# US 12,004,099 B2 · Data transmission method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,099 B2 - Document ID: US12004099B2 - Status: Granted - Kind: B2 - Application number: 17/365,168 - Filed: 2021-07-01 - Published: 2021-10-21 - Granted: 2024-06-04 - Earliest claimed: 2019-01-11 - Assignees: Fujitsu Limited - Applicants: Fujitsu Limited - Inventors: Qinyan Jiang; Meiyi Jia; Xin Wang; Guoyu Zhang; Lei Zhang - Web page: https://patentgrep.com/patent/US12004099B2 ## CPC - 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)} - H04W 56/001: {Synchronization between nodes} - H04J 11/0069: {Cell search, i.e. determining cell identity [cell-ID] (design of multiplexing codes H04J13/00; processing access restriction or access information H04W48/16; discovery of network devices for network data management H04W8/005; sounding signals for channel estimation H04L25/0226; structure of reference signals in multicarrier modulation systems H04L27/2613; frame, time or carrier synchronisation in multicarrier modulation systems H04L27/2655)} - H04J 11/0073: {Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group} - H04J 11/0076: {Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group} - H04L 5/006: {Quality of the received signal, e.g. BER, SNR, water filling} - H04L 5/0085: {when channel conditions change} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 27/2613: {Structure of the reference signals} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0023: {Time-frequency-space} - 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) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract A data transmission method and apparatus, wherein a first SSB set corresponding to a transmission window and a second SSB set taken as a subset of the first SSB set are provided, and at least one SSB in the second SSB set is transmitted in the transmission window, which may be adapted to cell coverage of different situations, and improve flexibility of resource scheduling. ## Claims ### Claim 1 A data transmission apparatus, configured at a network equipment side, the apparatus comprising: a transmitter configured to, in a first transmission window, transmit at least one synchronization signal block (SSB) in a second SSB set indicated by a first indication information; and transmit the first indication information, the first indication information indicating the second SSB set based on corresponding relationships between the SSBs in a first SSB set and a second index, wherein the SSBs corresponding to different time-domain positions in the first transmission window, the second SSB set is a subset of the first SSB set, the second index being representative of quasi-colocation relationships between the SSBs in the first SSB set, and the first SSB set comprising two SSBs corresponding to identical values of the second index, the two SSBs corresponding to identical values of the second index being quasi-colocated (QCLed). ### Claim 2 (depends on 1) The apparatus according to claim 1, wherein, at least one SSB in the second SSB set is not transmitted in the first transmission window. ### Claim 3 (depends on 1) The apparatus according to claim 1, wherein, two SSBs in the second SSB set or the first SSB set are quasi-colocated (QCLed). ### Claim 4 (depends on 1) The apparatus according to claim 1, wherein, time-domain positions of two SSBs in the second SSB set or the first SSB set are overlapped. ### Claim 5 (depends on 1) The apparatus according to claim 1, wherein the apparatus further comprises: a generating unit configured to generate at least one SSB in the second SSB set corresponding to the first transmission window. ### Claim 6 (depends on 1) The apparatus according to claim 1, wherein in the first transmission window, according to a channel state, the transmitter transmits the at least one SSB in the second SSB set corresponding to the first transmission window, or does not transmit an SSB. ### Claim 7 (depends on 1) The apparatus according to claim 1, wherein the first indication information indicates the second SSB set based on time-domain positions of SSBs in the first SSB set and quasi-colocation relationships between SSBs in the first SSB set. ### Claim 8 (depends on 7) The apparatus according to claim 7, wherein the first indication information indicates the second SSB set based on corresponding relationships between the SSBs in the first SSB set and a first index, the first index being representative of the time-domain positions of the SSBs in the first SSB set in the first transmission window, and the SSBs in the first SSB set corresponding to values of the first index one by one. ### Claim 9 (depends on 1) The apparatus according to claim 1, wherein the first indication information further indicates the second SSB set based on corresponding relationships between the SSBs in the first SSB set and a third index, the third index being representative of sequence numbers or time-domain positions of SSBs in a group consisting of the SSBs in the first SSB set corresponding to identical values of the second index in the group, and the SSBs in the group corresponding to values of the third index one by one. ### Claim 10 (depends on 9) The apparatus according to claim 9, wherein, the first indication information is transmitted via RRC signaling, and the first indication information corresponds to a first parameter or a second parameter, the first parameter being an existing parameter, and the second parameter being a new parameter. ### Claim 11 (depends on 1) The apparatus according to claim 1, wherein the apparatus further comprises: a third transmitter configured to transmit second indication information, the second indication information indicating quasi-colocation relationships between SSBs in the second SSB set. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein, the second indication information indicates that a first SSB and a second SSB in the second SSB set are quasi-colocated (QCLed), values of the second index to which the first SSB and the second SSB correspond being different. ### Claim 13 A data transmission apparatus, configured at a user equipment side, the apparatus comprising: a transceiver configured to receive at least one synchronization signal block (SSB) in a second SSB set indicated by a first indication information in a first transmission window, and receive the first indication information, the first indication information indicating the second SSB set based on corresponding relationships between the SSBs in a first SSB set and a second index, wherein the SSBs corresponding to different time-domain positions in the first transmission window, the second SSB set is a subset of the first SSB set, the second index being representative of quasi-colocation relationships between the SSBs in the first SSB set, and the first SSB set comprising two SSBs corresponding to identical values of the second index, the two SSBs corresponding to identical values of the second index being quasi-colocated (QCLed). ### Claim 14 (depends on 13) The apparatus according to claim 13, wherein the transceiver is further configured to receive a downlink signal and/or channel or transmit an uplink signal and/or channel according to time-domain positions of SSBs in a second SSB set and/or quasi-colocation relationships between the SSBs in the second SSB set. ### Claim 15 (depends on 14) The apparatus according to claim 14, wherein the apparatus further comprises: a first determining unit configured to determine the time-domain positions of the SSBs in the second SSB set and/or the quasi-colocation relationships between the SSBs in the second SSB set. ### Claim 16 (depends on 15) The apparatus according to claim 15, wherein the first determining unit determines the time-domain positions of the SSBs in the second SSB set and/or the quasi-colocation relationships between the SSBs in the second SSB set according to received first indication information and/or second indication information, the second indication information indicating the quasi-colocation relationships between the SSBs in the second SSB set. ### Claim 17 (depends on 16) The apparatus according to claim 16, wherein the first determining unit determines the quasi-colocation relationships between the SSBs in the second SSB set according to the second index and the received second indication information. ### Claim 18 (depends on 14) The apparatus according to claim 14, wherein the transceiver performs at least one of the following processing according to the time-domain positions of the SSBs in the second SSB set and/or the quasi-colocation relationships between the SSBs in the second SSB set: monitoring a physical downlink control channel; receiving a physical downlink data channel; transmitting an uplink signal and/or channel; and performing radio link monitoring. ### Claim 19 (depends on 18) The apparatus according to claim 18, wherein the apparatus further comprises: a second determining unit configured to determine quasi-colocation relationships between the SSBs in the second SSB set and at least one of the physical downlink control channel and the physical downlink data channel according to the second index and the received second indication information.