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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sung-Min Oh Jae-Hyun Kim |
| Copyright Year | 2012 |
| Description | Author affiliation: ETRI(Electronics and Telecommunications Research Institute), Korea (Sung-Min Oh) || School of Electrical and Computer Engineering, Ajou University, Korea (Jae-Hyun Kim) |
| Abstract | To improve the user-perceived quality of service (QoS) performance of voice over Internet protocol (VoIP) services, a retransmission of a packet experienced an error is needed in broadband wireless access networks. This means that the number of wireless resources to successfully transmit a packet can be increased by the retransmitted packet. For this reason, there can be a trade-off between the QoS performance improvement and the wireless resource efficiency enhancement with respect to the maximum number of retransmissions. This paper has formulated the cross-layer optimization problem to maximize the wireless resource efficiency with a constraint of the user-perceived QoS performance. This paper has driven the R-value for the user-perceived QoS performance because it includes most of impairments that can be generated during transmitting a voice frame from mouth to ears. Due to this feature, we can directly assess the QoS performance of VoIP services from a viewpoint of users. In addition, we can clearly design the optimal maximum number of retransmissions that can provide the satisfied quality of a VoIP service. By the numerical results, the optimal maximum number of retransmissions to provide the fair quality of a VoIP service under given conditions for G.711, G.729 and G.723.1 are 1, 3 and 4, respectively. |
| Starting Page | 122 |
| Ending Page | 131 |
| File Size | 279852 |
| Page Count | 10 |
| File Format | |
| ISBN | 9781467301503 |
| ISSN | 17389445 |
| e-ISBN | 9788955191639 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-02-19 |
| Publisher Place | Korea (South) |
| Access Restriction | Subscribed |
| Rights Holder | GIRI |
| Subject Keyword | Quality of service Delay Wireless communication Automatic repeat request Optimization Speech codecs Performance analysis VoIP services Cross-layer optimization user-perceived QoS performance truncated ARQ |
| Content Type | Text |
| Resource Type | Article |
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