Patent ID: 9642125
Date: 2017-05-02
CPC Classifications: H04L,H04W

Claim:
1. A method of transmitting and receiving data by a user equipment in a wireless communication system, comprising: receiving, by the user equipment, an indication message from a base station through a higher layer, the indication message indicating that uplink resource allocation information is transmitted via a physical downlink shared channel (PDSCH); receiving, by the user equipment, first downlink resource allocation information from the base station via a physical downlink control channel (PDCCH), the first downlink resource allocation information including a flag indicating whether the first downlink resource allocation information is used as an uplink grant or a downlink grant; receiving, by the user equipment, the uplink resource allocation information from the base station via the PDSCH scheduled by the first downlink resource allocation information based on the indication message, when the flag included in the first downlink resource allocation information indicates that the first downlink resource allocation information is used as the uplink grant and transmitting, by the user equipment, uplink data to the base station via a physical uplink shared channel (PUSCH) scheduled by the uplink resource allocation information; and receiving, by the user equipment, downlink data from the base station via the PDSCH scheduled by the first downlink resource allocation information, when the flag included in the first downlink resource allocation information indicates that the first downlink resource allocation information is used as the downlink grant.