{"id":5944,"date":"2022-03-22T21:14:12","date_gmt":"2022-03-22T21:14:12","guid":{"rendered":"https:\/\/www.5gworldpro.com\/?p=5944"},"modified":"2022-03-22T21:14:12","modified_gmt":"2022-03-22T21:14:12","slug":"how-5g-dss-works","status":"publish","type":"post","link":"https:\/\/new.5gworldpro.com\/?p=5944","title":{"rendered":"How 5G DSS Works\u00a0?"},"content":{"rendered":"<p>When NR TDD spectrum is not yet available, spectrum sharing enables \u00a0pooling of radio resources in both UL and DL directions according to instant needs and pre-de\ufb01ned policies between LTE and NR (5G), below the working principle\u00a0:<\/p>\n<ul>\n<li>NR signals are transmitted over unused LTE resource<\/li>\n<li>With LTE, all the channels are statically assigned in the time-frequency, the NR physical layer is extremely flexible for reference signals, data and control channels<\/li>\n<li>Only 5G devices are made aware of DSS<\/li>\n<li>Existing LTE devices remain unaffected (i.e. LTE protocols in connected or idle mode)<\/li>\n<li>LTE PDSCH and NR PDSCH can coexist by using different set of RBs<\/li>\n<\/ul>\n<p><em><strong>What are the key UE features used for DSS\u00a0?<\/strong><\/em><\/p>\n<ol>\n<li>SSB allocation on MBSFN subframes (supported by UEs above Rel8)<\/li>\n<\/ol>\n<p>=&gt; to handle NR Synchronisation Signals (SS Block) \u00a0collision with con\ufb01guration LTE Signals<\/p>\n<p>2. LTE CRS rate matching or symbol\/RB rate matching =&gt; to map around LTE signals PBCH\/PSS\/SSS,PDCCH region, etc. and avoid NR transmissions colliding with them<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When NR TDD spectrum is not yet available, spectrum sharing enables \u00a0pooling of radio resources in both UL and DL directions according to instant needs and pre-de\ufb01ned policies between LTE and NR (5G), below the working principle\u00a0: NR signals are transmitted over unused LTE resource With LTE, all the channels are statically assigned in the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5945,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[488,196,197],"class_list":{"0":"post-5944","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-5g-knowledge","8":"tag-5g-dss","9":"tag-dss","10":"tag-dynamic-spectrum-sharing"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 (Yoast SEO v22.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How 5G DSS Works\u00a0? 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