Communication method, mobile network system and device

Abstract

A mobile communication system, comprising a user equipment (UE), a mobility management entity (MME), and a mobile switching center/visited location register (MSC/VLR), wherein the MME, upon reception of an SGsAP-PAGING-REQUEST message regarding an international mobile-station subscription identifier (IMSI) from the MSC/VLR as a paging request message, sends the paging request message including location information provided by the MSC/VLR to page the UE.

What is claimed: 
     
         1 . A mobile communication system, comprising a user equipment (UE), a mobility management entity (MME), and a mobile switching center/visited location register (MSC/VLR), wherein
 the MME, upon reception of an SGsAP-PAGING-REQUEST message regarding an international mobile-station subscription identifier (IMSI) from the MSC/VLR as a paging request message, sends the paging request message including location information provided by the MSC/VLR to page the US.   
     
     
         2 . A mobility management entity (MME) used in a mobile communication system that comprises a user equipment (UE) and a mobile switching center/visited location register (MSC/VLR), the MME comprising:
 a paging unit that, upon reception of an SGsAP-PAGING-REQUEST message regarding an international mobile-station subscription identifier (IMSI) from the MSC/VLR as a paging request message, sends the paging request message including location information provided by the MSC/VLR to page the UE.   
     
     
         3 . A user equipment (UE) used in a mobile communication system that comprises a mobility management entity (MME) and a mobile switching center/visited location register (MSC/VLR), wherein
 the MME, upon reception of an SGsAP-PAGING-REQUEST message regarding an international mobile-station subscription identifier (IMSI) from the MSC/VLR as a paging request message, sends the paging request message including location information provided by the MSC/VLR so that the UE is paged by the MME.   
     
     
         4 . A communication method in a mobile communication system that comprises a user equipment (UE), a mobility management entity (MME) and a mobile switching center/visited location register (MSC/VLR), the communication method comprising:
 by the MME, upon reception of an SGsAP-PAGING-REQUEST message regarding an international mobile-station subscription identifier (IMSI) from the MSC/VLR as a paging request message, sending the paging request message including location information provided by the MSC/VLR to page the UE.   
     
     
         5 . A communication method of a mobility management entity (MME) used in a mobile communication system that comprises a user equipment (UE) and a mobile switching center/visited location register (MSC/VLR), the communication method comprising:
 by the MME, upon reception of an SGsAP-PAGING-REQUEST message regarding an international mobile-station subscription identifier (IMSI) from the MSC/VLR as a paging request message, sending the paging request message including location information provided by the MSC/VLR to page the UE.   
     
     
         6 . A communication method of a user equipment (UE) used in a mobile communication system that comprises a mobility management entity (MME) and a mobile switching center/visited location register (MSC/VLR), the communication method comprising:
 by the MME, upon reception of an SGsAP-PAGING-REQUEST message regarding an international mobile-station subscription identifier (IMSI) from the MSC/VLR as a paging request message, sending the paging request message including location information provided by the MSC/VLR; and   by the UE, being paged by the MME.   
     
     
         7 . The mobile communication system according to  claim 1 , wherein the MME has restarted. 
     
     
         8 . The mobile communication system according to  claim 1 , wherein the location information includes location registration area information. 
     
     
         9 . A mobile communication system, comprising: a mobility management entity (MME) or a serving GPRS (General Packet Radio Service) support node (SGSN); and a serving gateway (SGW), wherein
 the SGW, upon detection of restart of the MME or the SGSN, maintains a specific S5/S8 bearer resource appropriate for network triggered service restoration and deletes all other S5/S8 bearer resource.   
     
     
         10 . A serving gateway (SGW) used in a mobile communication system that comprises a mobility management entity (MME) or a serving GPRS (General Packet Radio Service) support node (SGSN), the SGW comprising:
 a unit that, upon detection of restart of the MME or the SGSN, maintains a specific S5/S8 bearer resource appropriate for network triggered service restoration and deletes all other S5/S8 bearer resource.   
     
     
         11 . A user equipment (UE) used in mobile communication system that comprises: a mobility management entity (MME) or a serving GPRS support node (SGSN); and a serving gateway (SGW), the UE comprising:
 a unit that reattaches to the mobile communication system in response to a paging from the mobile communication system with the SGW maintaining, upon detection of restart of the MME or the SGSN, a specific S5/S8 bearer resource appropriate for network triggered service restoration and deleting all other S5/S8 bearer resource(s).