Mobility state enhancements

Patent metadata

Field	Value
Publication number	US-10004011-B2
Application number	US-201214240633-A
Country	US
Kind code	B2
Filing date	Aug 21, 2012
Priority date	Aug 22, 2011
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

In a cellular communications network, a measurement report is requested to enable handover conditions to be established. In one approach, a measurement report is based on satisfaction of an event. Signalling for this measurement report includes one or more parameters on the basis of which the event is defined, including a trigger time defining a time period over which the event should be satisfied for the report to be triggered. In one approach, speed dependent scaling is applied to a parameter other than the trigger time, in the defined event. In another approach, a handover scenario, concerning the nature of the cell in which the user equipment is operational, and optionally that of a neighboring cell, governs the definition of a trigger event.

First claim

The invention claimed is:

1. A terminal in a communication system, the terminal comprising:
a transceiver configured to transmit and receive signals; and
at least one processor configured to:
control the transceiver to receive a cell list associated with a predetermined cell type from a base station,
identify, by the terminal, a type of handover based on the received cell list associated with the predetermined cell type,
identify a configuration parameter among at least two configuration parameters based on the identified type of the handover, and
trigger a measurement report using the identified configuration parameter.

2. The terminal of claim 1 , wherein the at least one processor is further configured to receive the at least two configuration parameters from the base station.

3. The terminal of claim 1 , wherein each configuration parameter includes a time to trigger (TTT).

4. The terminal of claim 1 , wherein the received cell list includes at least one of a cell index or a physical cell identifier (PCI) range.

5. The terminal of claim 1 , wherein the type of the handover includes one of a pico-macro handover, a macro-pico handover, a pico-pico handover, or macro-macro handover.

6. The terminal of claim 3 , wherein each configuration parameter further includes at least one of an offset, a threshold, a hysteresis, or a scaling factor, for the measurement report.

7. The terminal of claim 1 , wherein the at least one processor is further configured to control the transceiver to transmit the triggered measurement report to the base station.

8. A method by a terminal in a communication system, the method comprising:
receiving, by the terminal, a cell list associated with a predetermined cell type from a base station;
identifying, by the terminal, a type of handover based on the received cell list associated with the predetermined cell type;
identifying a configuration parameter among at least two configuration parameters based on the identified type of the handover; and
triggering a measurement report using the identified configuration parameter.

9. The method of claim 8 , wherein the method further comprises receiving the at least two configuration parameters from the base station.

10. The method of claim 8 , wherein each configuration parameter includes a time to trigger (TTT).

11. The method of claim 8 , wherein the received cell list includes at least one of a cell index or a physical cell identifier (PCI) range.

12. The method of claim 8 , wherein the type of the handover includes one of a pico-macro handover, a macro-pico handover, a pico-pico handover, or a macro-macro handover.

13. The method of claim 10 , wherein each configuration parameter includes at least one of an offset, a threshold, a hysteresis, or a scaling factor, for the measurement report.

14. The method of claim 11 , wherein the method further comprises transmitting the triggered measurement report to the base station.

Assignees

• Van Lieshout Gert Jan
• Van Der Velde Himke
• Samsung Electronics Co Ltd

Inventors

• Van Lieshout Gert-Jan
• Van Der Velde Himke

Classifications

• H04W36/04

  Reselecting a cell layer in multi-layered cells · CPC title

• H04W84/045

  using private Base Stations, e.g. femto Base Stations, home Node B · CPC title

• H04W36/0088 Primary

  Scheduling hand-off measurements · CPC title

• H04W36/0094 Primary

  Definition of hand-off measurement parameters · CPC title

• H04W36/32

  by location or mobility data, e.g. speed data · CPC title