# US 2019/0174346 A1 · Beam management > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174346 A1 - Document ID: US20190174346A1 - Status: Published application - Kind: A1 - Application number: 16/323,796 - Filed: 2017-08-11 - Published: 2019-06-06 - Earliest claimed: 2016-08-11 - Assignees: Convida Wireless, LLC - Applicants: Convida Wireless, LLC - Inventors: Joseph M. MURRAY; Pascal M. ADJAKPLE; Wei CHEN; Lakshmi R. IYER; Qian ZHANG; Guodong ZHANG; Allan Y. TSAI - Web page: https://patentgrep.com/patent/US20190174346A1 ## CPC - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04B 7/0408: using two or more beams, i.e. beam diversity - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04B 7/06952: {Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping} - 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 16/28: using beam steering - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04W 80/02: Data link layer protocols - 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 Layer 2 structures and procedures may be used for beam management in new radio networks. In a first example, a new radio layer 2 structure may be used to facilitate beam management at the medium access control sublayer. In a second example, new radio feedback mechanisms may be signaled between peer medium access control entities and used to assist with beam management. In a third example, new radio beam management procedures may include new radio beam training, new radio beam alignment, new radio beam tracking, or new radio beam configuration. In a fourth example, new radio connection control procedure may include new radio initial access or new radio mobility management. ## Claims ### Claim 1 An apparatus that performs beam management, the apparatus comprising: a processor; and a memory coupled with the processor, the memory storing executable instructions that when executed by the processor cause the processor to effectuate operations comprising: providing, by a medium access control layer, a beam training command and beam index; and in response to providing the beam training command, receiving a beam training reference signal. ### Claim 2 (depends on 1) The apparatus of claim 1, the operations further comprising: in response to receiving a beam training reference signal, performing measurements on the beam training reference signal; based on the measurements on the beam training reference signal and traffic distribution information of a wireless network, determining that a threshold measurement associated with one or more beams has been reached, wherein a first beam of the one or more beams is identified by the beam index; and based on the determining that the threshold measurement associated with the one or more beams has been reached, providing instructions to configure the one or more beams, the instructions comprising a beam release command or a beam addition command. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein the threshold measurement associated with the one or more beams has been reached comprises a number of serving beams. ### Claim 4 (depends on 2) The apparatus of claim 2, wherein the threshold measurement associated with the one or more beams has been reached comprises a candidate beam an offset better than a serving beam. ### Claim 5 (depends on 1) The apparatus of claim 1, the operations further comprising: in response to receiving a beam training reference signal, performing measurements on the beam training reference signal; based on the measurements on the beam training reference signal, determining that a threshold measurement associated with one or more beams has been reached, wherein a first beam of the one or more beams is identified by the beam index; and based on the determining that the threshold measurement associated with the one or more beams has been reached, providing instructions to report at least a first beam measurement of the one or more beams to a peer medium access control layer. ### Claim 6 (depends on 1) The apparatus of claim 1, the operations further comprising: in response to receiving a beam training reference signal, performing measurements on the beam training reference signal; and based on the measurements on the beam training reference signal, determining that a threshold measurement associated with one or more beams has been reached, wherein a first beam of the one or more beams is identified by the beam index and wherein the threshold measurement is a number of serving beams. ### Claim 7 (depends on 1) The apparatus of claim 1, the operations further comprising: in response to receiving a beam training reference signal, performing measurements on the beam training reference signal; and based on the measurements on the beam training reference signal, determining that a threshold measurement associated with one or more beams has been reached, wherein a first beam of the one or more beams is identified by the beam index and wherein the threshold measurement is a number of candidate beams. ### Claim 8 (depends on 1) The apparatus of claim 1, the operations further comprising: in response to receiving a beam training reference signal, performing measurements on the beam training reference signal; based on the measurements on the beam training reference signal, determining that a threshold measurement associated with one or more beams has been reached, wherein a first beam of the one or more beams is identified by the beam index; and based on the determining that the threshold measurement associated with the one or more beams has been reached, providing instructions to report at least a first beam measurement of the one or more beams to a peer medium access control layer, wherein the report of the at least first beam measurement of the one or more beams to the peer medium access control layer is within a medium access control layer control element. ### Claim 9 (depends on 1) The apparatus of claim 1, the operations further comprising: in response to receiving a beam training reference signal, performing measurements on the beam training reference signal; based on the measurements on the beam training reference signal, determining that a threshold measurement associated with one or more beams has been reached, wherein a first beam of the one or more beams is identified by the beam index; and based on the determining that the threshold measurement associated with the one or more beams has been reached, providing instructions to send a medium access control layer control element to a peer medium access control layer, wherein the medium access control layer control element is identified by a MAC protocol data unit subheader with a logical channel identifier, the logical channel identifier comprises a value that corresponds to a beam measurement. ### Claim 10 (depends on 1) The apparatus of claim 1, the operations further comprising: in response to receiving a beam training reference signal, performing measurements on the beam training reference signal; based on the measurements on the beam training reference signal, determining that a threshold measurement associated with one or more beams has been reached, wherein a first beam of the one or more beams is identified by the beam index; and based on the determining that the threshold measurement associated with the one or more beams has been reached, providing instructions to report at least a beam alignment command to a peer medium access control layer. ### Claim 11 (depends on 1) The apparatus of claim 1, the operations further comprising: in response to receiving a beam training reference signal, performing measurements on the beam training reference signal; based on the measurements on the beam training reference signal, determining that a threshold measurement associated with one or more beams has been reached, wherein a first beam of the one or more beams is identified by the beam index; and based on the determining that the threshold measurement associated with the one or more beams has been reached, sending a message that comprises instructions to report at least a beam tracking command to a peer medium access control layer. ### Claim 12 (depends on 1) The apparatus of claim 1, the operations further comprising: in response to receiving a beam training reference signal, performing measurements on the beam training reference signal; based on the measurements on the beam training reference signal, determining that a threshold measurement associated with one or more beams has been reached, wherein a first beam of the one or more beams is identified by the beam index; and based on the determining that the threshold measurement associated with the one or more beams has been reached, providing instructions to report at least a beam addition command or a beam release command to a peer medium access control layer, wherein the messages is a medium access control layer control element. ### Claim 13 (depends on 1) The apparatus of claim 1, wherein the beam training reference signal is associated with beam sweeping. ### Claim 14 (depends on 1) The apparatus of claim 1, wherein the medium access control layer uses the beam index to identify a beam. ### Claim 15 (depends on 1) The apparatus of claim 1, wherein the medium access control layer uses the beam index to look up associated characteristics of a beam. ### Claim 16 (depends on 1) The apparatus of claim 1, the operations further comprising in response to receiving a beam training reference signal, performing measurements on the beam training reference signal. ### Claim 17 (depends on 1) The apparatus of claim 1, the operations further comprising in response to receiving a beam training reference signal, performing measurements on the beam training reference signal, wherein the measurements comprise reference signal received power. ### Claim 18 (depends on 1) The apparatus of claim 1, the operations further comprising in response to receiving a beam training reference signal, performing measurements on the beam training reference signal, wherein the measurements comprise reference signal received quality. ### Claim 19 (depends on 1) The apparatus of claim 1, the operations further comprising in response to receiving a beam training reference signal, performing measurements on the beam training reference signal, wherein the measurements are transmitted to a peer medium access control layer in a measurement report. ### Claim 20 (depends on 1) The apparatus of claim 1, wherein the apparatus is a user equipment (UE).