Admission control for QoS-driven wireless LANs

A point coordinator for a basic service set in a wireless network, the point coordinator comprising:

• a quality of service management entity for receiving a reservation request characterizing a quality of service session, the reservation request containing a quality of service parameter set and requesting a resource of a communication channel in the basic service set for the quality of service session;
• an admission control entity for performing macro bandwidth management for quality of service traffic transport of the quality of service session over a medium access control sublayer for the communication channel, the admission control entity determining whether to grant the reservation request based on the quality of service parameter set;
• and
• a frame schedule entity that provides the quality of service management entity with a channel status information on a superframe basis, the channel status information being related to a contention-free period and a channel bandwidth;
• wherein the quality of service parameter set characterizing a quality of service session contains a priority level;
• and
• wherein the admission control entity admits a session of a discontinuous and bursty flow type to the communication channel of the basic service set when a bandwidth requested for the session of the discontinuous and bursty flow type does not exceed a useable total channel bandwidth minus a bandwidth used for a session of a continuous/periodic flow type, and minus a bandwidth used for a session of the discontinuous and bursty flow type relating to a priority level that is higher than a priority level of the session requesting the bandwidth.

A point coordinator for a basic service set in a wireless network, the point coordinator comprising:

• a quality of service management entity for receiving a reservation request characterizing a quality of service session, the reservation request containing a quality of service parameter set and requesting a resource of a communication channel in the basic service set for the quality of service session;
• and
• an admission control entity for performing macro bandwidth management for quality of service traffic transport of the quality of service session over a medium access control sublayer for the communication channel, the admission control entity determining whether to grant the reservation request based on the quality of service parameter set;
• wherein the quality of service parameter set characterizing the quality of service session contains a mean data rate and a maximum data burst, the mean data rate being related to a token rate of a token bucket and the maximum data burst being related to a bucket size of the token bucket;
• and
• wherein an admission control is based on a bursty behavior of the token bucket.

A method for controlling access to a communication channel in a basic service set in a wireless network, the method comprising:

• receiving a reservation request characterizing a quality of service session, the reservation request containing a quality of service parameter set and requesting a resource of the communication channel in the basic service set for the quality of service session;
• performing macro bandwidth management for quality of service traffic transport of the quality of service session over a medium access control sublayer for the communication channel by determining whether to grant the reservation request based on the quality of service parameter set associated with the quality of service session;
• generating channel status information on a superframe basis, the channel status information being related to a contention-free period and a channel bandwidth;
• and
• admitting a session of a continuous and periodic flow type to the communication channel of the basic service set when a bandwidth requested for the session of the continuous and periodic flow type does not exceed a total useable channel bandwidth minus a bandwidth used for the session of the continuous and periodic flow type.

A method for controlling access to a communication channel in a basic service set in a wireless network, the method comprising:

• receiving a reservation request characterizing a quality of service session, the reservation request containing a quality of service parameter set and requesting a resource of the communication channel in the basic service set for the quality of service session, wherein the quality of service parameter set contains a priority level;
• performing macro bandwidth management for quality of service traffic transport of the quality of service session over a medium access control sublayer for the communication channel by determining whether to grant the reservation request based on the quality of service parameter set associated with the quality of service session;
• generating channel status information on a superframe basis, the channel status information being related to a contention-free period and a channel bandwidth;
• and
• admitting a session of a discontinuous and bursty flow type to the communication channel of the basic service set when a bandwidth requested for the session of the discontinuous and bursty flow type does not exceed a useable total channel bandwidth minus a bandwidth used for a session of a continuous and periodic flow type, and minus a bandwidth used for a session of the discontinuous and bursty flow type relating to a priority level that is higher than a priority level of the session requesting the bandwidth.

A method for controlling access to a communication channel in a basic service set in a wireless network, the method comprising:

• receiving a reservation request characterizing a quality of service session, the reservation request containing a quality of service parameter set and requesting a resource of the communication channel in the basic service set for the quality of service session;
• and
• performing macro bandwidth management for quality of service traffic transport of the quality of service session over a medium access control sublayer for the communication channel by determining whether to grant the reservation request based on the quality of service parameter set associated with the quality of service session;
• wherein the quality of service parameter set characterizing the quality of service session contains a mean data rate and a maximum data burst, the mean data rate being related to a token rate of a token bucket and the maximum data burst being related to a bucket size of the token bucket, and
• wherein an admission control is performed based on a bursty behavior of the token bucket.