Method and apparatus for transmitting a power headroom report of a UE in a wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsSoeng-Hun Kim, Himke Van Der Velde
Life of this patent
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Abstract
A method and an apparatus are provided for transmitting a Power Headroom Report (PHR) to base station by a User Equipment (UE), wherein the UE determines whether a received an uplink resource is a first uplink resource allocated for a new transmission after a Medium Access Control (MAC) reset, and starts a timer for reporting the PHR, if the allocated uplink resource is the first uplink resource allocated for the new transmission after the MAC reset.
Claims20
A method by a user equipment (UE) in a wireless communication system, the method comprising:
- stopping a timer, when a medium access control (MAC) reset is performed;
- identifying whether a first uplink resource for a new transmission is first allocated from a base station (BS) since the MAC reset is performed;
- if the first uplink resource for the new transmission is first allocated since the MAC reset is performed, starting the stopped timer, without transmitting a power headroom report (PHR);
- triggering a PHR if the started timer expires;
- identifying that a second uplink resource for another new transmission is allocated from the base station;
- transmitting, to the base station, the triggered PHR using the second uplink resource;
- and
- starting the expired timer.
A user equipment (UE) in a wireless communication system, the UE comprising:
- a transceiver;
- and
- a controller configured,
- to stop a timer, when a medium access control (MAC) reset is performed,
- to identify whether a first uplink resource for a new transmission is first allocated from a base station (BS) since the MAC reset is performed,
- if the first uplink resource for the new transmission is first allocated since the MAC reset is performed, to start the stopped timer, without transmitting a power headroom report (PHR),
- to trigger a PHR if the started timer expires,
- to identify that a second uplink resource for another new transmission is allocated from the base station,
- to control the transceiver to transmit the triggered PHR using the second uplink resource, and
- to start the expired timer.
A method for a base station (BS) in a wireless communication system, the method comprising:
- after a medium access control (MAC) reset, allocating a first uplink resource for a new transmission, and transmitting, to a user equipment (UE), information related to the first uplink resource for the new transmission;
- and
- receiving, from the user equipment, a power headroom report (PHR), which is triggered after expiration of a timer,
- wherein the timer is stopped if the MAC reset is requested to the user equipment,
- wherein the stopped timer is started without transmitting a PHR if the first uplink resource for the new transmission is first allocated since the MAC reset is performed,
- wherein the expired timer is started after triggering the PHR,
- wherein the triggered PHR is transmitted using a second uplink resource, and
- wherein the second uplink resource allocated for another new transmission from the base station is identified.
A base station (BS) in a wireless communication system, the base station comprising:
- a transceiver;
- and
- a controller configured,
- after a medium access control (MAC) reset, to allocate a first uplink resource for a new transmission, and
- to control the transceiver to transmit, to the user equipment, information related to the first uplink resource for the new transmission, and to receive, from the user equipment, a power headroom report (PHR), which is triggered after expiration of a timer,
- wherein the timer is stopped if the MAC reset is requested to the user equipment,
- wherein the stopped timer is started without transmitting a PHR if the first uplink resource for the new transmission is first allocated since the MAC reset is performed,
- wherein the expired timer is started after triggering the PHR,
- wherein the triggered PHR is transmitted using a second uplink resource, and
- wherein the second uplink resource allocated for another new transmission from the base station is identified.
Dependencies are inferred from the claim text.