Method of transmitting power headroom reporting in wireless communication system
First Claim
Patent Images
1. A method of providing a power headroom reporting (PHR) in wireless communications system, the method comprising:
- determining whether a user equipment (UE) has allocated uplink (UL) resources for a new transmission for a current transmission time interval (TTI);
determining whether at least one PHR is to be triggered,wherein the PHR is triggered by a configuration or reconfiguration of the PHR functionality by upper layers, which is not used to disable the PHR functionality;
determining whether the allocated UL resources can accommodate a PHR medium access control (MAC) control element (CE) as a result of logical channel prioritization;
if it is determined that the at least one PHR is to be triggered, the UE has the allocated UL resources for the new transmission for the current TTL, and the allocated UL resources can accommodate the PHR MAC CE as the result of logical channel prioritization, generating and transmitting the PHR MAC control element based on a power headroom value obtained from a physical layer;
if it is determined that the allocated UL resources cannot accommodate the PHR MAC CE as the result of logical channel prioritization, determining whether the UE has the allocated UL resources for the new transmission for a next TTI;
generating and transmitting the PHR MAC control element based on the power headroom value obtained from the physical layer if it is determined that the UE has the allocated UL resources for the new transmission for the next TTI; and
starting a periodic PHR timer after transmitting the PHR MAC control element.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is related to a method of effectively transmitting a power headroom report (PHR) from the terminal to the base station in an evolved universal mobile telecommunications system (E-UMTS) evolved from universal mobile telecommunications system (UMTS) or a long term evolution (LTE) system, and more particularly, to a method of providing the power headroom report after determinations of whether the power headroom reporting is triggered and whether allocated uplink resource(s) accommodate a medium access control (MAC) control element.
53 Citations
12 Claims
-
1. A method of providing a power headroom reporting (PHR) in wireless communications system, the method comprising:
-
determining whether a user equipment (UE) has allocated uplink (UL) resources for a new transmission for a current transmission time interval (TTI); determining whether at least one PHR is to be triggered, wherein the PHR is triggered by a configuration or reconfiguration of the PHR functionality by upper layers, which is not used to disable the PHR functionality; determining whether the allocated UL resources can accommodate a PHR medium access control (MAC) control element (CE) as a result of logical channel prioritization; if it is determined that the at least one PHR is to be triggered, the UE has the allocated UL resources for the new transmission for the current TTL, and the allocated UL resources can accommodate the PHR MAC CE as the result of logical channel prioritization, generating and transmitting the PHR MAC control element based on a power headroom value obtained from a physical layer; if it is determined that the allocated UL resources cannot accommodate the PHR MAC CE as the result of logical channel prioritization, determining whether the UE has the allocated UL resources for the new transmission for a next TTI; generating and transmitting the PHR MAC control element based on the power headroom value obtained from the physical layer if it is determined that the UE has the allocated UL resources for the new transmission for the next TTI; and starting a periodic PHR timer after transmitting the PHR MAC control element. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A user equipment (UE) configured for providing a power headroom reporting (PHR) in wireless communications system, the UE comprising:
-
a processor configured to; determine whether a user equipment (UE) has allocated uplink (UL) resources for a new transmission for a current transmission time interval (TTI); determine whether at least one PHR is to be triggered, wherein the PHR is triggered by a configuration or reconfiguration of the PHR functionality by upper layers, which is not used to disable the PHR functionality; determine whether the allocated uplink (UL) resources can accommodate a PHR medium access control (MAC) control element (CE) as a result of logical channel prioritization; if it is determined that the at least one PHR is to be triggered, the UE has the allocated UL resources for the new transmission for the current TTL, and the allocated UL resources can accommodate the PHR MAC CE as the result of logical channel prioritization, generate and transmit the PHR MAC control element based on a-a power headroom value obtained from a physical layer; if it is determined that the allocated UL resources cannot accommodate the PHR MAC CE as the result of logical channel prioritization, determine whether the UE has the allocated UL resources for the new transmission for a next TTI; generate and transmit the PHR MAC control element based on the power headroom value obtained from the physical layer if it is determined that the UE has the allocated UL resources for the new transmission for the next TTI; and start a periodic PHR timer after transmitting the PHR MAC control element. - View Dependent Claims (8, 9, 10, 11, 12)
-
Specification