# US 10,313,066 B2 · Method for transmitting and receiving data channel and LC device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,313,066 B2 - Document ID: US10313066B2 - Status: Granted - Kind: B2 - Application number: 15/565,895 - Filed: 2016-03-23 - Published: 2018-04-05 - Granted: 2019-06-04 - Earliest claimed: 2015-04-22 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Hyangsun You; Yunjung Yi; Suckchel Yang; Hanbyul Seo - Web page: https://patentgrep.com/patent/US10313066B2 ## CPC - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0069: {Allocation based on distance or geographical location} - H04L 5/0082: {at predetermined intervals} - H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence) - H04W 28/0215: {based on user or device properties, e.g. MTC-capable devices (services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51)} - H04W 48/12: using downlink control channel - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/12: Wireless traffic scheduling - H04W 72/1273: of downlink data flows - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 48/16: Discovering, processing access restriction or access information - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The disclosure of the present specification provides a method for receiving a physical downlink shared channel (PDSCH) on a low-capability (LC) or low-cost (LC) device. The method may comprise the steps of: receiving repetition of a downlink control channel in the case that the LC device is set to coverage enhancement (CE); determining a last subframe where the reception is terminated; and determining a start subframe for receiving the repetition of the PDSCH on the basis of the last subframe. The reception of the PDSCH starts at the k-th effective subframe after subframe n, and the subframe n may be the last subframe where the reception of the downlink control channel is terminated. K is greater than or equal to 2, and the effective subframe may be predetermined. ## Claims ### Claim 1 A method for receiving a physical downlink shared channel (PDSCH), the method performed by a wireless device and comprising: receiving, a by the wireless device configured for a coverage enhancement, downlink control channel, which is repeated over a first plurality of downlink subframes; determining a last subframe among the first plurality of downlink subframes where the downlink control channel is repeated; determining a start subframe to receive repetitions of the PDSCH which is repeated over a second plurality of downlink subframes, based on the last subframe, wherein the reception of the PDSCH starts from a kth valid subframe after a subframe n, where the subframe n is the last subframe, on which the repetition of the downlink control channel is completed, where the k is equal to or greater than 2 and each valid subframe is pre-configured; and considering that any subframe on which a system information block (SIB) is received is not used to receive the PDSCH including downlink data other than the SIB. ### Claim 2 (depends on 1) The method of claim 1, further comprising: dropping the reception of the PDSCH on a subframe on which a SIB is received. ### Claim 3 (depends on 1) The method of claim 1, further comprising: not receiving the PDSCH on a subframe, which is not configured as a valid subframe; or dropping the reception of the PDSCH on the gap subframe, which is not configured as the valid subframe. ### Claim 4 (depends on 1) The method of claim 1, further comprising: receiving a SIB including information on a valid downlink subframe. ### Claim 5 (depends on 1) The method of claim 1, further comprising: counting a total number of downlink subframes including other downlink subframes being not used for the reception. ### Claim 6 A method for transmitting a physical uplink shared channel (PUSCH), the method performed by a wireless device and comprising: receiving, by the wireless device configured for a coverage enhancement, a downlink control channel, which is repeated over a plurality of downlink subframes; determining a last subframe among the plurality of downlink subframes where the downlink control channel is repeated; determining a start subframe to transmit the PUSCH which is repeated over a plurality of uplink subframes, based on the last subframe, wherein the transmission of the PUSCH starts from a kth valid subframe after a subframe n, where the subframe n is the last subframe, on which the repetition of the downlink control channel is completed, and where the k is equal to or greater than 4 and each valid subframe is preconfigured, wherein when a number of the repetitions is N, the N is counted only using valid subframes. ### Claim 7 (depends on 6) The method of claim 6, further comprising: receiving a SIB including information on a valid subframe. ### Claim 8 (depends on 6) The method of claim 6, wherein using values of redundancy version which are cyclically indexed over consecutive subframes including valid subframes as well as invalid subframes. ### Claim 9 A wireless device for receiving a physical downlink shared channel (PDSCH), comprising: a transceiver configured for a coverage enhancement and to receive a downlink control channel, which is repeated over a first plurality of downlink subframes; and a processor configured to: determine a last subframe among the first plurality of downlink subframes where the downlink control channel is repeated, and determine a start subframe to receive the PDSCH which is repeated over a second plurality of downlink subframes, based on the last subframe, wherein the reception of the PDSCH starts from a kth valid subframe after a subframe n, where the subframe n is the last subframe, on which the repetition of the downlink control channel is completed, where the k is equal to or greater than 2 and each valid subframe is pre-configured, and consider that any subframe on which a system information block (SIB) is received is not used to receive the PDSCH including downlink data other than the SIB. ### Claim 10 (depends on 9) The wireless device of claim 9, wherein the processor is further configured to: drop the reception of the PDSCH on a subframe on which a SIB is received. ### Claim 11 (depends on 9) The wireless device of claim 9, wherein the processor is further configured to: not receive the PDSCH on a subframe, which is not configured as a valid subframe; or drop the reception of the PDSCH on the gap subframe, which is not configured as the valid subframe. ### Claim 12 (depends on 9) The wireless device of claim 9, wherein the transceiver is further configured to: receive a SIB including information on a valid downlink subframe. ### Claim 13 (depends on 9) The wireless device of claim 9, wherein in order to receive the repetitions of the downlink control channel, the processor is further configured to: count a total number of downlink subframes including other downlink subframes being not used for the reception. ### Claim 14 A wireless device for transmitting a physical uplink shared channel (PUSCH), comprising: a transceiver configured for a coverage enhancement and to receive repetitions of a downlink control channel, which is repeated over a plurality of downlink subframes; and a processor configured to: determine a last subframe among the plurality of downlink subframes where the downlink control channel is repeated, and determine a start subframe to transmit the PUSCH which is repeated over a plurality of uplink subframes, based on the last subframe, wherein the transmission of the PUSCH starts from a kth valid subframe after a subframe n, where the subframe n is the last subframe, on which the repetition of the downlink control channel is completed, and where the k is equal to or greater than 4 and the each valid subframe is preconfigured, wherein when a number of the repetitions is N, the N is counted only using valid subframes. ### Claim 15 (depends on 14) The wireless device of claim 14, wherein the transceiver is further configured to: receive a SIB including information on a valid subframe. ### Claim 16 (depends on 14) The wireless device of claim 14, wherein the processor is further configured to: use values of redundancy version which are cyclically indexed over consecutive subframes including valid subframes as well as invalid subframes.