Section: 4.4.4.10 Abnormal cases on the network side
Content: a) RR connection failure If a RR connection failure occurs during a common procedure integrated with the location updating procedure, the behaviour of the network should be according to the description of that common procedure. If a RR connection failure occurs when a common procedure does not exist, the location updating procedure towards the mobile station should be aborted. b) protocol error If the LOCATION UPDATING REQUEST message is received with a protocol error, the network should, if possible, return a LOCATION UPDATING REJECT message with one of the following Reject causes: #96: Mandatory information element error #99: Information element non-existent or not implemented #100: Conditional IE error #111: Protocol error, unspecified Having sent the response, the network should start the channel release procedure (see subclause 3.5). Figure 4.5/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Location updating sequence