TY - GEN
T1 - An efficient transmission of 4D Trajectory short messages on LDACS1
AU - Xie, Jindong
AU - Zhang, Jun
AU - Zhang, Tao
PY - 2014
Y1 - 2014
N2 - In order to support a 4-Dimensional Trajectory (4DT) based Air Traffic Services (ATS), aircraft should update trajectory data back to a ground control center with aeronautical short messages (ASM). An efficient transmission mechanism for 4DT-ASM is developed in this study. The proposed approach firstly divides aircraft into groups by spatial diversity. Then, if one airborne station (AS) requests resource for sending ASM, the control will allocate the corresponding radio resources to all group members including this AS. Thanks to the space division multiple access (SDMA), all aircraft in the same group could transmit ASM randomly without causing any collision. The capacity of 4DT-ASM hereby will be improved and the request time delay of other AS nodes in this group can be saved, i.e., the real-time performance enhancement. Furthermore, a low complex selection algorithm for grouping aircraft is detailed analyzed, with which the control could group aircraft under SINR constraints. Simulation results prove that SDMA based collision free random access (CFRA) can improve the spectrum efficiency and reduce average time delay remarkably.
AB - In order to support a 4-Dimensional Trajectory (4DT) based Air Traffic Services (ATS), aircraft should update trajectory data back to a ground control center with aeronautical short messages (ASM). An efficient transmission mechanism for 4DT-ASM is developed in this study. The proposed approach firstly divides aircraft into groups by spatial diversity. Then, if one airborne station (AS) requests resource for sending ASM, the control will allocate the corresponding radio resources to all group members including this AS. Thanks to the space division multiple access (SDMA), all aircraft in the same group could transmit ASM randomly without causing any collision. The capacity of 4DT-ASM hereby will be improved and the request time delay of other AS nodes in this group can be saved, i.e., the real-time performance enhancement. Furthermore, a low complex selection algorithm for grouping aircraft is detailed analyzed, with which the control could group aircraft under SINR constraints. Simulation results prove that SDMA based collision free random access (CFRA) can improve the spectrum efficiency and reduce average time delay remarkably.
UR - http://www.scopus.com/inward/record.url?scp=84902295479&partnerID=8YFLogxK
U2 - 10.1109/ICNSurv.2014.6820025
DO - 10.1109/ICNSurv.2014.6820025
M3 - Conference contribution
AN - SCOPUS:84902295479
SN - 9781479948918
T3 - Integrated Communications, Navigation and Surveillance Conference, ICNS
SP - W31-W311
BT - ICNS 2014 Conference - Blocks and Builds
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th Integrated Communications, Navigation and Surveillance Conference, ICNS 2014
Y2 - 8 April 2014 through 10 April 2014
ER -