# US 12,010,637 B2 · Indication methods for synchronization signal block configuration changes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,637 B2 - Document ID: US12010637B2 - Status: Granted - Kind: B2 - Application number: 17/347,259 - Filed: 2021-06-14 - Published: 2021-12-16 - Granted: 2024-06-11 - Earliest claimed: 2020-06-12 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Anantha Krishna Karthik Nagarajan; Jun Ma; Tao Luo; Peter Gaal; Qiang Wu; Xiaoxia Zhang; Jing Sun; Mehmet Izzet Gurelli; Iyab Issam Sakhnini; Ahmed Abdelaziz Ibrahim Abdelaziz Zewail; Juan Montojo; Sungwoo Park - Web page: https://patentgrep.com/patent/US12010637B2 ## CPC - H04W 56/001: {Synchronization between nodes} - 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 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 48/16: Discovering, processing access restriction or access information - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 76/11: Allocation or use of connection identifiers - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0057: {Physical resource allocation for CQI} - H04L 27/0006: {Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio (for spectrum sharing between different networks H04W16/14)} - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - H04W 72/569: {of the traffic information} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a configuration of a set of synchronization signal blocks (SSBs) to be transmitted by a first base station or a second base station. In some cases, the UE may be served by the first base station and the UE may receive, from the first base station or the second base station, a message indicating that a transmission of at least one SSB of the set of SSBs is canceled and indicating resources for a signal (e.g., a reference signal, alternative SSB transmission) to be transmitted by the first base station or the second base station as an alternative to the canceled at least one SSB. The UE may receive, based on the received message from the first base station or the second base station, the signal using the indicated resources. ## Claims ### Claim 1 An apparatus for wireless communications at a user equipment (UE), comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: identify a configuration of a plurality of synchronization signal blocks to be transmitted by a first network entity; receive, from a second network entity that is a serving network entity for the UE, a message indicating that a transmission of at least one synchronization signal block of the plurality of synchronization signal blocks is canceled, wherein the message indicates resources for a signal to be transmitted by the first network entity as an alternative to the canceled at least one synchronization signal block; and receive, from the first network entity and based at least in part on the message received from the second network entity, the signal using the indicated resources. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the instructions to receive the message indicating that the transmission of the at least one synchronization signal block is canceled are executable by the processor to cause the apparatus to: receive, in the message and for each synchronization signal block of the canceled at least one synchronization signal block, an index or a resource location associated with the canceled at least one synchronization signal block. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: receive, in the message, an indication of a duration for which the at least one synchronization signal block is canceled. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the signal is a channel state information reference signal. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein the resources for the channel state information reference signal are periodically or aperiodically configured. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the signal is an alternative synchronization signal block. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the at least one synchronization signal block is canceled based at least in part on ultra-reliable low latency communication traffic being scheduled on resources for the at least one synchronization signal block. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the alternative synchronization signal block is quasi co-located with the ultra-reliable low latency communication traffic. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to: receive, from the first network entity, the signal using the indicated resources; perform a measurement procedure of the received signal and one or more synchronization signal blocks of the plurality of synchronization signal blocks, the measurement procedure comprising a layer three mobility measurement procedure; and transmit, to the second network entity, a measurement report indicating a result of the performed measurement procedure. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein the instructions to receive the message are further executable by the processor to cause the apparatus to: receive group-based downlink control information that includes the message indicating that the transmission of at least one synchronization signal block is canceled and indicating the resources for the signal to be transmitted. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the group-based downlink control information includes a cell identification (ID) of the first network entity. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein the at least one synchronization signal block is canceled based at least in part on ultra-reliable low latency communication traffic being scheduled on resources indicated by the configuration for the at least one synchronization signal block, and the instructions are further executable by the processor to cause the apparatus to: receive the ultra-reliable low latency communication traffic on the resources. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the instructions are further executable by the processor to cause the apparatus to: rate match the ultra-reliable low latency communication traffic around the signal; or receive the ultra-reliable low latency communication traffic and the signal via frequency division multiplexing. ### Claim 14 An apparatus for wireless communications at a first network entity, comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: identify a configuration of a plurality of synchronization signal blocks to be transmitted by the first network entity; identify that downlink traffic is to be transmitted on resources indicated by the identified configuration for at least one synchronization signal block of the plurality of synchronization signal blocks; transmit, to a second network entity that is a serving network entity for a user equipment (UE), a message indicating that a transmission of the at least one synchronization signal block of the plurality of synchronization signal blocks is canceled, wherein the message indicates resources for a signal to be transmitted by the first network entity as an alternative to the canceled at least one synchronization signal block; and transmit, to the UE based at least in part on the message, the signal using the indicated resources. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the instructions to transmit the message indicating that the transmission of the at least one synchronization signal block is canceled are executable by the processor to cause the apparatus to: transmit, in the message and for each synchronization signal block of the canceled at least one synchronization signal block, an index or a resource location associated with the canceled at least one synchronization signal block. ### Claim 16 (depends on 14) The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to: transmit, in the message, an indication of a duration for which the at least one synchronization signal block is canceled. ### Claim 17 (depends on 14) The apparatus of claim 14, wherein the signal is a channel state information reference signal. ### Claim 18 (depends on 14) The apparatus of claim 14, wherein the signal is an alternative synchronization signal block. ### Claim 19 (depends on 14) The apparatus of claim 14, wherein the instructions are further executable by the processor to cause the apparatus to: transmit, to the UE, the signal using the indicated resources; and receive, from the UE, a measurement report indicating a result of the UE performing a measurement procedure on the signal, the measurement report comprising one or more of a layer one measurement report or a layer three mobility measurement report. ### Claim 20 (depends on 14) The apparatus of claim 14, wherein the message is transmitted via a backhaul link to the second network entity. ### Claim 21 (depends on 14) The apparatus of claim 14, wherein the message includes a cell identification (ID) of the first network entity. ### Claim 22 An apparatus for wireless communications at a first network entity, comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: identify a configuration of a plurality of synchronization signal blocks to be transmitted by a second network entity; receive, from the second network entity, an indication that downlink traffic is to be transmitted by the second network entity on resources indicated by the identified configuration for at least one synchronization signal block of the plurality of synchronization signal blocks; and transmit, to a user equipment (UE) served by the first network entity, a message indicating that a transmission of the at least one synchronization signal block of the plurality of synchronization signal blocks by the second network entity is canceled and indicating resources for a signal to be transmitted by the second network entity as an alternative to the canceled at least one synchronization signal block. ### Claim 23 A method for wireless communications at a user equipment (UE), comprising: identifying a configuration of a plurality of synchronization signal blocks to be transmitted by a first network entity; receiving, from a second network entity that is a serving network entity for the UE, a message indicating that a transmission of at least one synchronization signal block of the plurality of synchronization signal blocks is canceled, wherein the message indicates resources for a signal to be transmitted by the first network entity as an alternative to the canceled at least one synchronization signal block; and receiving, from the first network entity and based at least in part on the received message received from the second network entity, the signal using the indicated resources. ### Claim 24 (depends on 23) The method of claim 23, wherein receiving the message indicating that the transmission of the at least one synchronization signal block is canceled comprises: receiving, in the message and for each synchronization signal block of the canceled at least one synchronization signal block, an index or a resource location associated with the canceled at least one synchronization signal block. ### Claim 25 (depends on 23) The method of claim 23, further comprising: receiving, in the message, an indication of a duration for which the at least one synchronization signal block is canceled. ### Claim 26 (depends on 23) The method of claim 23, wherein the signal is a channel state information reference signal. ### Claim 27 (depends on 23) The method of claim 23, wherein the signal is an alternative synchronization signal block. ### Claim 28 (depends on 23) The method of claim 23, wherein receiving the message indicating that the transmission of the at least one synchronization signal block is canceled comprises: receiving group-based downlink control information that includes the message indicating that the transmission of the at least one synchronization signal block is canceled and indicating the resources for the signal to be transmitted, wherein the group-based downlink control information includes a cell identification (ID) of the first network entity.