Scheduling Request on a Secondary Cell of a Wireless Device

摘要

A plurality of cells comprise a primary cell with no configured scheduling request (SR) resources and a secondary cell with configured SR resources. A wireless device receives an activation command indicating activation of the secondary cell. The wireless device initiates a random access procedure when in a subframe: an SR process is pending; no uplink data channel resources are available for transmission; and a time alignment timer of an sTAG comprising the secondary cell is not running.

主权项

1. A method comprising:
receiving, by a wireless device, at least one message comprising configuration parameters of a plurality of cells, the plurality of cells comprising:
a primary cell with no configured scheduling request (SR) resources; anda secondary cell with configured SR resources, the secondary cell being in a secondary timing advance group (sTAG); receiving an activation command indicating activation of the secondary cell; and initiating a random access procedure when in a subframe:
an SR process is pending;no uplink data channel resources are available for transmission; anda time alignment timer of the sTAG is not running.