{"id":4006,"date":"2026-03-18T11:32:56","date_gmt":"2026-03-18T11:32:56","guid":{"rendered":"https:\/\/blog.lebara.co.uk\/?p=4006"},"modified":"2026-04-08T11:37:02","modified_gmt":"2026-04-08T10:37:02","slug":"how-roaming-works-technically-in-mobile-networks","status":"publish","type":"post","link":"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/","title":{"rendered":"\u30e2\u30d0\u30a4\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3051\u308b\u30ed\u30fc\u30df\u30f3\u30b0\u306e\u6280\u8853\u7684\u4ed5\u7d44\u307f"},"content":{"rendered":"<p>\u3042\u306a\u305f\u306e\u643a\u5e2f\u96fb\u8a71\u304c\u5916\u56fd\u306b\u63a5\u7d9a\u3059\u308b\u3068\u304d <a href=\"https:\/\/blog.lebara.co.uk\/ja\/how-to-find-out-what-network-youre-on\/\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/a> \u7570\u306a\u308b\u56fd\u3067\u30ed\u30fc\u30df\u30f3\u30b0\u3092\u884c\u3046\u5834\u5408\u3001\u821e\u53f0\u88cf\u3067\u306f\u8907\u96d1\u306a\u6280\u8853\u30d7\u30ed\u30bb\u30b9\u306e\u9023\u9396\u304c\u767a\u751f\u3059\u308b\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u304c\u30e2\u30d0\u30a4\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u6280\u8853\u7684\u306b\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b\u306b\u3064\u3044\u3066\u8aac\u660e\u3059\u308b\u3002 <a href=\"https:\/\/blog.lebara.co.uk\/ja\/how-to-cut-the-cost-of-international-calls-on-a-mobile-phone\/\">\u56fd\u969b<\/a> \u63a5\u7d9a\u304c\u53ef\u80fd\u3067\u3042\u308b\u3002.<\/p>\n\n\n\n<p>\u30ed\u30fc\u30df\u30f3\u30b0\u306b\u3088\u308a\u3001SIM\u306f\u4e16\u754c\u4e2d\u3069\u3053\u3067\u3082\u3001\u8a2a\u554f\u5148\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u63a5\u7d9a\u3057\u306a\u304c\u3089\u96fb\u8a71\u756a\u53f7\u3092\u4f7f\u3044\u7d9a\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u30022026\u5e74\u306b\u30a4\u30ae\u30ea\u30b9\u306e\u30dc\u30fc\u30c0\u30d5\u30a9\u30f3\u306e\u5951\u7d04\u8005\u3068\u3057\u3066\u30b9\u30da\u30a4\u30f3\u306b\u5230\u7740\u3059\u308b\u3053\u3068\u3092\u60f3\u50cf\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u3042\u306a\u305f\u306e\u30e2\u30d0\u30a4\u30eb\u30c7\u30d0\u30a4\u30b9\u306f\u81ea\u52d5\u7684\u306b\u30aa\u30ec\u30f3\u30b8\u30fb\u30a8\u30b9\u30d1\u30fc\u30cb\u30e3\u3092\u691c\u51fa\u3057\u3001\u3042\u306a\u305f\u306e\u6bcd\u56fd\u306e\u901a\u4fe1\u4e8b\u696d\u8005\u3092\u901a\u3058\u3066\u8a8d\u8a3c\u3055\u308c\u3001E\u30e1\u30fc\u30eb\u306e\u30c1\u30a7\u30c3\u30af\u3001\u97f3\u58f0\u901a\u8a71\u3001\u304a\u3088\u3073\u643a\u5e2f\u96fb\u8a71\u306e\u4f7f\u7528\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002 <a href=\"https:\/\/blog.lebara.co.uk\/ja\/%ef%bf%bchow-much-data-is-optimal\/\">\u30e2\u30d0\u30a4\u30eb\u30c7\u30fc\u30bf<\/a> \u30b9\u30ef\u30c3\u30d7\u306a\u3057 <a href=\"https:\/\/blog.lebara.co.uk\/ja\/a-beginners-guide-to-sim-cards\/\">SIM\u30ab\u30fc\u30c9<\/a>.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u30c8\u30b0\u30eb\u76ee\u6b21\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u30c8\u30b0\u30eb<\/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><\/span><\/a><\/span><\/div>\n<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:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#Core_Concepts_Home_Network_Visited_Network_and_Roaming_Agreements\" >\u30b3\u30a2\u30b3\u30f3\u30bb\u30d7\u30c8\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u8a2a\u554f\u5148\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u5951\u7d04<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#Device_and_Radio_Layer_How_Your_Phone_Finds_and_Joins_a_Visited_Network\" >\u30c7\u30d0\u30a4\u30b9\u3068\u7121\u7dda\u30ec\u30a4\u30e4\u30fc\uff1a\u96fb\u8a71\u6a5f\u304c\u8a2a\u554f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u898b\u3064\u3051\u3001\u53c2\u52a0\u3059\u308b\u65b9\u6cd5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#Subscriber_Authentication_and_Security_How_the_Networks_Verify_You\" >\u52a0\u5165\u8005\u8a8d\u8a3c\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3069\u306e\u3088\u3046\u306b\u3042\u306a\u305f\u3092\u8a8d\u8a3c\u3059\u308b\u304b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#Mobility_Management_and_Location_Updates\" >\u30e2\u30d3\u30ea\u30c6\u30a3\u7ba1\u7406\u3068\u4f4d\u7f6e\u60c5\u5831\u306e\u66f4\u65b0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#Call_and_SMS_Routing_While_Roaming\" >\u30ed\u30fc\u30df\u30f3\u30b0\u4e2d\u306e\u901a\u8a71\u3068SMS\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#Data_Roaming_PDP_Contexts_APNs_and_Tunnels\" >\u30c7\u30fc\u30bf\u30ed\u30fc\u30df\u30f3\u30b0\uff1aPDP\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3001APN\u3001\u30c8\u30f3\u30cd\u30eb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#Inter-Standard_Roaming_and_Legacy_Technologies\" >\u898f\u683c\u9593\u30ed\u30fc\u30df\u30f3\u30b0\u3068\u30ec\u30ac\u30b7\u30fc\u6280\u8853<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#Roaming_Billing_Charging_Records_and_Settlement\" >\u30ed\u30fc\u30df\u30f3\u30b0\u8ab2\u91d1\u3001\u8ab2\u91d1\u8a18\u9332\u3001\u6c7a\u6e08<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#Regulation_Policy_Control_and_Roaming_Restrictions\" >\u898f\u5236\u3001\u30dd\u30ea\u30b7\u30fc\u30fb\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u898f\u5236<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#eSIM_Multi-IMSI_and_the_Future_of_Roaming\" >eSIM\u3001\u30de\u30eb\u30c1IMSI\u3068\u30ed\u30fc\u30df\u30f3\u30b0\u306e\u672a\u6765<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/#Summary_Putting_the_Technical_Pieces_Together\" >\u8981\u7d04\uff1a\u6280\u8853\u7684\u306a\u30d4\u30fc\u30b9\u3092\u7d44\u307f\u5408\u308f\u305b\u308b<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Core_Concepts_Home_Network_Visited_Network_and_Roaming_Agreements\"><\/span>\u30b3\u30a2\u30b3\u30f3\u30bb\u30d7\u30c8\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u8a2a\u554f\u5148\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u5951\u7d04<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u3054\u81ea\u5b85\u306ePLMN\uff08Public Land Mobile Network\uff09\u3068\u306f\u3001\u4f8b\u3048\u3070Vodafone UK\u306e\u3088\u3046\u306b\u3001\u6700\u521d\u306b\u5951\u7d04\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e8b\u696d\u8005\u306e\u3053\u3068\u3067\u3059\u3002\u65c5\u884c\u6642 <a href=\"https:\/\/blog.lebara.co.uk\/ja\/using-data-abroad-what-you-need-to-know\/\">\u6d77\u5916<\/a>, \u3053\u306e\u5834\u5408\u3001\u63a5\u7d9a\u5148\u306e\u30ed\u30fc\u30ab\u30eb\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3001Orange Espa\u00f1a\u306e\u3088\u3046\u306a\u8a2a\u554f\u5148\u306ePLMN\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u56fd\u969b\u30ed\u30fc\u30df\u30f3\u30b0\u306f\u3001\u4e8b\u696d\u8005\u304c\u6280\u8853\u7684\u306a\u76f8\u4e92\u63a5\u7d9a\u306e\u8a73\u7d30\u3068\u5378\u58f2\u308a\u6599\u91d1\u3092\u660e\u8a18\u3057\u305f\u30ed\u30fc\u30df\u30f3\u30b0\u5354\u5b9a\u3092\u7d50\u3076\u3053\u3068\u306b\u3088\u3063\u3066\u521d\u3081\u3066\u6a5f\u80fd\u3059\u308b\u3002\u3053\u308c\u3089\u306e\u5951\u7d04\u306f\u3001\u8ab2\u91d1\u4ea4\u63db\u306e\u305f\u3081\u306eTAP\uff08Transferred Account Procedure\uff09\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u6a19\u6e96\u5316\u3059\u308bGSMA\u306e\u3088\u3046\u306a\u56e3\u4f53\u304c\u7dad\u6301\u3059\u308b\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u67a0\u7d44\u307f\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u3002.<\/p>\n\n\n\n<p>\u4e3b\u8981\u306a\u4e8b\u696d\u4f53\u306e\u95a2\u4fc2\u306f\u3053\u3046\u3060\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff1a\u52a0\u5165\u5951\u7d04\u3092\u6240\u6709\u3057\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08HLR\/HSS\/UDM\uff09\u3067\u30de\u30b9\u30bf\u30fc\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u7dad\u6301\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u8a2a\u554f\u5148\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff1a\u30ed\u30fc\u30ab\u30eb\u7121\u7dda\u30a4\u30f3\u30d5\u30e9\u3092\u63d0\u4f9b\u3057\u3001\u304a\u5ba2\u69d8\u306e\u63a5\u7d9a\u3092\u4e00\u6642\u7684\u306b\u30db\u30b9\u30c8\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30ed\u30fc\u30df\u30f3\u30b0\u30fb\u30d1\u30fc\u30c8\u30ca\u30fc\uff1a\u81ea\u56fd\u306e\u901a\u4fe1\u4e8b\u696d\u8005\u306e\u52a0\u5165\u8005\u304c\u63a5\u7d9a\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u5951\u7d04\u3092\u7d50\u3093\u3060\u5916\u56fd\u306e\u901a\u4fe1\u4e8b\u696d\u8005<\/li>\n<\/ul>\n\n\n\n<p>\u30b5\u30fc\u30d3\u30b9\u8a31\u53ef\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u8a31\u53ef\u3001\u30af\u30ec\u30b8\u30c3\u30c8\u30b9\u30c6\u30fc\u30bf\u30b9\u306a\u3069\u306e\u52a0\u5165\u8005\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u6c38\u7d9a\u7684\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002\u8a2a\u554f\u5148\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u63a5\u7d9a\u4e2d\u306e\u4e00\u6642\u7684\u306a\u8a18\u9332\u306e\u307f\u304c\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Device_and_Radio_Layer_How_Your_Phone_Finds_and_Joins_a_Visited_Network\"><\/span>\u30c7\u30d0\u30a4\u30b9\u3068\u7121\u7dda\u30ec\u30a4\u30e4\u30fc\uff1a\u96fb\u8a71\u6a5f\u304c\u8a2a\u554f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u898b\u3064\u3051\u3001\u53c2\u52a0\u3059\u308b\u65b9\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6d77\u5916\u3067\u643a\u5e2f\u96fb\u8a71\u306e\u96fb\u6e90\u3092\u5165\u308c\u308b\u3068\u3001\u653e\u9001\u4fe1\u53f7\u3092\u8aad\u307f\u53d6\u3063\u3066\u5229\u7528\u53ef\u80fd\u306a\u901a\u4fe1\u4e8b\u696d\u8005\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u307e\u3059\u3002\u30c7\u30d0\u30a4\u30b9\u306fPLMN ID\u3092SIM\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u512a\u5148\u30ed\u30fc\u30df\u30f3\u30b0\u30ea\u30b9\u30c8\u3068\u7167\u5408\u3057\u3001\u8a31\u53ef\u3055\u308c\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u7279\u5b9a\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p>SIM\/USIM\u306b\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u9078\u629e\u3092\u5de6\u53f3\u3059\u308b\u91cd\u8981\u306a\u30c7\u30fc\u30bf\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IMSI\uff08\u56fd\u969b\u79fb\u52d5\u4f53\u52a0\u5165\u8005\u8b58\u5225\u756a\u53f7\uff09\u306b\u3088\u308b\u4e00\u610f\u306e\u8b58\u5225<\/li>\n\n\n\n<li>\u8a2a\u554f\u3092\u8a31\u53ef\u3055\u308c\u305f\u30aa\u30da\u30ec\u30fc\u30bf\u3092\u6307\u5b9a\u3059\u308b\u512a\u5148\u30ed\u30fc\u30df\u30f3\u30b0\u30ea\u30b9\u30c8<\/li>\n\n\n\n<li>\u8a8d\u8a3c\u7528\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fb\u30ad\u30fc\uff08Ki, K\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u643a\u5e2f\u96fb\u8a71\u306f\u3001\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u5468\u6ce2\u6570\u5e2f\u57df\uff08\u30e8\u30fc\u30ed\u30c3\u30d1\u3067\u306f800 MHz\u30011800 MHz\u30012600 MHz\u304c\u4e00\u822c\u7684\uff09\u3067\u30bb\u30eb\u9078\u629e\u3092\u884c\u3044\u3001\u30b7\u30b9\u30c6\u30e0\u60c5\u5831\u3092\u8aad\u307f\u53d6\u3063\u3066\u30ed\u30fc\u30df\u30f3\u30b0\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002\u73fe\u5728\u3001\u307b\u3068\u3093\u3069\u306e\u7aef\u672b\u306f\u8907\u6570\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\uff1aGSM\/EDGE\u3001UMTS\u3001LTE\u3001\u305d\u3057\u3066 <a href=\"https:\/\/blog.lebara.co.uk\/ja\/which-iphones-support-5g\/\">5G<\/a> NR\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u63a5\u7d9a\u3092\u53ef\u80fd\u306b\u3059\u308b\u3002.<\/p>\n\n\n\n<p>\u8e0a\u308a\u5834\u304b\u3089\u30b3\u30cd\u30af\u30c6\u30a3\u30f3\u30b0\u3078\u306e\u968e\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u96fb\u8a71\u304c\u5229\u7528\u53ef\u80fd\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u3001PLMN ID\u3092\u8aad\u307f\u53d6\u308b<\/li>\n\n\n\n<li>\u30c7\u30d0\u30a4\u30b9\u304c\u691c\u51fa\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092SIM\u306e\u30ed\u30fc\u30df\u30f3\u30b0\u30ea\u30b9\u30c8\u3068\u7167\u5408\u3059\u308b<\/li>\n\n\n\n<li>\u96fb\u8a71\u6a5f\u306f\u6700\u512a\u5148\u3067\u8a31\u5bb9\u3055\u308c\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u9078\u629e\u3059\u308b<\/li>\n\n\n\n<li>\u30c7\u30d0\u30a4\u30b9\u304c\u8a2a\u554f\u5148\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u767b\u9332\u8981\u6c42\u3092\u9001\u4fe1<\/li>\n\n\n\n<li>\u8a2a\u554f\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u8a8d\u8a3c\u306e\u305f\u3081\u306b\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u554f\u3044\u5408\u308f\u305b\u308b<\/li>\n<\/ul>\n\n\n\n<p>\u304a\u4f4f\u307e\u3044\u306e\u901a\u4fe1\u4e8b\u696d\u8005\u3068\u30ed\u30fc\u30ab\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u306e\u9593\u306b\u30ed\u30fc\u30df\u30f3\u30b0\u5951\u7d04\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u3001\u7121\u7dda\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u30c7\u30d0\u30a4\u30b9\u306f\u300cNo Service\u300d\u3068\u8868\u793a\u3055\u308c\u307e\u3059\u3002 <a href=\"https:\/\/blog.lebara.co.uk\/ja\/boosting-your-mobile-signal-tips-for-improving-reception\/\">\u30b7\u30b0\u30ca\u30eb<\/a> \u7acb\u3061\u4f1a\u3044.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Subscriber_Authentication_and_Security_How_the_Networks_Verify_You\"><\/span>\u52a0\u5165\u8005\u8a8d\u8a3c\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3069\u306e\u3088\u3046\u306b\u3042\u306a\u305f\u3092\u8a8d\u8a3c\u3059\u308b\u304b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u8a2a\u554f\u5148\u306e\u643a\u5e2f\u96fb\u8a71\u306b\u63a5\u7d9a\u3055\u308c\u308b\u3068\u3001\u8a2a\u554f\u5148\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3042\u306a\u305f\u306eSIM\u3092\u8b58\u5225\u3057\u3001\u305d\u308c\u304c\u672c\u7269\u3067\u3042\u308a\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u30db\u30fc\u30e0\u30aa\u30da\u30ec\u30fc\u30bf\u30fc\u306b\u78ba\u8a8d\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4e0d\u6b63\u4f7f\u7528\u304c\u9632\u6b62\u3055\u308c\u3001\u9069\u5207\u306a\u8acb\u6c42\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u3002.<\/p>\n\n\n\n<p>\u8a8d\u8a3c\u30d7\u30ed\u30bb\u30b9\u306f\u3001AKA\uff08Authentication and Key Agreement\uff09\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u5f93\u3046\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8a2a\u554f\u5148\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u3042\u306a\u305f\u306eIMSI\u3092\u62bd\u51fa\u3057\u3001\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u9001\u4fe1\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30db\u30fc\u30e0 HLR\/HSS \u306f\u30e9\u30f3\u30c0\u30e0\u306a\u30c1\u30e3\u30ec\u30f3\u30b8\u3092\u542b\u3080\u8a8d\u8a3c\u30d9\u30af\u30bf\u30fc\u3092\u751f\u6210\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30c1\u30e3\u30ec\u30f3\u30b8\u306f\u3042\u306a\u305f\u306e\u30c7\u30d0\u30a4\u30b9\u306b\u9001\u4fe1\u3055\u308c\u3001\u30c7\u30d0\u30a4\u30b9\u306fSIM\u306b\u306e\u307f\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u79d8\u5bc6\u9375\u3092\u4f7f\u3063\u3066\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8a08\u7b97\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u30db\u30fc\u30e0\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u671f\u5f85\u3059\u308b\u3082\u306e\u3068\u4e00\u81f4\u3059\u308c\u3070\u3001\u8a8d\u8a3c\u306f\u6210\u529f\u3059\u308b\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u8a8d\u8a3c\u6642\u306b\u4ea4\u63db\u3055\u308c\u308b\u30c7\u30fc\u30bf\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IMSI\uff08\u52a0\u5165\u8005ID\uff09<\/li>\n\n\n\n<li>\u30db\u30fc\u30e0AuC\uff08\u8a8d\u8a3c\u30bb\u30f3\u30bf\u30fc\uff09\u304b\u3089\u306e\u8a8d\u8a3c\u30d9\u30af\u30bf\u30fc<\/li>\n\n\n\n<li>\u30c1\u30e3\u30ec\u30f3\u30b8\u30fb\u30ec\u30b9\u30dd\u30f3\u30b9\u5024<\/li>\n\n\n\n<li>\u30ed\u30fc\u30df\u30f3\u30b0\u8a31\u53ef\u72b6\u6cc1\u3068\u7981\u6b62\u6761\u4ef6<\/li>\n\n\n\n<li>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u6697\u53f7\u5316\u3059\u308b\u305f\u3081\u306e\u6697\u53f7\u30ad\u30fc\u3068\u5b8c\u5168\u6027\u30ad\u30fc<\/li>\n<\/ul>\n\n\n\n<p>\u79d8\u5bc6\u9375\u306fSIM\u3084\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304b\u3089\u96e2\u308c\u308b\u3053\u3068\u304c\u306a\u3044\u305f\u3081\u3001\u8a2a\u554f\u5148\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30d5\u30e9\u304c\u4fb5\u5bb3\u3055\u308c\u305f\u5834\u5408\u3067\u3082\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u78ba\u4fdd\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u6d3e\u751f\u30ad\u30fc\u306f\u3001\u643a\u5e2f\u96fb\u8a71\u3068\u8a2a\u554f\u5148\u306e\u57fa\u5730\u5c40\u9593\u306e\u30e6\u30fc\u30b6\u30fc\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3068\u30b7\u30b0\u30ca\u30ea\u30f3\u30b0\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mobility_Management_and_Location_Updates\"><\/span>\u30e2\u30d3\u30ea\u30c6\u30a3\u7ba1\u7406\u3068\u4f4d\u7f6e\u60c5\u5831\u306e\u66f4\u65b0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30e2\u30d0\u30a4\u30eb\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u4e2d\u306b\u901a\u8a71\u3001SMS\u30e1\u30c3\u30bb\u30fc\u30b8\u3001\u30c7\u30fc\u30bf\u30fb\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u914d\u4fe1\u3059\u308b\u305f\u3081\u306b\u3001\u3042\u306a\u305f\u304c\u3069\u3053\u306b\u3044\u308b\u304b\u3092\u5e38\u306b\u304a\u304a\u3088\u305d\u628a\u63e1\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u3053\u306e\u8ffd\u8de1\u304c\u306a\u3051\u308c\u3070\u3001\u7740\u4fe1\u3057\u305f\u901a\u4fe1\u306f\u5b9b\u5148\u3092\u6301\u305f\u306a\u3044\u3053\u3068\u306b\u306a\u308b\u3002.<\/p>\n\n\n\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u30ab\u30d0\u30ec\u30c3\u30b8\u3092\u968e\u5c64\u7684\u306a\u30be\u30fc\u30f3\u306b\u7de8\u6210\u3059\u308b\uff1a2G\u3067\u306f\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u30fb\u30a8\u30ea\u30a2\uff08LA\uff09\u30013G\u30d1\u30b1\u30c3\u30c8\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30fb\u30a8\u30ea\u30a2\uff08RA\uff09\u3001LTE\/5G\u3067\u306f\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u30fb\u30a8\u30ea\u30a2\uff08TA\uff09\u3067\u3042\u308b\u3002\u30d1\u30eaCDG\u7a7a\u6e2f\u304b\u3089\u5e02\u5185\u4e2d\u5fc3\u90e8\u3078\u79fb\u52d5\u3059\u308b\u969b\u3001\u30be\u30fc\u30f3\u306e\u5883\u754c\u3092\u8d8a\u3048\u308b\u3053\u3068\u304c\u4f4d\u7f6e\u60c5\u5831\u306e\u66f4\u65b0\u306e\u30c8\u30ea\u30ac\u30fc\u3068\u306a\u308b\u3002.<\/p>\n\n\n\n<p>\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u66f4\u65b0\u30d7\u30ed\u30bb\u30b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30d0\u30a4\u30b9\u304c\u65b0\u3057\u3044\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u30a8\u30ea\u30a2\u3078\u306e\u9032\u5165\u3092\u691c\u77e5\u3059\u308b<\/li>\n\n\n\n<li>\u96fb\u8a71\u6a5f\u304c\u8a2a\u554f\u5148\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b3\u30a2\u306b\u4f4d\u7f6e\u66f4\u65b0\u8981\u6c42\u3092\u9001\u4fe1<\/li>\n\n\n\n<li>\u8a2a\u554f\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u30ed\u30fc\u30ab\u30eb\u30ec\u30b3\u30fc\u30c9\u3092\u66f4\u65b0\uff08VLR\/MME\/AMF\uff09<\/li>\n\n\n\n<li>\u8a2a\u554f\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3001\u30db\u30fc\u30e0 HLR\/HSS \u306b\u65b0\u3057\u3044\u30b5\u30fc\u30d3\u30f3\u30b0\u30ce\u30fc\u30c9\u306e\u4f4d\u7f6e\u3092\u901a\u77e5\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u73fe\u5728\u4f4d\u7f6e\u3092\u8a8d\u8b58\u3057\u8a18\u9332<\/li>\n<\/ul>\n\n\n\n<p>\u8ab0\u304b\u304c\u3042\u306a\u305f\u306e\u96fb\u8a71\u756a\u53f7\u306b\u96fb\u8a71\u3092\u304b\u3051\u305f\u308a\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u3063\u305f\u308a\u3059\u308b\u3068\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u6700\u5f8c\u306b\u78ba\u8a8d\u3055\u308c\u305f\u8ffd\u8de1\u30a8\u30ea\u30a2\u306b\u3042\u308b\u3042\u306a\u305f\u306e\u30c7\u30d0\u30a4\u30b9\u3092\u30da\u30fc\u30b8\u30f3\u30b0\u3057\u307e\u3059\u3002\u3042\u306a\u305f\u306e\u96fb\u8a71\u306f\u5fdc\u7b54\u3057\u3001\u63a5\u7d9a\u304c\u78ba\u7acb\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Call_and_SMS_Routing_While_Roaming\"><\/span>\u30ed\u30fc\u30df\u30f3\u30b0\u4e2d\u306e\u901a\u8a71\u3068SMS\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30fb\u30ed\u30b8\u30c3\u30af\u306f\u3001\u767a\u4fe1\u3068\u7740\u4fe1\u3067\u5927\u304d\u304f\u7570\u306a\u308b\u3002\u30e2\u30d0\u30a4\u30eb\u767a\u306e\u901a\u8a71\u3068SMS-MO\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u7740\u4fe1\u306e\u901a\u8a71\u3068SMS-MT\u3068\u306f\u6d41\u308c\u304c\u7570\u306a\u308b\u3002.<\/p>\n\n\n\n<p>\u30ed\u30fc\u30df\u30f3\u30b0\u4e2d\u306e\u643a\u5e2f\u96fb\u8a71\u767a\u4fe1\u901a\u8a71\u3067\u306f\u3001E.164\u756a\u53f7\uff08+44 20...\u306a\u3069\uff09\u3092\u30c0\u30a4\u30e4\u30eb\u3057\u307e\u3059\u3002\u8a2a\u554f\u5148\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306eMSC\u307e\u305f\u306fIMS\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u304c\u6570\u5b57\u3092\u5206\u6790\u3057\u3001\u8a2a\u554f\u56fd\u5185\u3067\u901a\u8a71\u3092\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u304b\u3001\u76ee\u7684\u5730\u307e\u3067\u56fd\u969b\u7684\u306b\u901a\u8a71\u3092\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u6d77\u5916\u3067\u96fb\u8a71\u3092\u53d7\u3051\u308b\u5834\u5408\u3001\u624b\u7d9a\u304d\u306f\u3088\u308a\u8907\u96d1\u306b\u306a\u308b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u767a\u4fe1\u8005\u304c\u3042\u306a\u305f\u306eMSISDN\uff08\u5143\u306e\u96fb\u8a71\u756a\u53f7\uff09\u306b\u30c0\u30a4\u30e4\u30eb\u3059\u308b<\/li>\n\n\n\n<li>\u901a\u8a71\u304c\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306b\u5230\u9054 MSC<\/li>\n\n\n\n<li>\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304cHLR\u306b\u73fe\u5728\u306e\u30ed\u30fc\u30df\u30f3\u30b0\u4f4d\u7f6e\u3092\u554f\u3044\u5408\u308f\u305b\u308b<\/li>\n\n\n\n<li>HLR \u306f\u4e00\u6642\u7684\u306a MSRN\uff08\u79fb\u52d5\u5c40\u30ed\u30fc\u30df\u30f3\u30b0\u756a\u53f7\uff09\u3092\u8fd4\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u901a\u8a71\u306f\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u8a2a\u554f\u5148\u306eMSC\u306b\u518d\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3055\u308c\u308b\u3002<\/li>\n\n\n\n<li>\u8a2a\u554f\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3001\u3042\u306a\u305f\u306e\u30c7\u30d0\u30a4\u30b9\u3092\u30da\u30fc\u30b8\u30f3\u30b0\u3057\u3001\u30b3\u30fc\u30eb\u3092\u914d\u4fe1\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6700\u65b0\u306eVoLTE\u304a\u3088\u3073VoNR\u3067\u306f\u3001\u7121\u7dda\u30a2\u30af\u30bb\u30b9\u304c\u8a2a\u554f\u5148\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u7d4c\u7531\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u97f3\u58f0\u901a\u8a71\u304c\u30db\u30fc\u30e0IMS\u30b3\u30a2\u306b\u30a2\u30f3\u30ab\u30fc\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u54c1\u8cea\u304c\u5411\u4e0a\u3057\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u7c21\u7d20\u5316\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<p>SMS \u3067\u306f\u3001\u30db\u30fc\u30e0\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e SMSC \u304c\u5e38\u306b\u30a2\u30f3\u30ab\u30fc\u30fb\u30dd\u30a4\u30f3\u30c8\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002\u30b7\u30b0\u30ca\u30ea\u30f3\u30b0\u30fb\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001\u30db\u30fc\u30e0\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u8a2a\u554f\u5148\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u9593\u3067\u3001MAP over SS7\u307e\u305f\u306fDiameter\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3057\u3066\u6d41\u308c\u3001\u5834\u6240\u306b\u95a2\u4fc2\u306a\u304f\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u914d\u4fe1\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Data_Roaming_PDP_Contexts_APNs_and_Tunnels\"><\/span>\u30c7\u30fc\u30bf\u30ed\u30fc\u30df\u30f3\u30b0\uff1aPDP\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3001APN\u3001\u30c8\u30f3\u30cd\u30eb<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/blog.lebara.co.uk\/ja\/a-guide-to-data-roaming\/\">\u30c7\u30fc\u30bf\u30ed\u30fc\u30df\u30f3\u30b0<\/a> \u304c\u8907\u96d1\u3055\u3092\u5897\u3059\u3002 <a href=\"https:\/\/blog.lebara.co.uk\/ja\/ip-ratings-explained-how-your-smartphone-can-withstand-water-and-dust\/\">IP<\/a> \u7121\u7dda\u30a2\u30af\u30bb\u30b9\u304c\u30ea\u30e2\u30fc\u30c8\u3067\u3042\u308b\u9593\u306f\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u3069\u3053\u304b\u306b\u56fa\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u304a\u4f7f\u3044\u306e\u30c7\u30d0\u30a4\u30b9\u307e\u305f\u306fSIM\u306b\u306f\u3001\u30c7\u30fc\u30bf\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u65b9\u6cd5\u3092\u6c7a\u5b9a\u3059\u308bAPN\uff08\u30a2\u30af\u30bb\u30b9\u30dd\u30a4\u30f3\u30c8\u540d\uff09\u8a2d\u5b9a\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u8a2a\u554f\u5148\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3001APN\u3092\u4f7f\u7528\u3057\u3066\u3001\u8a2a\u554f\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u5b9a\u3059\u308b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u81ea\u5b85\u306ePGW\/UPF\u306b\u623b\u308b\u30db\u30fc\u30e0\u30eb\u30fc\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\uff08\u6700\u3082\u4e00\u822c\u7684\u306a\u3082\u306e\uff09<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u304c\u30ed\u30fc\u30ab\u30eb\u306b\u51fa\u308b\u5834\u5408\u3001\u30ed\u30fc\u30ab\u30eb\u30fb\u30d6\u30ec\u30a4\u30af\u30a2\u30a6\u30c8\u3092\u63d0\u4f9b\u3059\u308b\uff08EU\u306e\u4e00\u90e8\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u4f7f\u7528\uff09<\/li>\n<\/ul>\n\n\n\n<p>2G\/3G\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u30c7\u30fc\u30bf\u306e\u30a2\u30af\u30c6\u30a3\u30d6\u5316\u306b\u306fPDP\uff08Packet Data Protocol\uff09\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u78ba\u7acb\u304c\u5fc5\u8981\u3067\u3057\u305f\u30024G\/5G\u3067\u306f\u3001\u8a2a\u554f\u5148\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u30db\u30fc\u30e0\u30fb\u30a4\u30f3\u30d5\u30e9\u3068\u8abf\u6574\u3057\u306a\u304c\u3089\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30fb\u30d9\u30a2\u30e9\u307e\u305f\u306fPDU\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u78ba\u7acb\u3059\u308b\u3088\u3046\u306b\u9032\u5316\u3057\u307e\u3057\u305f\u3002.<\/p>\n\n\n\n<p>\u30ed\u30fc\u30df\u30f3\u30b0\u30c7\u30fc\u30bf\u306e\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u30d1\u30b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u96fb\u8a71\u6a5f\u306f\u8a2a\u554f\u5148\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u7121\u7dda\u30a2\u30af\u30bb\u30b9\u7d4c\u7531\u3067\u30d1\u30b1\u30c3\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30d1\u30b1\u30c3\u30c8\u306f\u8a2a\u554f\u5148\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30b3\u30a2\uff08SGSN\/MME\/AMF\uff09\u306b\u5230\u9054\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306fGTP\u30c8\u30f3\u30cd\u30eb\u3067\u30ab\u30d7\u30bb\u30eb\u5316\u3055\u308c\u308b<\/li>\n\n\n\n<li>\u30c8\u30f3\u30cd\u30eb\u306f\u56fd\u969b\u7684\u306aGRX\u307e\u305f\u306fIPX\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u6a2a\u65ad\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30d1\u30b1\u30c3\u30c8\u306f\u30db\u30fc\u30e0\u30c7\u30fc\u30bf\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\uff08GGSN\/PGW\/UPF\uff09\u3067\u7d42\u4e86\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u8ee2\u9001\u3059\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u304b\u3089\u898b\u308b\u3068\u3001\u3042\u306a\u305f\u306f\u3057\u3070\u3057\u3070\u81ea\u56fd\u306eIP\u7a7a\u9593\u306b\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u3001\u30b8\u30aa\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u30fb\u30b5\u30fc\u30d3\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Inter-Standard_Roaming_and_Legacy_Technologies\"><\/span>\u898f\u683c\u9593\u30ed\u30fc\u30df\u30f3\u30b0\u3068\u30ec\u30ac\u30b7\u30fc\u6280\u8853<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6b74\u53f2\u7684\u306b\u3001\u30e2\u30d0\u30a4\u30eb\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u7570\u306a\u308b\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3092\u4f7f\u3063\u3066\u3044\u305f\u3002\u30e8\u30fc\u30ed\u30c3\u30d1\u3067\u306fGSM\u304c\u4e3b\u6d41\u3067\u3042\u3063\u305f\u304c\u3001\u5317\u7c73\u3067\u306fCDMA\u304c\u4e3b\u6d41\u3067\u3042\u3063\u305f\u3002\u898f\u683c\u9593\u30ed\u30fc\u30df\u30f3\u30b0\u306b\u306f\u3001\u30de\u30eb\u30c1\u30e2\u30fc\u30c9\u643a\u5e2f\u96fb\u8a71\u3068\u3001\u3053\u308c\u3089\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u6a4b\u6e21\u3057\u3092\u3059\u308b\u30ed\u30fc\u30df\u30f3\u30b0\u5c02\u7528\u30cf\u30d6\u304c\u5fc5\u8981\u3060\u3063\u305f\u3002.<\/p>\n\n\n\n<p>\u4eca\u65e5\u3001\u696d\u754c\u306f3GPP\u6a19\u6e96\uff08GSM\/UMTS\/LTE\/5G NR\uff09\u3092\u4e2d\u5fc3\u306b\u7d71\u5408\u3055\u308c\u3001\u4e92\u63db\u6027\u304c\u5287\u7684\u306b\u7c21\u7d20\u5316\u3055\u308c\u305f\u30022025\u5e74\u304b\u30892030\u5e74\u306b\u304b\u3051\u30662G\/3G\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u505c\u6b62\u3059\u308b\u305f\u3081\u3001\u591a\u304f\u306e\u5e02\u5834\u3067VoLTE\u6a5f\u80fd\u306f\u97f3\u58f0\u901a\u8a71\u306b\u5fc5\u9808\u3068\u306a\u308b\u3002.<\/p>\n\n\n\n<p>2026\u5e74\u3001\u56fd\u969b\u30ed\u30fc\u30df\u30f3\u30b0\u306b\u5bfe\u5fdc\u3057\u305f\u30c7\u30d0\u30a4\u30b9\u3068\u306f\uff1f<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8907\u6570\u306e\u5730\u57df\u306b\u307e\u305f\u304c\u308bLTE\u30d0\u30f3\u30c9\uff08\u30d0\u30f3\u30c91\u30014\u30017\u306a\u3069\uff09<\/li>\n\n\n\n<li>5G NR\u30d0\u30f3\u30c9\uff08n78\u3001n79\u3001n1\uff09<\/li>\n\n\n\n<li>\u97f3\u58f0\u901a\u8a71\u306e\u305f\u3081\u306eVoLTE\u6a5f\u80fd<\/li>\n\n\n\n<li><a href=\"https:\/\/blog.lebara.co.uk\/ja\/%ef%bf%bca-guide-to-sim-card-sizes\/\">\u30a4\u30fc\u30b7\u30e0<\/a> \u67d4\u8edf\u306a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u5207\u308a\u66ff\u3048\u306e\u30b5\u30dd\u30fc\u30c8<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Roaming_Billing_Charging_Records_and_Settlement\"><\/span>\u30ed\u30fc\u30df\u30f3\u30b0\u8ab2\u91d1\u3001\u8ab2\u91d1\u8a18\u9332\u3001\u6c7a\u6e08<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u8a2a\u554f\u5148\u306e\u901a\u4fe1\u4e8b\u696d\u8005\u306f\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u304c\u3001\u81ea\u5b85\u306e\u901a\u4fe1\u4e8b\u696d\u8005\u306b\u6599\u91d1\u3092\u8acb\u6c42\u3059\u308b\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u8a73\u7d30\u306a\u5229\u7528\u8a18\u9332\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u3002.<\/p>\n\n\n\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3001\u4ee5\u4e0b\u3092\u542b\u3080\u30c1\u30e3\u30fc\u30b8\u30f3\u30b0\u30fb\u30c7\u30fc\u30bf\u30fb\u30ec\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3059\u308b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IMSI\u304a\u3088\u3073MSISDN\uff08\u52a0\u5165\u8005\u8b58\u5225\u5b50\uff09<\/li>\n\n\n\n<li>\u30b5\u30fc\u30d3\u30b9\u30bf\u30a4\u30d7\u3001\u5b9b\u5148\u3001\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3001\u671f\u9593\/\u30dc\u30ea\u30e5\u30fc\u30e0<\/li>\n\n\n\n<li>\u8a2a\u554f\u3057\u305fPLMN\u8b58\u5225\u5b50\u3068\u30bb\u30ebID<\/li>\n\n\n\n<li>\u9069\u7528\u5378\u58f2\u6599\u91d1<\/li>\n<\/ul>\n\n\n\n<p>TAP\u30d5\u30a1\u30a4\u30eb\u306f\u3053\u308c\u3089\u306e\u8a18\u9332\u3092\u96c6\u7d04\u3057\u305f\u3082\u306e\u3067\u3001\u5b9a\u671f\u7684\u306b\uff08\u901a\u5e38\u306f\u6bce\u65e5\uff09\u8a2a\u554f\u5148\u306e\u901a\u4fe1\u4e8b\u696d\u8005\u304b\u3089\u30db\u30fc\u30e0\u306e\u901a\u4fe1\u4e8b\u696d\u8005\u306b\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002\u30db\u30fc\u30e0\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8ab2\u91d1\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u30c7\u30fc\u30bf\u901a\u4fe1\u6599\u8fbc\u307f\u306e\u30ed\u30fc\u30df\u30f3\u30b0\u30d7\u30e9\u30f3\u3067\u3042\u308c\u3001\u5f93\u91cf\u8ab2\u91d1\u5236\u306e\u30ed\u30fc\u30df\u30f3\u30b0\u6599\u91d1\u3067\u3042\u308c\u3001\u304a\u5ba2\u69d8\u56fa\u6709\u306e\u6599\u91d1\u8a2d\u5b9a\u3092\u9069\u7528\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u30ed\u30fc\u30df\u30f3\u30b0\u30a4\u30d9\u30f3\u30c8\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b5\u30fc\u30d3\u30b9\uff08\u901a\u8a71\u3001SMS\u3001\u30c7\u30fc\u30bf\uff09\u3092\u5229\u7528\u3059\u308b<\/li>\n\n\n\n<li>\u8a2a\u554f\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304cCDR\/\u5229\u7528\u8a18\u9332\u3092\u751f\u6210<\/li>\n\n\n\n<li>\u8a18\u9332\u306fTAP\u30d5\u30a1\u30a4\u30eb\u306b\u307e\u3068\u3081\u3089\u308c\u308b<\/li>\n\n\n\n<li>TAP\u30d5\u30a1\u30a4\u30eb\u3092\u30db\u30fc\u30e0\u30aa\u30da\u30ec\u30fc\u30bf\u30fc\u306b\u9001\u4fe1<\/li>\n\n\n\n<li>\u30db\u30fc\u30e0\u30d3\u30ea\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306b\u3088\u308b\u4fa1\u683c\u8a2d\u5b9a\u3068\u8acb\u6c42\u66f8\u3078\u306e\u8ffd\u52a0<\/li>\n<\/ul>\n\n\n\n<p>\u898f\u5236\u306e\u67a0\u7d44\u307f\u306f\u30ed\u30fc\u30df\u30f3\u30b0\u6599\u91d1\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3002EU\u306e \u201cRoam Like at Home \u201d\u898f\u5236\u306f2017\u5e746\u6708\u304b\u3089\u65bd\u884c\u3055\u308c\u30012032\u5e74\u307e\u3067\u5ef6\u9577\u3055\u308c\u308b\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Regulation_Policy_Control_and_Roaming_Restrictions\"><\/span>\u898f\u5236\u3001\u30dd\u30ea\u30b7\u30fc\u30fb\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u898f\u5236<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6280\u8853\u3060\u3051\u3067\u306a\u304f\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u306f\u898f\u5236\u3084\u30aa\u30da\u30ec\u30fc\u30bf\u30fc\u306e\u30dd\u30ea\u30b7\u30fc\u306b\u3088\u3063\u3066\u5f62\u4f5c\u3089\u308c\u308b\u3002PCRF\/PCF\uff08Policy and Charging Rules Function\uff09\u30a8\u30ec\u30e1\u30f3\u30c8\u306f\u3001\u30c7\u30fc\u30bf\u4e0a\u9650\u3001\u3057\u304d\u3044\u5024\u4ee5\u964d\u306e\u30b9\u30d4\u30fc\u30c9\u30b9\u30ed\u30c3\u30c8\u30eb\u3001\u30d6\u30ed\u30c3\u30af\u306a\u3069\u306e\u30b5\u30fc\u30d3\u30b9\u5236\u9650\u3092\u542b\u3080\u5236\u5fa1\u3092\u5b9f\u65bd\u3059\u308b\u3002 <a href=\"https:\/\/blog.lebara.co.uk\/ja\/what-does-tethering-mean\/\">\u30c6\u30b6\u30ea\u30f3\u30b0<\/a> \u6d77\u5916\u3067\u306f.<\/p>\n\n\n\n<p>\u5177\u4f53\u7684\u306a\u898f\u5236\u306e\u4f8b<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>EU \u201cRoam Like at Home\u201d\u3001EU\u57df\u5185\u65c5\u884c\u306e\u30b5\u30fc\u30c1\u30e3\u30fc\u30b8\u3092\u64a4\u5ec3<\/li>\n\n\n\n<li>\u30aa\u30fc\u30b9\u30c8\u30e9\u30ea\u30a2\u3068\u30cb\u30e5\u30fc\u30b8\u30fc\u30e9\u30f3\u30c9\u306e\u4e8c\u56fd\u9593\u5354\u5b9a\u306b\u3088\u308b\u5272\u5f15\u6599\u91d1<\/li>\n\n\n\n<li>\u4e00\u90e8\u306e\u901a\u4fe1\u4e8b\u696d\u8005\u306f\u3001\u5378\u58f2\u308a\u306e\u640d\u5931\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u6052\u4e45\u7684\u306a\u30ed\u30fc\u30df\u30f3\u30b0\uff08\u6d77\u5916\u3067\u7d99\u7d9a\u7684\u306b\u4f7f\u7528\u3055\u308c\u308bSIM\uff09\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3066\u3044\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u653f\u7b56\u306e\u76ee\u306b\u898b\u3048\u308b\u52b9\u679c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d5\u30a7\u30a2\u30e6\u30fc\u30b9\u306e\u5236\u9650\u3092\u8d85\u3048\u308b\u3068\u30b9\u30d4\u30fc\u30c9\u304c\u843d\u3061\u308b<\/li>\n\n\n\n<li>\u30ed\u30fc\u30df\u30f3\u30b0\u8a31\u5bb9\u91cf\u306e80%\u3067SMS\u30a2\u30e9\u30fc\u30c8<\/li>\n\n\n\n<li>\u30cf\u30fc\u30c9\u30fb\u30c7\u30fc\u30bf\u30fb\u30ea\u30df\u30c3\u30c8\u306e\u81ea\u52d5\u30b5\u30fc\u30d3\u30b9\u30fb\u30ab\u30c3\u30c8\u30aa\u30d5<\/li>\n\n\n\n<li>\u4e00\u90e8\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u5229\u7528\u3067\u304d\u306a\u3044\uff08MMS\u3001\u30d7\u30ec\u30df\u30a2\u30e0\u901a\u8a71\uff09<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"eSIM_Multi-IMSI_and_the_Future_of_Roaming\"><\/span>eSIM\u3001\u30de\u30eb\u30c1IMSI\u3068\u30ed\u30fc\u30df\u30f3\u30b0\u306e\u672a\u6765<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>eSIM\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306f\u3001\u7269\u7406\u7684\u306a\u30ab\u30fc\u30c9\u306e\u5909\u66f4\u306a\u3057\u306b\u8907\u6570\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u5207\u308a\u66ff\u3048\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u3092\u6839\u672c\u7684\u306b\u5909\u3048\u308b\u3002\u65c5\u884c\u8005\u306f\u51fa\u767a\u524d\u306b\u73fe\u5730\u306eeSIM\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3001\u73fe\u5730\u306e\u3088\u3046\u306a\u63a5\u7d9a\u6027\u3092\u5373\u5ea7\u306b\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002.<\/p>\n\n\n\n<p>\u30de\u30eb\u30c1IMSI\u306f\u3001\u5358\u4e00\u306eSIM\u304c\u7570\u306a\u308b\u5730\u57df\u3067\u7570\u306a\u308bID\u3092\u63d0\u793a\u3059\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3057\u3001\u81ea\u56fd\u306e\u901a\u4fe1\u4e8b\u696d\u8005\u304c\u30b3\u30b9\u30c8\u3084\u54c1\u8cea\u4e0a\u306e\u7406\u7531\u304b\u3089\u52a0\u5165\u8005\u3092\u597d\u307f\u306e\u30ed\u30fc\u30df\u30f3\u30b0\u30d1\u30fc\u30c8\u30ca\u30fc\u306b\u8a98\u5c0e\u3059\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3059\u308b\u3002\u30b0\u30ed\u30fc\u30d0\u30eb\u30c8\u30e9\u30d9\u30ebeSIM\u306f\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u30cf\u30d6\u3068\u30de\u30eb\u30c1IMSI\u3092\u6d3b\u7528\u3057\u30011\u3064\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u53ef\u80fd\u306a\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3067\u6570\u5341\u30ab\u56fd\u306e\u30ab\u30d0\u30ec\u30c3\u30b8\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u671f\u5f85\u3055\u308c\u308b\u6280\u8853 <a href=\"https:\/\/blog.lebara.co.uk\/ja\/the-latest-trends-in-mobile-phone-technology\/\">\u30c8\u30ec\u30f3\u30c9<\/a> 2026-2030:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>2G\/3G\u306e\u65e5\u6ca1\u304c\u5b8c\u4e86\u3057\u3001VoLTE\u4f9d\u5b58\u304c\u62e1\u5927<\/li>\n\n\n\n<li>\u30cd\u30a4\u30c6\u30a3\u30d6\u30fb\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u3088\u308b5G\u30b9\u30bf\u30f3\u30c9\u30a2\u30ed\u30fc\u30df\u30f3\u30b0<\/li>\n\n\n\n<li>\u30d7\u30ec\u30df\u30a2\u30e0\u30ed\u30fc\u30df\u30f3\u30b0\u30b5\u30fc\u30d3\u30b9\u306e\u305f\u3081\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30e9\u30a4\u30b7\u30f3\u30b0<\/li>\n\n\n\n<li>\u4e8b\u696d\u8005\u9593\u306eIPX\u30a4\u30f3\u30bf\u30fc\u30ef\u30fc\u30ad\u30f3\u30b0\u306e\u62e1\u5927<\/li>\n\n\n\n<li>\u7269\u7406SIM\u3088\u308aeSIM\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u306b<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Summary_Putting_the_Technical_Pieces_Together\"><\/span>\u8981\u7d04\uff1a\u6280\u8853\u7684\u306a\u30d4\u30fc\u30b9\u3092\u7d44\u307f\u5408\u308f\u305b\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30ed\u30fc\u30df\u30f3\u30b0\u306f\u3001\u7121\u7dda\u30a2\u30af\u30bb\u30b9\u3001\u8a8d\u8a3c\u3001\u30e2\u30d3\u30ea\u30c6\u30a3\u7ba1\u7406\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3001\u304a\u3088\u3073\u8ab2\u91d1\u30921\u3064\u306e\u30b7\u30fc\u30e0\u30ec\u30b9\u306a\u30b7\u30b9\u30c6\u30e0\u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002\u6d77\u5916\u3067\u643a\u5e2f\u96fb\u8a71\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u30c7\u30d0\u30a4\u30b9\u306f\u8a2a\u554f\u5148\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u30a2\u30bf\u30c3\u30c1\u3055\u308c\u3001ID\u306f\u81ea\u5b85\u306eHLR\/HSS\u306b\u3088\u3063\u3066\u691c\u8a3c\u3055\u308c\u3001\u4f4d\u7f6e\u60c5\u5831\u306f\u4e21\u65b9\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u66f4\u65b0\u3055\u308c\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306f\u9069\u5207\u306b\u30c8\u30f3\u30cd\u30eb\u307e\u305f\u306f\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3055\u308c\u3001\u4f7f\u7528\u91cf\u306f\u81ea\u5b85\u306b\u8acb\u6c42\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u4e3b\u306a\u53ce\u7a6b<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8a8d\u8a3c\u304c\u79d8\u5bc6\u9375\u3092\u5371\u967a\u306b\u3055\u3089\u3059\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n\n\n\n<li>\u4f4d\u7f6e\u8ffd\u8de1\u306fGPS\u306e\u3088\u3046\u306a\u7cbe\u5ea6\u3067\u306f\u306a\u304f\u3001\u968e\u5c64\u7684\u306a\u30be\u30fc\u30f3\u3092\u4f7f\u3046<\/li>\n\n\n\n<li>\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u306f\u3057\u3070\u3057\u3070\u81ea\u56fd\u306eIP\u30b9\u30da\u30fc\u30b9\u304b\u3089\u767a\u4fe1\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u308b\u3002<\/li>\n\n\n\n<li>\u7740\u4fe1\u901a\u8a71\u306f\u3001HLR\u30af\u30a8\u30ea\u3068MSRN\u5272\u308a\u5f53\u3066\u306e\u305f\u3081\u306b\u9045\u5ef6\u304c\u751f\u3058\u308b<\/li>\n\n\n\n<li>\u30dd\u30ea\u30b7\u30fc\u30fb\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u306b\u3088\u308a\u3001\u30aa\u30da\u30ec\u30fc\u30bf\u306f\u4e0a\u9650\u3001\u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0\u3001\u5236\u9650\u3092\u5b9f\u65bd\u3067\u304d\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u30ec\u30ac\u30b7\u30fc\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u505c\u6b62\u3057\u30015G\u30b9\u30bf\u30f3\u30c9\u30a2\u30ed\u30f3\u304c\u6210\u719f\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u30ed\u30fc\u30df\u30f3\u30b0\u306f\u307e\u3059\u307e\u3059IP\u30d9\u30fc\u30b9\u3067\u30dd\u30ea\u30b7\u30fc\u4e3b\u5c0e\u578b\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002\u3053\u308c\u3089\u306e\u6280\u8853\u30ec\u30a4\u30e4\u30fc\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u65c5\u884c\u4e2d\u306b\u3088\u308a\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30c8\u306b\u63a5\u7d9a\u3092\u7dad\u6301\u3057\u3001\u30e2\u30d0\u30a4\u30eb\u30b5\u30fc\u30d3\u30b9\u3068\u30c7\u30d0\u30a4\u30b9\u306e\u8981\u4ef6\u306b\u3064\u3044\u3066\u5341\u5206\u306a\u60c5\u5831\u306b\u57fa\u3065\u3044\u305f\u6c7a\u5b9a\u3092\u4e0b\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>When your mobile phone connects to a foreign network in a different country, a complex chain of technical processes fires up behind the scenes. This article explains how roaming works technically in mobile networks, covering the signalling, authentication, routing, and billing mechanisms that make international connectivity possible. Roaming lets your SIM keep using your telephone number while attaching to a visited network anywhere in the world. Imagine landing in Spain as a UK Vodafone subscriber in 2026\u2014your mobile device automatically detects Orange Espa\u00f1a, authenticates through your home operator, and enables you to check email, make voice calls, and use mobile data without swapping SIM cards. Core Concepts: Home Network, Visited&#8230;<\/p>\n<div><a class=\"read-more button-link\" href=\"https:\/\/blog.lebara.co.uk\/ja\/how-roaming-works-technically-in-mobile-networks\/\">\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/div>","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[22],"tags":[],"class_list":["post-4006","post","type-post","status-publish","format-standard","hentry","category-phones","clearfix",false],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/blog.lebara.co.uk\/ja\/wp-json\/wp\/v2\/posts\/4006","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.lebara.co.uk\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.lebara.co.uk\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/ja\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/ja\/wp-json\/wp\/v2\/comments?post=4006"}],"version-history":[{"count":2,"href":"https:\/\/blog.lebara.co.uk\/ja\/wp-json\/wp\/v2\/posts\/4006\/revisions"}],"predecessor-version":[{"id":4020,"href":"https:\/\/blog.lebara.co.uk\/ja\/wp-json\/wp\/v2\/posts\/4006\/revisions\/4020"}],"wp:attachment":[{"href":"https:\/\/blog.lebara.co.uk\/ja\/wp-json\/wp\/v2\/media?parent=4006"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/ja\/wp-json\/wp\/v2\/categories?post=4006"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/ja\/wp-json\/wp\/v2\/tags?post=4006"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}