What is Carrier to Interference plus Noise Ratio in LTE
LTE is designed to operate in environments where there are peripheral interventions. Link performance degrades as the C/I (i.e. Carrier interference ratio) is reduced, however, it may be acceptable in places with zero or negative C/i. every site and sector LTE systems operating on the same channel so that they can receive interference from all the other sectors within the system. As a consequence, The border between sites and sectors that have overlapping coverage will exhibit 0 DB CINR or below.
One of the goals of the system design should minimize interference in the system. IN desire to keep a CINR below an acceptable criterion. (Acceptable criterion for CINR MCS level varies from one to another.) CINR requirement will also you need to consider for fast fading environment.)
The carrier to interference plus noise (CINR) is the ratio of the signal carrier best servings for the intervention seemed at all other sites/sectors, plus all the noise. This ratio provides understand which sites/sectors can produce an excess of intervention so that design can be adjusted to correct these issues. After 1 x 3 x 1 site posting reuse minimizes the template along with 1 x 3 after x 3 block reuse template resource group the lighting area are the peripheral intervention. Choice the antenna down-tilt adjustment also helps towards that goal.
Although the link budget can be created for a given level of MCS (16QAM) for achieve high data rate target edge CINR requirements necessary to achieve this objective, MCS level is not allowed for this rate to be achieved within the site of the border areas where there are low CINR conditions. It is important, therefore, that the study is the CINR to achieve the desired results can be achieved just by looking at the Signal strength (RSS) is not sufficient.