# US 2014/0155074 A1 · Method, User Equipment and System for Maintaining a Large Number of Connections > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155074 A1 - Document ID: US20140155074A1 - Status: Published application - Kind: A1 - Application number: 14/004,721 - Filed: 2011-11-23 - Published: 2014-06-05 - Earliest claimed: 2011-08-25 - Assignees: Zte Corporation - Inventors: Hui Xu - Web page: https://patentgrep.com/patent/US20140155074A1 ## CPC - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - H04W 76/00: Connection management - H04W 76/10: Connection setup - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The present invention provides a method for maintaining a large number of connections. The method comprises: when there is no data transmission between a User Equipment (UE) and a network, a network device deletes a radio bearer and reserves UE context information related to link restoration and a default bearer; when data needs to be transmitted between the UE and the network, the network device establishes a bearer connection with the UE according to the reserved UE context information related to link restoration. At the same time, the present invention provides a UE and system for maintaining a large number of connections. By using the method, the UE and the system of the present invention, a large number of UE connections can be maintained effectively, the network load can be reduced and the connection recovery process can be accelerated. ## Claims ### Claim 1 A method for maintaining a large number of connections, comprising: when there is no data transmission between a User Equipment (UE) and a network, a network device deleting a radio bearer and reserving UE context information related to link restoration and a default bearer; and when data needs to be transmitted between the UE and the network, the network device establishing a bearer connection with the UE according to the reserved UE context information related to link restoration. ### Claim 2 (depends on 1) The method according to claim 1, wherein when a time interval without data transmission between the UE and the network is smaller than a preset threshold, the method further comprises: the network device further reserving a wire bearer; wherein the wire bearer comprises: an S1 bearer, an S5/8 bearer and an SGi bearer. ### Claim 3 (depends on 1) The method according to claim 1, wherein when data transmission needs to be performed between the UE and the network all the time, or when a connection between the UE and the network needs to be maintained according to a subscription attribute of the UE or an operator strategy, the method further comprises: the network device reserving the radio bearer and reserving all context information of the UE and the wire bearer; wherein the wire bearer comprises: an S1 bearer, an S5/8 bearer and an SGi bearer. ### Claim 4 (depends on 1) The method according to claim 1, wherein said a large number of connections refer to more than two connections. ### Claim 5 A method for maintaining a large number of connections, comprising: when there is no data transmission between a User Equipment (UE) and a network, a network device deleting a radio bearer, and reserving UE context information related to link restoration and a default bearer; after a fault or a power failure occurs in the network device, discarding all reserved context information of the UE and deleting all bearers, or after the network device initiates a detach process to delete all context information of a large number of UEs and all the bearers because a large amount of UE information is not detected within a specified duration, the method further comprises: when a Machine Type Communication (MTC) server needs to transmit data to a group of the UEs, sending trigger information to the UEs by the network device to establish connections with the UEs. ### Claim 6 (depends on 5) The method according to claim 5, wherein sending the trigger information to the UEs by the network device to establish the connections with the UEs comprises: the MTC server sending the trigger information to the network device; the network device forwarding the received trigger information and sending the trigger information to the UEs corresponding to the received trigger information; and after receiving the trigger information, the UEs initiating an attach process and establishing connections with a network side. ### Claim 7 (depends on 6) The method according to claim 6, wherein when the network device forwards the received trigger information, the method further comprises: the network device converting a UE identifier in the received trigger information into an International Mobile Subscriber Identity (IMSI). ### Claim 8 (depends on 5) The method according to claim 5, wherein said a large number of connections refer to more than two connections. ### Claim at position 9 9-15. (canceled) ### Claim 16 A system for maintaining a large number of connections, comprising a network device, a Machine Type Communication (MTC) server and a User Equipment (UE), wherein the network device is configured to, when there is no data transmission between the UE and a network, delete a radio bearer and reserve UE context information related to link restoration and a default bearer; the MTC server is configured to, when all reserved context information of the UE is lost and all bearers are deleted after a fault or a power failure occurs in the network device, or after the network side initiates a detach process to delete all context information of a large number of UEs and all the bearers because a large amount of UE information is not detected within a specified duration and when data needs to be transmitted to a group of the UEs, send trigger information to the UEs via the network device and establish connections between the MTC server and all the UEs; and the UE is configured to, after receiving the trigger information sent by the MTC server via the network device, establish a connection with the MTC server. ### Claim 17 (depends on 16) The system according to claim 16, wherein the MTC server is configured to, send the trigger information to the network device; the network device is configured to, after receiving the trigger information sent by the MTC server, forward the received trigger information and send the trigger information to the UE; and the UE is configured to, after receiving the trigger information sent by the network device, initiate an attach process and establish a connection with the network side. ### Claim 18 (depends on 17) The system according to claim 17, wherein when forwarding the received trigger information, the network device is further configured to convert a UE identifier in the received trigger information into an International Mobile Subscriber Identity (IMSI). ### Claim 19 (depends on 16) The system according to claim 16, wherein the number of the UEs is two or more than two.