# US 12,010,708 B2 · System and method for supporting inter-band carrier aggregation with different UL/DL TDD configurations > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,708 B2 - Document ID: US12010708B2 - Status: Granted - Kind: B2 - Application number: 18/184,021 - Filed: 2023-03-15 - Published: 2023-07-13 - Granted: 2024-06-11 - Earliest claimed: 2012-01-27 - Assignees: BlackBerry Limited - Applicants: BlackBerry Limited - Inventors: Yiping Wang; Jun Li; Youn Hyoung Heo - Web page: https://patentgrep.com/patent/US12010708B2 ## CPC - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04J 3/16: in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted (H04J3/17, H04J3/24 take precedence) - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04L 5/1469: {using time-sharing} - H04L 5/22: using time-division multiplexing - H04W 72/04: Wireless resource allocation - 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) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract In some implementations, a method of wireless communications between a wireless communications network and wireless user equipment includes receiving, using a primary Time Division Duplex (TDD) configuration, data on a primary component carrier in a first frequency band. Using a secondary TDD configuration, data on a secondary component carrier is received in a second frequency band different from the first frequency band. A Hybrid Automatic Repeat Request (HARQ) for data received on the secondary component carrier is transmitted using a supplemental TDD configuration. A transmission or retransmission on the secondary component carrier uses a supplemental TDD configuration as well. The supplemental TDD configuration is different from the secondary TDD configuration. Furthermore, an uplink supplemental configuration may be different from a downlink supplemental configuration. ## Claims ### Claim 1 A method of wireless communications between a wireless communications network and wireless user equipment, comprising: receiving, using a primary time division duplex (TDD) configuration, data on a primary component carrier in a first frequency band; receiving, using a secondary TDD configuration, data on a secondary component carrier in a secondary frequency band different from the first frequency band; and transmitting a Hybrid Automatic Repeat Request (HARQ) for data received on the second component carrier using a supplemental TDD configuration, wherein the supplemental TDD configuration is different from the secondary TDD configuration. ### Claim 2 (depends on 1) The method of claim 1, wherein the primary TDD configuration comprises a primary downlink TDD configuration including downlink subframes, the secondary TDD configuration comprises a secondary downlink TDD configuration including downlink subframes, and the supplemental TDD configuration specifies a set of downlink subframes including downlink subframes specified in the primary TDD configuration and the secondary TDD configuration. ### Claim 3 (depends on 1) The method of claim 1, further comprising transmitting an uplink HARQ for uplink data received on the secondary component carrier, using a supplemental uplink TDD configuration, wherein the supplemental uplink TDD configuration specifies a set of uplink subframes including uplink subframes in the primary TDD configuration and the secondary TDD configuration. ### Claim 4 (depends on 3) The method of claim 3, further comprising transmitting, using the supplemental uplink TDD configuration, an uplink grant granting resources for uplink data transmissions on the secondary component carrier. ### Claim 5 (depends on 4) The method of claim 4, further comprising retransmitting an uplink data packet on the secondary component carrier at a modified uplink retransmission subframe different from an uplink retransmission subframe specified by the supplemental TDD configuration. ### Claim 6 (depends on 5) The method of claim 5, wherein the modified uplink retransmission subframe is a subframe preceding the uplink retransmission subframe. ### Claim 7 (depends on 5) The method of claim 5, wherein the modified uplink retransmission subframe is a next available uplink subframe not previously scheduled after the uplink retransmission subframe. ### Claim 8 (depends on 1) The method of claim 1, wherein the supplemental TDD configuration comprises a supplemental downlink TDD configuration or a supplemental uplink TDD configuration. ### Claim 9 (depends on 1) The method of claim 1, further comprising receiving data on tertiary component carrier using a third TDD configuration in a third frequency band different from the first frequency band and the second frequency band, wherein the supplemental TDD configuration comprises an aggregations of the primary TDD configuration and third TDD configuration. ### Claim 10 (depends on 1) The method of claim 1, further comprising in response to not receiving a DL PDCCH to schedule grants, executing at least one of Cross Transmission Time Interval (TTI) scheduling, bundle scheduling, or temporarily disable cross-carrier scheduling. ### Claim 11 A method of wireless communications between a wireless communications network and wireless user equipment, comprising: determining a first transmission direction in a same subframe in a primary component carrier using a primary Time Division Duplex (TDD) configuration, wherein the primary component carrier is in a first frequency band; determining a second transmission direction at the same subframe in a secondary component carrier using a secondary TDD configuration, wherein the second component carrier is in a second frequency band different from the first frequency band; selecting a muted component carrier in the secondary component carrier; and muting transmission and reception on the muted component carrier at the subframe. ### Claim 12 (depends on 11) The method of claim 11, further comprising: transmitting an uplink Hybrid Automatic Repeat Request (HARQ) for uplink data transmitted on the secondary component carrier at transmission times defined in the primary TDD configuration; and receiving a downlink HARQ for downlink data received on the secondary component carrier at transmission times defined in the primary TDD configuration. ### Claim 13 (depends on 12) The method of claim 12, further comprising transmitting an uplink grant granting resources for uplink data transmissions on the secondary component carrier at transmission times defined in the primary TDD configuration. ### Claim 14 (depends on 12) The method of claim 12, further comprising retransmitting an uplink data packet on the secondary component carrier at a modified uplink retransmission subframe different from an uplink retransmission subframe specified by supplemental TDD configuration. ### Claim 15 (depends on 14) The method of claim 14, wherein the modified uplink transmission or retransmission subframe is one subframe prior to an uplink transmission subframe specified by the primary TDD configuration. ### Claim 16 (depends on 14) The method of claim 14, wherein the modified uplink transmission or retransmission subframe is at a next available uplink subframe after an uplink transmission subframe specified by the primary TDD configuration. ### Claim 17 (depends on 11) The method of claim 11, wherein selecting the muted component carrier is periodically executed, and the selection is based, at least in part, on an evaluation of at least one interference condition or traffic condition. ### Claim 18 A method of wireless communication between a wireless communications network and wireless user equipment, comprising: receiving, using a primary time division duplex (TDD) configuration, uplink data on a primary component carrier in a first frequency band; receiving, using a secondary TDD configuration, uplink data on a secondary component carrier in a secondary frequency band different from the first frequency band; and transmitting a grant granting resources for uplink data transmissions on the secondary component carrier using a supplemental TDD configuration, wherein the supplemental TDD configuration is different from the secondary TDD configuration. ### Claim 19 (depends on 18) The method of claim 18, further comprising granting resources for uplink data transmissions on the secondary component carrier at a modified uplink transmission subframe different from an uplink transmission subframe specified by the supplemental TDD configuration. ### Claim 20 (depends on 18) The method of claim 18, further comprising retransmitting an uplink data packet on the secondary component carrier at a modified uplink retransmission subframe different from an uplink retransmission subframe specified by the supplemental TDD configuration.