In this paper, we investigate a directional millimeter wave transmission scheme for vehicle-to-vehicle communications in an ad-hoc network when inaccurate location information is given. Considering the location inaccuracy, we propose an algorithm for both beam alignment and transmit probability adjustment. Numerical evaluations verify that the proposed algorithm produces more energy-efficient transmission with lower transmit probability while guaranteeing an SINR requirement.
|Title of host publication||2017 IEEE Vehicular Networking Conference, VNC 2017|
|Editors||Onur Altintas, Claudio Casetti, Rui Meireles, Nicholas Kirsch, Renato Lo Cigno|
|Publisher||IEEE Computer Society|
|Number of pages||2|
|Publication status||Published - 2018 Jan 30|
|Event||2017 IEEE Vehicular Networking Conference, VNC 2017 - Torino, Italy|
Duration: 2017 Nov 27 → 2017 Nov 29
|Name||IEEE Vehicular Networking Conference, VNC|
|Other||2017 IEEE Vehicular Networking Conference, VNC 2017|
|Period||17/11/27 → 17/11/29|
Bibliographical noteFunding Information:
reduced sum of transmit probabilities by 77.6% compared to the omni-directional transmission without adjusting transmit probabilities. We also verify that fine beam control enables us to improve energy efficiency compared to the case of random beam widths. With the additional beam control and probability adjustment, the sum of transmit probabilities is reduced by 16.7% compared to the case of adjusting only transmit probabilities. IV. CONCLUSION In this paper, we propose an ALOHA based directional transmission scheme for V2V communications when inaccurate location information is given. Considering the error bound of location information, we adjust beam widths and transmit probabilities for energy-efficient transmission. We find that narrow beam widths obtained from fine beam alignment lead to more energy-efficient transmission with lower transmit probabilities while guaranteeing SINR requirements. Future research will be generalized our algorithm in N -pair scenario and also considered the beam-level beam width of receiver. ACKNOWLEDGMENT This work was supported by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIT) (2016-0-00208, High Accurate Positioning Enabled MIMO Transmission and Network Technologies for Next 5G-V2X (vehicle-to-everything) Services).
© 2017 IEEE.
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Automotive Engineering
- Control and Systems Engineering
- Electrical and Electronic Engineering