In order to allow an access to the Internet, and therefore to a remote server, for a device having no connection with an Internet gateway, there is proposed a method to transmit a message from a first device to a remote server, the first device having no connection with the remote server, said method comprising: detecting a second device by the first device, establishing a communication channel between the first and the second device, transferring the message from the first to the second device, said message comprising an address of the remote server, transferring, by the second device, the message to the remote server using the remote server address contained in the message.

Active-active standby is maintained for communication sessions using web connections between two active session zones and a standby session zone, for example, in the event of a failure. A first load balancer directs system management communications of a first datacenter to a first server of the first datacenter. A second load balancer directs the system management communications during a failure event to a second server. A database controller performs a failover based on the failure event.

Active-active standby is maintained for communication sessions using web connections between two active session zones and a standby session zone, for example, in the event of a failure. A first load balancer directs system management communications of a first datacenter to a first server of the first datacenter. A second load balancer directs the system management communications during a failure event to a second server. A database controller performs a failover based on the failure event.

A device receives a notification indicating a failure of a first server device responsible for a primary message queue that includes messages at a time of the failure. A second server device is responsible for a standby message queue to which the messages are replicated, where a position in the standby message queue and a message time are assigned to each of the replicated messages. The device obtains a record time that identifies the message time of one of the messages that was last obtained from the primary message queue prior to the failure, compares an adjusted record time and the message time of one or more of the messages of the standby message queue to determine a starting position in the standby message queue, and processes messages obtained from the standby message queue beginning at one of the messages assigned to the position that matches the starting position.

A device receives a notification indicating a failure of a first server device responsible for a primary message queue that includes messages at a time of the failure. A second server device is responsible for a standby message queue to which the messages are replicated, where a position in the standby message queue and a message time are assigned to each of the replicated messages. The device obtains a record time that identifies the message time of one of the messages that was last obtained from the primary message queue prior to the failure, compares an adjusted record time and the message time of one or more of the messages of the standby message queue to determine a starting position in the standby message queue, and processes messages obtained from the standby message queue beginning at one of the messages assigned to the position that matches the starting position.

Provided is a server management system which selects an active system and a standby system by using multiple server resources managed by being divided into multiple categories in a predetermined standard and in which a service providing server is redundantly disposed, the system including: a selection information input unit acquiring selection information that is information necessary for selecting the category; a selection information storage unit storing the selection information input from the selection information input unit; a failure information storage unit storing failure information indicating a failure occurring in the category; a selection unit selecting an additional category based on an failure occurrence according to the active system and/or the standby system; and a selection result output unit outputting the category selected, in which the selection unit refers to the failure information with respect to a category satisfying a condition indicated by selection information and selects an additional category.

Provided is a server management system which selects an active system and a standby system by using multiple server resources managed by being divided into multiple categories in a predetermined standard and in which a service providing server is redundantly disposed, the system including: a selection information input unit acquiring selection information that is information necessary for selecting the category; a selection information storage unit storing the selection information input from the selection information input unit; a failure information storage unit storing failure information indicating a failure occurring in the category; a selection unit selecting an additional category based on an failure occurrence according to the active system and/or the standby system; and a selection result output unit outputting the category selected, in which the selection unit refers to the failure information with respect to a category satisfying a condition indicated by selection information and selects an additional category.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a first network data analytics function (NWDAF) is provided. The method comprises: receiving, from a NWDAF service consumer, a first request for first analytics information, the first request including first time information on a first time duration when the first analytics information is needed for the NWDAF service consumer; transmitting, to a second NWDAF, a second request for second analytics information, the second request including second time information on a second time duration when the second analytics information is needed for the first NWDAF; receiving, from the second NWDAF, a second response including the second analytics information; and transmitting, to the NWDAF service consumer, a first response including the first analytics information generated based on second analytics information received from the at least one second NWDAF.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a first network data analytics function (NWDAF) is provided. The method comprises: receiving, from a NWDAF service consumer, a first request for first analytics information, the first request including first time information on a first time duration when the first analytics information is needed for the NWDAF service consumer; transmitting, to a second NWDAF, a second request for second analytics information, the second request including second time information on a second time duration when the second analytics information is needed for the first NWDAF; receiving, from the second NWDAF, a second response including the second analytics information; and transmitting, to the NWDAF service consumer, a first response including the first analytics information generated based on second analytics information received from the at least one second NWDAF.

The present invention relates to communications methods and apparatus for distributing Session Initiation Protocol (SIP) messages among SIP processing entities including during periods of failure recovery. An exemplary method embodiment includes the steps of: establishing a first connection oriented protocol connection between a first Session Initiation Protocol Load Balancer (SLB) of a plurality of SLBs and a client device; receiving via the first connection oriented protocol connection at the first SLB a first SIP REGISTER request message from the first client device; determining, by the first SLB, based on information received from the client device, a first Session Border Controller (SBC) from a plurality of SBCs to send the first SIP REGISTER request message, said information uniquely identifying the first SBC from other SBCs in the plurality of SBCs; and sending, by the first SLB, the first SIP REGISTER request message to the first SBC.