# US 10,484,102 B2 · Signaling mechanism to enable local operation for multi-antenna wireless communication systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,484,102 B2 - Document ID: US10484102B2 - Status: Granted - Kind: B2 - Application number: 15/492,982 - Filed: 2017-04-20 - Published: 2018-03-08 - Granted: 2019-11-19 - Earliest claimed: 2016-09-02 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Kaushik Chakraborty; Tao Luo; Andrzej Partyka; Sumeeth Nagaraja; Sony Akkarakaran; Makesh Pravin John Wilson; Aitzaz Ahmad - Web page: https://patentgrep.com/patent/US10484102B2 ## CPC - H04B 15/00: Suppression or limitation of noise or interference (by means associated with receiver H04B1/10) - H04B 17/318: Received signal strength - 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 5/0069: {Allocation based on distance or geographical location} - H04W 24/02: Arrangements for optimising operational condition - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 52/0235: {where the received signal is a power saving command} - H04W 52/0258: {controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day} - H04W 72/04: Wireless resource allocation - H04W 72/044: based on the type of the allocated resource - H04W 72/51: based on terminal or device properties - H04W 72/541: using the level of interference - H04L 1/0026: {Transmission of channel quality indication} - H04L 5/0023: {Time-frequency-space} - H04L 25/0202: {Channel estimation} - H04W 52/325: {Power control of control or pilot channels} - H04W 72/046: {the resource being in the space domain, e.g. beams} - Y02D 30/70: in wireless communication networks - H04B: TRANSMISSION - 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) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract An apparatus capable of self-calibration in a low-interference environment is desired. In an aspect, the apparatus may be a user equipment (UE) or a neighboring base station. The device receives, from a base station, a self-calibration notification indicating one or more resources allocated for a self-calibration of the base station. The device performs, in response to the self-calibration notification, at least one of deactivating at least one component of the device based on the one or more allocated resources or adjusting utilization of the one or more allocated resources allocated for the self-calibration of the base station. ## Claims ### Claim 1 A method of wireless communication by a device, comprising: receiving, from a base station, a self-calibration notification indicating a self-calibration to be performed by the base station and one or more resources allocated for [the self-calibration of the base station; and performing, by the device, in response to the self-calibration notification, at least one of deactivating at least one component of the device based on the one or more allocated resources or adjusting utilization of the one or more allocated resources allocated for the self-calibration of the base station, wherein the deactivating one component of the device or adjusting utilization of the one or more allocated resources reduces interference with a reference signal transmitted during the self-calibration of the base station. ### Claim 2 (depends on 1) The method of claim 1, wherein the at least one of the deactivating the at least one component of the device or the adjusting the utilization of the one or more allocated resources is performed during a time period corresponding to the one or more allocated resources. ### Claim 3 (depends on 2) The method of claim 2, wherein the deactivating the at least one component of the device comprises: entering a sleep mode of the device during the time period. ### Claim 4 (depends on 1) The method of claim 1, wherein the adjusting the utilization of the one or more allocated resources comprises: determining one or more UEs that are served by the device and are within a communication range of the base station; and refraining from assigning the one or more allocated resources to the one or more UEs. ### Claim 5 (depends on 1) The method of claim 1, wherein the adjusting the utilization of the one or more allocated resources comprises: refraining from utilizing the one or more allocated resources for communication of the device. ### Claim 6 (depends on 1) The method of claim 1, further comprising: receiving, from the base station, an additional resource indication indicating one or more additional resources allocated for the self-calibration of the base station; and continuing to perform at least one of the deactivating the at least one component of the UE or the adjusting the utilization of the one or more additional resources for an additional time period corresponding to the one or more additional resources. ### Claim 7 (depends on 1) The method of claim 1, wherein the device is a user equipment (UE) or a neighboring base station. ### Claim 8 A method of wireless communication by a base station, comprising: allocating one or more resources for a self-calibration of the base station; and transmitting, to one or more devices, a self-calibration notification indicating the allocated one or more resources, the one or more devices including at least one UE, or at least one neighboring base station, or a combination thereof; and performing the self-calibration of the base station based on the allocated one or more resources, wherein the performing the self-calibration comprises: transmitting a reference signal using the allocated one or more resources; measuring one or more parameters from the transmitted reference signal; and calibrating the base station based on the measured one or more parameters and based on one or more standard parameters. ### Claim 9 (depends on 8) The method of claim 8, wherein the reference signal includes at least one of a cell-specific reference signal, CSI reference signal or a calibration reference signal used for the self-calibration. ### Claim 10 (depends on 8) The method of claim 8, wherein the calibrating the base station is based on a comparison between the measured one or more parameters and the one or more standard parameters. ### Claim 11 (depends on 8) The method of claim 8, wherein the one or more parameters include at least one of an amplitude or a phase. ### Claim 12 (depends on 8) The method of claim 8, wherein the one or more resources include a plurality of transmit resources, and wherein one or more of the plurality of transmit resources are used for each transmission of the reference signal based on a predefined pattern. ### Claim 13 (depends on 8) The method of claim 8, further comprising: transmitting, to the one or more devices, an additional resource indication indicating one or more additional resources allocated for the self-calibration of the base station. ### Claim 14 (depends on 8) The method of claim 8, further comprising: refraining from transmitting the self-calibration notification to one or more second devices if the second devices are not located in a region corresponding to the direction of a beam used for the self-calibration. ### Claim 15 (depends on 8) The method of claim 8, wherein the self-calibration notification is transmitted to the one or more devices if the one or more devices are located in a region corresponding to a direction of a beam used for the self-calibration. ### Claim 16 A device for wireless communication, comprising: a memory; and at least one processor coupled to the memory and configured to: receive, from a base station, a self-calibration notification indicating a self-calibration to be performed by the base station and one or more resources allocated for the self-calibration of the base station; and perform, by the device, in response to the self-calibration notification, at least one of deactivating at least one component of the device based on the one or more allocated resources or adjusting utilization of the one or more allocated resources allocated for the self-calibration of the base station, wherein the deactivating one component of the device or adjusting utilization of the one or more allocated resources reduces interference with a reference signal transmitted during the self-calibration of the base station. ### Claim 17 (depends on 16) The device of claim 16, wherein the at least one of the deactivating the at least one component of the device or the adjusting of the utilization of the one or more allocated resources is performed during a time period corresponding to the allocated one or more allocated resources. ### Claim 18 (depends on 17) The device of claim 17, wherein the at least one processor to perform the deactivating the at least one component of the device is configured to: enter a sleep mode of the device during the time period. ### Claim 19 (depends on 16) The device of claim 16, wherein the at least one processor configured to perform the adjusting the utilization of the one or more allocated resources is configured to: determine one or more UEs that are served by the device and are within a communication range of the base station; and refrain from assigning the one or more allocated resources to the one or more UEs. ### Claim 20 (depends on 16) The device of claim 16, wherein the at least one processor configured to perform the adjusting the utilization of the one or more allocated resources is configured to: refrain from utilizing the one or more allocated resources for communication of the device. ### Claim 21 (depends on 16) The device of claim 16, wherein the at least one processor is further configured to: receive, from the base station, an additional resource indication indicating one or more additional resources allocated for the self-calibration of the base station; and perform at least one of the deactivating the at least one component of the UE or adjusting utilization of the one or more additional resources for an additional time period corresponding to the one or more additional resources. ### Claim 22 A base station for wireless communication, comprising: a memory; and at least one processor coupled to the memory and configured to: allocate one or more resources for a self-calibration of the base station; transmit, to one or more devices, a self-calibration notification indicating the allocated one or more resources, the one or more devices including at least one UE, or at least one neighboring base station, or a combination thereof; and perform the self-calibration of the base station based on the allocated one or more resources, wherein the at least one processor is further configured to: transmit a reference signal using the allocated one or more resources; measure one or more parameters from the transmitted reference signal; and calibrate the base station based on the measured one or more parameters and based on one or more standard parameters. ### Claim 23 (depends on 22) The base station of claim 22, wherein the reference signal includes at least one of a demodulation reference signal, a sounding reference signal or a calibration reference signal used for calibration. ### Claim 24 (depends on 22) The base station of claim 22, wherein the base station is calibrated based on a comparison between the measured one or more parameters and the one or more standard parameters. ### Claim 25 (depends on 22) The base station of claim 22, wherein the one or more resources include a plurality of transmit resources, and wherein one or more of the plurality of transmit resources are used for each transmission of the reference signal based on a predefined pattern. ### Claim 26 (depends on 22) The base station of claim 22, wherein the at least one processor is further configured to: transmit, to the one or more devices, an additional resource indication indicating one or more additional resources allocated for the self-calibration of the base station. ### Claim 27 (depends on 22) The base station of claim 22, wherein the at least one processor is further configured to: refraining from transmitting the self-calibration notification to one or more second devices if the second devices are not located in a region corresponding to the direction of a beam used for the self-calibration. ### Claim 28 (depends on 22) The base station of claim 22, wherein the self-calibration notification is transmitted to the one or more devices if the one or more devices are located in a region corresponding to a direction of a beam used for the self-calibration.