Embedded Parallelism Enabling Ultralow-Power Zigbee Voice Communications
Short-range wireless technologies are known to transmit voice, audio, image, and video messages in real time. Energy consumption and transmission reach are critical in such networks, especially for portable and power autonomous devices. The purpose of the Voice over Zigbee technology is to provide a...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Journal of Computer Networks and Communications |
| Online Access: | http://dx.doi.org/10.1155/2019/6595282 |
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| author | A. Meliones E. Touloupis J. Perello |
| author_facet | A. Meliones E. Touloupis J. Perello |
| author_sort | A. Meliones |
| collection | DOAJ |
| description | Short-range wireless technologies are known to transmit voice, audio, image, and video messages in real time. Energy consumption and transmission reach are critical in such networks, especially for portable and power autonomous devices. The purpose of the Voice over Zigbee technology is to provide a competitive offering that excels in these performance aspects. Due to the CSMA-CA mechanism implemented in the 802.15.4 layer, a well-designed strategy must be considered in Zigbee to create a robust, reliable, and full-duplex conversation. In past efforts, we proved that the radio channel of Zigbee has enough bandwidth to support a full-duplex conversation with narrow-band voice codecs. Our embedded implementation of the Speex voice codec targeted the development of a low-cost, ultralow-power, long-range wireless headset using Zigbee technology to transmit voice in full-duplex mode for use with leading PC VoIP programs. Furthermore, we presented the real environment performance evaluation and power consumption tests involving the developed headset prototype. Talk time is comparable to Bluetooth including at the power budget, the codec processing, and analogue audio interface, but its deep-sleep lifetime more than doubles the Bluetooth performance. This was one of the very few successful efforts to port a voice codec on an ultralow-power DSP for use with power sensitive Zigbee applications, which is highly cited in the literature, proving additionally that using an open-source codec can deliver similar voice quality, reducing the total system cost. The current paper elaborates on the embedded parallelism of the Speex implementation and the exploitation of the DSP architectural parallelism which critically enabled the Voice over Zigbee application on the ultralow-power DSP platform. Another significant contribution of this work is towards understanding and resolving the challenges faced when trying to achieve good quality transmission of media over constrained devices and networks. The way to new ultralow-power voice-related Zigbee and constrained network applications is open. |
| format | Article |
| id | doaj-art-915df6ee3282435d9e8633e6aff8d2f9 |
| institution | OA Journals |
| issn | 2090-7141 2090-715X |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Computer Networks and Communications |
| spelling | doaj-art-915df6ee3282435d9e8633e6aff8d2f92025-08-20T02:09:45ZengWileyJournal of Computer Networks and Communications2090-71412090-715X2019-01-01201910.1155/2019/65952826595282Embedded Parallelism Enabling Ultralow-Power Zigbee Voice CommunicationsA. Meliones0E. Touloupis1J. Perello2Department of Digital Systems, University of Piraeus, Piraeus, GreeceInAccess Networks, Athens, GreeceAteknea Solutions, Carrer de Víctor Pradera, 45, 08940 Cornellà, Barcelona, SpainShort-range wireless technologies are known to transmit voice, audio, image, and video messages in real time. Energy consumption and transmission reach are critical in such networks, especially for portable and power autonomous devices. The purpose of the Voice over Zigbee technology is to provide a competitive offering that excels in these performance aspects. Due to the CSMA-CA mechanism implemented in the 802.15.4 layer, a well-designed strategy must be considered in Zigbee to create a robust, reliable, and full-duplex conversation. In past efforts, we proved that the radio channel of Zigbee has enough bandwidth to support a full-duplex conversation with narrow-band voice codecs. Our embedded implementation of the Speex voice codec targeted the development of a low-cost, ultralow-power, long-range wireless headset using Zigbee technology to transmit voice in full-duplex mode for use with leading PC VoIP programs. Furthermore, we presented the real environment performance evaluation and power consumption tests involving the developed headset prototype. Talk time is comparable to Bluetooth including at the power budget, the codec processing, and analogue audio interface, but its deep-sleep lifetime more than doubles the Bluetooth performance. This was one of the very few successful efforts to port a voice codec on an ultralow-power DSP for use with power sensitive Zigbee applications, which is highly cited in the literature, proving additionally that using an open-source codec can deliver similar voice quality, reducing the total system cost. The current paper elaborates on the embedded parallelism of the Speex implementation and the exploitation of the DSP architectural parallelism which critically enabled the Voice over Zigbee application on the ultralow-power DSP platform. Another significant contribution of this work is towards understanding and resolving the challenges faced when trying to achieve good quality transmission of media over constrained devices and networks. The way to new ultralow-power voice-related Zigbee and constrained network applications is open.http://dx.doi.org/10.1155/2019/6595282 |
| spellingShingle | A. Meliones E. Touloupis J. Perello Embedded Parallelism Enabling Ultralow-Power Zigbee Voice Communications Journal of Computer Networks and Communications |
| title | Embedded Parallelism Enabling Ultralow-Power Zigbee Voice Communications |
| title_full | Embedded Parallelism Enabling Ultralow-Power Zigbee Voice Communications |
| title_fullStr | Embedded Parallelism Enabling Ultralow-Power Zigbee Voice Communications |
| title_full_unstemmed | Embedded Parallelism Enabling Ultralow-Power Zigbee Voice Communications |
| title_short | Embedded Parallelism Enabling Ultralow-Power Zigbee Voice Communications |
| title_sort | embedded parallelism enabling ultralow power zigbee voice communications |
| url | http://dx.doi.org/10.1155/2019/6595282 |
| work_keys_str_mv | AT ameliones embeddedparallelismenablingultralowpowerzigbeevoicecommunications AT etouloupis embeddedparallelismenablingultralowpowerzigbeevoicecommunications AT jperello embeddedparallelismenablingultralowpowerzigbeevoicecommunications |