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| Content Provider | Springer Nature Link |
|---|---|
| Author | Kang, Kyungtae Cho, Yongwoo Shin, Heonshik |
| Copyright Year | 2007 |
| Abstract | The cdma2000 1xEV-DO mobile communication system provides broadcast and multicast services (BCMCS) to meet an increasing demand for multimedia data services. But the servicing of video streams over a BCMCS network faces a challenge from the unreliable and error-prone nature of the radio channel. BCMCS uses Reed-Solomon coding integrated with the MAC protocol for error recovery. We show that this is not effective for mobiles moving at the edge of service area, where the channel condition is bad, resulting in significantly lower video quality. To improve the playback quality of an MPEG-4 FGS (fine granularity scalability) video stream, we propose a hybrid error recovery scheme incorporating a packet scheduler, which uses slots saved by reducing the Reed-Solomon coding overhead. Packets to be retransmitted are prioritized by a utility function which reduces the packet error-rate in the application layer within a fixed retransmission budget by considering of the map of the error control block at each mobile node. Our error recovery scheme also uses the characteristics of MPEG-4 FGS to improve the video quality even for a slow-moving mobile which is experiencing a high error-rate in the physical channel because of error bursts. |
| Starting Page | 241 |
| Ending Page | 258 |
| Page Count | 18 |
| File Format | |
| ISSN | 10220038 |
| Journal | Wireless Networks |
| Volume Number | 15 |
| Issue Number | 2 |
| e-ISSN | 15728196 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2007-04-14 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | cdma2000 1xEV-DO Reed-Solomon Hybrid error recovery BCMCS MPEG-4 FGS Business Information Systems Electrical Engineering Computer Communication Networks Communications Engineering, Networks |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Networks and Communications Information Systems Electrical and Electronic Engineering |
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