General Overview
The Connection Layer controls the state of the air-link, and itprioritizes the traffic that is sent over it. This section presentsthe default protocols for the Connection Layer. With the exceptionof the Overhead Messages Protocol, each of these protocols can beindependently negotiated at the beginning of the session.
The access terminal and the access network maintain a connectionwhose state dictates the form in which communications between theseentities can take place. The connection can be either closed oropen:
• Closed Connection: When a connection is closed, the accessterminal is not assigned any dedicated air-link resources.Communications between the access terminal and the access networkare conducted over the Access Channel and the Control Channel.
• Open Connection: When a connection is open, the accessterminal can be assigned the Forward Traffic Channel, and isassigned a Reverse Power Control Channel and a Reverse TrafficChannel. Communications between the access terminal and the accessnetwork are conducted over these assigned channels, as well as overthe Control Channel.
The Connection Layer provides the following connection-relatedfunctions:
• Manages initial acquisition of the network.
• Manages opening and closing of connections.
• Manages communications when connection is closed and when aconnection is open.
• Maintains approximate access terminal’s locationin eitherconnection states.
• Manages radio link between the access terminal and the accessnetwork when a connection is open.
• Performs supervision both when the connection is open and whenit is closed.
• Prioritizes and encapsulates transmitted data received fromthe Session Layer and forwards it to the Security Layer.
• De-capsulates data received from the Security Layer andforwards it to the Session Layer.
The Connection Layer performs these functions through thefollowing protocols:
- Edition:
- C
- Published:
- 11/01/2011
- Number of Pages:
- 412
- File Size:
- 1 file , 5.5 MB
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