# US 10,484,971 B2 · Method and device for transmitting/receiving data using transport block size defined for machine type communication terminal in wireless access system supporting 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 10,484,971 B2 - Document ID: US10484971B2 - Status: Granted - Kind: B2 - Application number: 15/572,474 - Filed: 2016-05-04 - Published: 2018-04-26 - Granted: 2019-11-19 - Earliest claimed: 2015-05-08 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Bonghoe Kim; Yunjung Yi - Web page: https://patentgrep.com/patent/US10484971B2 ## CPC - H04W 72/04: Wireless resource allocation - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - H04W 28/02: Traffic management, e.g. flow control or congestion control - H04W 52/02: Power saving arrangements - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 88/02: Terminal devices - 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} - Y02D 30/70: in wireless communication networks - 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) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract The present invention relates to a wireless access system supporting machine type communication (MTC), and to various methods for an MTC terminal transmitting/receiving data. A method for an MTC terminal receiving data in a wireless access system supporting MTC, as one embodiment of the present invention, may comprise the steps of: receiving a modulation and coding scheme (MCS) index indicating a MCS, and a physical resource block (PRB) index indicating the size of a PRB allocated to a MTC terminal; checking a transport block size (TBS) index that is mapped with the MCS index and deriving a TBS on the basis of the TBS index and the PRB index; and on the basis of the TBS, decoding a physical downlink shared channel (PDSCH) in order to receive data. Here, the size of the MCS index is configured to be a 4-bit size, and the TBS index may be configured so as to support only from 0 to 9 for the MTC terminal. ## Claims ### Claim 1 A method for receiving data by a machine type communication (MTC) user equipment (UE) in a wireless access system supporting an MTC, the method comprising: receiving a higher layer signal comprising information on a set of repetition numbers for the data, wherein the set of repetition numbers is related to a coverage enhance (CE) level of the MTC UE; receiving modulation and coding scheme (MCS) information on an MCS index and resource allocation information for the MTC UE; obtaining a transmission block size (TBS) based on a TBS index and the resource allocation information, wherein the TBS index is obtained based on the MCS index, wherein the TBS index is within a predetermined range, wherein the predetermined range is configured to a part of TBS indexes, from 0 to 9, included in a TBS table, and wherein the TBS table is configured to support a legacy UE; and receiving the data repeatedly based on the set of repetition numbers and the TBS. ### Claim 2 (depends on 1) The method of claim 1, wherein the TBS is obtained based on the TBS index, the resource allocation information and a repetition number of the set of repetition numbers. ### Claim 3 (depends on 1) The method of claim 1, wherein the MCS information is configured to have a 4-bit size. ### Claim 4 A machine type communication (MTC) user equipment (UE) for receiving data in a wireless access system supporting an MTC, the MTC UE comprising: a memory; and, at least one processor coupled with the memory and configured to: receive a higher layer signal comprising information on a set of repetition numbers for the data, wherein the set of repetition numbers is related to a coverage enhance (CE) level of the MTC UE; receive modulation and coding scheme (MCS) information on an MCS index and resource allocation information for the MTC UE; and obtain a transmission block size (TBS) based on a TBS index and the resource allocation information, wherein the TBS index is obtained based on the MCS index, wherein the TBS index is within a predetermined range, wherein the predetermined range is configured to a part of TBS indexes, from 0 to 9, included in a TBS table, and wherein the TBS table is configured to support a legacy UE; and receive the data repeatedly based on the set of repetition numbers and the TBS. ### Claim 5 (depends on 4) The MTC UE of claim 4, wherein the TBS is obtained based on the TBS index, the resource allocation information and a repetition number of the set of repetition numbers. ### Claim 6 (depends on 4) The MTC UE according of claim 4, wherein the MCS information is configured to have a 4-bit size. ### Claim 7 A method for transmitting data by a base station in a wireless access system supporting a machine type communication (MTC), the method comprising: transmitting, to an MTC user equipment (MTC UE), a higher layer signal comprising information on a set of repetition numbers for the data, wherein the set of repetition numbers is related to a coverage enhance (CE) level of the MTC UE; transmitting, to the MTC UE, modulation and coding scheme (MCS) information on an MCS index and resource allocation information for the MTC UE; and transmitting, to the MTC UE, the data repeatedly based on the set of repetition numbers and a transmission block size (TBS), wherein the TBS is obtained based on a TBS index and the resource allocation information, wherein the TBS index is obtained based on the MCS index, wherein the TBS index is within a predetermined range, wherein the predetermined range is configured to a part of TBS indexes, from 0 to 9, included in a TBS table, and wherein the TBS table is configured to support a legacy UE. ### Claim 8 (depends on 7) The method of claim 7, wherein the TBS is obtained based on the TBS index, the resource allocation information and a repetition number of the set of repetition numbers. ### Claim 9 (depends on 7) The method of claim 7, wherein the MCS information is configured to have a 4-bit size. ### Claim 10 A base station for transmitting data in a wireless access system supporting a machine type communication (MTC), the base station comprising: a memory; and, at least one processor coupled with the memory and configured to: transmit, to an MTC user equipment (MTC UE), a higher layer signal comprising information on a set of repetition numbers for the data, wherein the set of repetition numbers is related to a coverage enhance (CE) level of the MTC UE; transmit, to the MTC UE, modulation and coding scheme (MCS) information on an MCS index and resource allocation information for the MTC UE; and transmit, to the MTC UE, the data repeatedly based on the set of repetition numbers and a transmission block size (TBS), wherein the TBS is obtained based on a TBS index and the resource allocation information, wherein the TBS index is obtained based on the MCS index, wherein the TBS index is within a predetermined range, wherein the predetermined range is configured to a part of TBS indexes, from 0 to 9, included in a TBS table, and wherein the TBS table is configured to support a legacy UE. ### Claim 11 (depends on 10) The base station of claim 10, wherein the TBS is obtained based on the TBS index, the resource allocation information and a repetition number of the set of repetition numbers. ### Claim 12 (depends on 10) The base station of claim 10, wherein the MCS information is configured to have a 4-bit size.