A.When there are ping-pong problems in all neighboring areas, reduce the inter- frequency switching threshold 1-3dB

B.When there are ping-pong problems in all neighboring areas, the handover decision timer is not lower than 640ms.

C.When there are ping-pong problems in all neighboring areas, reduce the 0cs parameter 1-3dB

D.Reduce the coverage of the cell for overlapping coverage problems and reduce the coverage of overlapping coverage areas in the adjacent area

A.The uplink rate of the UE in the GPS out-of-steps cell is very low.

B.UE cannot access the service in the GPS out-of-steps cell.

C.UE in the neighborhood of GPS out-of-steps cell cannot access to conduct business

D.UE has a large delay in performing PING service in the GPS out-of-steps cell.

A.Deploy and develop an IMS network, involving more new or modified network elements

B.Since the voice is carried on the IP, the IMS can be used to enhance more rich media services for users and compete with OTT.

C.Implement end-to-end QoS control to ensure voice call quality

D.Seamlessly inherit all the services provided by the original CS network, including general services such as emergency calls and monitoring and regulatory services.

E.Fully retain the user's logo (MSISDN, etc.), and continue to tap business profit by using the operator's number resources.

A.SCTP

B.SlAP

C.GTPU

D.NAS

A.UnknownError

B.LogicalError

C.TransferSyntaxError

D.AbstractSyntaxError