EP1759555B1

3G

Title

RECOVERY METHOD FOR LOST SIGNALING CONNECTION WITH HSDPA/FRACTIONAL DPCH

Application Number:

EP20050755179

Publication Date:

24-05-2017

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:

EP20050755179

Family ID:

Publication Country:

US

Publication Date:

24-05-2017

Application Date:

20-06-2005

Priority Date:

21-06-2004

Current Assignee:

Declaring Company:

Abstract  Abstract

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.

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.