# US 11,122,520 B2 · Coverage enhancements for physical broadcast channel (PBCH) > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,122,520 B2 - Document ID: US11122520B2 - Status: Granted - Kind: B2 - Application number: 14/489,146 - Filed: 2014-09-17 - Published: 2015-03-19 - Granted: 2021-09-14 - Earliest claimed: 2013-09-18 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Hao Xu; Wanshi Chen; Tingfang Ji - Web page: https://patentgrep.com/patent/US11122520B2 ## CPC - H04W 52/241: {taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 52/16: Deriving transmission power values from another channel - H04W 52/322: {Power control of broadcast channels} - H04W 74/08: Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04L 5/0023: {Time-frequency-space} - H04L 5/0039: {Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another} - H04W 52/143: {Downlink power control} - H04W 74/006: {in the downlink, i.e. towards the terminal} - 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 Certain aspects of the present disclosure generally relate to wireless communications, and more specifically, coverage enhancements for physical broadcast channel (PBCH). According to certain aspects, a method is provided for wireless communications by a user equipment (UE). The method generally includes receiving a physical downlink shared channel (PDSCH) transmission, receiving a different type downlink transmission, with transmit power boosted relative to the PDSCH transmission, receiving information regarding relative transmit power of the PDSCH transmission relative to a common reference signal (CRS) based on the transmit power of the different type downlink transmission, and processing the PDSCH transmission based on the information. ## Claims ### Claim 1 A method for wireless communications by a base station (BS), comprising: transmitting a bundled simplified system information block (SIB), to a user equipment (UE), that indicates a bundled physical random access channel (PRACH) configuration; receiving, in accordance with the bundled PRACH configuration, a bundled RACH transmission from the UE indicating a request for bundled broadcast information; and triggering a transmission of bundled broadcast information in response to the request indicated by the bundled RACH transmission. ### Claim 2 (depends on 1) The method of claim 1, wherein the transmission of the bundled broadcast information comprises transmission of bundled SIB2 and above in response to the request indicated by the bundled RACH transmission. ### Claim 3 (depends on 2) The method of claim 2, wherein the transmission of the bundled broadcast information further comprises transmission of a bundled physical broadcast channel (PBCH) in response to the request indicated by the bundled RACH transmission. ### Claim 4 (depends on 2) The method of claim 2, wherein the transmission of the bundled broadcast information further comprises transmission of a bundled SIB1 in response to the request indicated by the bundled RACH transmission. ### Claim 5 (depends on 1) The method of claim 1, wherein triggering the transmission of the bundled broadcast information, in response to the request indicated by the bundled RACH transmission, comprises: opportunistically triggering the transmission of the bundled broadcast information based on the receiving of the bundled RACH transmission. ### Claim 6 An apparatus for wireless communications, comprising: at least one processor; and memory coupled with the at least one processor, the memory comprising code executable by the at least one processor to cause the apparatus to: transmit a bundled simplified system information block (SIB), to a user equipment (UE), that indicates a bundled physical random access channel (PRACH) configuration; receive, in accordance with the bundled PRACH configuration, a bundled RACH transmission from the UE indicating a request for bundled broadcast information; and trigger a transmission of bundled broadcast information in response to the request indicated by the bundled RACH transmission. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the transmission of the bundled broadcast information comprises transmission of bundled SIB2 and above in response to the request indicated by the bundled RACH transmission. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the transmission of the bundled broadcast information further comprises transmission of a bundled physical broadcast channel (PBCH) in response to the request indicated by the bundled RACH transmission. ### Claim 9 (depends on 7) The apparatus of claim 7, wherein the transmission of the bundled broadcast information further comprises transmission of a bundled SIB1 in response to the request indicated by the bundled RACH transmission. ### Claim 10 (depends on 6) The apparatus of claim 6, wherein the code executable by the at least one processor to cause the apparatus to trigger the transmission of the bundled broadcast information, in response to the request indicated by the bundled RACH transmission, comprises: code executable by the at least one processor to cause the apparatus to opportunistically trigger the transmission of the bundled broadcast information based on the receiving of the bundled RACH transmission. ### Claim 11 A method for wireless communications by a user equipment (UE), comprising: receiving a bundled simplified system information block (SIB) or a SIB1 transmission that indicates a bundled physical random access channel (PRACH) configuration; performing a bundled RACH transmission in accordance with the bundled PRACH configuration, the bundled RACH transmission indicating a request for bundled broadcast information; and receiving a transmission of bundled broadcast information in response to the request for bundled broadcast information indicated by the bundled RACH transmission. ### Claim 12 (depends on 11) The method of claim 11, wherein the transmission of the bundled broadcast information comprises transmission of bundled SIB2 and above in response to the request indicated by the bundled RACH transmission. ### Claim 13 (depends on 12) The method of claim 12, wherein the transmission of the bundled broadcast information further comprises transmission of a bundled physical broadcast channel (PBCH) in response to the request indicated by the bundled RACH transmission. ### Claim 14 (depends on 11) The method of claim 11, wherein indicating the request for the bundled broadcast information, comprises: opportunistically triggering the transmission of the bundled broadcast information based on the receiving of the bundled RACH transmission. ### Claim 15 An apparatus for wireless communications by a user equipment (UE), comprising: at least one processor; and memory coupled with the at least one processor, the memory comprising code executable by the at least one processor to cause the apparatus to: receive a bundled simplified system information block (SIB) transmission that indicates a bundled physical random access channel (PRACH) configuration; perform a bundled RACH transmission in accordance with the bundled PRACH configuration, the bundled RACH transmission indicating a request for bundled broadcast information; and receive a transmission of bundled broadcast information in response to the request for bundled broadcast information indicated by the bundled RACH transmission. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the transmission of the bundled broadcast information comprises transmission of bundled SIB2 and above in response to the request indicated by the bundled RACH transmission. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the transmission of the bundled broadcast information further comprises transmission of a bundled physical broadcast channel (PBCH) in response to the request indicated by the bundled RACH transmission. ### Claim 18 (depends on 15) The apparatus of claim 15, wherein the code executable by the at least one processor to cause the apparatus to indicate the request for the bundled broadcast information comprises: code executable by the at least one processor to cause the apparatus to opportunistically trigger the transmission of the bundled broadcast information based on the receiving of the bundled RACH transmission. ### Claim 19 An apparatus for wireless communications, comprising: means for transmitting a bundled simplified system information block (SIB) transmission, to a user equipment (UE), that indicates a bundled physical random access channel (PRACH) configuration; means for receiving, in accordance with the bundled PRACH configuration, a bundled RACH transmission from the UE indicating a request for bundled broadcast information; and means for triggering a transmission of bundled broadcast information in response to the request indicated by the bundled RACH transmission. ### Claim 20 A non-transitory computer readable medium storing computer executable code thereon for wireless communications, comprising: code for transmitting a bundled simplified system information block (SIB) transmission, to a user equipment (UE), that indicates a bundled physical random access channel (PRACH) configuration; code for receiving, in accordance with the bundled PRACH configuration, a bundled RACH transmission from the UE indicating a request for bundled broadcast information; and code for triggering a transmission of bundled broadcast information in response to the request indicated by the bundled RACH transmission. ### Claim 21 An apparatus for wireless communications, comprising: means for receiving a bundled simplified system information block (SIB) transmission that indicates a bundled physical random access channel (PRACH) configuration; means for performing a bundled RACH transmission in accordance with the bundled PRACH configuration, the bundled RACH transmission indicating a request for bundled broadcast information; and means for receiving a transmission of bundled broadcast information in response to the request for bundled broadcast information indicated by the bundled RACH transmission. ### Claim 22 A non-transitory computer readable medium storing computer executable code thereon for wireless communications, comprising: code for receiving a simplified system information block (SIB) transmission that indicates a bundled physical random access channel (PRACH) configuration; code for performing a bundled RACH transmission in accordance with the bundled PRACH configuration, the bundled RACH transmission indicating a request for bundled broadcast information; and code for receiving a transmission of bundled broadcast information in response to the request for bundled broadcast information indicated by the bundled RACH transmission.