# 9.9 UL calculation of the UE frequencies

The frequency of the <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">UE</span></span></span> in <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">UL</span></span></span> is calculated as follow

<div class="fabric-editor-block-mark fabric-editor-alignment" data-align="end" id="bkmrk-"><div data-testid="inline-image"><div class="_1e0c1nu9" role="presentation"><a class="_ymio1r31 _ypr0glyw _zcxs1o36 _mizu1v1w _1ah3dkaa _ra3xnqa1 _128mdkaa _1cvmnqa1 _4davt94y _4bfu1r31 _1hms8stv _ajmmnqa1 _vchhusvi _kqswh2mm _ect4ttxp _syaz13af _1a3b1r31 _4fpr8stv _5goinqa1 _f8pj13af _9oik1r31 _1bnxglyw _jf4cnqa1 _30l313af _1nrm1r31 _c2waglyw _1iohnqa1 _9h8h12zz _10531ra0 _1ien1ra0 _n0fx1ra0 _1vhv17z1">![](blob:https://ecowiki.atlassian.net/b48d5ac0-6a32-4441-af03-22e5196c961d#media-blob-url=true&id=afbbec4b-ab0d-4c6d-be52-efc42ad76734&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18&contextId=contentId-493487&collection=contentId-493487)</a></div></div></div>[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/w73ACaPQYGdCeM4x-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/w73ACaPQYGdCeM4x-image.png)(Eq. 61)

with Diff taking into account for any difference between the BWsystem and the effective bandwidth ( ) so that

[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/00K99xPlxDyDZeTi-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/00K99xPlxDyDZeTi-image.png)(Eq. 62)

where

- F<sub data-renderer-mark="true"><span data-highlighted="true" data-vc="highlighted-text">UE</span></sub>: Centre frequency of the <span data-highlighted="true" data-vc="highlighted-text">UE</span>;
- F<sub data-renderer-mark="true">system</sub>: Frequency of the system (i.e. the network);
- <sub data-renderer-mark="true"><span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">BW</span></span></span> system</sub> : Bandwidth of the system;
- N\_RB\_UE: Number of Resource Blocks (<span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">RB</span></span></span>) per mobile;
- N\_RB\_BS: Number of <span data-highlighted="true" data-vc="highlighted-text">RB</span> for the <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">BS</span></span></span>;
- BW\_RB: Bandwidth of the <span data-highlighted="true" data-vc="highlighted-text">RB</span>;
- N<sub data-renderer-mark="true"><span data-highlighted="true" data-vc="highlighted-text">UE</span></sub>: Number of UEs in the system (calculated as NRB\_BS/NRB\_UE);
- Index<sub data-renderer-mark="true">link</sub>: Index of the specific link <span data-highlighted="true" data-vc="highlighted-text">UE</span> to serving <span data-highlighted="true" data-vc="highlighted-text">BS</span> (input to SEAMCAT). Index = \[0, <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">NUE</span></span></span>-1\].

[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/gf9S8QwuqZsosc0X-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/gf9S8QwuqZsosc0X-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-unmd3w" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="685" data-vc="media-single" data-width="579" data-width-type="pixel" id="bkmrk-figure-206%3A-illustra"><div class="css-1tfn0mq"><div data-alt="" data-collection="contentId-493487" data-context-id="493487" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="618" data-id="a1176732-d55f-465a-bb17-40608b2b3d56" data-node-type="media" data-renderer-start-pos="686" data-type="file" data-width="1433"><div class="_2rko18qm _vchhusvi _kqswh2mm _ect4ttxp _p12f1osq _c71l1osq _1bsb1qmm _4t3ine4n _1hlmd0i9 _1rquusvi _eg541i5c _mts3kb7n _1ntskb7n _yfmhtlke _5sb1v00u new-file-experience-wrapper" data-media-vc-wrapper="true" data-testid="media-card-view" id="bkmrk-figure-206%3A-illustra-1"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="6.gif" data-test-progress="1" data-test-source="remote" data-test-status="complete" data-testid="media-file-card-view"><div class="_kqswstnw _1bsb1osq _4t3i1osq _1e0c1txw _2lx21bp4 _1bah1h6o _4cvr1h6o align-center" data-testid="ImageRendererWrapper">![](blob:https://ecowiki.atlassian.net/a60ce8bb-2fa8-49b5-b3e5-2d73f9418d4b#media-blob-url=true&id=a1176732-d55f-465a-bb17-40608b2b3d56&collection=contentId-493487&contextId=493487&width=1433&height=618&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 206: Illustration of the calculation of the <span data-highlighted="true" data-vc="highlighted-text">UE</span> frequencies in <span data-highlighted="true" data-vc="highlighted-text">UL</span>**</div></div></div></div></div></div>