# US 10,484,986 B2 · Methods of two-stage scheduling in downlink control channel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,484,986 B2 - Document ID: US10484986B2 - Status: Granted - Kind: B2 - Application number: 16/247,570 - Filed: 2019-01-15 - Published: 2019-05-16 - Granted: 2019-11-19 - Earliest claimed: 2016-09-23 - Assignees: Mediatek Inc. - Applicants: Mediatek Inc. - Inventors: Pei-Kai Liao; Yi-Ju Liao - Web page: https://patentgrep.com/patent/US10484986B2 ## CPC - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/0028: {Formatting} - H04L 1/0038: {Blind format detection (for detection of modulation format H04L27/0012)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 72/121: for groups of terminals or users - H04L 1/0039: {other detection of signalling, e.g. detection of TFCI explicit signalling (H04L1/0046, H04L27/0012 and H04L25/0262 take precedence)} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method of two-stage scheduling in downlink control channel is proposed to enhance downlink control information (DCI) forward compatibility and hardware flexibility. The DCI comprises a basic DCI and an extended DCI. The basic DCI provides basic scheduling information of the scheduled data. The extended DCI provides extended scheduling information of the scheduled data channel. The basic DCI can be unicast to a single UE over UE-specific search space. The basic DCI can also be broadcast or multicast to a group of UEs over common search space. UE performs blind detection of the basic DCI only, while the location and size of the extended DCI can be provided by the basic DCI or provided by a higher layer signaling. Cross-slot/subframe and Multi-slot/subframe scheduling can also be applied in the two-stage scheduling. ## Claims ### Claim 1 A method comprising: monitoring a basic downlink control information (DCI) over a physical layer signaling from a base station by a user equipment (UE) in a mobile communication network; decoding the basic DCI having a predefined basic DCI size using blind detection, wherein the basic DCI carries basic scheduling information; monitoring an extended DCI over the physical layer signaling; and decoding the extended DCI, wherein the extended DCI carries extended scheduling information. ### Claim 2 (depends on 1) The method of claim 1, wherein the basic scheduling information comprises at least one of a resource allocation type and resource allocation information for scheduled data, and wherein the extended scheduling information comprises at least one of a modulation order, a code rate, a multi-antenna scheme, a pilot configuration, and assistance information for interference cancellation for the scheduled data. ### Claim 3 (depends on 1) The method of claim 1, wherein the UE monitors the basic DCI via a unicast signaling over a UE-specific search space. ### Claim 4 (depends on 1) The method of claim 1, wherein the UE monitors the basic DCI via a broadcast or multicast signaling over a common search space using a group scheduling identification. ### Claim 5 (depends on 4) The method of claim 4, wherein the UE receives a higher layer signaling for obtaining the group scheduling identification. ### Claim 6 (depends on 1) The method of claim 1, wherein the UE receives a higher layer signaling for determining an extended DCI size of the extended DCI. ### Claim 7 (depends on 1) The method of claim 1, wherein the basic DCI and the extended DCI are located inside a Physical Downlink Control Channel (PDCCH) region. ### Claim 8 (depends on 1) The method of claim 1, wherein the basic DCI is located inside a Physical Downlink Control Channel (PDCCH) region, and wherein the extended DCI is located inside a Physical Downlink Shared Channel (PDSCH) region. ### Claim 9 A user equipment (UE), comprising: a receiver that receives a basic downlink control information (DCI) over a physical layer signaling from a base station in a mobile communication network, wherein the receiver also receives an extended DCI over the physical layer signaling; and a decoder that decodes the basic DCI having a predefined basic DCI size using blind detection, wherein the basic DCI carries basic scheduling information, wherein the decoder also decodes the extended DCI, and wherein the extended DCI carries extended scheduling information for the scheduled data. ### Claim 10 (depends on 9) The UE of claim 9, wherein the basic scheduling information comprises at least one of a resource allocation type and resource allocation information for scheduled data, and wherein the extended scheduling information comprises at least one of a modulation order, a code rate, a multi-antenna scheme, a pilot configuration, and assistance information for interference cancellation. ### Claim 11 (depends on 9) The UE of claim 9, wherein the UE monitors the basic DCI via a unicast signaling over a UE-specific search space. ### Claim 12 (depends on 9) The UE of claim 9, wherein the UE monitors the basic DCI via a broadcast or multicast signaling over a common search space using a group scheduling identification. ### Claim 13 (depends on 12) The UE of claim 12, wherein the UE receives a higher layer signaling for obtaining the group scheduling identification. ### Claim 14 (depends on 9) The UE of claim 9, wherein the UE receives a higher layer signaling for determining an extended DCI size of the extended DCI. ### Claim 15 (depends on 9) The UE of claim 9, wherein the basic DCI and the extended DCI are located inside a Physical Downlink Control Channel (PDCCH) region. ### Claim 16 (depends on 9) The UE of claim 9, wherein the basic DCI is located inside a Physical Downlink Control Channel (PDCCH) region, and wherein the extended DCI is located inside a Physical Downlink Shared Channel (PDSCH) region. ### Claim 17 A method comprising: transmitting a higher layer signaling from a base station to a user equipment (UE) in a mobile communication network; transmitting a basic downlink control information (DCI) over a physical layer signaling, wherein the basic DCI comprises at least one of a resource allocation type and resource allocation information for scheduled data; and transmitting an extended DCI over the physical layer signaling, wherein the extended DCI comprises at least one of a modulation order, a code rate, a multi-antenna scheme, a pilot configuration, and assistance information for interference cancellation. ### Claim 18 (depends on 17) The method of claim 17, wherein the base station transmits the basic DCI via a unicast signaling over a UE-specific search space. ### Claim 19 (depends on 17) The method of claim 17, wherein the base station transmits the basic DCI via a multicast or broadcast signaling over a common search space using a group scheduling identification. ### Claim 20 (depends on 19) The method of claim 19, wherein the higher layer signaling provides the group scheduling identification. ### Claim 21 (depends on 17) The method of claim 17, wherein the higher layer signaling configures the UE to apply cross-slot/subframe scheduling for the basic DCI. ### Claim 22 (depends on 17) The method of claim 17, wherein the higher layer signaling configures the UE to apply multi-slot/subframe scheduling for the basic DCI.