# US 12,003,448 B2 · Method and device for wireless communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,448 B2 - Document ID: US12003448B2 - Status: Granted - Kind: B2 - Application number: 17/749,169 - Filed: 2022-05-20 - Published: 2022-09-01 - Granted: 2024-06-04 - Earliest claimed: 2016-06-06 - Assignees: Shanghai Langbo Communication Technology Company Limited - Applicants: Xiaobo Zhang - Inventors: Xiaobo Zhang - Web page: https://patentgrep.com/patent/US12003448B2 ## CPC - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - 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 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/30: Resource management for broadcast services - 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 Disclosed are a method and device in wireless communication. As one embodiment, a UE receives a first signalling, and subsequently receives a first wireless signal on a target time-frequency resource, wherein the first signalling is used for determining at least the former of (a sub-carrier interval corresponding to the first wireless signal, and the target time-frequency resource), and the first signalling is a physical layer signalling. The present invention can dynamically configure a plurality of sub-carrier intervals on the same frequency band, thereby ensuring that different bandwidth requirements corresponding to different applications are satisfied on the same bandwidth. In addition, the present invention prevents a UE from determining a sub-carrier interval by blind detection, thereby reducing the complexity of the UE. ## Claims ### Claim 1 A method in a User Equipment (UE) that supports configurable subcarrier spacings, comprising: receiving a third signaling, the third signaling being used for determining a first time-frequency resource pool; receiving a first signaling, wherein the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal, or, the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal and a target time-frequency resource; and receiving the first radio signal on the target time-frequency resource, or transmitting the first radio signal on the target time-frequency resource; wherein the target time-frequency resource belongs to a first frequency band in frequency domain; the first signaling is specific to the UE; the first time-frequency resource pool belongs to the first frequency band in frequency domain; the UE assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing; the third signaling is a broadcast signaling; the unified subcarrier spacing is configurable, the third signaling is used for determining the unified subcarrier spacing; wherein the third signaling is composed of information bits of a MIB, the subcarrier spacing corresponding to the first radio signal is a positive integral multiple of 15 kHz. ### Claim 2 (depends on 1) The method according to claim 1, comprising: receiving a fourth signaling, the fourth signaling being used for determining a second time-frequency resource pool; wherein the first signaling indicates the target time-frequency resource out of the second time-frequency resource pool; the first time-frequency resource pool and the second time-frequency resource pool are orthogonal in frequency domain. ### Claim 3 (depends on 1) The method according to claim 1, wherein the first time-frequency resource pool is discrete in time domain; or, the phrase that “the UE assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing” refers to: the UE receives a second radio signal in the first time-frequency resource pool and the second radio signal corresponds to a same subcarrier spacing; the second radio signal comprises SIB or a downlink physical layer signaling. ### Claim 4 (depends on 1) The method according to claim 1, wherein the first signaling is Downlink Control Information (DCI) with DL grant and the first radio signal is received by the UE on the target time-frequency resource, or, the first signaling is DCI with UL grant and the first radio signal is transmitted by the UE on the target time-frequency resource, or, the first signaling is a UE-specific Radio Resource Control (RRC) signaling. ### Claim 5 (depends on 1) The method according to claim 1, comprising: receiving a second signaling, the second signaling being used for determining a first frequency band; wherein the second signaling is a broadcast signaling; the second signaling is transmitted in the first time-frequency resource pool, or, the second signaling comprises System Information Block. ### Claim 6 A method in a base station that supports configurable subcarrier spacings, comprising: transmitting a third signaling, the third signaling being used for determining a first time-frequency resource pool; transmitting a first signaling, wherein the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal, or, the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal and a target time-frequency resource; and transmitting the first radio signal on the target time-frequency resource, or receiving the first radio signal on the target time-frequency resource; wherein the target time-frequency resource belongs to a first frequency band in frequency domain; the first signaling is specific to a receiver of the first signaling; the first time-frequency resource pool belongs to the first frequency band in frequency domain; the receiver of the first signaling assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing; the third signaling is a broadcast signaling; the unified subcarrier spacing is configurable, the third signaling is used for determining the unified subcarrier spacing; wherein the third signaling is composed of information bits of a MIB, the subcarrier spacing corresponding to the first radio signal is a positive integral multiple of 15 kHz. ### Claim 7 (depends on 6) The method according to claim 6, comprising: transmitting a fourth signaling, the fourth signaling being used for determining a second time-frequency resource pool; wherein the first signaling indicates the target time-frequency resource out of the second time-frequency resource pool; the first time-frequency resource pool and the second time-frequency resource pool are orthogonal in frequency domain. ### Claim 8 (depends on 6) The method according to claim 6, wherein the first time-frequency resource pool is discrete in time domain; or, the phrase that “the receiver of the first signaling assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing” refers to: the receiver of the first signaling receives a second radio signal in the first time-frequency resource pool and the second radio signal corresponds to a same subcarrier spacing; the second radio signal comprises SIB or a downlink physical layer signaling. ### Claim 9 (depends on 6) The method according to claim 6, wherein the first signaling is Downlink Control Information (DCI) with DL grant and the first radio signal is transmitted by the base station on the target time-frequency resource, or, the first signaling is DCI with UL grant and the first radio signal is received by the base station on the target time-frequency resource, or, the first signaling is a UE-specific Radio Resource Control (RRC) signaling. ### Claim 10 (depends on 6) The method according to claim 6, comprising: transmitting a second signaling, the second signaling being used for determining a first frequency band; wherein the second signaling is a broadcast signaling; the second signaling is transmitted in the first time-frequency resource pool, or, the second signaling comprises System Information Block. ### Claim 11 A UE that supports configurable subcarrier spacings, comprising: a first receiver: used for receiving a third signaling and a first signaling, the third signaling being used for determining a first time-frequency resource pool, wherein the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal, or, the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal and a target time-frequency resource; and a first processer: used for receiving the first radio signal on the target time-frequency resource, or transmitting the first radio signal on the target time-frequency resource; wherein the target time-frequency resource belongs to a first frequency band in frequency domain; the first signaling is specific to the UE; the first time-frequency resource pool belongs to the first frequency band in frequency domain; the UE assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing; the third signaling is a broadcast signaling; the unified subcarrier spacing is configurable, the third signaling is used for determining the unified subcarrier spacing; wherein the third signaling is composed of information bits of a MIB, the subcarrier spacing corresponding to the first radio signal is a positive integral multiple of 15 kHz. ### Claim 12 (depends on 11) The UE according to claim 11, wherein the first receiver is used for receiving a fourth signaling, the fourth signaling being used for determining a second time-frequency resource pool; wherein the first signaling indicates the target time-frequency resource out of the second time-frequency resource pool; the first time-frequency resource pool and the second time-frequency resource pool are orthogonal in frequency domain. ### Claim 13 (depends on 11) The UE according to claim 11, wherein the first time-frequency resource pool is discrete in time domain; or, the phrase that “the UE assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing” refers to: the UE receives a second radio signal in the first time-frequency resource pool and the second radio signal corresponds to a same subcarrier spacing; the second radio signal comprises SIB or a downlink physical layer signaling. ### Claim 14 (depends on 11) The UE according to claim 11, wherein the first signaling is Downlink Control Information (DCI) with DL grant and the first radio signal is received by the UE on the target time-frequency resource, or, the first signaling is DCI with UL grant and the first radio signal is transmitted by the UE on the target time-frequency resource, or, the first signaling is a UE-specific Radio Resource Control (RRC) signaling. ### Claim 15 (depends on 11) The UE according to claim 11, the first receiver is used for receiving a second signaling, the second signaling being used for determining a first frequency band; wherein the second signaling is a broadcast signaling; the second signaling is transmitted in the first time-frequency resource pool, or, the second signaling comprises System Information Block. ### Claim 16 A base station that supports configurable subcarrier spacings, comprising: a first transmitter: used for transmitting a third signaling and a first signaling, the third signaling being used for determining a first time-frequency resource pool, wherein the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal, or, the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal and a target time-frequency resource; and a second processor: used for transmitting the first radio signal on the target time-frequency resource, or receiving the first radio signal on the target time-frequency resource; wherein the target time-frequency resource belongs to a first frequency band in frequency domain; the first signaling is specific to a receiver of the first signaling; the first time-frequency resource pool belongs to the first frequency band in frequency domain; the receiver of the first signaling assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing; the third signaling is a broadcast signaling; the unified subcarrier spacing is configurable, the third signaling is used for determining the unified subcarrier spacing; wherein the third signaling is composed of information bits of a MIB, the subcarrier spacing corresponding to the first radio signal is a positive integral multiple of 15 kHz. ### Claim 17 (depends on 16) The base station according to claim 16, wherein the second transmitter is used for transmitting a fourth signaling, the fourth signaling being used for determining a second time-frequency resource pool; wherein the first signaling indicates the target time-frequency resource out of the second time-frequency resource pool; the first time-frequency resource pool and the second time-frequency resource pool are orthogonal in frequency domain. ### Claim 18 (depends on 16) The base station according to claim 16, wherein the first time-frequency resource pool is discrete in time domain; or, the phrase that “the receiver of the first signaling assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing” refers to: the receiver of the first signaling receives a second radio signal in the first time-frequency resource pool and the second radio signal corresponds to a same subcarrier spacing; the second radio signal comprises SIB or a downlink physical layer signaling. ### Claim 19 (depends on 16) The base station according to claim 16, wherein the first signaling is Downlink Control Information (DCI) with DL grant and the first radio signal is transmitted by the base station on the target time-frequency resource, or, the first signaling is DCI with UL grant and the first radio signal is received by the base station on the target time-frequency resource, or, the first signaling is a UE-specific Radio Resource Control (RRC) signaling. ### Claim 20 (depends on 16) The base station according to claim 16, the second transmitter is used for transmitting a second signaling, the second signaling being used for determining a first frequency band; wherein the second signaling is a broadcast signaling; the second signaling is transmitted in the first time-frequency resource pool, or, the second signaling comprises System Information Block.