# US 2016/0366706 A1 · Method for transmitting response information in mobile communications system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0366706 A1 - Document ID: US20160366706A1 - Status: Published application - Kind: A1 - Application number: 15/246,087 - Filed: 2016-08-24 - Published: 2016-12-15 - Earliest claimed: 2006-02-07 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Young Dae LEE; Sung Duck CHUN; Myung Cheul JUNG; Sung Jun PARK - Web page: https://patentgrep.com/patent/US20160366706A1 ## CPC - H04L 1/1887: {Scheduling and prioritising arrangements} - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04L 1/1825: Adaptation of specific ARQ protocol parameters according to transmission conditions - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 47/18: {End to end} - H04L 47/34: ensuring sequence integrity, e.g. using sequence numbers - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 74/006: {in the downlink, i.e. towards the terminal} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04W 28/26: Resource reservation - H04W 56/0045: {compensating for timing error by altering transmission time} - H04W 72/12: Wireless traffic scheduling - H04W 74/004: {in the uplink, i.e. towards network} - H04W 74/0866: {using a dedicated channel for access} - Y02D 30/70: in wireless communication networks - 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) - 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 A method for transmitting radio resources in a mobile communication system is disclosed. The method includes receiving a random access channel (RACH) preamble from a plurality of UEs and transmitting response information associated with the received preambles over a common channel wherein the plurality UEs can access the common channel and receive corresponding information. If a HARQ scheme is used when a UE transmits data to the eNode-B using uplink radio resources allocated over the RACH, the eNode-B does not pre-allocate uplink radio resources required for re-transmission and performs allocation of radio resources for a first transmission of HARQ. If the re-transmission is required, the eNode-B allocates the radio resources required for the re-transmission with the NACK signal. If re-transmission is not required, the present invention can reduce an amount of wasted radio resources. ## Claims ### Claim 1 A method for a user equipment (UE) to perform a random access in a mobile communication system, the method comprising: transmitting a random access preamble to a network; receiving a medium access control protocol data unit (MAC PDU) comprising random access responses and header parts from the network, each of the header parts corresponding to each of the random access responses; and processing the received MAC PDU comprising the random access responses and the header parts, wherein all of the header parts is in a first part of the MAC PDU and all of the random access responses is in a second part of the MAC PDU subsequent to the first part. ### Claim 2 (depends on 2) The method of claim 2, wherein the MAC PDU is received through a downlink shared channel other than a downlink control channel. ### Claim 3 A method for a user equipment (UE) to perform a random access in a mobile communication system, the method comprising: transmitting a random access preamble to a network; receiving a message comprising multiple random access responses through a downlink shared channel; and processing the received message. ### Claim 4 (depends on 3) The method of claim 3, further comprising: receiving location information of the message through a downlink control channel. ### Claim 5 A method for a network for a random access in a mobile communication system, the method comprising: receiving random access preambles from user equipments (UEs); transmitting a medium access control protocol data unit (MAC PDU) comprising random access responses and header parts from the network, each of the header parts corresponding to each of the random access responses; and wherein all of the header parts is in a first part of the MAC PDU and all of the random access responses is in a second part of the MAC PDU subsequent to the first part. ### Claim 6 (depends on 5) The method of claim 5, wherein the MAC PDU is transmitted through a downlink shared channel other than a downlink control channel. ### Claim 7 A method for a network for a random access in a mobile communication system, the method comprising: receiving random access preambles from a user equipments (UEs); transmitting a message comprising multiple random access responses through a downlink shared channel. ### Claim 8 (depends on 7) The method of claim 7, further comprising: transmitting location information of the message through a downlink control channel. ### Claim 9 A user equipment (UE) performing a random access in a mobile communication system, the UE comprising: a transceiver configured to transmit a random access preamble to a network, and receive a medium access control protocol data unit (MAC PDU) comprising random access responses and header parts from the network, each of the header parts corresponding to each of the random access responses; and a processor configured to process the received MAC PDU comprising the random access responses and the header parts, wherein all of the header parts is in a first part of the MAC PDU and all of the random access responses is in a second part of the MAC PDU subsequent to the first part. ### Claim 10 (depends on 9) The UE of claim 9, wherein the transceiver receives the MAC PDU through a downlink shared channel other than a downlink control channel. ### Claim 11 A user equipment (UE) performing a random access in a mobile communication system, the UE comprising: a transceiver configured to transmit a random access preamble to a network, and receive a message comprising multiple random access responses through a downlink shared channel; and a processor configured to process the received message. ### Claim 12 (depends on 11) The UE of claim 11, wherein the transceiver receives location information of the message through a downlink control channel. ### Claim 13 A network device for a random access in a mobile communication system, the device comprising: a transceiver configured to receive random access preambles from user equipments (UEs), and transmit a medium access control protocol data unit (MAC PDU) comprising random access responses and header parts from the network, each of the header parts corresponding to each of the random access responses; and a processor configured to prepare the MAC PDU, wherein all of the header parts is in a first part of the MAC PDU and all of the random access responses is in a second part of the MAC PDU subsequent to the first part. ### Claim 14 (depends on 13) The device of claim 13, wherein the transceiver transmits the MAC PDU through a downlink shared channel other than a downlink control channel. ### Claim 15 A network device for a random access in a mobile communication system, the device comprising: a transceiver configured to receive random access preambles from a user equipments (UEs), and transmit a message comprising multiple random access responses through a downlink shared channel; and a processor configured to prepare the message. ### Claim 16 (depends on 15) The device of claim 15, wherein the transceiver transmits location information of the message through a downlink control channel.