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In this paper, a simplified uplink transmission procedure is proposed for reducing energy consumption and improving lifetime of CIoT devices. In the proposed procedure, the CIoT devices register information on their service and traffic to the networks, and the networks statically allocate pre-defined amounts of radio resources when the CIoT devices have requested permission for their uplink transmissions. This paper provides details of the proposed procedure comparing with those of the current GSM procedure, and defines detailed operations of the devices and the networks for the proposed one. This shows that the proposed scheme can effectively support CIoT services on GSM networks.

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In order to accommodate the ever growing demand of data traffic in future mobile networks, the millimeter-wave frequency band (30-300GHz) is considered as a for beyond 4G networks. However, unlike the conventional sub-3GHz band, the propagation characteristic of millimeter-wave band is poorly propagated toward non-line-of-sight regions. To compensate the loss caused by poor propagation in millimeterwave band, and utilize the band more efficiently beamforming has considered as a key solution with massive antenna structure (MAS) and spatial division multiple access (SDMA) technologies. In MAS with beamforming, due to the large number of antenna operating very close to each other, yields to a new issue known as inter-beam interference should be significantly researched. In order to solve this issue we propose a dynamic beam control scheme for MAS. Our simulation results shows that the proposed scheme reduces the inter-beam interference and hence increases the overall network capacity.