# US 10,772,087 B2 · Physical layer signaling techniques in wireless communications systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,772,087 B2 - Document ID: US10772087B2 - Status: Granted - Kind: B2 - Application number: 15/347,382 - Filed: 2016-11-09 - Published: 2017-05-18 - Granted: 2020-09-08 - Earliest claimed: 2015-11-14 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Srinivas Yerramalli; Tao Luo; Peter Gaal - Web page: https://patentgrep.com/patent/US10772087B2 ## CPC - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - 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 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W 28/18: Negotiating wireless communication parameters - H04W 72/044: based on the type of the allocated resource - H04W 72/51: based on terminal or device properties - 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 Techniques are provided that enable signaling of physical layer parameters in a shared radio frequency spectrum band or a dedicated radio frequency spectrum band (or any available radio frequency spectrum band). One or more physical layer channels may be used to transmit physical layer parameters, and different portions of the channel(s) may carry physical layer information for different groups of UEs. A base station may configure a UE into a UE group that monitors particular channel resources based on the UE group. In this manner, a base station may transmit physical layer parameters that may be received by a UE for receiving wireless communications for one or more subframe. A base station may transmit physical layer parameters to be monitored by the use using a physical hybrid automatic repeat request (HARQ) indicator channel (PHICH), a physical control format indicator channel (PCFICH), a physical downlink control channel (PDCCH), or combinations thereof. ## Claims ### Claim 1 A method for wireless communication at a base station, comprising: identifying a first subset of wireless resources of a channel on a contention-based shared radio frequency spectrum band, for signaling first configuration information to a first user equipment (UE) group; identifying a second subset of wireless resources of the channel on the contention-based shared radio frequency spectrum band, for signaling second configuration information to a second UE group, the first configuration information including one or more parameters for the first UE group and the second configuration information including one or more parameters for the second UE group to perform wireless communications using the contention-based shared radio frequency spectrum band; and transmitting the first configuration information to the first UE group using the first subset of wireless resources and the second configuration information to the second UE group using the second subset of wireless resources. ### Claim 2 (depends on 1) The method of claim 1, wherein the channel comprises a physical hybrid automatic repeat request (HARQ) indicator channel (PHICH), a physical control format indicator channel (PCFICH), a physical downlink control channel (PDCCH), or combinations thereof. ### Claim 3 (depends on 2) The method of claim 2, wherein the first configuration information is signaled using the PHICH and the second configuration information is signaled using one or more of the PCFICH or the PDCCH. ### Claim 4 (depends on 1) The method of claim 1, further comprising: configuring a UE to monitor one of the first subset of wireless resources or the second subset of wireless resources. ### Claim 5 (depends on 4) The method of claim 4, wherein configuring the UE further comprises: transmitting radio resource control (RRC) information to the UE indicating which of the first subset of wireless resources or the second subset of wireless resources the UE is to monitor. ### Claim 6 (depends on 1) The method of claim 1, wherein the first configuration information comprises a set of frame format parameters and the second configuration information comprises at least one overlapping parameter with the set of frame format parameters that has a different parameter value. ### Claim 7 (depends on 6) The method of claim 6, wherein the set of frame format parameters comprises one or more of a multimedia broadcast single frequency network (MBSFN) subframe type parameter, a partial subframe information parameter, a downlink/uplink configuration parameter, a downlink transmission burst length parameter, a time duration for uplink transmissions parameter, a time duration for which a UE stops monitoring downlink transmissions parameter, a reference signal power variation parameter, an aperiodic CSI-RS presence parameter or a discovery reference signal (DRS) presence indication and configuration, a system information presence parameter, or a do not monitor subframe parameter. ### Claim 8 (depends on 1) The method of claim 1, wherein the first configuration information comprises a first subset of a set of frame format parameters to be used by UEs of the first UE group, and wherein the second configuration information comprises a second subset of the set of frame format parameters to be used by UEs of the second UE group. ### Claim 9 (depends on 8) The method of claim 8, wherein a mapping of the first subset of the set of frame format parameters and the second subset of the set of frame format parameters is provided to the first UE group and the second UE group via radio resource control (RRC) signaling. ### Claim 10 (depends on 1) The method of claim 1, wherein the transmitting further comprises: block coding the first configuration information and the second configuration information. ### Claim 11 (depends on 1) The method of claim 1, wherein the transmitting further comprises: calculating a first cyclic redundancy check (CRC) for the first configuration information and a second CRC for the second configuration information; and appending the first CRC to the first configuration information and the second CRC to the second configuration information. ### Claim 12 (depends on 11) The method of claim 11, wherein the transmitting further comprises: scrambling the first CRC with a first radio network temporary identifier (RNTI) that is assigned to the first UE group and scrambling the second CRC with a second RNTI that is assigned to the second UE group. ### Claim 13 (depends on 1) The method of claim 1, wherein the first configuration information comprises information for a current subframe and at least one subsequent subframe. ### Claim 14 (depends on 1) The method of claim 1, wherein the first configuration information further comprises a header that indicates a size of the first configuration information. ### Claim 15 (depends on 1) The method of claim 1, wherein the first configuration information further comprises power variation information to indicate a power variation between two or more subframes. ### Claim 16 A method for wireless communication at a user equipment, comprising: receiving configuration information, identified by a subset of a set of wireless resources of a channel on a contention-based shared radio frequency spectrum band, that contains frame format information for one or more subframes, the frame format information comprising one or more parameters for wireless communications using the contention-based shared radio frequency spectrum band; monitoring the subset of the set of wireless resources; and receiving, from a base station, the frame format information identified by the subset of the set of wireless resources. ### Claim 17 (depends on 16) The method of claim 16, wherein the channel comprises a physical hybrid automatic repeat request (HARQ) indicator channel (PHICH), a physical control format indicator channel (PCFICH), a physical downlink control channel (PDCCH), or combinations thereof. ### Claim 18 (depends on 17) The method of claim 17, wherein a first portion of the frame format information is received on the PHICH and a second portion of the frame format information is received on the PCFICH or the PDCCH. ### Claim 19 (depends on 16) The method of claim 16, wherein the configuration information is received via radio resource control (RRC) signaling from the base station. ### Claim 20 (depends on 16) The method of claim 16, wherein the frame format information comprises one or more of a multimedia broadcast single frequency network (MBSFN) subframe type parameter, a partial subframe information parameter, a downlink/uplink configuration parameter, a downlink transmission burst length parameter, a time duration for uplink transmissions parameter, a time duration for which a UE stops monitoring downlink transmissions parameter, a reference signal power variation parameter, an aperiodic CSI-RS presence parameter or a discovery reference signal (DRS) presence indication and configuration, a system information presence parameter, or a do not monitor subframe parameter. ### Claim 21 An apparatus for wireless communication at a base station, comprising: a processor; memory in electronic communication with the processor; and the processor and the memory configured to: identify a first subset of wireless resources of a channel on a contention-based shared radio frequency spectrum for signaling first configuration information to a first user equipment (UE) group; identify a second subset of wireless resources of the channel on the contention-based shared radio frequency spectrum band, for signaling second configuration information to a second UE group, the first configuration information including one or more parameters for the first UE group and the second configuration information including one or more parameters for the second UE group to perform wireless communications using the contention-based shared radio frequency spectrum band; and transmit the first configuration information to the first UE group using the first subset of wireless resources and the second configuration information to the second UE group using the second subset of wireless resources. ### Claim 22 (depends on 21) The apparatus of claim 21, wherein the channel comprises a physical hybrid automatic repeat request (HARQ) indicator channel (PHICH), a physical control format indicator channel (PCFICH), a physical downlink control channel (PDCCH), or combinations thereof. ### Claim 23 (depends on 22) The apparatus of claim 22, wherein the first configuration information is signaled using the PHICH and the second configuration information is signaled using one or more of the PCFICH or the PDCCH. ### Claim 24 (depends on 21) The apparatus of claim 21, wherein the processor and the memory are further configured to: configure a UE to monitor one of the first subset of wireless resources or the second subset of wireless resources. ### Claim 25 (depends on 24) The apparatus of claim 24, where the processor and the memory are further configured to: transmit radio resource control (RRC) information to the UE indicating which of the first subset of wireless resources or the second subset of wireless resources the UE is to monitor. ### Claim 26 (depends on 21) The apparatus of claim 21, wherein the first configuration information comprises a set of frame format parameters and the second configuration information comprises at least one overlapping parameter with the set of frame format parameters that has a different parameter value. ### Claim 27 An apparatus for wireless communication at a user equipment, comprising: a processor; memory in electronic communication with the processor; and the processor and memory configured to: receive configuration information identified by a subset of a set of wireless resources of a channel on a contention-based shared radio frequency spectrum band, that contains frame format information for one or more subframes, the frame format information comprising one or more parameters for wireless communications using the contention-based shared radio frequency spectrum band; monitor the subset of the set of wireless resources; and receive, from a base station, the frame format information identified by the subset of the set of wireless resources. ### Claim 28 (depends on 27) The apparatus of claim 27, wherein the channel comprises a physical hybrid automatic repeat request (HARQ) indicator channel (PHICH), a physical control format indicator channel (PCFICH), a physical downlink control channel (PDCCH), or combinations thereof. ### Claim 29 (depends on 28) The apparatus of claim 28, wherein a first portion of the frame format information is received on the PHICH and a second portion of the frame format information is received on the PCFICH or the PDCCH. ### Claim 30 (depends on 27) The apparatus of claim 27, wherein the configuration information is received via radio resource control (RRC) signaling from the base station.