摘要:
The present invention relates to a method for performing device-to-device (D2D) communication in a wireless communication system. Particularly, the method comprises the step of discovering, by a first device performing channel hopping and D2D communication, a second device for which a new D2D communication is to be performed, wherein: the first device discovers the second device on the basis of a first channel hopping sequence in a first time interval within a total discovery period which is a channel hopping period, and is configured to perform channel hopping on the basis of a second channel hopping sequence in a second time interval within the total discovery period; and the total discovery period of the first device is determined on the basis of the second channel hopping sequence in the second time interval and the number of repetitions of the second channel hopping sequence.
摘要:
The present invention relates to a method for device-to-device communication (D2D) in a wireless communication system. Particularly, the method is characterized in that when a device, which has been conducting device-to-device communication, additionally conducts device-to-device communication with a new device, a channel sequence of the device conducting the communication is determined, one of two devices conducting the device-to-device communication is determined as a reference device for channel synchronization and channel synchronization is thereby performed.
摘要:
The present invention relates to a method for making device to device (D2D) communication. More specifically, the step of enabling a first device communicating with another device through channel hopping to find a second device for communication further includes the steps of: finding the second device based on a first channel hopping sequence in a first time interval within the entire find cycle during which the first device performs the channel hopping; and setting the first device so as to perform the channel hopping based on a second channel hopping sequence in a second time interval within the entire find cycle, wherein the entire find cycle of the first device is determined based on the second channel hopping sequence in the second time interval and the number of repeated second channel hopping sequences.
摘要:
A method and apparatus of sleep mode operation in a multi-carrier system are discussed. The method of establishing a sleep mode operation through active primary and secondary carriers according to an embodiment of the present invention may include transmitting a sleep cycle ID, a listening window, and traffic indication inactive information indicating that an indication as to whether traffic is generated is not transferred to a terminal through the primary carrier, sending downlink data to the terminal through the active primary or secondary carrier during the listening window, and sending a listening window early termination indication indicating to early terminate the listening window of the primary or secondary carrier that has received the downlink data through the primary carrier to the terminal if the data sending is completed.
摘要:
The present invention relates to a method for receiving a downlink control channel by means of a terminal in a wireless channel system and an apparatus for same. In particular, the method for receiving a downlink control channel by means of a terminal in a wireless channel system includes the steps of: dividing at least one resource block allocated to the terminal into the preset number of subsets; selecting one or more subsets for the terminal from the at least one resource block; setting the selected subset set as a search space for the terminal; and performing blind decoding for the search space to detect the downlink control channel, wherein the preset number of subsets are respectively demodulated by demodulation reference signals (DM-RS) defined with different antenna ports in each of the resource blocks.
摘要:
A wireless communication system is disclosed. Specifically, a channelization method in a whitespace band and an apparatus for the same are disclosed. A method for providing whitespace operation information includes transmitting, by a first station (STA) to a second STA, a frame including a TV whitespace high throughput (TVHT) operation information field. The TVHT operation information field includes primary channel number, channel width, channel center frequency segment 0 and channel center frequency segment 1 subfields. A channel center frequency of frequency segment 0 or frequency segment 1 is determined based on a channel start frequency. The channel start frequency is determined as a function of a TV channel index corresponding to the frequency segment 0 or a TV channel index corresponding to the frequency segment 1.
摘要:
Proposed are a method and device for receiving a PPDU in a wireless LAN system. Specifically, a reception STA receives the PPDU from a transmission STA through a wideband and decodes the PPDU. The PPDU includes an STF signal. The STF signal is generated on the basis of a first STF sequence for the wideband. When the wideband is a 320 MHz band, the first STF sequence is a sequence including a M sequence and is defined as {M −1 M −1 −M −1 M 0 −M 1 M 1 −M 1 −M 0 M −1 M −1 −M −1 M 0 −M 1 M 1 −M 1 −M 0 −M 1 −M 1 M 1 −M 0 M −1 −M −1 M −1 M 0 −M 1 −M 1 −M 1 M 1 −M 0 M −1 −M −1 M −1 M}*(1+j)/sqrt(2).
摘要:
Proposed herein is a method and device for setting limited RUs and MRUs in a WLAN system. More specifically, a receiving STA receives a PPDU from a transmitting STA through a preset frequency band, and decodes the PPDU. The receiving STA is an STA operating only in a 20 MHz band. The PPDU includes a preamble and a data field. The data field is received through resources other than the first RU and the first MRU among the preset frequency band.
摘要:
A method and apparatus for receiving a PPDU in a wireless LAN system are proposed. Specifically, a receiving STA receives a PPDU from a transmitting STA through a first band, and decodes the PPDU. The PPDU comprises first to third fields. The first field comprises information on the bandwidth of the first band. The second field comprises information on whether preamble puncturing is performed in the first band. The third field comprises information about a pattern of preamble puncturing.
摘要:
Proposed are a method and apparatus for receiving a PPDU in a wireless LAN system. In detail, a reception STA receives a PPDU from a transmission STA through a first band and decodes the PPDU. The PPDU includes a preamble and a data field. The first band includes first and second subblocks. The data field includes first data for the first subblock and second data for the second subblock. The first data is generated on the basis of data in which constellation mapping is performed on encoded data bits. The second data is generated on the basis of data obtaining by duplicating the first data and applying phase rotation thereto.