# US 10,873,957 B2 · Method and apparatus for transmitting adaptive partial subframe in unlicensed frequency band, method and apparatus for identifying a frame structure, and method and apparatus for transmitting signal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,957 B2 - Document ID: US10873957B2 - Status: Granted - Kind: B2 - Application number: 16/401,491 - Filed: 2019-05-02 - Published: 2019-08-22 - Granted: 2020-12-22 - Earliest claimed: 2015-05-12 - Assignees: Electronics and Telecommunications Research Institute - Applicants: Electronics and Telecommunications Research Institute - Inventors: Chanho Yoon; Young Jo Ko; Seung-Kwon Baek; Eunkyung Kim - Web page: https://patentgrep.com/patent/US10873957B2 ## CPC - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 1/00: Arrangements for detecting or preventing errors in the information received {(correcting synchronisation H04L7/00)} - H04L 5/00: Arrangements affording multiple use of the transmission path - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence) - H04L 27/2613: {Structure of the reference signals} - H04W 28/26: Resource reservation - H04W 56/00: Synchronisation arrangements - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1215: {for collaboration of different radio technologies} - H04W 84/04: Large scale networks; Deep hierarchical networks - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract There is provided a method for transmitting, by a transmitter, a signal through an unlicensed band channel. The transmitter transmits an initial signal through the unlicensed band channel to preoccupy the unlicensed band channel when the unlicensed band channel is in an idle status. The transmitter includes a first partial subframe transmitted after the initial signal in a frame burst depending to transmission timing of the initial signal. Further, the transmitter transmits the frame burst through the unlicensed band channel. ## Claims ### Claim 1 A transmission method for a transmitter, the method comprising: performing channel sensing for occupying an unlicensed band; after the unlicensed band is determined to be idle as a result of the channel sensing, transmitting first configuration information through a control channel included in a first unit duration and transmitting data through a data channel included in the first unit duration; and transmitting second configuration information through another control channel included in a next unit duration following the first unit duration and transmitting data through another data channel included in the next unit duration following the first unit duration, wherein the first configuration information indicates a number of symbols occupied in the next unit duration following the first unit duration and the second configuration information indicates the number of symbols occupied in the next unit duration following the first unit duration. ### Claim 2 (depends on 1) The method of claim 1, wherein the first configuration information consists of 4 bits. ### Claim 3 (depends on 1) The method of claim 1, further comprising: transmitting a reservation signal for preventing other devices from occupying the unlicensed band when the unlicensed band is determined to be idle as a result of the channel sensing before the control channel and the data channel included in the first unit duration are transmitted. ### Claim 4 (depends on 3) The method of claim 3, wherein a time length of the reservation signal is 16 samples. ### Claim 5 A transmission method for a transmitter, the method comprising: performing channel sensing for occupying an unlicensed band; after the unlicensed band is determined to be idle as a result of the channel sensing, transmitting first configuration information through a control channel included in a first unit duration and transmitting data through a data channel included in the first unit duration; and transmitting second configuration information through another control channel included in a next unit duration following the first unit duration and transmitting data through another data channel included in the next unit duration following the first unit duration, wherein the first configuration information indicates a number of symbols occupied in the next unit duration following the first unit duration and the second configuration information indicates a number of symbols occupied in a unit duration which follows the next unit duration following the first unit duration. ### Claim 6 A reception method performed through an unlicensed band by a receiver, the method comprising: receiving a reference signal from a transmitter after the unlicensed band is determined to be idle; receiving first configuration information through a control channel included in a first unit duration and receiving data through a data channel included in the first unit duration; and receiving second configuration information through another control channel included in a next unit duration following the first unit duration and receiving data through another data channel included in the next unit duration following the first unit duration, wherein the first configuration information indicates a number of symbols occupied in a next unit duration following the first unit duration and the second configuration information indicates the number of symbols occupied in the next unit duration following the first unit duration. ### Claim 7 A reception method performed through an unlicensed band by a receiver, the method comprising: receiving a reference signal from a transmitter after the unlicensed band is determined to be idle; receiving first configuration information through a control channel included in a first unit duration and receiving data through a data channel included in the first unit duration; and receiving second configuration information through another control channel included in a next unit duration following the first unit duration and receiving data through another data channel included in the next unit duration following the first unit duration, wherein the first configuration information indicates a number of symbols occupied in the next unit duration following the first unit duration and the second configuration information indicates another number of symbols occupied in a unit duration which follows the next unit duration following the first unit duration. ### Claim 8 (depends on 7) The method of claim 7, wherein the first configuration information consists of 4 bits. ### Claim 9 (depends on 7) The method of claim 7, wherein the reference signal is received for preventing other devices from occupying the unlicensed band when the unlicensed band is determined to be idle before the control channel and the data channel included in the first unit duration are received from the transmitter. ### Claim 10 (depends on 9) The method of claim 9, wherein a time length of the reference signal is 16 samples.