Methods for air interface message transfer in fast call setup processes

Information

  • Patent Application
  • 20070165595
  • Publication Number
    20070165595
  • Date Filed
    December 15, 2006
    18 years ago
  • Date Published
    July 19, 2007
    17 years ago
Abstract
A method of UU message transfer for fast call setup. The method includes encapsulating a Service Request into a RRC Connection Request. When a UE starts the service sensitive to call setup delay, the RRC layer encapsulates the Service Request into IDT. If this encapsulation is successful, the RRC connection request message undergoes non-critical extension, and the encapsulated IDT is disposed into the extended portion. The RNC, after receiving the extended RRC connection request, extracts the IDT message from the extended RRC CONNECTION REQUEST and sends it to the CN.
Description

BRIEF DESCRIPTION OF THE DRAWINGS


FIG. 1 is a flow chart of a call setup process in accordance with the prior art.



FIG. 2 is a flow chart of a call setup method in accordance with the prior art.



FIG. 3 is a flow chart of a call setup method in accordance with an embodiment of the invention.



FIG. 4 is the flow chart of the call setup method in accordance with an embodiment of the invention.


Claims
  • 1. A method for fast call setup for originating User Equipment (UE) and terminating User Equipment, comprising: Step 1: When the originating UE starts a service sensitive to call setup delay, NAS of the UE informing a RRC layer whether to start fast call setup procedure. If not, the RRC starts RRC connection request directly. If so, here goes Step 2;Step 2: RRC layer of UE encapsulates Service Request into Initial Direct Transfer (IDT). If it is successful, proceed to Step 3. Otherwise, RRC layer of UE proceed as usual, i.e., RRC sends RRC CONNECTION REQUEST directly.Step 3: RRC CONNECTION REQUEST undergoes the process of non-critical extension, and the encapsulated IDT is put into the extended part.RNC, after receiving the extended RRC CONNECTION REQUEST, take the IDT message from the extended RRC CONNECTION REQUEST, and then encapsulate the Service Request message from IDT and send it to CN.
  • 2. The method of claim 1 further comprising signaling procedures of the UE's: For the originating UE: 1) RRC CONNECTION REQUEST is modified, in which Service Request from NAS is encapsulated. Service Request is sent to CN through RNC, and CN send RAB assignment request message to RNC;2) RRC CONNECTION SETUP is modified, and RB parameters of service are added into the extended part. RNC undertake the mapping from RAB to RB parameters after receiving RAB Assignment Request message from CN, and send the extended RRC CONNECTION SETUP on air interface to inform UE that both signaling channel and service channel are to be established in parallel.3)After receiving RRC Connection Setup, UE configure signaling and service channel at the same time. After Layer 1 synchronization, RRC Connection Setup Complete be sent on the completed dedicated signaling channel, indicating that signaling and service channel setup is successful.For the terminating UE, signaling procedures are similar to those of the originating call, with an exception of paging.
  • 3. The method of claim 2 wherein parameters such as RLC, MAC, Transport Channel (TrCH), PhyCH, corresponding with the service is added in RRC Connection Setup.
  • 4. The method of claim 2 wherein a default configuration or a pre-configuration is utilized to save in UE Semi-static channel parameters, corresponding with signaling and service.
  • 5. The method of claim 2 wherein the RRC Connection Setup Complete is a result of the modification of RRC connection setup complete, that is, the related RB Setup Complete message is added into RRC Connection Setup Complete message.
  • 6. The method of claim 2 wherein for the terminating UE, paging message is based on previous paging message, added by the indicator of service type, UE start signaling procedures which corresponds with optimization scenario, if the new service is decided to be PoC traffic by the terminating UE.
Priority Claims (1)
Number Date Country Kind
200610023423.0 Jan 2006 CN national