{"id":60867,"date":"2022-10-30T03:49:37","date_gmt":"2022-10-30T03:49:37","guid":{"rendered":"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/"},"modified":"2022-10-31T08:31:17","modified_gmt":"2022-10-31T08:31:17","slug":"what-is-s8-interface-in-lte","status":"publish","type":"post","link":"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/","title":{"rendered":"What is S8 interface in LTE?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_53 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6635ac4fcc061\"><span class=\"\"><span style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6635ac4fcc061\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S8_interface_in_LTE\" title=\"What is S8 interface in LTE?\">What is S8 interface in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S5_S8_in_LTE\" title=\"What is S5 S8 in LTE?\">What is S5 S8 in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S11_interface_in_LTE\" title=\"What is S11 interface in LTE?\">What is S11 interface in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_an_LTE_interface\" title=\"What is an LTE interface?\">What is an LTE interface?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S8_in_LTE\" title=\"What is S8 in LTE?\">What is S8 in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_are_interfaces_in_LTE\" title=\"What are interfaces in LTE?\">What are interfaces in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S7_interface_in_LTE\" title=\"What is S7 interface in LTE?\">What is S7 interface in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S9_interface_in_LTE\" title=\"What is S9 interface in LTE?\">What is S9 interface in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S4_interface_in_LTE\" title=\"What is S4 interface in LTE?\">What is S4 interface in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S10_interface\" title=\"What is S10 interface?\">What is S10 interface?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S1-MME_interface_in_LTE\" title=\"What is S1-MME interface in LTE?\">What is S1-MME interface in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#Why_are_we_using_S1_interface\" title=\"Why are we using S1 interface?\">Why are we using S1 interface?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_network_element_is_LTE\" title=\"What network element is LTE?\">What network element is LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_LTE_network_and_how_does_it_work\" title=\"What is LTE network and how does it work?\">What is LTE network and how does it work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_are_the_components_of_LTE\" title=\"What are the components of LTE?\">What are the components of LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_the_function_of_LTE\" title=\"What is the function of LTE?\">What is the function of LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S11_in_LTE\" title=\"What is S11 in LTE?\">What is S11 in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S1_interface_in_LTE\" title=\"What is S1 interface in LTE?\">What is S1 interface in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_are_LTE_network_elements\" title=\"What are LTE network elements?\">What are LTE network elements?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_the_difference_between_S5_and_S8_interfaces_in_LTE\" title=\"What is the difference between S5 and S8 interfaces in LTE?\">What is the difference between S5 and S8 interfaces in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S5_interface\" title=\"What is S5 interface?\">What is S5 interface?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S9_interface\" title=\"What is S9 interface?\">What is S9 interface?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_an_interface_in_LTE\" title=\"What is an interface in LTE?\">What is an interface in LTE?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_Gx_and_Gy_interface\" title=\"What is Gx and Gy interface?\">What is Gx and Gy interface?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/#What_is_S6b_interface_used_for\" title=\"What is S6b interface used for?\">What is S6b interface used for?<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S8_interface_in_LTE\"><\/span>What is S8 interface in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The S8 interface is <b>the roaming variant of S5 and is used in roaming scenarios with the S-GW in the visited network and the P-GW in the home network.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S5_S8_in_LTE\"><\/span>What is S5 S8 in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>S5\/S8 This is <b>the interface between the S-GW and P-GW. In principle S5 and S8 is the same interface, the difference being that S8 is used when roaming between different operators while S5 is network internal. The S5\/S8 interface is used within the Evolved Packet Core (EPC) for LTE.<\/b><\/p>\n<p><strong>Also Check: <\/strong><a href=\"https:\/\/studioapartmenthub.com\/how-much-is-a-used-s8-worth\/\">How much is a used S8 worth?<\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S11_interface_in_LTE\"><\/span>What is S11 interface in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>S11 This is <b>the interface between the MME and S-GW in an LTE network. The interface is based on Gn\/GTP-Control (GTP-C) (interface between SGSN-GGSN) with some additional functions for paging coordination, mobility compared to the legacy Gn\/GTP-C (SGSN-GGSN) interface. S11 is a many-to-many interface.<\/b><\/p>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/23v_evnig3M\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_an_LTE_interface\"><\/span>What is an LTE interface?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Within an LTE network, LTE Interfaces <b>connect the various components to or within the core. Interfaces allow the MME, SGW and PGW to cooperate with other network elements (e.g. HSS or PCRF). Each one of them is built in a standard way described by 3GPP.org.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S8_in_LTE\"><\/span>What is S8 in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>S5\/S8 This is the interface between the S-GW and P-GW. In principle S5 and S8 is the same interface, the difference being that S8 is <b>used when roaming between different operators while S5 is network internal. The S5\/S8 interface is used within the Evolved Packet Core (EPC) for LTE.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_are_interfaces_in_LTE\"><\/span>What are interfaces in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Within an LTE network, LTE Interfaces <b>connect the various components to or within the core. Interfaces allow the MME, SGW and PGW to cooperate with other network elements (e.g. HSS or PCRF). Each one of them is built in a standard way described by 3GPP.org.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S7_interface_in_LTE\"><\/span>What is S7 interface in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Interface: S7 Protocol Used: Gx. Description: It <b>provides transfer of QoS service and charging rules from Policy and PCRF to Policy and Charging Enforcement Function (PCEF) in PDN-GW<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S9_interface_in_LTE\"><\/span>What is S9 interface in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>S9:- It <b>provides transfer of (QoS) policy and charging control information between the Home PCRF and the Visited PCRF in order to support local breakout function. S10:- Reference point between MMEs for MME relocation and MME to MME information transfer.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S4_interface_in_LTE\"><\/span>What is S4 interface in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The S8 interface is <b>the roaming variant of S5 and is used in roaming scenarios with the S-GW in the visited network and the P-GW in the home network.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S10_interface\"><\/span>What is S10 interface?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Within an LTE network, LTE Interfaces <b>connect the various components to or within the core. Interfaces allow the MME, SGW and PGW to cooperate with other network elements (e.g. HSS or PCRF). Each one of them is built in a standard way described by 3GPP.org.<\/b><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"132255\" data-permalink=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/what-is-s10-interface\/\" data-orig-file=\"https:\/\/i0.wp.com\/studioapartmenthub.com\/wp-content\/uploads\/2022\/04\/What-is-S10-interface.png?fit=1088%2C687&amp;ssl=1\" data-orig-size=\"1088,687\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"What is S10 interface\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/studioapartmenthub.com\/wp-content\/uploads\/2022\/04\/What-is-S10-interface.png?fit=300%2C189&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/studioapartmenthub.com\/wp-content\/uploads\/2022\/04\/What-is-S10-interface.png?fit=1024%2C647&amp;ssl=1\" class=\"alignnone size-full wp-image-132255 aligncenter\" src=\"https:\/\/i0.wp.com\/studioapartmenthub.com\/wp-content\/uploads\/2022\/04\/What-is-S10-interface.png?resize=1088%2C687&#038;ssl=1\" alt=\"What is S10 interface?\" width=\"1088\" height=\"687\" srcset=\"https:\/\/i0.wp.com\/studioapartmenthub.com\/wp-content\/uploads\/2022\/04\/What-is-S10-interface.png?w=1088&amp;ssl=1 1088w, https:\/\/i0.wp.com\/studioapartmenthub.com\/wp-content\/uploads\/2022\/04\/What-is-S10-interface.png?resize=300%2C189&amp;ssl=1 300w, https:\/\/i0.wp.com\/studioapartmenthub.com\/wp-content\/uploads\/2022\/04\/What-is-S10-interface.png?resize=1024%2C647&amp;ssl=1 1024w, https:\/\/i0.wp.com\/studioapartmenthub.com\/wp-content\/uploads\/2022\/04\/What-is-S10-interface.png?resize=768%2C485&amp;ssl=1 768w\" sizes=\"(max-width: 1088px) 100vw, 1088px\" data-recalc-dims=\"1\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S1-MME_interface_in_LTE\"><\/span>What is S1-MME interface in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>S10 This is <b>a control interface between the MMEs which will be very similar to the S3 interface between the SGSN and MME. The interface is based on Gn\/GTP-C (SGSNSGSN) with additional functionality. S10 is a many-to-many interface. The S10 interface is used within the Evolved Packet Core (EPC) for LTE.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_are_we_using_S1_interface\"><\/span>Why are we using S1 interface?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The LTE S1-MME interface is <b>responsible for delivering signaling protocols between the eNodeB and the MME. S1-MME interface consists of a Stream Control Transmission Protocol (SCTP) over IP and supports multiple UEs through a single SCTP association. It also provides guaranteed data delivery.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_network_element_is_LTE\"><\/span>What network element is LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>It is only composed of one network element: the eNodeB (for evolved Node B.). The 3G RNC (Radio Network Controller) inherited from the 2G BSC (Base Station Controller) has disappeared from E-UTRAN and the eNodeB is directly connected to the Core Network using the S1 interface.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_LTE_network_and_how_does_it_work\"><\/span>What is LTE network and how does it work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><b>LTE moves large packets of data to an internet protocol system (IPS). Old ways of moving data used Code-division multiple access (CDMA) and the Global System for Mobile Communications (GSM), and those methods moved only small amounts of data. LTE can handle much more data transfer, and it helps streamline your service.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_are_the_components_of_LTE\"><\/span>What are the components of LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><b>The high-level network architecture of LTE is comprised of the following three main components:<\/b><\/p>\n<ul>\n<li>The User Equipment (UE).<\/li>\n<li>The Evolved UMTS Terrestrial Radio Access Network (E-UTRAN).<\/li>\n<li>The Evolved Packet Core (EPC).<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"What_is_the_function_of_LTE\"><\/span>What is the function of LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In telecommunications, Long-Term Evolution (LTE) is <b>a standard for wireless broadband communication for mobile devices and data terminals, based on the GSM\/EDGE and UMTS\/HSPA standards. It improves on those standards&#8217; capacity and speed by using a different radio interface and core network improvements.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S11_in_LTE\"><\/span>What is S11 in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The S8 interface is <b>the roaming variant of S5 and is used in roaming scenarios with the S-GW in the visited network and the P-GW in the home network.<\/b><\/p>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/kVw0z6OVyyI\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S1_interface_in_LTE\"><\/span>What is S1 interface in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><b>The interfacebetween SGSN and the serving gateway is referred as S4 interface. It provides user plane support for mobility support between the GPRS core and the serving gateway. It also enables the serving gateway to anchor the inter-3GPP handover. S5.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_are_LTE_network_elements\"><\/span>What are LTE network elements?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>LTE S1-UP (user plane) The S1 user plane external interface (S1-U) is defined between the LTE eNodeB and the LTE S-GW. The S1-U interface <b>provides nonguaranteed data delivery of LTE user plane Protocol Data Units (PDUs) between the eNodeB and the S-GW. The transport network layer is built on IP transport and GTP-U.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_the_difference_between_S5_and_S8_interfaces_in_LTE\"><\/span>What is the difference between S5 and S8 interfaces in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Within an LTE network, LTE Interfaces <b>connect the various components to or within the core. Interfaces allow the MME, SGW and PGW to cooperate with other network elements (e.g. HSS or PCRF). Each one of them is built in a standard way described by 3GPP.org.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S5_interface\"><\/span>What is S5 interface?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The S8 interface is <b>the roaming variant of S5 and is used in roaming scenarios with the S-GW in the visited network and the P-GW in the home network.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S9_interface\"><\/span>What is S9 interface?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In wireless applications, the S9 interface is <b>a 4G interface between the Visiting PCRF and Home PCRF.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_an_interface_in_LTE\"><\/span>What is an interface in LTE?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Within an LTE network, LTE Interfaces <b>connect the various components to or within the core. Interfaces allow the MME, SGW and PGW to cooperate with other network elements (e.g. HSS or PCRF). Each one of them is built in a standard way described by 3GPP.org.<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Gx_and_Gy_interface\"><\/span>What is Gx and Gy interface?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><b>Gx interface enables signaling of PCC decisions, negotiation of IP-CAN bearer establishment mode and termination of Gx session. <\/b><b>Gy. <\/b><b>It is the online charging reference point. Gy lies between PCEF (Policy Control Enforcement Function) and OCS (Online Charging Function).<\/b><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_S6b_interface_used_for\"><\/span>What is S6b interface used for?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The S6b interface is used to inform the 3GPP AAA server\/proxy about current PDN GW identity and the APN being used for a given UE, or that a certain PDN GW and APN pair is no longer used. This occurs, for example, when a PDN connection is established or closed.<\/p>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/87jV-9QfnQ0\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is S8 interface in LTE? The S8 interface is the roaming variant of S5 and is used in roaming scenarios with the S-GW in the visited network and the P-GW in the home network. What is S5 S8 in LTE? S5\/S8 This is the interface between the S-GW and P-GW. In principle S5 and&#8230;<\/p>\n","protected":false},"author":3,"featured_media":132254,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_jetpack_newsletter_access":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[833],"tags":[],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is S8 interface in LTE? - Studio Apartment Hub<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/studioapartmenthub.com\/what-is-s8-interface-in-lte\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is S8 interface in LTE? - Studio Apartment Hub\" \/>\n<meta property=\"og:description\" content=\"What is S8 interface in LTE? 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