# US 2014/0192700 A1 · Apparatus for transmitting and receiving data in a wireless communication system and method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192700 A1 - Document ID: US20140192700A1 - Status: Published application - Kind: A1 - Application number: 14/203,027 - Filed: 2014-03-10 - Published: 2014-07-10 - Earliest claimed: 2009-06-22 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Moon Il LEE; Seung Hee HAN; Jae Hoon CHUNG; Hyun Soo KO; Bin Chul IHM - Web page: https://patentgrep.com/patent/US20140192700A1 ## CPC - H04W 72/30: Resource management for broadcast services - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04W 28/06: Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} - 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 An apparatus for transmitting and receiving data in a wireless communication system method thereof are disclosed. In a terminal of a wireless communication system, the present invention includes receiving a physical downlink control channel (hereinafter abbreviated PDCCH), receiving a physical downlink shared channel (hereinafter abbreviated PDSCH), and demodulating the PDSCH by interpreting the PDCCH according to a type of a subframe including the PDCCH and the PDSCH. ## Claims ### Claim 1 A method of receiving, by a user equipment, data in wireless communication system, the method comprising: receiving, by the user equipment, a physical downlink control channel (PDCCH) carrying downlink control information format 1A in a subframe; and receiving, by the user equipment, a physical downlink shared channel (PDSCH) corresponding to the PDCCH in the subframe, wherein: the PDSCH is received using a single antenna transmission scheme or transmission diversity scheme, which is based on a cell specific reference signal (CRS), when the subframe is a non-multimedia broadcast multicast service single frequency network (non-MBSFN) subframe, the PDSCH is received using a single layer transmission scheme, which is based on a user equipment specific reference signal, when the subframe is a MBSFN subframe. ### Claim 2 (depends on 1) The method of claim 1, wherein the PDSCH is demodulated using the CRS when the subframe is a non-MBSFN subframe. ### Claim 3 (depends on 1) The method of claim 1, wherein the PDSCH is demodulated using the user equipment specific reference signal when the subframe is a MBSFN subframe. ### Claim 4 A user equipment for receiving data in wireless communication system, the method comprising: a receiving module configured to receive a physical downlink control channel (PDCCH) carrying downlink control information format 1A in a subframe and receive a physical downlink shared channel (PDSCH) corresponding to the PDCCH in the subframe; and a processor configured to process a signal received from the receiving module, wherein: the PDSCH is received using a single antenna transmission scheme or transmission diversity scheme, which is based on a cell specific reference signal (CRS), when the subframe is a non-multimedia broadcast multicast service single frequency network (non-MBSFN) subframe, the PDSCH is received using a single layer transmission scheme, which is based on a user equipment specific reference signal, when the subframe is a MBSFN subframe. ### Claim 5 (depends on 4) The user equipment of claim 4, wherein the PDSCH is demodulated using the CRS when the subframe is a non-MBSFN subframe. ### Claim 6 (depends on 4) The user equipment of claim 4, wherein the PDSCH is demodulated using the user equipment specific reference signal when the subframe is a MBSFN subframe. ### Claim 7 A method of transmitting, by a base station, data in wireless communication system, the method comprising transmitting a physical downlink control channel (PDCCH) carrying downlink control information format 1A to a user equipment in a subframe; and transmitting a physical downlink shared channel (PDSCH) corresponding to the PDCCH to the user equipment in the subframe, wherein: the PDSCH is transmitted using a single antenna transmission scheme or transmission diversity scheme, which is based on a cell specific reference signal (CRS), when the subframe is a non-multimedia broadcast multicast service single frequency network (non-MBSFN) subframe, the PDSCH is transmitted using a single layer transmission scheme, which is based on a user equipment specific reference signal, when the subframe is a MBSFN subframe. ### Claim 8 (depends on 7) The method of claim 7, wherein the CRS is transmitted for demodulation of the PDSCH when the subframe is a non-MBSFN subframe. ### Claim 9 (depends on 7) The method of claim 7, wherein the user equipment specific reference signal is transmitted for demodulation of the PDSCH when the subframe is a MBSFN subframe. ### Claim 10 A base station for transmitting data in wireless communication system, the method comprising a transmitting module configured to transmit a physical downlink control channel (PDCCH) carrying downlink control information format 1A to a user equipment in a subframe and transmit a physical downlink shared channel (PDSCH) corresponding to the PDCCH to the user equipment in the subframe, wherein: the PDSCH is transmitted using a single antenna transmission scheme or transmission diversity scheme, which is based on a cell specific reference signal (CRS), when the subframe is a non-multimedia broadcast multicast service single frequency network (non-MBSFN) subframe, the PDSCH is transmitted using a single layer transmission scheme, which is based on a user equipment specific reference signal, when the subframe is a MBSFN subframe. ### Claim 11 (depends on 10) The base station of claim 10, wherein the CRS is transmitted for demodulation of the PDSCH when the subframe is a non-MBSFN subframe. ### Claim 12 (depends on 10) The base station of claim 10, wherein the user equipment specific reference signal is transmitted for demodulation of the PDSCH when the subframe is a MBSFN subframe.