QoSGuaranteedBitRateDownlink

Validations ASN.1 Parent Types

Describes the bitrate the UMTS bearer service shall guarantee to the user or application in downlink direction. Guaranteed bitrate may be used to facilitate admission control based on available resources, and for resource allocation within UMTS. The Guaranteed bit rate for downlink value is ignored if the Traffic Class is Interactive class or Background class, or Maximum bit rate for downlink is set to 0 kbps.

Derivation: 

UMTS item “Guaranteed bit rate for downlink” (3G 24.008).

Conditionality: 

Mandatory within groups

UMTS Quality Of Service Requested

UMTS Quality Of Service Used

where available from the network.

Values:

The maximum bit rate is encoded in a single hexadecimal octet. By interpreting this hexadecimal octet as an unsigned integer n, the bit rate r  applicable to the PDP context can be calculatd as follows:

                0 < n < 64             n Kbit/s                                  (0 < r < 64)

                64£ n < 128          64 +(n-64)*8 Kbit/s           (64£  r £ 568)

                128£ n < 255       576 +(n-128)*64 Kbit/s    (576£  r £ 8640)

The value n = 0 indicates the subscribed  Maximum Bit Rate (only applicable to UMTS Quality Of Service Requested), all other values are reserved.

QoSGuaranteedBitRateDownlink ::= [APPLICATION 283] OCTET STRING --(SIZE(1))

Parent Types

UMTSQoSInformation
Text extracted from GSMA TD57 standard