# US 11,115,852 B2 · Methods and apparatus related to enhanced machine type communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,115,852 B2 - Document ID: US11115852B2 - Status: Granted - Kind: B2 - Application number: 16/716,082 - Filed: 2019-12-16 - Published: 2020-07-02 - Granted: 2021-09-07 - Earliest claimed: 2017-09-20 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Chih-Hao Liu; Srinivas Yerramalli; Tamer Kadous - Web page: https://patentgrep.com/patent/US11115852B2 ## CPC - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0057: {Physical resource allocation for CQI} - H04L 5/0073: {Allocation arrangements that take into account other cell interferences} - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04L 5/0085: {when channel conditions change} - H04W 48/16: Discovering, processing access restriction or access information - 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 Various features related to eMTC-U deployment are described. In an aspect of the disclosure, an apparatus (e.g., a base station) maybe configured to select a subset of non-anchor channels from a set of available non-anchor channels, where the subset of non-anchor channels may correspond to a bandwidth within an unlicensed band. The apparatus maybe further configured to transmit information indicating the subset of non-anchor channels via an anchor channel. In some configurations, the subset of non-anchor channels maybe selected based on channel measurements performed by the base station or a UE. In one aspect, a UE may receive, from a base station via an anchor channel, information indicating a subset of non-anchor channels selected from a set of available non-anchor channels. The UE may transmit data on one or more non-anchor channel of the subset of non-anchor channels. ## Claims ### Claim 1 A method of wireless communication at a user equipment (UE), comprising: receiving, from a base station via an anchor channel, information within at least one of a master information block or a system information block, the information indicating a subset of non-anchor channels selected from a set of available non-anchor channels having a bandwidth within an unlicensed frequency band, wherein the information indicating the subset of non-anchor channels identifies a set of channel groups from a plurality of channel groups, the subset of non-anchor channels corresponding to channels in the set of channel groups; and transmitting data on at least one non-anchor channel of the subset of non-anchor channels. ### Claim 2 (depends on 1) The method of claim 1, wherein the UE transmits the data using frequency hopping on multiple non-anchor channels of the subset of non-anchor channels indicated by the base station. ### Claim 3 (depends on 1) The method of claim 1, wherein the subset of non-anchor channels comprises a subset of frequency hopping channels selected by the base station from a set of available frequency hopping channels. ### Claim 4 (depends on 1) The method of claim 1, wherein the plurality of channel groups includes 15 channel groups and the set of channel groups includes 4 channel groups. ### Claim 5 (depends on 1) The method of claim 1, wherein the set of channel groups is indicated in the master information block using 11 bits. ### Claim 6 (depends on 1) The method of claim 1, further comprising: transmitting one or more channel quality reports indicating channel quality of one or more non-anchor channels of the set of available non-anchor channels. ### Claim 7 (depends on 1) The method of claim 1, wherein the subset of non-anchor channels indicated in the received information is selected from the set of available non-anchor channels based on channel measurements. ### Claim 8 (depends on 1) The method of claim 1, wherein the information indicating the subset of non-anchor channels indicates a starting position of a first group in a set of contiguous channel groups, the subset of non-anchor channels corresponding to channels in the set of contiguous channel groups. ### Claim 9 (depends on 8) The method of claim 8, wherein the set of contiguous channel groups includes 4 contiguous channel groups. ### Claim 10 (depends on 1) The method of claim 1, wherein the subset of non-anchor channels includes 16 contiguous non-anchor channels, and wherein the information indicating the subset of non-anchor channels indicates a starting position of a first non-anchor channel of the 16 contiguous non-anchor channels. ### Claim 11 (depends on 1) The method of claim 1, wherein each channel group includes a same number of contiguous non-anchor channels of the set of available non-anchor channels. ### Claim 12 An apparatus for wireless communication, comprising: a memory; and at least one processor coupled to the memory, the memory and the at least one processor being configured to: receive, from a base station via an anchor channel, information within at least one of a master information block or a system information block, the information indicating a subset of non-anchor channels selected from a set of available non-anchor channels having a bandwidth within an unlicensed frequency band, wherein the information indicating the subset of non-anchor channels identifies a set of channel groups from a plurality of channel groups, the subset of non-anchor channels corresponding to channels in the set of channel groups; and transmit data on at least one non-anchor channel of the subset of non-anchor channels. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the memory and at least one processor are configured to transmit the data using frequency hopping on multiple non-anchor channels of the subset of non-anchor channels indicated by the base station. ### Claim 14 (depends on 12) The apparatus of claim 12, wherein the subset of non-anchor channels comprises a subset of frequency hopping channels selected by the base station from a set of available frequency hopping channels. ### Claim 15 A method of wireless communication at a base station, comprising: selecting a subset of non-anchor channels from a set of available non-anchor channels, wherein the subset of non-anchor channels corresponds to a bandwidth within an unlicensed frequency band; forming a plurality of channel groups; and transmitting information within at least one of a master information block or a system information block on an anchor channel, the information indicating a set of channel groups of the plurality of channel groups, wherein the subset of non-anchor channels corresponds to channels in the set of channel groups. ### Claim 16 (depends on 15) The method of claim 15, further comprising: communicating with a user equipment (UE) using frequency hopping on multiple non-anchor channels of the subset of non-anchor channels indicated by the base station. ### Claim 17 (depends on 15) The method of claim 15, wherein the subset of non-anchor channels comprises a subset of frequency hopping channels selected by the base station from a set of available frequency hopping channels. ### Claim 18 (depends on 15) The method of claim 15, wherein the subset of non-anchor channels is selected from the set of available non-anchor channels based on channel measurements performed by the base station. ### Claim 19 (depends on 15) The method of claim 15, wherein the subset of non-anchor channels is selected from the set of available non-anchor channels based on channel measurements performed by a user equipment (UE), the channel measurements performed by the UE being indicated in one or more channel quality reports from the UE, the method further comprising: receiving the one or more channel quality reports from the UE. ### Claim 20 (depends on 15) The method of claim 15, wherein the plurality of channel groups includes 15 channel groups and the set of channel groups includes 4 channel groups. ### Claim 21 (depends on 15) The method of claim 15, wherein the set of channel groups is indicated in the master information block using 11 bits. ### Claim 22 (depends on 15) The method of claim 15, wherein the set of channel groups includes 4 contiguous channel groups, and wherein the information indicating the subset of non-anchor channels indicates a starting position of a first group in the 4 contiguous channel groups. ### Claim 23 (depends on 15) The method of claim 15, wherein the subset of non-anchor channels includes 16 contiguous non-anchor channels, and wherein the information indicating the subset of non-anchor channels indicates a starting position of a first non-anchor channel of the 16 contiguous non-anchor channels. ### Claim 24 (depends on 15) The method of claim 15, further comprising: grouping the plurality of channel groups into a second set of groups of contiguous channel groups, wherein the subset of non-anchor channels is selected based on selecting a single channel group from each of the groups of contiguous channel groups in the second set of groups. ### Claim 25 (depends on 15) The method of claim 15, wherein each channel group includes a same number of contiguous non-anchor channels of the set of available non-anchor channels. ### Claim 26 An apparatus for wireless communication at a base station, comprising: a memory; and at least one processor coupled to the memory, the memory and the at least one processor being configured to: select a subset of non-anchor channels from a set of available non-anchor channels, wherein the subset of non-anchor channels corresponds to a bandwidth within an unlicensed frequency band; form a plurality of channel groups; and transmit information within at least one of a master information block or a system information block on an anchor channel, the information indicating a set of channel groups of the plurality of channel groups, wherein the subset of non-anchor channels corresponds to channels in the set of channel groups. ### Claim 27 (depends on 26) The apparatus of claim 26, wherein the memory at the at least one processor are further configured to: communicate with a user equipment (UE) using frequency hopping on multiple non-anchor channels of the subset of non-anchor channels indicated by the base station. ### Claim 28 (depends on 26) The apparatus of claim 26, wherein the subset of non-anchor channels comprises a subset of frequency hopping channels selected by the base station from a set of available frequency hopping channels.