Method for determining handover criterion in a cellular wireless communication system

Patent metadata

Field	Value
Publication number	US-9723524-B2
Application number	US-201615015013-A
Country	US
Kind code	B2
Filing date	Feb 3, 2016
Priority date	Dec 23, 2010
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

The present application relates to a method for determining handover criterion in a cellular wireless communication system, said cellular wireless communication system employing handover procedures according to which mobile stations may be handed over from a cell to another cell; said method comprising the steps of: receiving at least one handover control criterion parameter, and determining at least one handover criterion based on said at least one handover control criterion parameter. Furthermore, the present application also relates to a method in a network control entity, a method in a network entity, a computer program, a computer program product, a network control entity device, a network entity device and a cellular communication system comprising such devices.

First claim

What is claimed is:

1. A method, comprising:
obtaining, by a network entity in a cellular wireless communication system, parameters associated with a handover control criterion, wherein the handover control criterion is adopted for changing a handover trigger value, the handover trigger value is a cell specific offset that is associated with a threshold at which a cell initializes a handover preparation procedure, and the parameters comprise a threshold value used to define a maximum allowed frequency which indicates how often the handover trigger value is changed and to define a maximum value allowed for the handover trigger value to change; and
changing, by the network entity, the handover trigger value according to the parameters.

2. The method according to claim 1 , wherein the obtaining, by a network entity in a cellular wireless communication system, parameters associated with a handover control criterion comprises:
receiving, by the network entity, the parameters from a network control entity.

3. The method according to claim 2 , wherein the network control entity is at least one of the following: Operations and Maintenance (OAM) entity, Network Management System (NMS) entity and Element Management System (EMS) entity.

4. The method according to claim 2 , wherein the network entity is integrated in a base station.

5. A network entity in a cellular wireless communication system, comprising
a transceiver; and
a processor, communicatively connected with the transceiver; wherein
the processor is configured to
obtain parameters associated with a handover control criterion, wherein the handover control criterion is adopted for changing a handover trigger value, the handover trigger value is a cell specific offset that associated with a threshold at which a cell initializes a handover preparation procedure, and the parameters comprise a threshold value used to define a maximum allowed frequency which indicates how often the handover trigger value is changed and to define a maximum value allowed for the handover trigger value to change; and
change the handover trigger value according to the parameters.

6. The network entity according to claim 5 , wherein
the transceiver is configured to receive the parameters from a network control entity.

7. The network entity according to claim 5 , wherein the network entity is integrated in a base station.

8. A cellular wireless communication system, comprising a network entity and a network control entity, wherein
the network entity is configured to:
receive, from the network control entity, parameters associated with a handover control criterion, wherein the handover control criterion is adopted for changing a handover trigger value, the handover trigger value is a cell specific offset that associated with a threshold at which a cell initializes a handover preparation procedure, and the parameters comprise a threshold value used to define a maximum allowed frequency which indicates how often the handover trigger value is changed and to define a maximum value allowed for the handover trigger value to change; and
change the handover trigger value according to the parameters; and
the network control entity is configured to: send the parameters to the network entity.

9. The system according to claim 8 , wherein the network control entity is at least one of the following: Operations and Maintenance (OAM) entity, Network Management System (NMS) entity and Element Management System (EMS) entity.

10. The system according to claim 8 , wherein the network entity is integrated in a base station.

Assignees

• Huawei Tech Co Ltd

Inventors

• Olofsson Henrik
• Legg Peter

Classifications

• H04W84/042

  Public Land Mobile systems, e.g. cellular systems · CPC title

• H04W36/0016 Primary

  Hand-off preparation specially adapted for end-to-end data sessions · CPC title

• H04W36/16

  Performing reselection for specific purposes · CPC title

• H04W36/24

  Reselection being triggered by specific parameters · CPC title

• H04W36/0083 Primary

  Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists · CPC title