transmitted separately from the D2D data is small or one UE may occupy a plurality of PUCCH format 1 resources. Because.
- a UE may transmit a D2D CI (which may include RA, MCS, NDI, etc.) to be transmitted in a format after encoding.
- the PUCCH index to be used is selected from one of N candidate positions (eg, configured with RRC) that are linked with the CCE index of the control channel indicated by the D2D scheduling node (eNB or a specific UE) or previously indicated by the scheduling node. Can be sent.
- the process of selecting one of the candidate positions previously instructed by the scheduling node may be indicated by the scheduling node directly (for example, in the DCI, the usage position of the PUCCH resource may be indicated by using a TPC field or another field). May be received or may be selected by the UE.
- a UE may use a plurality of PUCCH indexes for D2D control channel transmission. For example, one UE may perform D2D control channel transmission by occupying M PUCCH indexes.
- 10 (a) shows an example in which two PUCCH indexes are used for one D2D CI transmission purpose.
- the M PUCCH indexes may be mapped to a D2D CI of a UE in a predetermined order. The reason why a UE uses a plurality of PUCCH indexes is that the size of the D2D CI may exceed the number of bits that a PUCCH index can contain.
- the format may have a PUCCH form, but the position where the D2D control channel is transmitted may be a specific PRB pair predetermined in the PUSCH region of the D2D data.
- the first (or last) PRB pair of the RB through which the D2D data is transmitted may transmit a D2D control channel having a PUCCH type.
- the first PRB of the position of the D2DCCH for each D2D subframe You can use the pair alternately with the last PRB pair. (To obtain frequency hopping effect of D2DCCH)
- FIG. 10 (b) shows an example in which the first PRB pair in each D2D subchannel is set as a D2D CI transmission channel.
- This method has a PUCCH format to maintain a single carrier property, but transmits a D2D CI in a PRB pair contiguous with the D2D data area.
- Information included in the D2D control channel may likewise include some or all of the above-listed information.
- the PD2DCCH may be configured as a PUSCH piggyback type.
- D2DCI may be transmitted by puncturing or rate matching some REs in the data area.
- RE can be used for D2D CI mapping in a time direction sequentially from a low virtual subcarrier index in the RB, as in the case of transmitting CQI / PMI in the existing UCI piggyback.
- some of the symbols of the edge of the subframe may not be used due to Tx / Rx switching. Therefore, when the D2D CI is piggybacked in the D2D subframe and the D2D CI is mapped from the low subcarrier index to the 'time first' similarly to the CQI / PMI, the following operation may be performed.
- the first and / or last symbol may be excluded from the D2D CI mapping. This is because the first or / and last thimble is likely to be used as a guard interval with Tx / Rx switching. In addition, after the guard interval, some samples may not be used for data reception for AGC training. Therefore, in this case, the D2D CI is preferably not mapped to the symbol including the guard period. In some cases, since one or more symbols are more likely to be used for the guard interval and the AGC training, the symbol to which the D2D CI is mapped according to the guard interval and the AGC training interval may be configured in advance.
- a symbol to which a D2D CI can be mapped may be included in a D2D synchronization channel, or may be configured or defined in RRC.
- D2D CIs are mapped only to fully usable symbols, but in the case of D2D data, they may also be mapped to partially punctured symbols.
- the D2D data may be mapped only to SC-FDM (or OFDM) symbols that are fully usable like D2D CIs, and only reference signals may be mapped to symbols that are partially punctured due to Tx / Rx switching.
- a rule may be determined such that a reference signal is embedded in the first and / or last symbol only when the D2D CI is piggybacked in the D2D data area. This is to improve the decoding capability of data and control information by increasing the channel estimation accuracy when the D2D CI is transmitted together.
- the D2D CI may be mapped only to even (or odd) subcarriers of the first and / or last symbols.
- This structure maps the first and / or last symbols of a D2D subframe to 30kHz subcarrier spacing, such as SRS, so that the same symbol is repeatedly transmitted in the time domain, even though some symbols may not be used for tx / rx switching or AGC. You can recover it.
- 11 (b) shows that no D2D CI or D2D data is mapped to an RE having an odd number of first and last symbols.
- a / N or RI are mapped in the symbols around DMRS.
- This method is to obtain high channel estimation performance by placing information of high importance among D2D CI information around DMRS.
- the guard period is used for the first symbol or the last symbol of the D2D subframe, it is necessary to adjust the position of the symbol to which the D2D CI is mapped.
- the RI may be mapped to the first symbol in the case of the extended CP, when the D2D CI is mapped, the CI may be punctured, which may cause serious loss of data reception.
- FIG. 12 (a) and FIG. 12 (b) An operation of piggybacking HARQ-ACK and RI for a normal CP is illustrated in FIG. 12 (a) and FIG. 12 (b) for an extended CP.
- the RI cannot be mapped. This situation occurs characteristically in some D2D subframes and a solution is needed.
- D2D CI is mapped around the DMRS, first, some of the D2D CIs with high importance may be mapped around the DMRS. In this case, specific information is not mapped to other symbols according to importance, such as PUSCH piggyback. Instead, DMRS is mapped to 'frequency first' in order of a predetermined symbol order (in this case, virtual carrier indexes may be mapped from large order to small index. May be mapped from order) D2D CIs are filled sequentially. For example, D2D CIs such as MCS and ID (shortened by hashing) are filled in sequence around DMRS, and then filled in symbols in a predetermined order after going over one symbol.
- MCS and ID shortened by hashing
- the required number of symbols can be determined according to the overall bit size of the D2D CI mapped around the DMRS, and then the RE of the symbol can be punctured from 'frequency first' (largest virtual subcarrier index to larger index or smaller index). After puncturing (or rate matching in consideration of REs used in CI), the coded bits of the D2D CI are mapped to 'time first' in the corresponding region.
- the D2D CIs mapped around the DMRS are punctured as 'time first' according to the predetermined SC-FDM symbol according to the total bit size, and the coded bits of the D2D CI are mapped as 'time first' in the corresponding area. do.
- the order of symbols in which the D2D CI is filled may be 3—> 8-> 2 ⁇ > 9-> 4-> 6—> 1-> 10.
- the order of symbols filled with the D2D CI may be 2-> 6-> 1-> g> 3 ⁇ > 5-> 8.
- the first symbol and / or the last symbol are not used for D2D CI mapping. If the guard period is used only for the first symbol or only for the last symbol, no D2D CI is mapped to the symbol that contains the guard period.
- D2D CIs are sequentially filled from around the DMRS.
- a symbol may fill a D2D CI in preference to an outer symbol between two DMRSs around a DMRS. This is because better channel estimation performance can be obtained due to inter-DMRS channel interpolation between DMRSs.
- D2D CI class A information of high importance among D2D CIs
- D2D CI class B information of relatively low importance of D2D CI increase
- the D2D CI class A may include UE ID or MCS
- the D2D CI class B may include the number of APs or MIMO technique.
- the class according to the D2D CI may be predetermined.
- the D2D CI is not mapped to a symbol that is used or is likely to be used as a guard interval in a D2D subframe.
- [173J D2D CI may be mapped to a predetermined symbol position (Tables 4 and 5) according to importance, and a separate channel coding may be used for each importance. For example, high priority information may be mapped in preference to the heartfire around the DMRS using RM code or low code rate coding, and low priority symbols may be placed relatively relative (from DMRS) simply via repetitive code or simplex code. It may be mapped to a symbol of. Alternatively, the content of the D2D CI may be encoded in one channel coding (for example, convolutional code) regardless of importance and may be mapped to a control channel separate from RE or data by one of the above-mentioned methods. [174] Device Configuration According to an Embodiment of the Present Invention
- FIG. 13 is a diagram showing the configuration of a transmission point apparatus and a terminal apparatus according to an embodiment of the present invention. _
- the transmission point apparatus 10 includes a reception module 11, a transmission module 12, a processor 13, a memory 14, and a plurality of antennas 15. It may include.
- the plurality of antennas 15 means a transmission point apparatus that supports MIMO transmission and reception.
- the receiving modules 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 the downlink to the terminal.
- the processor 13 may control the operation of the overall 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 information received by the transmission point apparatus 10, information to be transmitted to the outside, and the memory 14 is processed.
- Information and the like may be stored for a predetermined time, and may be replaced with a component such as a buffer (not shown).
- the terminal device 20 includes a reception module 21, a transmission module 22, a processor 23, a memory 24, and a plurality of antennas 25. It may include.
- the plurality of antennas 25 mean 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 modules 22 may transmit various signals, data, and information on the uplink to the base station.
- the processor 23 may control the operation of the entire terminal device 20.
- the processor 23 of the terminal device 20 may process necessary items 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, and the memory 24 includes arithmetic processing information. It can be stored for a predetermined time, and can be replaced with a component such as a buffer (not shown).
- the description of the transmission point apparatus 10 may be equally applied to the relay apparatus as the downlink transmission entity or the uplink reception entity, and the description of the terminal device 20 will be described. The same can be applied to a relay apparatus as a downlink receiving entity or an uplink transmitting entity.
- embodiments of the present invention can be implemented through various means.
- embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof.
- the method according to the 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 PLDs (Programmable).
- 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 modules, procedures, or functions for performing 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.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1608061.6A GB2534786B (en) | 2013-10-28 | 2014-10-28 | Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system |
US15/033,049 US10075972B2 (en) | 2013-10-28 | 2014-10-28 | Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system |
JP2016527276A JP6404344B2 (ja) | 2013-10-28 | 2014-10-28 | 無線通信システムにおける装置対装置端末の信号送受信方法及び装置 |
KR1020167014256A KR102281343B1 (ko) | 2013-10-28 | 2014-10-28 | 무선 통신 시스템에서 장치 대 장치 단말의 신호 송수신 방법 및 장치 |
US16/109,250 US10645720B2 (en) | 2013-10-28 | 2018-08-22 | Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system |
Applications Claiming Priority (16)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361896652P | 2013-10-28 | 2013-10-28 | |
US61/896,652 | 2013-10-28 | ||
US201461952853P | 2014-03-13 | 2014-03-13 | |
US61/952,853 | 2014-03-13 | ||
US201461971519P | 2014-03-27 | 2014-03-27 | |
US61/971,519 | 2014-03-27 | ||
US201461977073P | 2014-04-08 | 2014-04-08 | |
US61/977,073 | 2014-04-08 | ||
US201461989505P | 2014-05-06 | 2014-05-06 | |
US61/989,505 | 2014-05-06 | ||
US201461990096P | 2014-05-07 | 2014-05-07 | |
US61/990,096 | 2014-05-07 | ||
US201461992212P | 2014-05-12 | 2014-05-12 | |
US61/992,212 | 2014-05-12 | ||
US201462001619P | 2014-05-21 | 2014-05-21 | |
US62/001,619 | 2014-05-21 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/033,049 A-371-Of-International US10075972B2 (en) | 2013-10-28 | 2014-10-28 | Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system |
US16/109,250 Continuation US10645720B2 (en) | 2013-10-28 | 2018-08-22 | Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015065014A1 true WO2015065014A1 (ko) | 2015-05-07 |
Family
ID=53004537
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2014/010191 WO2015065015A1 (ko) | 2013-10-28 | 2014-10-28 | 무선 통신 시스템에서 장치 대 장치 단말의 신호 송수신 방법 및 장치 |
PCT/KR2014/010190 WO2015065014A1 (ko) | 2013-10-28 | 2014-10-28 | 무선 통신 시스템에서 장치 대 장치 단말의 신호 송수신 방법 및 장치 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2014/010191 WO2015065015A1 (ko) | 2013-10-28 | 2014-10-28 | 무선 통신 시스템에서 장치 대 장치 단말의 신호 송수신 방법 및 장치 |
Country Status (5)
Country | Link |
---|---|
US (3) | US10075972B2 (ko) |
JP (1) | JP6404344B2 (ko) |
KR (1) | KR102281343B1 (ko) |
GB (1) | GB2534786B (ko) |
WO (2) | WO2015065015A1 (ko) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016209056A1 (ko) * | 2015-06-26 | 2016-12-29 | 엘지전자 주식회사 | 무선 통신 시스템에서 장치 대 장치 통신 단말의 신호 송수신 방법 및 장치 |
CN106304351A (zh) * | 2015-05-27 | 2017-01-04 | 中兴通讯股份有限公司 | 一种资源分配的方法和装置 |
WO2017014900A1 (en) * | 2015-07-21 | 2017-01-26 | Intel IP Corporation | Systems and methods for concurrent operation of devices over different network types |
WO2017034265A1 (ko) * | 2015-08-21 | 2017-03-02 | 엘지전자 주식회사 | 무선 통신 시스템에서 v2x 단말의 신호 송수신 방법 및 장치 |
JP2017508418A (ja) * | 2014-01-13 | 2017-03-23 | ▲華▼▲為▼終端有限公司Huawei Device Co., Ltd. | 参照信号送信方法及びユーザ機器 |
WO2017119740A1 (ko) * | 2016-01-05 | 2017-07-13 | 엘지전자 주식회사 | 무선 통신 시스템에서 단말의 제어정보 및 데이터 송신 방법 및 장치 |
CN107926005A (zh) * | 2015-08-13 | 2018-04-17 | 株式会社Ntt都科摩 | 用户装置及信号发送方法 |
JP2018067958A (ja) * | 2010-11-04 | 2018-04-26 | インターデイジタル パテント ホールディングス インコーポレイテッド | ピアトゥピア通信を確立するための方法および装置 |
CN108024338A (zh) * | 2016-11-03 | 2018-05-11 | 中兴通讯股份有限公司 | 子帧配置方法及装置 |
JP2019504579A (ja) * | 2016-02-05 | 2019-02-14 | 華為技術有限公司Huawei Technologies Co.,Ltd. | 制御シグナリング送信の方法及びデバイス |
JP2019531631A (ja) * | 2016-08-09 | 2019-10-31 | エルジー エレクトロニクス インコーポレイティド | 無線通信システムにおいて端末のd2dデータ伝送方法及び装置 |
JP2020058078A (ja) * | 2016-02-05 | 2020-04-09 | 華為技術有限公司Huawei Technologies Co.,Ltd. | 制御シグナリング送信の方法及びデバイス |
WO2021088029A1 (en) | 2019-11-08 | 2021-05-14 | Huawei Technologies Co., Ltd. | Group communication method and related products |
Families Citing this family (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015050402A1 (en) | 2013-10-03 | 2015-04-09 | Lg Electronics Inc. | Method and apparatus for transmitting device-to-device related information in wireless communication system |
US10075972B2 (en) | 2013-10-28 | 2018-09-11 | Lg Electronics Inc. | Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system |
US20150119056A1 (en) * | 2013-10-30 | 2015-04-30 | Electronics And Telecommunications Research Institute | Method of device-to-device communication and method of controlling device-to-device communication |
US20150117295A1 (en) * | 2013-10-30 | 2015-04-30 | Electronics And Telecommunications Research Institute | Method and apparatus for device-to-device communication |
GB2523328A (en) * | 2014-02-19 | 2015-08-26 | Nec Corp | Communication system |
US20150245334A1 (en) * | 2014-02-27 | 2015-08-27 | Innovative Sonic Corporation | Method and apparatus for device to device service in a wireless communication system |
US20150264588A1 (en) * | 2014-03-14 | 2015-09-17 | Samsung Electronics Co., Ltd. | Methods and apparatus for synchronization in device-to-device communication networks |
EP3122109A4 (en) * | 2014-03-20 | 2018-02-28 | Kyocera Corporation | Communication control method and user terminal |
US10652936B2 (en) * | 2014-03-21 | 2020-05-12 | Nokia Technologies Oy | Short identifiers for device-to-device (D2D) broadcast communications |
KR102250056B1 (ko) * | 2014-05-09 | 2021-05-10 | 주식회사 아이티엘 | D2d 통신을 위한 스케줄링 방법 및 그 장치 |
EP3627945B1 (en) | 2014-05-16 | 2021-02-17 | Sun Patent Trust | D2d communication method and d2d-enabled wireless device |
WO2016021929A1 (ko) * | 2014-08-05 | 2016-02-11 | 엘지전자(주) | 무선 통신 시스템에서 전송 전력 제어를 수행하기 위한 방법 및 이를 위한 장치 |
CN112135359A (zh) | 2014-08-06 | 2020-12-25 | 交互数字专利控股公司 | 用于确定设备到设备传输模式的方法和装置 |
US9894651B2 (en) * | 2014-08-08 | 2018-02-13 | Samsung Electronics Co., Ltd. | Methods and apparatus for resource allocation for D2D communications |
CN109195119B (zh) * | 2014-12-04 | 2022-03-08 | 财团法人工业技术研究院 | 资源选择方法及无线装置 |
US10516517B2 (en) * | 2015-01-29 | 2019-12-24 | Intel IP Corporation | System and methods for support of frequency hopping for UEs with reduced bandwidth support |
EP3297204B1 (en) * | 2015-05-08 | 2020-12-16 | LG Electronics Inc. | Method and device for transmitting and receiving discovery signal of device-to-device communication terminal in wireless communication system |
EP3306997B1 (en) * | 2015-07-27 | 2020-03-11 | Huawei Technologies Co., Ltd. | Data packet transmission method and device |
CN113891482A (zh) * | 2015-08-18 | 2022-01-04 | 北京三星通信技术研究有限公司 | 一种d2d通信中调度信息发送和接收的方法与设备 |
WO2017028300A1 (en) * | 2015-08-20 | 2017-02-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Optimization on ul resource allocation in prose relay |
CN113727310B (zh) * | 2015-09-14 | 2023-10-24 | Lg 电子株式会社 | 在无线通信***中从v2x终端收发消息的方法和装置 |
CN108029131B (zh) | 2015-09-17 | 2021-06-08 | Lg电子株式会社 | 无线通信***中由v2x终端发送和接收消息的方法和设备 |
JP6704616B2 (ja) * | 2015-09-18 | 2020-06-03 | 華為技術有限公司Huawei Technologies Co.,Ltd. | 制御情報伝送方法、送信端、および受信端 |
JP2019503104A (ja) | 2015-11-13 | 2019-01-31 | ソニー株式会社 | 方法、基地局、インフラストラクチャノード、及び通信端末 |
CN106303918B (zh) * | 2015-11-24 | 2020-06-02 | 北京智谷睿拓技术服务有限公司 | 设备间通信方法、设备间通信资源分配方法、及其装置 |
EP3425975B1 (en) * | 2016-03-30 | 2021-12-01 | Huawei Technologies Co., Ltd. | V2x communication method and device |
RU2698322C1 (ru) * | 2016-04-12 | 2019-08-26 | Телефонактиеболагет Лм Эрикссон (Пабл) | Способ и устройство для опорного сигнала и отображения для связи посредством прямого соединения |
CN107734674B (zh) * | 2016-08-11 | 2023-09-01 | 华为技术有限公司 | 数据传输的方法和*** |
CN108307535B (zh) | 2016-08-25 | 2021-05-07 | 北京三星通信技术研究有限公司 | 传输数据的方法及设备 |
KR102396046B1 (ko) | 2016-09-13 | 2022-05-10 | 엘지전자 주식회사 | 무선 통신 시스템에서 단말 간 직접 통신을 위한 전송 시간 구간 설정 방법 및 이를 위한 장치 |
WO2018053857A1 (zh) * | 2016-09-26 | 2018-03-29 | 华为技术有限公司 | 设备到设备的数据传输方法、装置及*** |
CN109997384B (zh) * | 2016-12-02 | 2022-05-10 | 诺基亚技术有限公司 | 用于第五代通信的接收方标识 |
CA3050335C (en) * | 2017-01-17 | 2021-08-10 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Signal transmission method and apparatus |
CN108631968B (zh) | 2017-03-20 | 2021-02-09 | 华为技术有限公司 | 一种数据反馈资源的确定方法及装置 |
CN108631912B (zh) * | 2017-03-23 | 2021-09-28 | 大唐移动通信设备有限公司 | 一种传输方法和装置 |
CN108632780B (zh) * | 2017-03-23 | 2019-09-17 | 电信科学技术研究院 | 一种数据传输方法及终端 |
EP3641435A4 (en) * | 2017-05-02 | 2021-02-17 | NTT DoCoMo, Inc. | BASE STATION DEVICE |
KR102417076B1 (ko) | 2017-07-13 | 2022-07-05 | 프라운호퍼-게젤샤프트 츄어 푀르더룽 데어 안게반텐 포르슝에.파우. | 피드백을 사용하는 통신을 위한 통신 디바이스, 시스템 및 방법 |
CN109714827B (zh) * | 2017-10-26 | 2023-09-01 | 华为技术有限公司 | 上行控制信息的传输方法和装置 |
US11290957B2 (en) * | 2017-11-17 | 2022-03-29 | Samsung Electronics Co., Ltd. | Sequence design of wake-up signals and resynchronization sequence |
BR112020016590A2 (pt) * | 2018-02-16 | 2020-12-15 | Ntt Docomo, Inc. | Terminal, método de radiocomunicação para um terminal e estação base |
US10505651B1 (en) * | 2018-08-03 | 2019-12-10 | Whelen Engineering Company, Inc. | Precision time synchronization over standardized networking protocols |
EP3628116B1 (en) * | 2018-08-03 | 2021-12-29 | Telefonaktiebolaget LM Ericsson (publ) | Methods, user equipment and base station for sidelink identification |
WO2020032837A1 (en) * | 2018-08-05 | 2020-02-13 | Telefonaktiebolaget Lm Ericsson (Publ) | Signaling of identity for radio access networks |
CN112514518B (zh) * | 2018-08-09 | 2024-04-26 | 株式会社Ntt都科摩 | 用户装置 |
US11457335B2 (en) | 2018-09-06 | 2022-09-27 | Qualcomm Incorporated | Link identity determination and signaling |
US11283566B2 (en) * | 2019-01-18 | 2022-03-22 | Huawei Technologies Co., Ltd. | Systems and methods for user equipment cooperation |
CN111435906B (zh) * | 2019-03-27 | 2021-11-19 | 维沃移动通信有限公司 | 一种参考值的确定方法及终端 |
KR20200114828A (ko) * | 2019-03-29 | 2020-10-07 | 삼성전자주식회사 | 무선 통신 시스템에서 사이드링크 피드백 채널의 신호 처리를 위한 방법 및 장치 |
CN112713962B (zh) * | 2019-03-29 | 2022-05-24 | 华为技术有限公司 | 通信方法及装置 |
US10707904B1 (en) * | 2019-05-02 | 2020-07-07 | SatixFy Isreal Ltd. | Methods and devices for operating in beam hopping configuration and under a range of signal to noise ratio conditions |
US11683793B2 (en) * | 2020-06-11 | 2023-06-20 | Qualcomm Incorporated | Sidelink power control using shared resources |
US11855927B2 (en) * | 2020-11-18 | 2023-12-26 | Electronics And Telecommunications Research Institute | Method and apparatus for scheduling in communication system supporting ultra-high frequency and ultra-wide band |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090011770A1 (en) * | 2007-07-05 | 2009-01-08 | Samsung Electronics Co. Ltd. | Apparatus and method for determining resources for peer to peer communication in communication system |
US20130150108A1 (en) * | 2011-12-09 | 2013-06-13 | Electronics And Telecommunications Research Institute | Device-to-device communication method based on cellular communication system |
US20130155962A1 (en) * | 2011-12-16 | 2013-06-20 | Renesas Mobile Corporation | Mechanism for Resource Allocation and Transmission of Control Information to Communication Device |
US20130258996A1 (en) * | 2012-03-28 | 2013-10-03 | Electronics And Telecommunications Research Institute | Method of allocating radio resources for device-to-device communication in cellular communication system |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007065272A1 (en) | 2005-12-08 | 2007-06-14 | Nortel Networks Limited | Resource assignment systems and methods |
JP4476968B2 (ja) * | 2006-06-19 | 2010-06-09 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信システムにおける基地局、ユーザ装置、送信方法及び受信方法 |
KR101534169B1 (ko) * | 2008-12-23 | 2015-07-07 | 삼성전자 주식회사 | 주파수 도약 모드로 동작 중인 무선 통신 시스템의 주파수 할당 방법 및 이를 위한 장치 |
US20110230219A1 (en) | 2010-03-16 | 2011-09-22 | Motorola, Inc. | Method and apparatus forinter-cell itnerference mitgation through enhanced preferred frequency reuse mechanisms |
US8548483B2 (en) | 2010-10-04 | 2013-10-01 | Nokia Corporation | Feedback mapping for D2D control signals |
US8995400B2 (en) | 2011-02-11 | 2015-03-31 | Qualcomm Incorporated | Method and apparatus for enabling channel and interference estimations in macro/RRH system |
EP3110221B1 (en) * | 2011-03-18 | 2018-05-09 | LG Electronics, Inc. | Method and device for communicating device-to-device |
CN104054282B (zh) * | 2012-01-18 | 2018-02-09 | Lg电子株式会社 | 装置对装置通信方法及其装置 |
US9185733B2 (en) * | 2012-01-25 | 2015-11-10 | Electronics And Telecommunications Research Institute | Method of device-to-device communication in wireless mobile communication system |
WO2013157865A1 (ko) * | 2012-04-18 | 2013-10-24 | 엘지전자 주식회사 | 무선 통신 시스템에서 단말 간 직접 통신을 위한 harq 수행 방법 및 이를 위한 장치 |
CN104350778A (zh) | 2012-05-31 | 2015-02-11 | 交互数字专利控股公司 | 设备到设备(d2d)链路自适应 |
US9154267B2 (en) * | 2012-07-02 | 2015-10-06 | Intel Corporation | Sounding reference signal (SRS) mechanism for intracell device-to-device (D2D) communication |
WO2014032222A1 (en) | 2012-08-27 | 2014-03-06 | Telefonaktiebolaget L M Ericsson (Publ) | Link adaptation for device-to-device communication |
US8923880B2 (en) * | 2012-09-28 | 2014-12-30 | Intel Corporation | Selective joinder of user equipment with wireless cell |
EP2914055B1 (en) * | 2012-10-29 | 2019-09-11 | Kyocera Corporation | Mobile communication system, user terminal, base station, processor, and communication control method |
US9173089B2 (en) | 2013-01-10 | 2015-10-27 | Samsung Electronics Co., Ltd. | Allocation of device id in device to device communications |
EP3709730A1 (en) * | 2013-01-16 | 2020-09-16 | Interdigital Patent Holdings, Inc. | Discovery signal generation and reception |
WO2014111154A1 (en) | 2013-01-18 | 2014-07-24 | Nokia Solutions And Networks Oy | Discovery in a communication system |
WO2014126255A1 (ja) | 2013-02-18 | 2014-08-21 | 京セラ株式会社 | 基地局及び通信制御方法 |
US10123344B2 (en) | 2013-03-06 | 2018-11-06 | Qualcomm Incorporated | Methods and apparatus for multi-subframe scheduling |
CN104113851B (zh) * | 2013-04-16 | 2019-04-16 | 中兴通讯股份有限公司 | 一种d2d发现方法及基站、用户设备 |
US9974066B2 (en) * | 2013-05-01 | 2018-05-15 | Samsung Electronics Co., Ltd. | Methods and apparatus for device-to-device communications system |
WO2014180519A1 (en) * | 2013-05-08 | 2014-11-13 | Telefonaktiebolaget L M Ericsson (Publ) | Improved selection of scheduling policy for network communications links and d2d communications links |
US9112685B2 (en) | 2013-05-10 | 2015-08-18 | Blackberry Limited | Mechanisms for direct inter-device signaling |
KR102058563B1 (ko) * | 2013-08-07 | 2019-12-24 | 인터디지탈 패튼 홀딩스, 인크 | 디바이스 대 디바이스 통신을 위한 분산형 스케줄링 |
US9563399B2 (en) | 2013-08-30 | 2017-02-07 | Cavium, Inc. | Generating a non-deterministic finite automata (NFA) graph for regular expression patterns with advanced features |
WO2015050402A1 (en) | 2013-10-03 | 2015-04-09 | Lg Electronics Inc. | Method and apparatus for transmitting device-to-device related information in wireless communication system |
US10075972B2 (en) * | 2013-10-28 | 2018-09-11 | Lg Electronics Inc. | Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system |
CN105874864B (zh) * | 2014-05-16 | 2019-11-12 | 松下电器(美国)知识产权公司 | 指示调度分派的方法和使用该方法的d2d使能的设备 |
CN112135359A (zh) * | 2014-08-06 | 2020-12-25 | 交互数字专利控股公司 | 用于确定设备到设备传输模式的方法和装置 |
KR101915417B1 (ko) * | 2014-08-07 | 2018-11-05 | 인텔 코포레이션 | 효과적인 디바이스간 통신을 위한 패킷 데이터 유닛의 시간 자원 패턴에 맵핑 |
KR20160018244A (ko) * | 2014-08-08 | 2016-02-17 | 주식회사 아이티엘 | D2d 통신을 위한 d2d 데이터 자원을 결정하는 방법 및 장치 |
-
2014
- 2014-10-28 US US15/033,049 patent/US10075972B2/en active Active
- 2014-10-28 GB GB1608061.6A patent/GB2534786B/en active Active
- 2014-10-28 WO PCT/KR2014/010191 patent/WO2015065015A1/ko active Application Filing
- 2014-10-28 WO PCT/KR2014/010190 patent/WO2015065014A1/ko active Application Filing
- 2014-10-28 KR KR1020167014256A patent/KR102281343B1/ko active IP Right Grant
- 2014-10-28 JP JP2016527276A patent/JP6404344B2/ja active Active
- 2014-10-28 US US15/033,043 patent/US10225855B2/en active Active
-
2018
- 2018-08-22 US US16/109,250 patent/US10645720B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090011770A1 (en) * | 2007-07-05 | 2009-01-08 | Samsung Electronics Co. Ltd. | Apparatus and method for determining resources for peer to peer communication in communication system |
US20130150108A1 (en) * | 2011-12-09 | 2013-06-13 | Electronics And Telecommunications Research Institute | Device-to-device communication method based on cellular communication system |
US20130155962A1 (en) * | 2011-12-16 | 2013-06-20 | Renesas Mobile Corporation | Mechanism for Resource Allocation and Transmission of Control Information to Communication Device |
US20130258996A1 (en) * | 2012-03-28 | 2013-10-03 | Electronics And Telecommunications Research Institute | Method of allocating radio resources for device-to-device communication in cellular communication system |
Non-Patent Citations (1)
Title |
---|
INTEL CORPORATION: "Discussion on Resource Allocation Methods for D2D Communication", R1-134139, 3GPP TSG RAN WG1 MEETING #74BIS, 28 September 2013 (2013-09-28), GUANGZHOU, CHINA * |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018067958A (ja) * | 2010-11-04 | 2018-04-26 | インターデイジタル パテント ホールディングス インコーポレイテッド | ピアトゥピア通信を確立するための方法および装置 |
US10715593B2 (en) | 2010-11-04 | 2020-07-14 | Interdigital Patent Holdings, Inc. | Method and apparatus for establishing peer-to-peer communication |
US10652063B2 (en) | 2014-01-13 | 2020-05-12 | Huawei Device Co., Ltd. | Reference signal transmission method and user equipment |
US11296915B2 (en) | 2014-01-13 | 2022-04-05 | Huawei Device Co., Ltd. | Reference signal transmission method and user equipment |
JP2017508418A (ja) * | 2014-01-13 | 2017-03-23 | ▲華▼▲為▼終端有限公司Huawei Device Co., Ltd. | 参照信号送信方法及びユーザ機器 |
CN106304351A (zh) * | 2015-05-27 | 2017-01-04 | 中兴通讯股份有限公司 | 一种资源分配的方法和装置 |
CN114401075A (zh) * | 2015-06-26 | 2022-04-26 | Lg 电子株式会社 | 无线通信***中收发设备对设备通信终端的信号的方法和装置 |
EP4030854A1 (en) * | 2015-06-26 | 2022-07-20 | LG Electronics Inc. | Method and apparatus for transceiving signal of device-to-device communication terminal in wireless communication system |
CN114401075B (zh) * | 2015-06-26 | 2024-05-07 | Lg电子株式会社 | 无线通信***中收发设备对设备通信终端的信号的方法和装置 |
CN107736074A (zh) * | 2015-06-26 | 2018-02-23 | Lg 电子株式会社 | 无线通信***中收发设备对设备通信终端的信号的方法和装置 |
CN107736074B (zh) * | 2015-06-26 | 2022-02-08 | Lg 电子株式会社 | 无线通信***中收发设备对设备通信终端的信号的方法和装置 |
US11115938B2 (en) | 2015-06-26 | 2021-09-07 | Lg Electronics Inc. | Method and apparatus for transceiving signal of device-to-device communication terminal in wireless communication system |
US11689337B2 (en) | 2015-06-26 | 2023-06-27 | Lg Electronics Inc. | Method and apparatus for transceiving signal of device-to-device communication terminal in wireless communication system |
WO2016209056A1 (ko) * | 2015-06-26 | 2016-12-29 | 엘지전자 주식회사 | 무선 통신 시스템에서 장치 대 장치 통신 단말의 신호 송수신 방법 및 장치 |
WO2017014900A1 (en) * | 2015-07-21 | 2017-01-26 | Intel IP Corporation | Systems and methods for concurrent operation of devices over different network types |
US10383138B2 (en) | 2015-07-21 | 2019-08-13 | Intel IP Corporation | Systems and methods for concurrent operation of devices over different network types |
CN107926005B (zh) * | 2015-08-13 | 2022-03-18 | 株式会社Ntt都科摩 | 用户装置及信号发送方法 |
CN107926005A (zh) * | 2015-08-13 | 2018-04-17 | 株式会社Ntt都科摩 | 用户装置及信号发送方法 |
US10433294B2 (en) | 2015-08-21 | 2019-10-01 | Lg Electronics Inc. | Method and device for transmitting/receiving signal of V2X terminal in wireless communication system |
US11277826B2 (en) | 2015-08-21 | 2022-03-15 | Lg Electronics Inc. | Method and device for transmitting/receiving signal of V2X terminal in wireless communication system |
WO2017034265A1 (ko) * | 2015-08-21 | 2017-03-02 | 엘지전자 주식회사 | 무선 통신 시스템에서 v2x 단말의 신호 송수신 방법 및 장치 |
WO2017119740A1 (ko) * | 2016-01-05 | 2017-07-13 | 엘지전자 주식회사 | 무선 통신 시스템에서 단말의 제어정보 및 데이터 송신 방법 및 장치 |
US10652909B2 (en) | 2016-01-05 | 2020-05-12 | Lg Electronics Inc. | Method and device for transmitting data and control information of terminal in wireless communication system |
EP3402276A4 (en) * | 2016-01-05 | 2019-07-03 | LG Electronics Inc. -1- | METHOD AND DEVICE FOR SENDING DATA AND CONTROL INFORMATION OF A TERMINAL IN A WIRELESS COMMUNICATION SYSTEM |
JP2019504579A (ja) * | 2016-02-05 | 2019-02-14 | 華為技術有限公司Huawei Technologies Co.,Ltd. | 制御シグナリング送信の方法及びデバイス |
JP2020058078A (ja) * | 2016-02-05 | 2020-04-09 | 華為技術有限公司Huawei Technologies Co.,Ltd. | 制御シグナリング送信の方法及びデバイス |
US11696325B2 (en) | 2016-02-05 | 2023-07-04 | Huawei Technologies Co., Ltd. | Control signaling transmission method and device |
JP2019531631A (ja) * | 2016-08-09 | 2019-10-31 | エルジー エレクトロニクス インコーポレイティド | 無線通信システムにおいて端末のd2dデータ伝送方法及び装置 |
US10945240B2 (en) | 2016-08-09 | 2021-03-09 | Lg Electronics Inc. | Method and apparatus for terminal to transmit D2D data in wireless communication system |
CN108024338A (zh) * | 2016-11-03 | 2018-05-11 | 中兴通讯股份有限公司 | 子帧配置方法及装置 |
EP4042728A4 (en) * | 2019-11-08 | 2022-10-26 | Huawei Technologies Co., Ltd. | GROUP COMMUNICATION PROCESS AND ASSOCIATED PRODUCTS |
WO2021088029A1 (en) | 2019-11-08 | 2021-05-14 | Huawei Technologies Co., Ltd. | Group communication method and related products |
Also Published As
Publication number | Publication date |
---|---|
JP2017501610A (ja) | 2017-01-12 |
US10645720B2 (en) | 2020-05-05 |
US20190007957A1 (en) | 2019-01-03 |
GB201608061D0 (en) | 2016-06-22 |
JP6404344B2 (ja) | 2018-10-10 |
US10075972B2 (en) | 2018-09-11 |
GB2534786A (en) | 2016-08-03 |
US10225855B2 (en) | 2019-03-05 |
US20160249355A1 (en) | 2016-08-25 |
KR102281343B1 (ko) | 2021-07-23 |
WO2015065015A1 (ko) | 2015-05-07 |
US20160286570A1 (en) | 2016-09-29 |
GB2534786B (en) | 2020-09-02 |
KR20160083023A (ko) | 2016-07-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10645720B2 (en) | Method and apparatus for transmitting and receiving signal for device-to-device terminal in wireless communication system | |
US10368352B2 (en) | Data transmission method and apparatus by device to device terminal in wireless communication system | |
EP3745625B1 (en) | Method for transmitting uplink signals in wireless communication system for supporting short transmission time interval, and device for supporting same | |
US10069601B2 (en) | Method and apparatus for data transmission of device-to-device user equipment in wireless communication system | |
KR101730656B1 (ko) | 무선 통신 시스템에서 경쟁 기반 상향링크 전송 수행 방법 및 장치 | |
WO2016108665A1 (ko) | 무선 통신 시스템에서 자원을 할당하기 위한 방법 및 이를 위한 장치 | |
WO2011093651A2 (ko) | 무선 통신 시스템에서 상향링크 제어 정보 전송 방법 및 장치 | |
KR102588473B1 (ko) | 상향링크 제어 채널의 자원을 동적으로 할당하는 장치 및 방법 | |
KR20160147730A (ko) | 무선 통신 시스템에서 장치 대 장치 단말의 데이터 전송 방법 및 장치 | |
WO2014182039A1 (ko) | 무선 통신 시스템에서 수신확인응답 전송 방법 및 장치 | |
US10342056B2 (en) | Method and device whereby device-to-device terminal transmits discovery signal in wireless communication system | |
Lei et al. | 4G LTE Fundamental Air Interface Design |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14857521 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016527276 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15033049 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 201608061 Country of ref document: GB Kind code of ref document: A Free format text: PCT FILING DATE = 20141028 |
|
ENP | Entry into the national phase |
Ref document number: 20167014256 Country of ref document: KR Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14857521 Country of ref document: EP Kind code of ref document: A1 |