Patent ID: 9295077
Filing Date: 2016-03-22
CPC Classification: H04W

Claim Text:
1. A method of a User Equipment (UE), the method comprising: connecting to multiple serving cells; triggering a Buffer Status Report (BSR) due to expiry of a periodic buffer status reporting timer; triggering a Scheduling Request (SR) due to the triggering of the BSR; transmitting the SR on a Physical Uplink Control Channel (PUCCH) of a second serving cell, and transmitting a Medium Access Control (MAC) control element corresponding to the BSR in a first serving cell; wherein the first serving cell is selected based on where an uplink grant is received if the connected serving cells are controlled by a same evolved Node B (eNB), and wherein multiple periodic buffer status reporting timers are used to trigger the BSR and the first serving cell corresponds to the expired periodic buffer status reporting timer if the connected serving cells are controlled by different eNBs, and wherein a mapping between the multiple periodic buffer status reporting timers and the connected serving cells is configured according to information provided by network, and each of the multiple periodic buffer status reporting timers corresponds to one or a group of the connected serving cells, and wherein the MAC control element includes status of buffered data which can be transmitted in the first serving cell and does not include status of buffered data which cannot be transmitted in the first serving cell, and wherein the second serving cell is selected based on the trigger of the BSR, and a PUCCH resource for the SR is configured in more than one of the connected serving cells of the UE.