Communication system, communication device, communication method, and non-transitory computer readable medium storing program

Abstract

An object is to provide a communication system capable of preventing a number of control signals, which could occur in a mobile communication network, from occurring when a VM is deleted in a node device without suspending a service. A communication system according to the present invention includes a communication device 1, and a communication device 2 configured to control a plurality of sessions set between the communication devices 1 and 2 by using a plurality of VMs, in which the communication device 2 notifies, by using a determination that a plurality of sessions that are controlled between the communication device 1 and a VM 3 should be controlled in a VM 4 different from the VM 3 as a trigger, the communication device 1 of identification information used in the VM 4 and updates the sessions.

1 - 41 . (canceled) 
     
     
         42 . A communication system comprising:
 a first communication device, and   a second communication device configured to:
 control a plurality of sessions set between the first communication device and the second communication device by using a plurality of virtual machine; 
 according to a determination that a session between the first communication device and a first virtual machine to be transferred to a second virtual machine, notify an identifier of the second virtual machine to a base station. 
   
     
     
         43 . The communication system according to  claim 42 ,
 wherein the determination made when the first virtual machine would be unavailable.   
     
     
         44 . The communication system according to  claim 42 ,
 wherein the determination made when the first virtual machine would be deleted.   
     
     
         45 . The communication system according to  claim 42 ,
 wherein the second communication device notifies the first communication device of identifier of the second virtual machine for the plurality of sessions at a time.   
     
     
         46 . The communication system according to  claim 42 ,
 wherein the identifier is an IP (Internet Protocol) address or a TEID (Tunnel Endpoint ID).   
     
     
         47 . A communication device comprising:
 a memory storing instructions; and   a processor configured to execute the instructions to:
 control a plurality of sessions set between the communication device and other communication device by using a plurality of virtual machine; 
 according to a determination that a session between the communication device and a first virtual machine to be transferred to a second virtual machine, notify an identifier of the second virtual machine to a base station. 
   
     
     
         48 . The communication device according to  claim 47 ,
 wherein the determination made when the first virtual machine would be unavailable.   
     
     
         49 . The communication device according to  claim 47 ,
 wherein the determination made when the first virtual machine would be deleted.   
     
     
         50 . The communication device according to  claim 47 ,
 wherein the other communication device notifies the communication device of identifier of the second virtual machine for the plurality of sessions at a time.   
     
     
         51 . The communication device according to  claim 47 ,
 wherein the identifier is an IP (Internet Protocol) address or a TEID (Tunnel Endpoint ID).   
     
     
         52 . A communication method comprising:
 control a plurality of sessions set between a first communication device and second communication device by using a plurality of virtual machine;   according to a determination that a session between the first communication device and a first virtual machine to be transferred to a second virtual machine, notify an identifier of the second virtual machine to a base station.   
     
     
         53 . The communication method according to  claim 52 ,
 wherein the determination made when the first virtual machine would be unavailable.   
     
     
         54 . The communication method according to  claim 52 ,
 wherein the determination made when the first virtual machine would be deleted.   
     
     
         55 . The communication method according to  claim 52 ,
 wherein the second communication device notifies the first communication device of identifier of the second virtual machine for the plurality of sessions at a time.   
     
     
         56 . The communication method according to  claim 52 ,
 wherein the identifier is an IP (Internet Protocol) address or a TEID (Tunnel Endpoint ID).