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The Radio Resource Control (RRC) protocol is used in UMTS, LTE and 5G on the Air interface. It is a layer 3 (Network Layer) protocol used between UE and Base Station. This protocol is specified by 3GPP in TS 25.331 [2] for UMTS, in TS 36.331 [3] for LTE and in TS 38.331 [4] for 5G New Radio. RRC messages are transported via the PDCP-Protocol.
Azure Linux, previously known as CBL-Mariner (in which CBL stands for Common Base Linux), [3] is a free and open-source Linux distribution that Microsoft has developed. It is the base container OS for Microsoft Azure services [ 4 ] [ 5 ] and the graphical component of WSL 2 .
The Radio Network Controller (RNC) is a governing element in the UMTS radio access network and is responsible for controlling the Node Bs that are connected to it. The RNC carries out radio resource management, some of the mobility management functions and is the point where encryption is done before user data is sent to and from the mobile.
Wireless tools for Linux is a collection of user-space utilities written for Linux kernel-based operating systems to support and facilitate the configuration of device drivers of wireless network interface controllers and some related aspects of networking using the Linux Wireless Extension.
Azure Sphere is an application platform with integrated communications and security features developed and managed by Microsoft for Internet Connected Devices.. The platform consists of integrated hardware built around a silicon chip: the Azure Sphere OS (operating system for Azure Sphere), an operating system based on Linux, and the Azure Sphere Security Service, a cloud-based security service.
Dynamic RRM schemes adaptively adjust the radio network parameters to the traffic load, user positions, user mobility, quality of service requirements, base station density, etc. Dynamic RRM schemes are considered in the design of wireless systems, in view to minimize expensive manual cell planning and achieve "tighter" frequency reuse patterns, resulting in improved system spectral efficiency.
The UE will send RRC measurement reports that include RSRP values in a binned format. The reporting range of RSRP is defined from −140 to −44 dBm with 1 dB resolution. The main purpose of RSRP is to determine the best cell on the DL radio interface and select this cell as the serving cell for either initial random access or intra-LTE handover.
Then the operator attempts to reestablish the connection. The flashing light of this early equipment is the origin of the phrase "flashing the switchhook". Centrex telephones added a hook-flash button in the 1960s after some users attempted the attendant-recall function incorrectly and disconnected their calls inadvertently.