| 摘要 |
<p>A wireless device transmits a message to a server via a base station over a first plurality of subcarriers of a first uplink carrier. There is no guard band between any two subcarriers in the first plurality of subcarriers. The wireless device receives an activation command from a base station. The wireless device transmits data packets to the server via the base station over the first uplink carrier and at least one additional uplink carrier over a third plurality of subcarriers. There is at least one guard band between at least two subcarriers in the third plurality of subcarriers.</p> |
