# US 12,764,799 B2 · Communication method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,764,799 B2 - Document ID: US12764799B2 - Status: Granted - Kind: B2 - Application number: 18/012,499 - Filed: 2020-07-10 - Published: 2023-08-10 - Granted: 2026-10-13 - Earliest claimed: 2020-07-10 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Qin Mu - Web page: https://patentgrep.com/patent/US12764799B2 ## CPC - H04W 74/0891: {for synchronized access} - 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 In order to better meet access requirements of wireless user equipment (UEs) such as a reduced capability UE or NR-lite, a communication method in a wireless communication network includes receiving random access configuration information, wherein the random access configuration information comprises configuration information of at least one set of random access resources; and determining at least one of random access resources and transmission parameters associated with random access according to the random access configuration information. The random access configuration information may be received according to state information such as capability or channel state information. ## Claims ### Claim 1 A communication method, performed by a reduced capability user equipment (RedCap UE), comprising: receiving random access configuration information, wherein the random access configuration information comprises configuration information of at least one set of random access resources; and determining at least one of random access resources and transmission parameters associated with random access according to the random access configuration information, wherein receiving random access configuration information comprises: receiving the random access configuration information according to first state information of the RedCap UE, wherein the first state information comprises channel state information, wherein the channel state information comprises a synchronization signal block, SSB-based reference signal received power (Rsrp), wherein the random access configuration information comprises configuration information of two or more sets of random access resources. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first state information comprises capability information. ### Claim 3 (depends on 1) The method according to claim 1, wherein determining at least one of random access resources and transmission parameters associated with random access according to the random access configuration information comprises: determining, according to second state information of the RedCap UE, configuration information corresponding to the second state information in the configuration information of the at least one set of random access resources. ### Claim 4 (depends on 3) The method according to claim 3, wherein the second state information comprises: capability information; and channel state information. ### Claim 5 (depends on 2) The method according to claim 2, wherein the capability information comprises at least one of: a device type; a corresponding receiving bandwidth; a corresponding transmission bandwidth; a number of receiving antennas; or a number of transmitting antennas. ### Claim 6 (depends on 1) The method according to claim 1, wherein the configuration information of each set of random access resources comprises a channel parameter threshold of channel state information. ### Claim 7 (depends on 6) The method according to claim 6, wherein the channel parameter threshold comprises at least one of an upper threshold and a lower threshold. ### Claim 8 (depends on 1) The method according to claim 1, wherein at least one configuration parameter in the configuration information of each set of random access resources is configured differently. ### Claim 9 (depends on 8) The method according to claim 8, wherein the configuration parameter comprises: a random access channel generic configuration; a physical random access channel configuration index; at least one of configuration parameters associated with at least one of random access time domain resource and frequency domain resource configurations; a configuration parameter associated with a random access preamble; and a random access response window width. ### Claim 10 (depends on 9) The method according to claim 9, wherein the configuration parameter associated with the random access preamble comprises at least one of: a random access preamble configuration parameter; a random access preamble maximum transmission number; a random access preamble transmission power; or a random access preamble transmission power ramping step. ### Claim 11 A communication method, performed by a base station, comprising: sending random access configuration information, wherein the random access configuration information comprises configuration information of at least one set of random access resources, wherein the random access configuration information comprises configuration information of at least one set of random access resources corresponding to at least one type of state information of a reduced capability user equipment (RedCap UE), wherein the state information of the RedCap UE comprises channel state information corresponding to the RedCap UE, wherein the channel state information comprises a synchronization signal block, SSB-based reference signal received power (Rsrp), the random access configuration information comprises configuration information of at least two sets of supported random access resources. ### Claim 12 (depends on 11) The method according to claim 11, wherein the state information of the RedCap UE comprises capability information of the RedCap UE. ### Claim 13 (depends on 12) The method according to claim 12, wherein the capability information of the RedCap UE comprises at least one of: a device type; a corresponding receiving bandwidth; a corresponding transmission bandwidth; a number of receiving antennas; or data of transmitting antennas. ### Claim 14 A reduced capability user equipment (RedCap UE), comprising: a communication module configured to receive random access configuration information, wherein the random access configuration information comprises configurations corresponding to at least one set of random access resources; and a processing module configured to determine at least one of random access resources and transmission parameters associated with random access according to the random access configuration information, wherein the communication module is further configured to: receive the random access configuration information according to first state information of the RedCap UE, wherein the first state information comprises channel state information, wherein the channel state information comprises a synchronization signal block, SSB-based reference signal received power (Rsrp), wherein the random access configuration information comprises configuration information of two or more sets of random access resources.