# US 11,910,372 B2 · Enhanced initial access with multi-beam operations > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,372 B2 - Document ID: US11910372B2 - Status: Granted - Kind: B2 - Application number: 17/305,199 - Filed: 2021-07-01 - Published: 2022-03-24 - Granted: 2024-02-20 - Earliest claimed: 2020-09-18 - Assignees: QUALCOMM Incorporated - Applicants: Qualcomm Incorporated - Inventors: Linhai He; Gavin Bernard Horn; Miguel Griot; Peter Gaal - Web page: https://patentgrep.com/patent/US11910372B2 ## CPC - H04W 48/12: using downlink control channel - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04B 7/06952: {Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping} - H04W 48/16: Discovering, processing access restriction or access information - H04W 56/001: {Synchronization between nodes} - H04W 72/30: Resource management for broadcast services - H04W 16/28: using beam steering - H04W 48/06: based on traffic conditions - H04W 74/006: {in the downlink, i.e. towards the terminal} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract Wireless communication systems and methods related to enhancing initial access for multi-beam operations. A user equipment (UE) selects a synchronization signal block (SSB) that corresponds to a beam and has a reference signal received power (RSRP) above a threshold. The UE receives a system information block (SIB) that includes a plurality of SSB and beam-specific system information pairs. The UE selects beam-specific system information by matching the selected SSB to one of SSBs in the multiple SSB and beam-specific system information pairs. The UE establishes a connection with a base station (BS) using the beam-specific system information. ## Claims ### Claim 1 A method of wireless communication performed by a user equipment (UE), the method comprising: selecting a synchronization signal block (SSB) having a reference signal received power (RSRP) above a threshold, wherein the SSB corresponds to a beam; receiving a system information block (SIB) that includes: first system information associated with a plurality of SSB identifiers (IDs) and a first UE software type; and second system information associated with a second UE software type, the second system information comprising a plurality of pairs including a first pair and a second pair, the first pair indicating a first SSB ID and first beam-specific system information associated with the first SSB ID, the second pair indicating a second SSB ID and second beam-specific system information associated with the second SSB ID; selecting, from the second system information, a beam-specific system information by matching the selected SSB to an SSB ID in the plurality of pairs; and establishing a connection with a base station (BS) using the beam-specific system information. ### Claim 2 (depends on 1) The method of claim 1, wherein the SIB includes an extension field that indicates the second beam-specific system information, the extension field including a table that stores the plurality of pairs. ### Claim 3 (depends on 1) The method of claim 1, wherein the selected beam-specific system information includes access control information. ### Claim 4 (depends on 3) The method of claim 3, wherein the access control information includes an indication that determines whether the BS is accessible to the UE. ### Claim 5 (depends on 3) The method of claim 3, wherein the access control information includes information for accessing the BS. ### Claim 6 (depends on 1) The method of claim 1, wherein the selected beam-specific system information includes random access channel (RACH) information for initiating a RACH procedure. ### Claim 7 (depends on 6) The method of claim 6, wherein the RACH information includes at least one of: a prach-Configurationlndex; a scalingFactorBI; a totalNumberOfRA-Preambles; or a ssb-perRACH-OccasionAndCB-PreamblesPerSSB parameter. ### Claim 8 (depends on 1) The method of claim 1, further comprising: selecting a second SSB, wherein the second SSB corresponds to a second beam; selecting an additional beam-specific system information by matching the selected second SSB to another SSB ID in the plurality of pairs; and establishing a second connection with the BS using the second additional beam-specific system information. ### Claim 9 A user equipment (UE), comprising: a transceiver; and at least one processor in communication with the transceiver, the at least one processor being configured, individually or in any combination, to: receive a system information block (SIB) that includes: first system information associated with a plurality of synchronization signal block identifiers (SSB IDs) and a first UE software type; and second system information associated with a second UE software type, the second system information comprising a plurality of pairs including a first pair and a second pair, the first pair indicating a first SSB ID and first beam-specific system information associated with the first SSB ID, the second pair indicating a second SSB ID and second beam-specific system information associated with the second SSB ID; select a synchronization signal block (SSB) having a reference signal received power (RSRP) above a threshold, wherein the SSB corresponds to a beam; select, from the second system information, a beam-specific system information by matching the selected SSB to one of SSB IDs in the plurality of pairs; and establish a connection with a base station (BS) using the beam-specific system information. ### Claim 10 (depends on 9) The UE of claim 9, wherein the SIB includes an extension field that indicates the second beam-specific system information, the extension field including a table that stores the plurality of pairs. ### Claim 11 (depends on 9) The UE of claim 9, wherein the selected beam-specific system information includes access control information. ### Claim 12 (depends on 11) The UE of claim 11, wherein the access control information includes an indicator that indicates whether the BS is accessible to the UE. ### Claim 13 (depends on 11) The UE of claim 11, wherein the access control information includes information for accessing the BS. ### Claim 14 (depends on 9) The UE of claim 9, wherein the selected beam-specific system information includes random access channel (RACH) information for initiating a RACH procedure. ### Claim 15 (depends on 14) The UE of claim 14, wherein the RACH information includes at least one of: a prach-Configurationlndex; a scalingFactorBI; a totalNumberOfRA-Preambles; or a ssb-perRACH-OccasionAndCB-PreamblesPerSSB parameter. ### Claim 16 (depends on 9) The UE of claim 9, wherein the at least one processor is further configured, individually or in any combination, to: select a second SSB, wherein the second SSB corresponds to a second beam; select an additional beam-specific system information by matching the selected second SSB to another one of SSB IDs in the plurality of pairs; and establish a second connection with the BS using the additional beam-specific system information. ### Claim 17 An apparatus at a user equipment (UE), the apparatus comprising: means for selecting a synchronization signal block (SSB) having a reference signal received power (RSRP) above a threshold, wherein the SSB corresponds to a beam; means for receiving a system information block (SIB) that includes: first system information associated with a plurality of synchronization signal block identifiers (SSB IDs) and a first UE software type; and second system information associated with a second UE software type, the second system information comprising a plurality of pairs including a first pair and a second pair, the first pair indicating a first SSB ID and first beam-specific system information associated with the first SSB ID, the second pair indicating a second SSB ID and second beam-specific system information associated with the second SSB ID; means for selecting, from the second system information, a beam-specific system information by matching the selected SSB to an SSB ID in the plurality of pairs; and means for establishing a connection with a base station (BS) using the beam-specific system information. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the SIB includes an extension field that indicates the second beam-specific system information, the extension field including a table that stores the plurality of pairs. ### Claim 19 (depends on 17) The apparatus of claim 17, wherein the selected beam-specific system information includes access control information. ### Claim 20 (depends on 19) The apparatus of claim 19, wherein the access control information includes an indication that determines whether the BS is accessible to the UE. ### Claim 21 (depends on 19) The apparatus of claim 19, wherein the access control information includes information for accessing the BS. ### Claim 22 (depends on 17) The apparatus of claim 17, wherein the selected beam-specific system information includes random access channel (RACH) information for initiating a RACH procedure. ### Claim 23 (depends on 22) The apparatus of claim 22, wherein the RACH information includes at least one of: a prach-Configurationlndex; a scalingFactorBI; a totalNumberOfRA-Preambles; or a ssb-perRACH-OccasionAndCB-PreamblesPerSSB parameter. ### Claim 24 (depends on 17) The apparatus of claim 17, further comprising: means for selecting a second SSB, wherein the second SSB corresponds to a second beam; means for selecting an additional beam-specific system information by matching the selected second SSB to another SSB ID in the plurality of pairs; and means for establishing a second connection with the BS using the additional beam-specific system information. ### Claim 25 A non-transitory computer-readable medium storing a set of instructions comprising one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: select a synchronization signal block (SSB) having a reference signal received power (RSRP) above a threshold, wherein the SSB corresponds to a beam; receive a system information block (SIB) that includes: first system information associated with a plurality of synchronization signal block identifiers (SSB IDs) and a first UE software type; and second system information associated with a second UE software type, the second system information comprising a plurality of pairs including a first pair and a second pair, the first pair indicating a first SSB ID and first beam-specific system information associated with the first SSB ID, the second pair indicating a second SSB ID and second beam-specific system information associated with the second SSB ID; select, from the second system information, a beam-specific system information by matching the selected SSB to an SSB ID in the plurality of pairs; and establish a connection with a base station (BS) using the beam-specific system information. ### Claim 26 (depends on 25) The non-transitory computer-readable medium of claim 25, wherein the SIB includes an extension field that indicates the second beam-specific system information, the extension field including a table that stores the plurality of pairs. ### Claim 27 (depends on 25) The non-transitory computer-readable medium of claim 25, wherein the selected beam-specific system information includes access control information. ### Claim 28 (depends on 27) The non-transitory computer-readable medium of claim 27, wherein the access control information includes an indication that determines whether the BS is accessible to the UE. ### Claim 29 (depends on 27) The non-transitory computer-readable medium of claim 27, wherein the access control information includes information for accessing the BS. ### Claim 30 (depends on 25) The non-transitory computer-readable medium of claim 25, wherein the selected beam-specific system information includes random access channel (RACH) information for initiating a RACH procedure. ### Claim 31 (depends on 30) The non-transitory computer-readable medium of claim 30, wherein the RACH information includes at least one of: a prach-Configurationlndex; a scalingFactorBI; a totalNumberOfRA-Preambles; or a ssb-perRACH-OccasionAndCB-PreamblesPerSSB parameter. ### Claim 32 (depends on 25) The non-transitory computer-readable medium of claim 25, wherein the one or more instructions, when executed by the one or more processors, further cause the UE to: select a second SSB, wherein the second SSB corresponds to a second beam; select an additional beam-specific system information by matching the selected second SSB to another SSB ID in the plurality of pairs; and establish a second connection with the BS using the additional beam-specific system information.