3 gpp wlan qos ppt
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The document discusses 3GPP-WLAN interworking which allows 3GPP service providers to offload data traffic from cellular networks to WLANs. It enables subscribers to access 3GPP services through a WLAN access gateway and packet data gateway. The goal is to provide WLAN access as an integral part of cellular service offerings. It also discusses supporting QoS over the interworked network through policies, IEEE 802.11e, and UMTS QoS parameters and traffic classes.
3 gpp wlan qos ppt
- 1. By– Kewal Sharma Annu Sawaiyan Swapnil Kantale
- 2. The third Generation Partnership Project (3GPP) has initiated to develop a 3GPP- WLAN interworking architecture to allow 3GPP service providers to offload data traffic from wide area wireless spectrum to WLANs in indoor locations, hotspots, and other areas with high user density. 3GPP-WLAN interworking scenario enables the subscriber to access 3GPP PS services through the WLAN access gateway (WAG) and Packet data gateway (PDG). The main driver is to enable 3GPP system operators to provide WLAN access as an integral component of their total service offering to cellular subscriber.
- 4. QoS refers to the ability to deliver network services according to the parameters specified in SLA. At network resource level : ◦ Prioritize traffic ◦ Control bandwidth ◦ Network latency ◦ Delay Management ◦ Packet loss rate Policy based QOS solution is adopted by the 3GPP for ensuring that sufficient QoS resources are provided to the authorized users in the network
- 5. IEEE 802.11e MAC UMTS QoS UMTS QoS Traffic Class UMTS QoS Parameters/Attributes Integrated 3G/WLAN Network with all-IP UMTS
- 6. IEEE 802.11e standard provides QoS features and multimedia support to the existing 802.11b and 802.11a standards, while maintaining full backward compatibility with them. IEEE 802.11e MAC employs a channel access function, called Hybrid Coordination Function (HCF), which includes a contention-based channel access and a contention-free centrally controlled channel access mechanism.
- 8. There are four different UMTS QoS traffic classes: a. conversational class b. streaming class c. interactive class d. background class
- 10. Maximum bit rate (kbps) Guaranteed bit rate (kbps) Delivery order (y/n) Maximum SDU size (octets) SDU format information (bits) SDU error ratio Residual bit error ratio Transfer delay (ms) Traffic handling priority Allocation/Retention Priority