What is the term for the sector of the cell tower that the signal hits, which helps route 911 calls?

The term that describes the sector of the cell tower that the signal hits, which facilitates the routing of 911 calls, is the angle of arrival. This term refers to the specific direction from which a signal is received by the cell tower. Each tower has multiple sectors, and the angle of arrival helps determine which sector is being accessed by a mobile device.

Understanding the angle of arrival is crucial in emergency situations, as it aids dispatchers in pinpointing the location of the caller more accurately based on which cell tower and sector the call is connected to. This functionality is vital for ensuring timely responses to emergencies, as it allows for precise routing of calls to the appropriate emergency services based on the caller's location.

This term is distinct from other terms in the context of 911 call routing. For example, beam direction typically refers to the orientation of the antenna used for transmitting signals, while signal radius may denote the coverage area of a tower. Caller location usually implies an established system for determining the geographical position of the caller but does not specifically pertain to how the signal is received by the tower.