# US 2020/0288409 A1 · Support of high pathloss mode > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288409 A1 - Document ID: US20200288409A1 - Status: Published application - Kind: A1 - Application number: 16/807,008 - Filed: 2020-03-02 - Published: 2020-09-10 - Earliest claimed: 2019-03-06 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Junyi Li; Juergen Cezanne; Andrzej Partyka; Ozge Koymen - Web page: https://patentgrep.com/patent/US20200288409A1 ## CPC - H04W 52/242: {taking into account path loss} - H04B 7/0417: Feedback systems - H04B 7/0617: {for beam forming} - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04B 7/0632: {Channel quality parameters, e.g. channel quality indicator [CQI]} - H04B 7/0696: {Determining beam pairs} - H04B 7/06964: {Re-selection of one or more beams after beam failure} - H04B 7/088: {using beam selection} - H04L 1/0003: {by switching between different modulation schemes} - H04L 1/0009: {by adapting the channel coding (H04L1/1812 takes precedence)} - H04L 1/0015: {characterised by the adaptation strategy} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W 56/001: {Synchronization between nodes} - H04W 88/14: Backbone network devices - H04L 5/001: {the frequencies being arranged in component carriers} - 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: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - 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 wireless device (e.g., a user equipment and/or base station) may operate in a first mode in a wireless network over a radio frequency spectrum band. The wireless device may receive a signal indicating that a value of the radio frequency spectrum band has satisfied a threshold value. The wireless device may switch, based at least in part on the signal indicating that the value has satisfied the threshold value, from the first mode to a second mode for wireless communications in the wireless network, wherein a first length of a first synchronization signal block associated with the first mode is shorter than a second length of a second synchronization signal block associated with the second mode. ## Claims ### Claim 1 A method for wireless communications at a wireless device, comprising: operating in a first mode in a wireless network over a radio frequency spectrum band; receiving a signal indicating that a value of the radio frequency spectrum band has satisfied a threshold value; and switching, based at least in part on the signal indicating that the value has satisfied the threshold value, from the first mode to a second mode for wireless communications in the wireless network, wherein a first length of a first synchronization signal block associated with the first mode is shorter than a second length of a second synchronization signal block associated with the second mode. ### Claim 2 (depends on 1) The method of claim 1, wherein the wireless network comprises an integrated access and backhaul (IAB) network. ### Claim 3 (depends on 2) The method of claim 2, further comprising: performing wireless backhaul communications with a second wireless device of the IAB network according to the second mode. ### Claim 4 (depends on 3) The method of claim 3, further comprising: performing wireless backhaul communications with a third wireless device of the IAB network according to the first pathloss mode or the second pathloss mode. ### Claim 5 (depends on 1) The method of claim 1, wherein the value comprises a pathloss value and the threshold value comprises a threshold pathloss value. ### Claim 6 (depends on 5) The method of claim 5, further comprising: determining that the signal was received at a received power level below a threshold level, wherein the signal being received at the received power level below the threshold level indicates that the pathloss value has surpassed the threshold pathloss value. ### Claim 7 (depends on 1) The method of claim 1, further comprising: transmitting an indication to one or more other wireless devices that the wireless device has switched to the second mode. ### Claim 8 (depends on 1) The method of claim 1, further comprising: decoding the signal to determine that the value has surpassed the threshold value. ### Claim 9 (depends on 1) The method of claim 1, wherein the signal comprises at least one of an in-band signal, an out-of-band signal, a broadcast signal, a unicast signal, or a combination thereof. ### Claim 10 (depends on 1) The method of claim 1, wherein a first length of a first reference signal associated with the first mode is shorter than a second length of a second reference signal associated with the second mode. ### Claim 11 (depends on 1) The method of claim 1, wherein a first modulation and coding scheme (MCS) associated with the first mode is higher than a second MCS associated with the second pathloss mode. ### Claim 12 (depends on 1) The method of claim 1, wherein a first bandwidth associated with the first mode is wider than a second bandwidth associated with the second mode. ### Claim 13 (depends on 1) The method of claim 1, wherein a first beam width associated with the first mode is narrower than a second beam width associated with the second mode. ### Claim 14 (depends on 1) The method of claim 1, wherein the radio frequency spectrum band comprises an unlicensed radio frequency spectrum band. ### Claim 15 (depends on 1) The method of claim 1, wherein the wireless network comprises a millimeter wave wireless network. ### Claim 16 An apparatus for wireless communications at a wireless device, comprising: a processor, memory coupled to the processor, the processor and memory configured to: operate in a first mode in a wireless network over a radio frequency spectrum band; receive a signal indicating that a value of the radio frequency spectrum band has satisfied a threshold value; and switch, based at least in part on the signal indicating that the value has satisfied the threshold value, from the first mode to a second mode for wireless communications in the wireless network, wherein a first length of a first synchronization signal block associated with the first mode is shorter than a second length of a second synchronization signal block associated with the second mode. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the wireless network comprises an integrated access and backhaul (IAB) network. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the processor and memory are configured to: perform wireless backhaul communications with a second wireless device of the IAB network according to the second mode. ### Claim 19 (depends on 18) The apparatus of claim 18, wherein the processor and memory are configured to: perform wireless backhaul communications with a third wireless device of the IAB network according to the first pathloss mode or the second pathloss mode. ### Claim 20 (depends on 16) The apparatus of claim 16, wherein the value comprises a pathloss value and the threshold value comprises a threshold pathloss value. ### Claim 21 (depends on 20) The apparatus of claim 20, wherein the processor and memory are configured to: determine that the signal was received at a received power level below a threshold level, wherein the signal being received at the received power level below the threshold level indicates that the pathloss value has surpassed the threshold pathloss value. ### Claim 22 (depends on 16) The apparatus of claim 16, wherein the processor and memory are configured to: transmit an indication to one or more other wireless devices that the wireless device has switched to the second mode. ### Claim 23 (depends on 16) The apparatus of claim 16, wherein the processor and memory are configured to: decode the signal to determine that the value has surpassed the threshold value. ### Claim 24 (depends on 16) The apparatus of claim 16, wherein the signal comprises at least one of an in-band signal, an out-of-band signal, a broadcast signal, a unicast signal, or a combination thereof. ### Claim 25 (depends on 16) The apparatus of claim 16, wherein a first length of a first reference signal associated with the first mode is shorter than a second length of a second reference signal associated with the second mode. ### Claim 26 (depends on 16) The apparatus of claim 16, wherein a first modulation and coding scheme (MCS) associated with the first mode is higher than a second MCS associated with the second pathloss mode. ### Claim 27 (depends on 16) The apparatus of claim 16, wherein a first bandwidth associated with the first mode is wider than a second bandwidth associated with the second mode. ### Claim 28 (depends on 16) The apparatus of claim 16, wherein a first beam width associated with the first mode is narrower than a second beam width associated with the second mode. ### Claim 29 An apparatus for wireless communications at a wireless device, comprising: means for operating in a first mode in a wireless network over a radio frequency spectrum band; means for receiving a signal indicating that a value of the radio frequency spectrum band has satisfied a threshold value; and means for switching, based at least in part on the signal indicating that the value has satisfied the threshold value, from the first mode to a second mode for wireless communications in the wireless network, wherein a first length of a first synchronization signal block associated with the first mode is shorter than a second length of a second synchronization signal block associated with the second mode. ### Claim 30 A non-transitory computer-readable medium storing code for wireless communications at a wireless device, the code comprising instructions executable by a processor to: operate in a first mode in a wireless network over a radio frequency spectrum band; receive a signal indicating that a value of the radio frequency spectrum band has satisfied a threshold value; and switch, based at least in part on the signal indicating that the value has satisfied the threshold value, from the first mode to a second mode for wireless communications in the wireless network, wherein a first length of a first synchronization signal block associated with the first mode is shorter than a second length of a second synchronization signal block associated with the second mode.