US Patent No. 10,057,887

METHOD AND DEVICE FOR TRIGGERING BUFFER STATE REPORTING BSR


Patent No. 10,057,887
Issue Date August 21, 2018
Title Method And Device For Triggering Buffer State Reporting Bsr
Inventorship Yali Zhao, Beijing (CN)
Erlin Zeng, Beijing (CN)
Assignee China Academy of Telecommunications Technology, Beijing (CN)

Claim of US Patent No. 10,057,887

1. A method for triggering a Buffer Status Reporting (BSR), the method comprising:determining, by a user equipment, the size of padding resources when the user equipment composes a D2N MAC PDU, wherein the D2N MAC PDU is a device to network media access control protocol data unit; and
deciding, by the user equipment, whether to trigger a D2D padding BSR, according to the size of the padding resources, and the priority of D2D padding BSR MAC CE, wherein the D2D padding BSR MAC CE is a media access control layer control element for carrying a device to device communication padding buffer status reporting, and the D2D padding BSR is a device to device communication padding buffer status reporting;
wherein determining the size of the padding resources comprises:
subtracting resources from uplink resources of the user equipment in a sub-frame where the D2N MAC PDU is located, wherein the resources include:
resources occupied by an D2N MAC CE other than D2N MAC CE for carrying a D2N padding BSR, wherein the occupied resources comprise resources occupied by a first MAC sub-header and a first payload;
resources occupied by logical channel data over a D2N link other than an Uplink Common Control Channel (UL-CCCH), wherein the occupied resources comprise resources occupied by a second MAC sub-header and a second payload; and
resources occupied by an D2D MAC CE other than D2D MAC CE for carrying a D2D padding BSR, wherein the occupied resources comprise resources occupied by a third MAC sub-header and a third payload.