# US 10,455,589 B2 · Apparatus and method for random access in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,589 B2 - Document ID: US10455589B2 - Status: Granted - Kind: B2 - Application number: 15/572,909 - Filed: 2016-05-13 - Published: 2018-05-17 - Granted: 2019-10-22 - Earliest claimed: 2015-05-15 - Assignees: Samsung Electronics Co., Ltd.; Research & Business Foundation Sungkyunkwan University - Applicants: Samsung Electronics Co., Ltd.; Research & Business Fountdation Sungkyunkwan University - Inventors: Seung-Hoon Park; Min-Young Chung; Jun-Suk Kim; Sunheui Ryoo; Byounghoon Jung - Web page: https://patentgrep.com/patent/US10455589B2 ## CPC - H04W 72/52: based on load - 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 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/542: using measured or perceived quality - H04W 74/004: {in the uplink, i.e. towards network} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a high data transmission rate beyond a 4th generation communication system such as long term evolution (LTE). An operation method of a base station in a wireless communication system according to an embodiment of the present invention comprises the steps of: receiving at least one random access preamble from at least one terminal; and transmitting at least one message including a plurality of random access responses corresponding to the at least one random access preamble. ## Claims ### Claim 1 A method for operating a terminal in a wireless communication system, the method comprising: transmitting a random access preamble selected from a plurality of random access preambles to a base station; receiving at least one message comprising a plurality of multiplexed random access responses corresponding to the selected random access preamble and information on the plurality of multiplexed random access responses; and identifying the plurality of multiplexed random access responses based on the information on the plurality of multiplexed random access responses, wherein the at least one message including uplink data allocation information corresponding to the random access preamble is generated based on a correlation value that is determined for the random access preamble. ### Claim 2 (depends on 1) The method of claim 1, further comprising: selecting one random access response from the identified plurality of multiplexed random access responses; and transmitting a msg3 message through a channel resource corresponding to the selected random access response. ### Claim 3 (depends on 1) The method of claim 1, further comprising: receiving the at least one message through a downlink channel of a channel different from a channel used to transmit the selected random access preamble. ### Claim 4 (depends on 1) The method of claim 1, wherein receiving the at least one message comprises detecting the at least one message included in one frame. ### Claim 5 (depends on 1) The method of claim 1, wherein receiving the at least one message comprises detecting the at least one message included in each of a plurality of frames. ### Claim 6 An apparatus of a base station in a wireless communication system, the apparatus comprising: a transceiver; and at least one processor operably coupled to the transceiver and configured to: receive at least one random access preamble from at least one terminal, generate at least one message comprising a plurality of multiplexed random access responses corresponding to the at least one random access preamble and information on the plurality of multiplexed random access responses for identifying the plurality of multiplexed random access responses, and transmit the at least one message, wherein the at least one processor is further configured to: determine a correlation value for each of the at least one random access preambles, and generate the at least one message including uplink data allocation information corresponding to each of the at least one random access preamble based on the correlation value. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the transceiver is further configured to broadcast system information comprising at least one of a number of allocated channels and a channel identifier for machine-to-machine communication associated with the at least one random access preamble. ### Claim 8 (depends on 6) The apparatus of claim 6, wherein the at least one processor is further configured to determine a number of a plurality of multiplexed random access responses corresponding to each of the at least one random access preamble. ### Claim 9 (depends on 6) The apparatus of claim 6, wherein the at least one processor is further configured to generate the at least one message comprising a plurality of different pieces of the uplink data allocation information corresponding to the at least one random access preamble. ### Claim 10 (depends on 6) The apparatus of claim 6, wherein the at least one processor is further configured to generate one frame including the at least one message. ### Claim 11 (depends on 6) The apparatus of claim 6, wherein the at least one processor is further configured to generate a plurality of different frames including the at least one message. ### Claim 12 (depends on 6) The apparatus of claim 6, wherein the at least one processor is further configured to: determine a received signal strength for each of the at least one random access preamble; and generate the at least one message including the uplink data allocation information corresponding to each of the at least one random access preamble based on the received signal strength. ### Claim 13 (depends on 6) The apparatus of claim 6, wherein the at least one processor is further configured to generate the at least one message based on an amount of resources used by the base station and a service quality of the base station. ### Claim 14 (depends on 6) The apparatus of claim 6, wherein the at least one processor is further configured to transmit the at least one message through at least one downlink channel. ### Claim 15 An apparatus of a terminal in a wireless communication system, the apparatus comprising: a transceiver; and at least one processor operably coupled to the transceiver and configured to: transmit a random access preamble selected from a plurality of random access preambles to a base station, receive at least one message comprising a plurality of multiplexed random access responses corresponding to the selected random access preamble and information on the plurality of multiplexed random access responses, and identify the plurality of multiplexed random access responses based on the information on the plurality of multiplexed random access responses, wherein the at least one message including uplink data allocation information corresponding to the random access preamble is generated based on a correlation value that is determined for the random access preamble. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the at least one processor is further configured to: select one random access response from the identified plurality of multiplexed random access responses, and transmit a msg3 message through a channel resource corresponding to the selected random access response. ### Claim 17 (depends on 15) The apparatus of claim 15, wherein the at least one processor is further configured to receive the at least one message through a downlink channel of a channel different from a channel used to transmit the selected random access preamble. ### Claim 18 (depends on 15) The apparatus of claim 15, wherein the at least one processor is further configured to detect the at least one message included in one frame. ### Claim 19 (depends on 15) The apparatus of claim 15, wherein the at least one processor is further configured to detect the at least one message included in each of a plurality of frames.