name: RAT
full_form: Radio Access Technology
context: RAT1 cell provides a basic coverage while RAT 2 cell provides additional capacity and/or different services/service quality at specific locations (âhotspotsâ). The coverage area of RAT 2 cell is usually significantly smaller than the coverage area of RAT 1 cell. RAT 1 cell fully covers RAT 2 cell. The locations of the antennas of RAT 1 and 2 are not the same. The RAT 2 can consist of single cells â see figure 4.3.1-1 â and/or a group of cells â see figure 4.3.1-2. A RAT 2 cell may be overlaid by one RAT 1 cell â like the left part in figure 4.3.1-1 - or by multiple RAT 1 cells â like the middle part in figure 4.3.1-1. Figure 4.3.1-1 Figure 4.3.1-2 In case RAT2 is LTE and the cells can overlap, both the LTE Energy Saving function and the inter-RAT Energy Saving function can be executed. Figures 4.3.1-4, 4.3.1-5 show the two possible steps: Step 1) LTE Energy Saving is activated. In this case some LTE cells are turned off and another LTE cell enters into compensation mode (see 32.551).
description: Radio Access Technology (RAT) refers to the standards governing telecommunications operations, specifically the technologies used for accessing wireless networks.
explanation: The text explicitly mentions 'different RATs' and describes a scenario where two different Radio Access Technologies coexist and overlap. This indicates that RAT is being referred to as a technology standard in this context.
section_title: 4.3.1Use case 1 Overlapping of non-collocated cells of different RATs with significantly different coverage areas
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