Evolved Packet System Quality of Service Enforcement Deactivation Handling to Prevent Unexpected User Equipment Detach

Abstract

A system of a telecommunications network is provided. The system includes a processor configured to promote preventing a detachment of a user equipment (UE) from the network by preventing deactivation of at least one default bearer between the UE and the network when at least one bearer between the UE and the network is to be deactivated based on a quality of service parameter.

What is claimed is: 
     
         1 . A method for preventing a detachment of a user equipment (UE) from a network, comprising:
 when at least one bearer between the UE and the network is to be deactivated based on a quality of service parameter, preventing deactivation of at least one default bearer between the UE and the network,   wherein the quality of service parameter of the UE is a priority level of the UE, and a decision is made to deactivate the at least one bearer when the priority level of the UE is lower than a priority level of another UE connected to the network.   
     
     
         2 . The method of  claim 1 , wherein preventing at least one deactivation of at least one default bearer between the UE and the network is accomplished by implementing a policy specifying that deactivation of default bearers is not allowed. 
     
     
         3 . The method of  claim 2 , wherein the policy is implemented by one of:
 a packet data network gateway; and   a policy control and charging rules function.   
     
     
         4 . The method of  claim 1 , wherein preventing at least one deactivation of at least one default bearer between the UE and the network is accomplished by implementing a policy specifying that a request to deactivate a default bearer is to be rejected. 
     
     
         5 . The method of  claim 4 , wherein the policy to reject the request to deactivate the default bearer is implemented by one of:
 the UE;   a mobility management entity; and   a serving gateway.   
     
     
         6 . The method of  claim 1 , wherein preventing at least one deactivation of at least one default bearer between the UE and the network is accomplished by implementing a policy specifying that a request to deactivate at least one of a plurality of default bearers is to be rejected by a mobility management entity. 
     
     
         7 . The method of  claim 1 , wherein preventing at least one deactivation of at least one default bearer between the UE and the network is accomplished by rejecting a request to deactivate at least one of a plurality of default bearers at a mobility management entity. 
     
     
         8 . A system in a telecommunications network, comprising:
 a processor configured to promote preventing a detachment of a user equipment (UE) from the network by preventing deactivation of at least one default bearer between the UE and the network when at least one bearer between the UE and the network is to be deactivated based on a quality of service parameter,   wherein the quality of service parameter of the UE is a priority level of the UE, and a decision is made to deactivate the at least one bearer when the priority level of the UE is lower than a priority level of another UE connected to the network.   
     
     
         9 . The system of  claim 8 , wherein the component prevents deactivation of at least one default bearer between the UE and the network by implementing a policy specifying that deactivation of default bearers is not allowed. 
     
     
         10 . The system of  claim 9 , wherein the system is one of:
 a packet data network gateway; and   a policy control and charging rules function.   
     
     
         11 . The system of  claim 8 , wherein the system prevents deactivation of at least one default bearer between the UE and the network by implementing a policy specifying that a request to deactivate a default bearer is to be rejected. 
     
     
         12 . The system of  claim 11 , wherein the system is one of:
 the UE;   a mobility management entity; and   a serving gateway.   
     
     
         13 . The system of  claim 8 , wherein the system prevents deactivation of at least one default bearer between the UE and the network by implementing a policy specifying that a request to deactivate at least one of a plurality of default bearers is to be rejected by a mobility management entity. 
     
     
         14 . The system of  claim 8 , wherein the system prevents deactivation of at least one default bearer between the UE and the network by rejecting a request to deactivate at least one of a plurality of default bearers at a mobility management entity. 
     
     
         15 . A system in a telecommunications network, comprising:
 a processor configured to promote preventing a detachment of a user equipment (UE) from the network by preventing deactivation of at least one default bearer between the UE and the network when at least one bearer between the UE and the network is to be deactivated based on a quality of service parameter,   wherein the quality of service parameter of the UE is a priority level of the UE, and a decision is made to deactivate the at least one bearer when the priority level of the UE is lower than a priority level of another UE connected to the network and a congestion condition exists on the network.   
     
     
         16 . The system of  claim 15 , wherein the system prevents deactivation of at least one default bearer between the UE and the network by rejecting a request to deactivate at least one of a plurality of default bearers at a mobility management entity.