Power headroom reporting method and device for wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsSoeng-Hun Kim, Gert Jan Van Lieshout, Kyeong-In Jeong
Life of this patent
Estimating the term…
Abstract
Methods and apparatus are provided for reporting a Power Headroom (PH) of a User Equipment (UE) in a wireless communication system having a plurality of aggregated uplink carriers. A message to activate an uplink carrier is received. A predetermined time is awaited in order to trigger a Power Headroom Report (PHR). The PHR is triggered after the predetermined time has elapsed.
Claims16
A method for reporting a power headroom (PH) of a user equipment (UE) in a wireless communication system supporting carrier aggregation, the method comprising the steps of:
- receiving a configuration message to configure an uplink carrier;
- receiving a control message to activate the uplink carrier;
- determining whether a predetermined time has elapsed after receiving the control message;
- and
- triggering a power headroom report (PHR), prior to receiving an uplink grant, if the predetermined time has elapsed,
- wherein the received uplink grant is associated with the uplink carrier.
A user equipment (UE) device in a wireless communication system supporting carrier aggregation, the UE comprising:
- a transceiver for receiving a configuration message to configure an uplink carrier, and receiving a control message to activate the uplink carrier;
- and
- a controller for determining whether a predetermined time has elapsed after receiving the control message, and triggering a power headroom report (PHR), prior to receiving an uplink grant, if the predetermined time has elapsed,
- wherein the received uplink grant is associated with the uplink carrier.
A method for processing a power headroom (PH) of a base station in a wireless communication system supporting carrier aggregation, the method comprising the steps of:
- transmitting a configuration message to a user equipment (UE) to configure an uplink carrier;
- transmitting a control message to the UE for activating the uplink carrier;
- and
- receiving a power headroom report (PHR) from the UE after a predetermined time period has elapsed,
- wherein the PHR is triggered at the UE prior to reception of an uplink grant and after the predetermined time period has elapsed, and
- wherein the uplink grant is associated with the uplink carrier.
A base station in a wireless communication system supporting carrier aggregation, the base station comprising:
- a transceiver for transmitting and receiving a signal;
- and
- a controller for transmitting a configuration message to a user equipment (UE) to configure an uplink carrier, for transmitting a control message to the UE for activating the uplink carrier, and receiving a power headroom report (PHR) from the UE after a predetermined time period has elapsed,
- wherein the PHR is triggered at the UE prior to reception of an uplink grant and after the predetermined time period has elapsed, and
- wherein the uplink grant is associated with the uplink carrier.
Dependencies are inferred from the claim text.