Abstract
Different from the traditional configuration of hierarchical cellular, we introduce the joint base-station multi-antenna multi-beam and channel assignment scheme for hierarchical cellular in this paper. The proposed scheme is based on multi-beam base-station antenna splitting in the elevation-radiating plane, and a dynamic channel allocation scheme by combining the adaptive antenna technologies. Simulation results show that the proposed configuration of the hierarchical cellular can enhance the spectral efficiency remarkably.
Highlights
Considerable research efforts have been put into hierarchical cellular system and dynamic channel assignment [1–7]
The beam can be split or the multibeam method can be adopted to reduce the influence caused by the radio propagation environment, which leads to the improved channel quality and the enhanced system capacity
All the beams of the basestation adaptive antennas share available channels and the antenna system is responsible for determining which beam the current location of the mobile station belongs to; it uses the antenna switch to connect the radio channel to the beam, correspondingly
Summary
Considerable research efforts have been put into hierarchical cellular system and dynamic channel assignment [1–7]. An intelligent cell with switch beam is introduced in [17, 27, 28] In this system, all the beams of the basestation adaptive antennas share available channels and the antenna system is responsible for determining which beam the current location of the mobile station belongs to; it uses the antenna switch to connect the radio channel to the beam, correspondingly. All the beams of the basestation adaptive antennas share available channels and the antenna system is responsible for determining which beam the current location of the mobile station belongs to; it uses the antenna switch to connect the radio channel to the beam, correspondingly This intelligent cell makes sectorization within cell and the mobile station does not need to handover among beams. By combining the adaptive antenna technology, mobile communication cellular technology, dynamic channel allocation fusion concept, and the coverage uniformity description, a vertical adaptive multiantenna technology and a dynamic channel allocation scheme are exploited to design the hierarchical cellular
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