WO2014098513A1 - 탐색 신호를 전송하는 방법 및 장치 - Google Patents
탐색 신호를 전송하는 방법 및 장치 Download PDFInfo
- Publication number
- WO2014098513A1 WO2014098513A1 PCT/KR2013/011925 KR2013011925W WO2014098513A1 WO 2014098513 A1 WO2014098513 A1 WO 2014098513A1 KR 2013011925 W KR2013011925 W KR 2013011925W WO 2014098513 A1 WO2014098513 A1 WO 2014098513A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sequence
- wireless device
- signal
- discovery
- generation information
- Prior art date
Links
Images
Classifications
-
- 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
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
Definitions
- the present invention relates to wireless communication, and more particularly, to a method and apparatus for transmitting a discovery signal in a wireless communication system.
- 3GPP LTE long term evolution
- UMTS Universal Mobile Telecommunications System
- 3GPP LTE uses orthogonal frequency division multiple access (OFDMA) in downlink and single carrier-frequency division multiple access (SC-FDMA) in uplink.
- OFDMA orthogonal frequency division multiple access
- SC-FDMA single carrier-frequency division multiple access
- MIMO multiple input multiple output
- LTE-A 3GPP LTE-Advanced
- D2D communication is a distributed communication technology in which adjacent wireless devices directly transmit traffic.
- wireless devices such as mobile phones find themselves physically adjacent to other wireless devices, establish communication sessions, and send traffic.
- D2D communication can solve the traffic overload problem by distributing traffic concentrated at the base station.
- D2D technologies such as Bluetooth and WiFi Direct support direct wireless node-to-node communication without the support of base stations.
- a search signal for searching for a device to participate in D2D communication and a synchronization signal for synchronizing between D2D devices are required.
- the present invention provides a method and apparatus for transmitting a discovery signal for searching for a device to participate in D2D communication.
- a method for transmitting discovery signals for device-to-device (D2D) communication in a wireless communication system is provided.
- the wireless device generates a random sequence based on a device ID
- the wireless device determines generation information based on the random sequence
- the wireless device generates a discovery sequence based on the generated information.
- the random sequence may include a bit sequence, and the generation information may be determined based on bits in the bit sequence.
- an apparatus for transmitting discovery signals for device-to-device (D2D) communication in a wireless communication system.
- the apparatus includes a radio frequency (RF) unit for transmitting and receiving a radio signal, and a processor connected to the RF unit, wherein the processor generates a random sequence based on a device identifier identifying the device. Determine generation information based on the random sequence, generate a discovery sequence based on the generation information, and instruct the RF unit to transmit the discovery sequence to another wireless device.
- RF radio frequency
- FIG 2 illustrates discovery signal generation according to an embodiment of the present invention.
- FIG 3 illustrates discovery signal generation according to another embodiment of the present invention.
- 5 shows another example of symbol level hopping.
- FIG. 6 illustrates an example in which a synchronization signal is transmitted together with a discovery signal.
- FIG. 7 illustrates a method for transmitting a discovery signal according to an embodiment of the present invention.
- FIG. 8 shows an example of transmission of a synchronization signal and a discovery signal.
- FIG. 9 is a block diagram illustrating a wireless device in which an embodiment of the present invention is implemented.
- the wireless device may be fixed or mobile and may be called other terms such as a user equipment (UE), a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), and the like.
- a base station generally refers to a fixed station for communicating with a wireless device, and may be referred to in other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), an access point, and the like.
- eNB evolved-NodeB
- BTS base transceiver system
- access point and the like.
- LTE includes LTE and / or LTE-A.
- a subframe is a resource allocation unit including a plurality of orthogonal frequency division multiplexing (OFDM) symbols.
- the data packet may be sent in one or more OFDM symbols in a subframe.
- the time taken for one subframe to be transmitted is called a transmission time interval (TTI).
- TTI transmission time interval
- the length of one subframe may be 1 ms.
- the subframe may include two slots. For example, if the subframe includes 14 OFDM symbols, each of the two slots may include 7 OFDM symbols.
- OFDM symbol is only for representing one symbol period in the time domain, since 3GPP LTE uses orthogonal frequency division multiple access (OFDMA) in downlink (DL), multiple access scheme or name There is no limit on.
- OFDM symbol may be called another name such as a single carrier-frequency division multiple access (SC-FDMA) symbol, a symbol period, and the like.
- SC-FDMA single carrier-frequency division multiple access
- the LTE system is not allowed for radio period direct communication, but is scheduled by the base station.
- D2D device-to-device
- the first wireless devices WD1 and 20 and the second wireless devices WD2 and 30 respectively establish a connection (eg, RRC (Radio Resource Control) connection) with the base station 10.
- a connection eg, RRC (Radio Resource Control) connection
- the first wireless device 20 and the second wireless device 30 are at a distance that can communicate with each other and perform peer discovery for identifying each other (S110).
- the first wireless device 20 and the second wireless device 30 may each transmit a discovery signal and / or a synchronization signal including their own identification information.
- the first wireless device 20 and the second wireless device 30 may periodically search for a search signal of a peer device or search the request of a base station.
- the first wireless device 20 exemplarily transmits data to the second wireless device 30.
- the first wireless device 20 transmits a schedule request for transmission to the second wireless device 30 to the base station 10 (S120).
- the scheduling request may include information regarding a channel state (eg, CQI, timing difference, etc.) between the first wireless device 20 and the second wireless device 30.
- the base station 10 sends a resource allocation to the first wireless device 20 (S130).
- the first wireless device 20 transmits a data packet to the second wireless device 30 based on the resource allocation (S140).
- an embodiment of the present invention may be applied to direct wireless period communication without involvement of a base station.
- the discovery signal is a signal used to find a peer device.
- a method of generating and transmitting a discovery signal will be described.
- FIG 2 illustrates discovery signal generation according to an embodiment of the present invention.
- the wireless device generates a random sequence through a random sequence generator based on a device identifier (device identifier).
- the random sequence is only an example and may be referred to as an initial sequence generated based on the device ID.
- the device ID may indicate an identifier of a wireless device transmitting the discovery signal or an identifier of a device group to which the wireless device belongs.
- the identifier of the wireless device may be represented by a medium access control (MAC) address of the device, a Cell-Radio Network Temporary Identifier (C-RNTI), a group ID, or the like.
- MAC medium access control
- C-RNTI Cell-Radio Network Temporary Identifier
- the device ID may be used as an initial value of the random sequence, used to mask a cyclic redundancy check (CRC) of the random sequence, or used to mask the random sequence.
- CRC cyclic redundancy check
- the random sequence may include a sequence for identifying the device ID.
- the random sequence may be defined as the following pseudo random seqeunce c (i).
- N is the length of the pseudo random number sequence c (i)
- K is a constant
- x 1 (i) is the first m-sequence
- x 2 (i) is the second m-sequence.
- 'mod' stands for modulo operation.
- the first m-sequence or the second m-sequence may be initialized based on the device ID.
- the generation information of the search sequence for the search signal is determined based on the generated random sequence.
- the search sequence is a sequence transmitted as a search signal.
- the generation information may be used for generation or transmission of the discovery sequence, and may include information detected by the receiver from the discovery sequence. For example, if the random sequence is a bit sequence of length 50, the first 20 bits may indicate the first field of the generation information, the next 15 bits may indicate the second field of the generation information, and the last 15 bits may indicate the third field of the generation information.
- the search sequence may be defined as a Zadoff-Chu sequence of length Ns as follows.
- the generation information may include at least one of cyclic shift (CS) information, root index information, sequence hopping information, and sequence mapping information for the search sequence.
- the CS information indicates the amount of CS to cyclically shift the base sequence.
- the root index information may indicate the root index of the Zadoff-Chu sequence.
- the generation information may include a basic sequence index and / or a CS index.
- the sequence hopping information may include information about which group of a plurality of sequence groups to use.
- the sequence mapping information may include information in which the discovery sequence is mapped to a physical resource source (eg, subcarrier and / or OFDM symbol).
- the sequence mapping information may include comb information indicating whether a search sequence is mapped to a subcarrier of an odd index or a subcarrier of an even index.
- the sequence mapping information may include information that a search sequence is mapped to a subcarrier corresponding to a multiple of B (B is an integer).
- the discovery signal may be defined in various sequences in addition to the Zadoff-Chu sequence.
- a sequence for an uplink reference signal shown in Section 5.5.1 of 3GPP TS 36.211 V10.4.0 (2011-12) may be used as a discovery sequence.
- the generated information may include at least any one of a scheduling request, a group indicator, a multi-hop indicator, an emergency indicator, an ignore / uninterest information, a priority information, a group join request, a group leave notification, and a group leave notification. It may include one.
- the search sequence may be generated based on the generation information.
- the discovery sequence is divided into one or more part sequences, and each part sequence is mapped to a physical resource and transmitted.
- the discovery signal may be transmitted according to a periodic or predetermined period pattern over one or more subframes.
- the discovery signal may be transmitted in some or all OFDM symbols of the subframe.
- the discovery signal may be transmitted in the first or last OFDM symbol of the subframe.
- the base station may inform the wireless device of the scheduling information in which the discovery signal is transmitted.
- the base station may inform the wireless device of the setting regarding the generation or transmission of the discovery signal.
- FIG 3 illustrates discovery signal generation according to another embodiment of the present invention.
- the random sequence is divided into a plurality of segment sequences, and corresponding generation information is determined from each segment sequence.
- the same generation information may be obtained from a plurality of segment sequences, or different generation information may be obtained.
- the length of the plurality of segment sequences may be the same or different.
- a plurality of search sequences are generated in accordance with each generation information.
- Each of the plurality of discovery sequences is mapped to a physical resource and transmitted.
- the peer device receiving the discovery signal may know the device ID of the wireless device transmitting the discovery signal in advance. Accordingly, the peer device generates a random sequence based on the device ID, and can detect the discovery signal because the peer device can know the generated information therefrom.
- blind decoding may be performed.
- the range of the device ID to perform blind decoding may be limited or the number of blind decoding may be limited.
- the search sequence may be defined by the CS of the base sequence.
- a search sequence may be generated by selecting one base sequence from a plurality of base sequences and cyclically shifting the selected base sequence. Let the index of the selected base sequence be Nbs and the CS index be Ncs. Nbs and / or Ncs may be performed symbol level hopping, slot level hopping and / or subframe level hopping.
- Symbol level hopping means that Nbs and / or Ncs are given according to the OFDM symbol index.
- Slot level hopping means that Nbs and / or Ncs are given according to the slot index.
- Subframe level hopping means that Nbs and / or Ncs are given according to the subframe index.
- S1 represents the first search sequence
- S2 represents the second search sequence.
- the subframe includes 14 OFDM symbols, and the OFDM symbols exemplify that 0 to 13 are indexed. Assume that the total number of CSs is 8 and the CS index is CS0 to CS7.
- S1 is applied with CS0 and S2 is applied with CS4.
- S1 applies CS1 and S2 applies CS5. That is, as the OFDM symbol index increases by 1, the CS index also increases by 1.
- 5 shows another example of symbol level hopping.
- the CS index increases by 1 as the OFDM symbol index increases by 1 for S1.
- the CS index increases by 2. This indicates that the hopping pattern may differ for each search sequence.
- the search sequence may be transmitted over one or more subframes. Alternatively, the search sequence may be transmitted in one or more OFDM symbols in the subframe. One search sequence may be transmitted over a plurality of OFDM symbols. Alternatively, one search sequence may be transmitted in one or more OFDM symbols, and a copy thereof may be repeatedly transmitted in another OFDM symbol in the same subframe.
- a search sequence based on different generation information may be transmitted for each symbol in one subframe.
- generation information may be obtained independently in each of the first slot and the second slot.
- information about the wireless device transmitting the discovery signal may be obtained, and in the second slot, information about the wireless device that will receive the discovery signal may be obtained.
- the random sequence may be generated based on the ID of the wireless device that will receive the discovery signal (received ID) in addition to the ID of the wireless device that transmits the discovery signal.
- a random sequence may be generated based on a specific ID representing a pair of a transmission ID and a reception ID.
- the random sequence may be generated based on the transmission ID (or the reception ID), and the generation information may include the reception ID (or the transmission ID).
- the first discovery signal based on the transmission ID and the second discovery signal based on the reception ID may be independently transmitted.
- the number of OFDM symbols for the first search signal and the number of OFDM symbols for the second search signal may be the same or different.
- the first discovery signal and the second discovery signal may be transmitted in one subframe.
- the first discovery signal may be transmitted in the first slot and the second discovery signal may be transmitted in the second slot.
- the discovery signal is a broadcast signal for which the receiving wireless device is not specified
- whether to broadcast the broadcast signal may be indicated by the discovery signal.
- the generation information may include an indicator indicating whether to broadcast.
- the receiving wireless device may additionally determine whether to detect / demodulate the signal after confirming that the corresponding discovery signal is broadcast.
- FIG. 6 illustrates an example in which a synchronization signal is transmitted together with a discovery signal.
- a synchronization signal is a signal for synchronizing radio periods and may be transmitted in one or more OFDM symbols.
- the synchronization signal is transmitted in the seventh OFDM symbol and the 14th OFDM symbol, but the position or number of OFDM symbols is only an example.
- Sequence generation for the synchronization signal may be set independently of sequence generation for the search signal.
- Peer discovery may be performed without recognizing a subframe boundary.
- one of the plurality of OFDM symbols in one slot may be a copy of the first OFDM symbol, thereby serving as a cyclic prefix (CP).
- CP cyclic prefix
- a wireless device transmits a discovery signal without using a signal for maintaining synchronization (eg, a random access preamble, etc.) when the wireless device loses synchronization or does not maintain synchronization in idle mode. Suggest a method.
- a signal for maintaining synchronization eg, a random access preamble, etc.
- FIG. 7 illustrates a method for transmitting a discovery signal according to an embodiment of the present invention.
- the WD1 20 and the WD3 40 are connected to the base station, are each kept in sync, and are known as wireless devices that know when to transmit a discovery signal.
- WD2 30 is an idle mode or a wireless device that is unable to maintain synchronization.
- a timing is estimated from signals (eg, a search signal) transmitted by the WD1 20 and the WD3 40.
- WD2 30 transmits a search signal based on the estimated timing.
- WD1 (20), WD2 (30) and WD3 (40) is said to perform D2D transmission and reception according to the DL (downlink) TX (transmit) subframe boundary of the base station.
- the discovery signal and / or the synchronization signal may be generated according to the embodiment of FIG. 2 or FIG. 3 described above.
- WD2 (30) is the first time point at which the discovery signal of WD1 (20) is detected.
- the transmission time 103 to which the discovery signal (and / or the synchronization signal) is transmitted may be determined based on the second time 102 where the discovery signal of the WD3 40 and the discovery signal are detected.
- the WD2 30 may determine the average of the first time point 101 and the second time point 102 as the transmission time point 103.
- the WD2 30 may determine one of the first time point 101 or the second time point 102 as the transmission time point 103.
- a special structure of signal may be designed. Assume that a discovery signal and a synchronization signal are transmitted in one subframe. A synchronization signal may be transmitted in the first OFDM symbol, and a discovery signal may be transmitted in the remaining OFDM symbols. 8 shows an example of transmission of a synchronization signal and a discovery signal.
- a synchronization signal may be transmitted in a specific OFDM symbol of every slot. If the OFDM symbol to which the synchronization signal is transmitted is defined in advance, the WD2 30 may search for the synchronization signals of the WD1 20 and the WD3 40 to predict each subframe boundary. Accordingly, the WD2 30 can grasp at what point the synchronization signal and the search signal of the WD1 20 and the WD3 40 start and to what extent. Based on the estimated timing, the WD2 30 may determine when to transmit its sync signal and search signal.
- the WD2 30 may transmit a synchronization signal and a discovery signal according to its DL subframe boundary. If all of the wireless devices participating in the D2D perform D2D transmission / reception according to the DL subframe boundary, the WD2 30 may also perform D2D transmission / reception according to the DL subframe boundary according to this rule. In addition, the WD2 30 may adjust the transmission timing from the DL subframe boundary in consideration of the estimated timing of another wireless device. If the WD2 30 does not know the DL subframe boundary, the transmission timing may be determined based on the detected timing.
- the WD2 30 may adjust the transmission timing according to the timing offset from the DL subframe boundary.
- the timing offset may be determined by the WD2 30 by itself or the base station may inform the WD2 30.
- the timing offset may be adjusted according to the received power intensity (or attenuation degree of the sync signal) of the sync signal received by the WD2 30. For example, when the received power of the received synchronization signal is large (or the degree of attenuation of the synchronization signal is small), it may be determined that the distance from the adjacent wireless device is small and the timing offset may be reduced.
- the transmission starts relatively early from the point of reception.
- the reception power when the reception power is small (or the degree of attenuation of the synchronization signal is large), it may be determined that the distance from the adjacent radio device is far and the timing offset may be increased. In order to compensate for propagation delay, the transmission starts relatively early from the reception point.
- the base station may inform the transmission power value of the synchronization signal through the system information, and allow the wireless device to determine the degree of attenuation.
- a wireless device even when a wireless device does not know its TA and synchronizes with a network, it detects a signal of a neighboring wireless device and based on this, its D2D signal (sync signal and / or discovery signal). Can be estimated.
- the wireless device may estimate the changed TA itself.
- the wireless device senses mobility, calculates in which direction and at what speed, and estimates the TA based on the mobility information.
- the receiver it is advantageous for the receiver that the plurality of synchronization signals received from the plurality of wireless devices be combined on the wireless channel so that it is as if one signal is received.
- it is required to be designed such that the distortion of the signal due to the sum of time delays is not affected by the detection of the synchronization signal. It is possible to repeatedly transmit a simple energy signal having a short period of time for a predetermined time, or use the Zadoff Chu sequence as a synchronization signal.
- Specific information may be included in the synchronization signal.
- a wireless device belonging to a specific D2D group may transmit a synchronization signal having group related information to distinguish it from other groups.
- Various methods may be applied to allow specific information to be transmitted through a synchronization signal.
- a sequence index may be allocated differently between groups.
- the synchronization signal may be generated based on the cell ID or may be generated based on the device group ID.
- a synchronization signal may be generated based on a unique ID for intercell D2D.
- the wireless device in the idle mode may not detect a synchronization signal from another wireless device.
- the wireless device may know the synchronization signal timing (eg, DL subframe boundary or TA) with the help of a base station.
- the D2D cluster may be established by the network.
- a wireless device that does not receive a synchronization signal transmitted by another wireless device may transmit the synchronization signal at the instruction of the base station.
- a wireless device that receives a synchronization signal transmitted by another wireless device may transmit the synchronization signal without the help of a base station.
- the wireless device transmitting the synchronization signal according to the instructions of the base station forms one D2D discovery cluster according to the instructions of the base station. Subsequently, wireless devices adjacent to the corresponding wireless device join the corresponding cluster without additional instructions and perform a role of expanding the cluster. That is, while the generation of the D2D discovery cluster is controlled by the base station, subsequent operations may reduce related signaling overhead by allowing the D2D devices to operate by themselves.
- FIG. 9 is a block diagram illustrating a wireless device in which an embodiment of the present invention is implemented.
- the wireless device 900 may include a processor 910, a memory 920, and a radio frequency (RF) unit 930.
- a processor 910 may include a processor 910, a memory 920, and a radio frequency (RF) unit 930.
- RF radio frequency
- the processor 910 implements the above-described operation of the wireless device.
- the processor 910 may generate a discovery signal and a synchronization signal for D2D communication and instruct the RF unit 930 to transmit the generated signal.
- the RF unit 930 transmits and receives a radio signal.
- the memory 920 stores instructions for the operation of the processor 910. The stored instructions may be executed by the processor 910 to implement the above-described operation of the wireless device.
- the processor may include application-specific integrated circuits (ASICs), other chipsets, logic circuits, and / or data processing devices.
- the memory may include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium and / or other storage device.
- the RF unit may include a baseband circuit for processing a radio signal.
- the above-described technique may be implemented as a module (process, function, etc.) for performing the above-described function.
- the module may be stored in memory and executed by a processor.
- the memory may be internal or external to the processor and may be coupled to the processor by various well known means.
Abstract
Description
Claims (12)
- 무선 통신 시스템에서 D2D(device-to-device) 통신을 위한 탐색 신호를 전송하는 방법에 있어서,무선기기가 기기 ID(identifier)를 기반으로 랜덤 시퀀스를 생성하고;상기 무선기기가 상기 랜덤 시퀀스를 기반으로 생성 정보를 결정하고;상기 무선기기가 상기 생성 정보를 기반으로 탐색 시퀀스를 생성하고; 및상기 무선기기가 다른 무선기기에게 상기 탐색 시퀀스를 전송하는 것을 포함하는 방법.
- 제1 항에 있어서,상기 랜덤 시퀀스는 비트 시퀀스를 포함하고, 상기 비트 시퀀스 내의 비트들을 기반으로 상기 생성 정보가 결정되는 것을 특징으로 하는 방법.
- 제1 항에 있어서,상기 생성 정보는 상기 탐색 시퀀스를 생성하는 데 사용되는 CS(cyclic shift)에 관한 정보를 포함하는 것을 특징으로 하는 방법.
- 제1 항에 있어서,상기 생성 정보는 상기 탐색 시퀀스가 맵핑되는 무선 자원을 가리키는 시퀀스 맵핑 정보를 포함하는 것을 특징으로 하는 방법.
- 제1 항에 있어서,상기 생성 정보는 복수의 기본 시퀀스 중 상기 탐색 시퀀스로 사용되는 기본 시퀀스를 가리키는 시퀀스 호핑 정보를 포함하는 것을 특징으로 하는 방법.
- 제1 항에 있어서,상기 생성 정보는 상기 다른 무선기기를 식별하는 데 사용되는 수신 ID에 관한 정보를 포함하는 것을 특징으로 하는 방법.
- 제1 항에 있어서,상기 탐색 시퀀스는 서브프레임 내 하나 또는 그 이상의 OFDM(orthogonal frequency division multiplexing) 심벌에서 전송되는 것을 특징으로 하는 방법.
- 제1 항에 있어서,상기 기기 ID는 상기 무선기기를 식별하는 데 사용되는 송신 ID를 포함하는 것을 특징으로 하는 방법.
- 제7 항에 있어서,상기 기기 ID는 상기 다른 무선기기를 식별하는 데 사용되는 수신 ID를 더 포함하는 것을 특징으로 하는 방법.
- 제1 항에 있어서,상기 기기 ID는 상기 무선기기가 속하는 기기 그룹을 식별하는 데 사용되는 그룹 ID를 포함하는 것을 특징으로 하는 방법.
- 무선 통신 시스템에서 D2D(device-to-device) 통신을 위한 탐색 신호를 전송하는 장치에 있어서,무선 신호를 송신 및 수신하는 RF(radio frequency)부; 및상기 RF부와 연결되는 프로세서를 포함하되, 상기 프로세서는,상기 장치를 식별하는 기기 ID(identifier)를 기반으로 랜덤 시퀀스를 생성하고;상기 랜덤 시퀀스를 기반으로 생성 정보를 결정하고;상기 생성 정보를 기반으로 탐색 시퀀스를 생성하고; 및다른 무선기기에게 상기 탐색 시퀀스를 전송하도록 상기 RF부에게 지시하는 것을 특징으로 하는 장치.
- 제11 항에 있어서,상기 랜덤 시퀀스는 비트 시퀀스를 포함하고, 상기 비트 시퀀스 내의 비트들을 기반으로 상기 생성 정보가 결정되는 것을 특징으로 하는 장치.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020157015870A KR101710289B1 (ko) | 2012-12-21 | 2013-12-20 | 탐색 신호를 전송하는 방법 및 장치 |
CN201380069221.8A CN104885379B (zh) | 2012-12-21 | 2013-12-20 | 用于发送发现信号的方法和装置 |
US14/652,377 US9713185B2 (en) | 2012-12-21 | 2013-12-20 | Method and device for transmitting discovery signal |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261740452P | 2012-12-21 | 2012-12-21 | |
US61/740,452 | 2012-12-21 | ||
US201361754949P | 2013-01-21 | 2013-01-21 | |
US61/754,949 | 2013-01-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014098513A1 true WO2014098513A1 (ko) | 2014-06-26 |
Family
ID=50978741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2013/011925 WO2014098513A1 (ko) | 2012-12-21 | 2013-12-20 | 탐색 신호를 전송하는 방법 및 장치 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9713185B2 (ko) |
KR (1) | KR101710289B1 (ko) |
CN (1) | CN104885379B (ko) |
WO (1) | WO2014098513A1 (ko) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9008203B2 (en) | 2013-03-13 | 2015-04-14 | Sony Corporation | Transmitters, receivers and methods of transmitting and receiving |
US9736874B2 (en) * | 2013-05-10 | 2017-08-15 | Futurewei Technologies, Inc. | System and methods for controlling out-of-network D2D communications |
KR102249900B1 (ko) | 2013-06-05 | 2021-05-07 | 소니 주식회사 | 페이로드 데이터 및 긴급 정보를 전송하기 위한 전송기 및 전송 방법 |
CN105359583A (zh) * | 2013-07-29 | 2016-02-24 | 富士通株式会社 | 信令配置方法、设备到设备发现的方法、装置和通信系统 |
CN105409318B (zh) * | 2013-08-04 | 2020-04-21 | Lg电子株式会社 | 在无线通信系统中开始设备对设备操作的方法和设备 |
EP3063999B1 (en) | 2013-10-30 | 2019-02-27 | Telefonaktiebolaget LM Ericsson (publ) | Methods and wireless devices for enabling synchronization in d2d communications |
US20150163008A1 (en) * | 2013-12-06 | 2015-06-11 | Electronics And Telecommunications Research Institute | Method and apparatus for cell discovery |
CN107592626A (zh) * | 2016-07-08 | 2018-01-16 | 中兴通讯股份有限公司 | 信道接入方法、装置及系统 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080092941A (ko) * | 2006-01-11 | 2008-10-16 | 퀄컴 인코포레이티드 | 무선 피어-투-피어 네트워크에 있어서의 무선 디바이스 발견 |
KR20110087323A (ko) * | 2007-05-10 | 2011-08-02 | 캐논 가부시끼가이샤 | 애드혹 네트워크에 있어서의 wi-fi 프로텍티드 셋업을 위한 통신 장치 및 방법 |
WO2012128505A2 (ko) * | 2011-03-18 | 2012-09-27 | 엘지전자 주식회사 | 장치-대-장치 통신 방법 및 장치 |
KR20120112637A (ko) * | 2009-12-23 | 2012-10-11 | 콸콤 인코포레이티드 | 피어-투-피어 무선 네트워크들에서의 멀티-홉 피어 발견을 지원하기 위한 방법들 및 장치 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8134931B2 (en) * | 2007-07-10 | 2012-03-13 | Qualcomm Incorporated | Apparatus and method of generating and maintaining orthogonal connection identifications (CIDs) for wireless networks |
US8493887B2 (en) * | 2008-12-30 | 2013-07-23 | Qualcomm Incorporated | Centralized control of peer discovery pilot transmission |
US8812657B2 (en) * | 2010-04-15 | 2014-08-19 | Qualcomm Incorporated | Network-assisted peer discovery |
US9485069B2 (en) | 2010-04-15 | 2016-11-01 | Qualcomm Incorporated | Transmission and reception of proximity detection signal for peer discovery |
US8923516B2 (en) * | 2012-08-29 | 2014-12-30 | Qualcomm Incorporated | Systems and methods for securely transmitting and receiving discovery and paging messages |
-
2013
- 2013-12-20 KR KR1020157015870A patent/KR101710289B1/ko active IP Right Grant
- 2013-12-20 US US14/652,377 patent/US9713185B2/en active Active
- 2013-12-20 WO PCT/KR2013/011925 patent/WO2014098513A1/ko active Application Filing
- 2013-12-20 CN CN201380069221.8A patent/CN104885379B/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080092941A (ko) * | 2006-01-11 | 2008-10-16 | 퀄컴 인코포레이티드 | 무선 피어-투-피어 네트워크에 있어서의 무선 디바이스 발견 |
KR20090004856A (ko) * | 2006-01-11 | 2009-01-12 | 퀄컴 인코포레이티드 | 피어-투-피어 통신에서 식별을 제공하는 비컨 신호들의 인코딩 |
KR20110087323A (ko) * | 2007-05-10 | 2011-08-02 | 캐논 가부시끼가이샤 | 애드혹 네트워크에 있어서의 wi-fi 프로텍티드 셋업을 위한 통신 장치 및 방법 |
KR20120112637A (ko) * | 2009-12-23 | 2012-10-11 | 콸콤 인코포레이티드 | 피어-투-피어 무선 네트워크들에서의 멀티-홉 피어 발견을 지원하기 위한 방법들 및 장치 |
WO2012128505A2 (ko) * | 2011-03-18 | 2012-09-27 | 엘지전자 주식회사 | 장치-대-장치 통신 방법 및 장치 |
Also Published As
Publication number | Publication date |
---|---|
US9713185B2 (en) | 2017-07-18 |
CN104885379B (zh) | 2018-03-27 |
KR20150099524A (ko) | 2015-08-31 |
US20150334758A1 (en) | 2015-11-19 |
KR101710289B1 (ko) | 2017-02-24 |
CN104885379A (zh) | 2015-09-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014098513A1 (ko) | 탐색 신호를 전송하는 방법 및 장치 | |
WO2013125887A1 (ko) | 전송 방법 및 전송 장치 | |
WO2018199652A1 (ko) | 무선 통신 시스템에서 wake up 신호를 수신하는 방법 및 장치 | |
WO2013125925A1 (ko) | 동기를 트랙킹하는 방법 및 장치 | |
WO2018062898A1 (ko) | 무선 통신 시스템에서 자원을 선택하고 pssch를 전송하는 방법 및 장치 | |
WO2016028001A1 (ko) | 무선 통신 시스템에서 신호 전송 방법 및 장치 | |
WO2016171495A1 (ko) | 무선 통신 시스템에서 장치 대 장치 통신 단말의 릴레이 선택 및 신호 송수신 방법 및 장치 | |
WO2017007184A1 (ko) | 단말 간 신호를 전송하는 방법 및 이를 위한 장치 | |
WO2016159716A1 (ko) | 무선 통신 시스템에서 레인징 관련 동작 수행 방법 | |
WO2017196129A1 (ko) | 무선 통신 시스템에서 ue의 사이드링크 신호 송수신 방법 | |
WO2018062846A1 (ko) | 무선 통신 시스템에서 자원을 선택하고 pssch를 전송하는 방법 및 장치 | |
WO2016018034A1 (ko) | 무선 통신 시스템에서 신호 전송 방법 및 장치 | |
WO2015199494A1 (ko) | 비면허 대역에서의 데이터 전송 방법 및 장치 | |
WO2017171447A2 (ko) | 무선 통신 시스템에서 gnss 타이밍을 사용하는 ue의 사이드링크 신호 송수신 방법 | |
WO2016117982A2 (ko) | 무선 통신 시스템에서 장치 대 장치 통신 단말의 신호 생성 방법 및 장치 | |
WO2018143725A1 (ko) | 무선 통신 시스템에서 단말이 cr을 측정하고 전송을 수행하는 방법 및 장치 | |
WO2017034265A1 (ko) | 무선 통신 시스템에서 v2x 단말의 신호 송수신 방법 및 장치 | |
WO2017111466A1 (ko) | 무선 통신 시스템에서 참조신호와 데이터를 생성하고 전송하는 방법 및 장치 | |
WO2016072705A1 (ko) | 무선 통신 시스템에서 장치 대 장치 단말의 신호 전송 방법 및 장치 | |
WO2018030788A1 (ko) | 무선 통신 시스템에서 단말의 사이드링크 신호 송수신 방법 | |
WO2018021784A1 (ko) | 무선 통신 시스템에서 플래툰 통신에 관련된 신호 송수신 방법 | |
WO2018038496A1 (ko) | 무선 통신 시스템에서 단말의 측정을 통한 자원 선택 및 데이터 전송 방법 및 장치 | |
WO2018160036A1 (ko) | 무선 통신 시스템에서 사이드링크 신호를 전송하는 방법 및 장치 | |
WO2018212526A1 (ko) | 무선 통신 시스템에서 사이드링크 신호를 송신하는 방법 및 장치 | |
WO2015130067A1 (ko) | 무선 통신 시스템에서 장치 대 장치 단말 신호 생성 방법 및 장치 |
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: 13864153 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20157015870 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14652377 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13864153 Country of ref document: EP Kind code of ref document: A1 |