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US 12,745,195 B2Granted
Device, network, and method for communications with dynamic adaptation
AssigneeFuturewei Technologies, Inc.
InventorsJialing Liu, Weimin Xiao, Qian Cheng
Life of this patent
Estimating the term…
Abstract
An embodiment communication system and method adaptively use a secondary cell under the control of a primary cell for communicating with a user device. The secondary cell and the user device communicate based on instructions provided to both by the primary cell. To reduce interference and minimize power usage, the communications channel for the secondary cell is normally off.
Claims28
A method, comprising:
- receiving, by a user equipment (UE), a radio resource control (RRC) configuration signal configuring one or more secondary cells (SCells);
- receiving, by the UE, a first physical downlink control channel (PDCCH) from a primary cell (PCell) on a primary component carrier, the first PDCCH carrying a first downlink control information (DCI) including a bitmap with one or more bits, the bitmap being associated with at least one SCell of the one or more SCells, the bitmap in the first DCI instructing the UE to start or stop monitoring a second PDCCH associated with the at least one SCell while the at least one SCell is activated for the UE;
- and
- while the at least one SCell is activated for the UE, starting or stopping, by the UE as instructed by the bitmap in the first DCI of the first PDCCH, monitoring the second PDCCH associated with the at least one SCell of the one or more SCells,
- wherein a first bit value in a corresponding bit in the bitmap instructs the UE to start monitoring the second PDCCH, or a second bit value in the corresponding bit in the bitmap instructs the UE to stop monitoring the second PDCCH, the second bit value being different from the first bit value, and
- wherein the monitoring the second PDCCH comprises attempting to detect a DCI format and decode the second PDCCH for the at least one SCell.
3 more elements
A user equipment (UE), comprising:
- at least one processor;
- and
- a non-transitory computer readable storage medium storing programming, the programming including instructions that, when executed by the at least one processor, cause the UE to perform operations including:
- receiving a radio resource control (RRC) configuration signal configuring one or more secondary cells (SCells);
- receiving a first physical downlink control channel (PDCCH) from a primary cell (PCell) on a primary component carrier, the first PDCCH carrying a first downlink control information (DCI) including a bitmap with one or more bits, the bitmap being associated with at least one SCell of the one or more SCells, the bitmap in the first DCI instructing the UE to start or stop monitoring a second PDCCH associated with the at least one SCell while the at least one SCell is activated for the UE;
- and
- while the at least one SCell is activated for the UE, starting or stopping as instructed by the bitmap in the first DCI of the first PDCCH, monitoring the second PDCCH associated with the at least one SCell of the one or more SCells,
- wherein a first bit value in a corresponding bit in the bitmap instructs the UE to start monitoring the second PDCCH, or a second bit value in the corresponding bit in the bitmap instructs the UE to stop monitoring the second PDCCH, the second bit value being different from the first bit value, and
- wherein the monitoring the second PDCCH comprises attempting to detect a DCI format and decode the second PDCCH for the at least one SCell.
6 more elements
A method, comprising:
- transmitting, by one of at least one base station to a user equipment (UE), a radio resource control (RRC) configuration signal configuring one or more secondary cells (SCells), wherein the at least one base station includes a first base station in a primary cell (PCell);
- and
- transmitting, by the first base station to the UE, a first physical downlink control channel (PDCCH) on a primary component carrier, the first PDCCH carrying a first downlink control information (DCI) including a bitmap with one or more bits, the bitmap being associated with at least one SCell of the one or more SCells, the bitmap in the first DCI instructing the UE to start or stop monitoring a second PDCCH associated with the at least one SCell of the one or more SCells while the at least one SCell is activated for the UE,
- wherein a first bit value in a corresponding bit in the bitmap instructs the UE to start monitoring the second PDCCH, or a second bit value in the corresponding bit in the bitmap instructs the UE to stop monitoring the second PDCCH, the second bit value being different from the first bit value, and
- wherein the monitoring the second PDCCH comprises attempting to detect a DCI format and decode the second PDCCH for the at least one SCell.
2 more elements
A system, comprising:
- at least one base station including a first base station, wherein the at least one base station is configured to perform operations comprising:
- transmitting, by one of the at least one base station to a user equipment (UE), a radio resource control (RRC) configuration signal configuring one or more secondary cells (SCells), wherein the first base station is in a primary cell (PCell);
- and
- transmitting, by the first base station to the UE, a first physical downlink control channel (PDCCH) on a primary component carrier, the first PDCCH carrying a first downlink control information (DCI) including a bitmap with one or more bits, the bitmap being associated with at least one SCell of the one or more SCells, the bitmap in the first DCI instructing the UE to start or stop monitoring a second PDCCH associated with the at least one SCell of the one or more SCells while the at least one SCell is activated for the UE,
- wherein a first bit value in a corresponding bit in the bitmap instructs the UE to start monitoring the second PDCCH, or a second bit value in the corresponding bit in the bitmap instructs the UE to stop monitoring the second PDCCH, the second bit value being different from the first bit value, and
- wherein the monitoring the second PDCCH comprises attempting to detect a DCI format and decode the second PDCCH for the at least one SCell.
3 more elements
Dependencies are inferred from the claim text.