Abstract
The high altitude platform station (HAPS) system is an essential component of the air-based network. It can shorten transmission delay and make a better user experience compared with satellite networks, and it can also be easily deployed and cover a larger area compared with international mobile telecommunications (IMT). In order to meet the needs of users with asymmetric and random data flow, the spectrum sharing and dynamic time division duplexing (TDD) mode are used in HAPS-IMT heterogeneous network. However, the cross-link interference brought by TDD mode will lead to the degradation of system performance. In this paper, a resource allocation algorithm based on power control and dynamic transmission protocol configuration is proposed. Firstly, a specific timeslot, “low power almost-bank subframe (LP-ABS)”, is introduced into the frame structure of the HAPS physical layer. The transmission protocol designing could mitigate inter-layer interference efficiently by power control in “LP-ABS”. Secondly, the utilization function is adopted for assessing the system performance, which gives attention to both diversified requirements on the quality of services (QoS) and the throughput of the HAPS-IMT system. Simulation results show that power control and resource allocation technologies proposed in this paper can effectively improve system performance and user satisfaction.
Highlights
This paper mainly focuses on the enhanced mobile broadband service (eMBB) and machine communication services (mMTC) services. eMBB is a kind of differentiated service (DiffServ), called soft quality of services (QoS) services, such as AR/VR and streaming media. eMBB requires a certain QoS guarantee to make the transmission smoothly
This paper mainly focuses on systematic research on the resource management of the high altitude platform station (HAPS)-international mobile telecommunications (IMT) network to solve the scheduling issue of the eMBB and mMTC services
One HAPS is deployed in the center, and several ground base stations (GBS) are randomly deployed around the HAPS
Summary
The rapid development of human information society has seen the demands for ubiquitous network access and rapid growth of various services. Increasingly more attention has been paid to integrated systems and future-oriented traffic types (as follows)
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