CN101023697A

3G

Title

RECOVERY METHOD FOR LOST SIGNALING CONNECTION WITH HSDPA/FRACTIONAL DPCH

Application Number:

CN2005826115

Publication Date:

22-08-2007

Current Assignee:

Family ID:

Application Date:

20-06-2005

Declaring Company:

Publication Country:

US

Priority Date:

21-06-2004

Title

RECOVERY METHOD FOR LOST SIGNALING CONNECTION WITH HSDPA/FRACTIONAL DPCH

Application Number:

CN2005826115

Family ID:

Publication Country:

US

Publication Date:

22-08-2007

Application Date:

20-06-2005

Priority Date:

21-06-2004

Current Assignee:

Declaring Company:

Abstract  Abstract

The invention claims a method and a device for defining terminal action when the terminal detects that HS-DSCH can not be reliably received from service cell in the network while mapping DCCH to HS-DSCH (for example any feedback of radio link control (RLC) confirm mode of uplink link test report is inaccessible or generally in said service HS-DSCH cell the level of common pilot frequency channel (CPICH) is dropped to be too low). Said terminal automatically turns to cell forward access channel (CELL-FACH) state and initials uplink signaling at random access channel (RACH) to inform network node and requires to reestablish HS-DSCH at suitable cell or establish regular RPP/R5DPCH so to restore the RRC signaling connection at CELL-DCH state.

A method and apparatus are provided for defining terminal behavior in a case where the terminal detects that it cannot receive the HS-DSCH from a serving cell reliably when the DCCH is mapped to HS-DSCH (e.g. does not receive any radio link control (RLC) acknowledged mode feedback for the uplink measurement reports or in general the common pilot channel (CPICH) level drops too low in the serving HS-DSCH cell). The terminal is autonomously moved to a cell forward access channel (CELL_FACH) state and uplink signaling is initiated on a random access channel (RACH) to inform a network node and ask for HS-DSCH re-establishment in a suitable cell or setting up a regular R99/R5 DPCH in order to restore the RRC signaling connection in the CELL_DCH state.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.