# US 2020/0288507 A1 · Random Access Method, Terminal Device, and Network Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288507 A1 - Document ID: US20200288507A1 - Status: Published application - Kind: A1 - Application number: 16/875,134 - Filed: 2020-05-15 - Published: 2020-09-10 - Earliest claimed: 2017-11-17 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Junren Chang; Zhenzhen Cao; Bingzhao Li; Haibo Xu; Xuelong Wang - Web page: https://patentgrep.com/patent/US20200288507A1 ## CPC - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 5/0092: {Indication of how the channel is divided} - H04W 56/001: {Synchronization between nodes} - H04W 72/1273: of downlink data flows - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 74/0838: using contention-free random access [CFRA] - 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) ## Abstract A method includes: performing, by a terminal device, data transmission based on a configuration parameter of a currently activated first bandwidth part BWP, where the configuration parameter of the first BWP includes at least one of a first resource offset, a first bandwidth, and a first subcarrier spacing; determining, by the terminal device, a first random access resource and a second configuration parameter for random access, where the second configuration parameter includes at least one of a second resource offset, a second bandwidth, and a second subcarrier spacing; sending, by the terminal device, a random access request to the network device on the first random access resource; and receiving, by the terminal device, a random access response based on the second configuration parameter, where the random access response is sent by the network device based on the random access request. ## Claims ### Claim at position 1 -22. (canceled) ### Claim 23 A method, comprising: performing, by a terminal device, data transmission according to a configuration parameter of a currently activated first bandwidth part (BWP), wherein the configuration parameter of the currently activated first BWP comprises a first resource offset, a first bandwidth, or a first subcarrier spacing; determining, by the terminal device, a first random access resource and a second configuration parameter for random access, wherein the second configuration parameter comprises a second resource offset, a second bandwidth, or a second subcarrier spacing; sending, by the terminal device, a random access request to a network device on the first random access resource; and receiving, by the terminal device, a random access response according to the second configuration parameter, wherein the random access response is sent by the network device according to the random access request. ### Claim 24 (depends on 23) The method according to claim 23, wherein receiving, by the terminal device, the random access response according to the second configuration parameter comprises: determining, by the terminal device, first scheduling information according to the second configuration parameter, wherein the first scheduling information indicates a first resource; and receiving, by the terminal device on the first resource, the random access response from the network device. ### Claim 25 (depends on 23) The method according to claim 23, wherein the method further comprises: sending, by the terminal device, a random access message to the network device according to the random access response. ### Claim 26 (depends on 25) The method according to claim 25, wherein sending, by the terminal device, the random access message to the network device according to the random access response comprises: parsing, by the terminal device according to the second configuration parameter, second scheduling information carried in the random access response, wherein the second scheduling information indicates a second resource; and sending, by the terminal device, the random access message to the network device on the second resource. ### Claim 27 (depends on 23) The method according to claim 23, wherein: the first random access resource and the second configuration parameter are associated with the currently activated first BWP; the first random access resource and the second configuration parameter are associated with a second BWP; the first random access resource is a cell-specific random access resource, and the cell-specific random access resource is associated with the second configuration parameter; or the first random access resource and the second configuration parameter are associated with a cell-defining synchronization signal block (SSB). ### Claim 28 (depends on 27) The method according to claim 27, wherein: information about the first random access resource or information about the second configuration parameter is carried in a system broadcast message. ### Claim 29 (depends on 28) The method according to claim 28, wherein a radio resource control (RRC) reconfiguration message or the system broadcast message carries a configuration parameter of the second BWP, and the configuration parameter of the second BWP comprises the second configuration parameter. ### Claim 30 (depends on 23) The method according to claim 23, the method further comprises: in response to the terminal device receiving indication information for deactivating the currently activated first BWP, stopping, by the terminal device, a random access procedure, or determining, by the terminal device, that the random access procedure fails. ### Claim 31 A device, comprising: a processor; and a non-transitory memory, wherein the non-transitory memory stores an execution instruction; and when the processor executes the execution instruction to enable the device to: perform data transmission according to a configuration parameter of a currently activated first bandwidth part (BWP), wherein the configuration parameter of the currently activated first BWP comprises a first resource offset, a first bandwidth, or a first subcarrier spacing; determine a first random access resource and a second configuration parameter for random access, wherein the second configuration parameter comprises a second resource offset, a second bandwidth, or a second subcarrier spacing; send a random access request to a network device on the first random access resource; and receive a random access response according to the second configuration parameter, wherein the random access response is sent by the network device according to the random access request. ### Claim 32 (depends on 31) The device according to claim 31, wherein receiving the random access response comprises: determining first scheduling information according to the second configuration parameter, wherein the first scheduling information indicates a first resource; and receiving on the first resource the random access response sent by the network device. ### Claim 33 (depends on 31) The device according to claim 31, when the processor executes the execution instruction to enable the device to further: send a random access message to the network device according to the random access response. ### Claim 34 (depends on 33) The device according to claim 33, wherein sending the random access message comprises: parsing according to the second configuration parameter, second scheduling information carried in the random access response, wherein the second scheduling information indicates a second resource; and sending the random access message to the network device on the second resource. ### Claim 35 (depends on 31) The device according to claim 31, wherein: the first random access resource and the second configuration parameter are associated with the currently activated first BWP; the first random access resource and the second configuration parameter are associated with a second BWP; the first random access resource is a cell-specific random access resource, and the cell-specific random access resource is associated with the second configuration parameter; or the first random access resource and the second configuration parameter are associated with a cell-defining synchronization signal block (SSB). ### Claim 36 (depends on 35) The device according to claim 35, wherein: information about the first random access resource or information about the second configuration parameter is carried in a system broadcast message. ### Claim 37 (depends on 36) The device according to claim 36, wherein a radio resource control (RRC) reconfiguration message or the system broadcast message carries a configuration parameter of the second BWP, and the configuration parameter of the second BWP comprises the second configuration parameter. ### Claim 38 (depends on 31) The device according to claim 31, when the processor executes the execution instruction to enable the device to further: in response to the device receiving indication information for deactivating the first BWP, stop a random access procedure or determine that the random access procedure fails. ### Claim 39 A non-transitory computer-readable storage medium having processor-executable instructions stored thereon, wherein the processor-executable instructions, when executed, facilitate: performing data transmission according to a configuration parameter of a currently activated first bandwidth part (BWP), wherein the configuration parameter of the first BWP comprises a first resource offset, a first bandwidth, or a first subcarrier spacing; determining a first random access resource and a second configuration parameter for random access, wherein the second configuration parameter comprises a second resource offset, a second bandwidth, or a second subcarrier spacing; sending a random access request to a network device on the first random access resource; and receiving a random access response according to the second configuration parameter, wherein the random access response is sent by the network device according to the random access request. ### Claim 40 (depends on 39) The non-transitory computer-readable storage medium according to claim 39, when the program is executed by a processor, further facilitate: sending a random access message to the network device according to the random access response. ### Claim 41 (depends on 40) The non-transitory computer-readable storage medium according to claim 40, wherein receiving the random access response comprises: determining first scheduling information according to the second configuration parameter, wherein the first scheduling information indicates a first resource; and receiving, on the first resource, the random access response sent by the network device. ### Claim 42 (depends on 40) The non-transitory computer-readable storage medium according to claim 40, wherein sending the random access message comprises: parsing according to the second configuration parameter, second scheduling information carried in the random access response, wherein the second scheduling information indicates a second resource; and sending the random access message to the network device on the second resource. ### Claim 43 (depends on 39) The non-transitory computer-readable storage medium according to claim 39, wherein: the first random access resource and the second configuration parameter are associated with the currently activated first BWP; the first random access resource and the second configuration parameter are associated with a second BWP; the first random access resource is a cell-specific random access resource, and the cell-specific random access resource is associated with the second configuration parameter; or the first random access resource and the second configuration parameter are associated with a cell-defining synchronization signal block (SSB). ### Claim 44 (depends on 43) The non-transitory computer-readable storage medium according to claim 43, wherein: information about the first random access resource or information about the second configuration parameter is carried in a system broadcast message.