# US 2020/0403689 A1 · Repeater device for 5g new radio communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0403689 A1 - Document ID: US20200403689A1 - Status: Published application - Kind: A1 - Application number: 17/011,042 - Filed: 2020-09-03 - Published: 2020-12-24 - Earliest claimed: 2017-07-11 - Assignees: Movandi Corporation - Applicants: Movandi Corporation - Inventors: Ahmadreza ROFOUGARAN; Brima Ibrahim; Raghu Mulagada; Walid Nabhane; Mohsen Pourkhaatoun; Wan-Jong Kim; Maryam ROFOUGARAN; Sam GHARAVI - Web page: https://patentgrep.com/patent/US20200403689A1 ## CPC - H04B 7/15514: {for shadowing compensation (for satellite mobile telephony service systems H04B7/18536)} - H04B 7/0413: MIMO systems - H04B 7/0617: {for beam forming} - H04B 7/0632: {Channel quality parameters, e.g. channel quality indicator [CQI]} - H04B 7/06954: {Sidelink beam training with support from third instance, e.g. the third instance being a base station} - H04B 7/15: Active relay systems - H04B 7/15528: {Control of operation parameters of a relay station to exploit the physical medium} - H04B 7/1555: {Selecting relay station antenna mode, e.g. selecting omnidirectional -, directional beams, selecting polarizations} - H04B 7/165: employing angle modulation - H04B 7/2041: {Spot beam multiple access} - H04B 17/102: {Power radiated at antenna} - H04W 52/245: {taking into account received signal strength} - H04W 52/262: {taking into account adaptive modulation and coding [AMC] scheme} - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 52/46: in multi-hop networks, e.g. wireless relay networks - H04W 56/001: {Synchronization between nodes} - H04L 5/0023: {Time-frequency-space} - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04B: TRANSMISSION - 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 A repeater device for New Radio (NR) communication, includes a baseband processor that establishes a communication link with a base station and decodes control information that is received from the base station through a control channel. The baseband processor further aligns a timing reference of the repeater device with that of an NR cell frame for an uplink or a downlink time division duplex (TDD) switching, based on the decoded control information. The baseband processor further selects and forms one or more donor beams of RF signals at a donor side of the repeater device and one or more service beams of RF signals at a service side of the repeater device, based on the decoded control information and the aligned timing reference with that of the NR cell frame for the uplink or the downlink TDD switching for communication in an NR frequency band. ## Claims ### Claim 1 A repeater device for New Radio (NR) communication, comprising: a baseband processor configured to: establish a communication link with a base station; decode control information that is received from the base station through a control channel; align a timing reference of the repeater device with that of an NR cell frame for an uplink or a downlink time division duplex (TDD) switching, based on the decoded control information; and select and form one or more donor beams of RF signals at a donor side of the repeater device and one or more service beams of RF signals at a service side of the repeater device, based on the decoded control information and the aligned timing reference with that of the NR cell frame for the uplink or the downlink TDD switching for communication in an NR frequency band. ### Claim 2 (depends on 1) The repeater device according to claim 1, wherein the communication link is established with the base station is one of: an in-band link, an out-of-band link, or a sidelink. ### Claim 3 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to obtain the control information associated with the TDD switching from the base station as a modulated pulse through the control channel in order to align the timing reference for the uplink or the downlink TDD switching. ### Claim 4 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to decode NR synchronization signals and Physical Broadcast Channels (PBCHs) as a part of the decoded control information in order to align the timing reference for the uplink or the downlink TDD switching. ### Claim 5 (depends on 4) The repeater device according to claim 4, wherein the decoded control information in addition to the NR synchronization signals and the Physical Broadcast Channels (PBCHs) further comprises one or more of: a periodicity and a downlink/uplink cycle ratio, a TDD pattern, a NR TDD slot format, or a plurality of NR TDD slot formats in a periodic sequence. ### Claim 6 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to obtain a physical cell identifier (PCID), an absolute radio-frequency channel number (ARFCN), and other properties of the base station through a network in order to automatically align one donor beam of the one or more donor beams of the RF signals towards the base station. ### Claim 7 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to form a plurality of donor beams of RF signals concurrently towards a plurality of target base stations or a plurality of other repeater devices, based on a plurality of requested donor beam identifiers, wherein the plurality of requested donor beam identifiers are shared by one or the plurality of target base stations through the control channel to reach the repeater device. ### Claim 8 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to form a plurality of service beams of RF signals concurrently towards a plurality of user equipment (UEs) or a plurality of other repeater devices, based on a plurality of requested service beam identifiers, wherein the plurality of requested service beam identifiers are shared to the repeater device via one or more control messages by one or a plurality of base stations, or the plurality of UEs. ### Claim 9 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to adjust a forward end-to-end gain of the repeater device for a downlink or an uplink communication based on a request received through the control channel. ### Claim 10 (depends on 1) The repeater device according to claim 1, further comprising a filter, wherein the baseband processor is further configured to tune a user plane's frequency response via the filter in a downlink direction to allow or reject one or more bandwidth parts (BWPs) of one or more NR frequency bands, wherein information corresponding to the one or more bandwidth parts that the repeater device is expected to amplify and forward in the downlink direction is send to the repeater device by the base station through the control channel. ### Claim 11 (depends on 1) The repeater device according to claim 1, further comprising a filter, wherein the baseband processor is further configured to tune a user plane's frequency response via the filter in an uplink direction to allow or reject one or more bandwidth parts (BWPs) of one or more NR frequency bands, wherein information corresponding to the one or more bandwidth parts that the repeater device is expected to amplify and forward in the uplink direction is send to the repeater device by the base station or a user equipment through the control channel. ### Claim 12 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to apply a change in a frequency in a relayed signal at the service side in a downlink direction relative to a received signal at the donor side. ### Claim 13 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to apply a change in a frequency in a relayed signal at the donor side in an uplink direction relative to a received signal at the service side. ### Claim 14 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to apply a defined power back-off from a set of amplifiers in a downlink radio frequency chain at the service side. ### Claim 15 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to apply a defined power back-off from a set of amplifiers in an uplink radio frequency chain at the donor side. ### Claim 16 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to set at least one of: an idle mode, a sleep mode, or an ultra-low-power mode for a scheduled period of time, based on network traffic information. ### Claim 17 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to communicate a channel quality indicator and other channel estimates to the base station or a network as a feedback via the established communication link. ### Claim 18 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to communicate with a specified remote server via a management control plane to acquire data and instructions to allow remote execution of one or more operations at the repeater device including an software upgrade. ### Claim 19 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to: measure quality information of a plurality of communication links for a plurality of physical cell identifier (PCIDs) which are received from a network or one or more base stations; and communicate the received quality information of the received plurality of PCIDs back to the network or the one or more base stations as a feedback. ### Claim 20 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to measure an uplink signal quality information of specified uplink slots and beam settings and communicate the measured uplink signal quality information to a network or the base station, wherein the measurement is based on a control instruction and configuration from the network or the base station received at the repeater device. ### Claim 21 (depends on 1) The repeater device according to claim 1, wherein the baseband processor is further configured to execute a beam configuration of the repeater device for each symbol or slot of the NR cell frame through the established communication link, wherein the beam configuration is statically or dynamically configured based on a control instruction communicated by a network or the base station through the established communication link. ### Claim 22 A method implemented in a repeater device for New Radio (NR) communication, the method comprising: establishing a communication link with a base station; decoding control information received from the base stations through a control channel; aligning a timing reference of the repeater device with that of an NR cell frame for an uplink or a downlink time division duplex (TDD) switching, based on the decoded control information; and selecting and forming one or more donor beams of RF signals at a donor side of the repeater device and one or more service beams of RF signals at a service side of the repeater device, based on the decoded control information and the aligned timing reference with that of the NR cell frame for the uplink or the downlink TDD switching for communication in an NR frequency band. ### Claim 23 (depends on 19) The method according to claim 19, wherein the communication link is established with the base station is one of: an in-band link, an out-of-band link, or a sidelink.