Handover in LTE-A-heterogeneous network
AssigneeNokia Solutions and Networks Oy
InventorsLing Yu, Vinh Van Phan, Kari Veikko Horneman
Life of this patent
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Abstract
There is provided a method, comprising: configuring, by a network node controlling a macro cell of a cellular communication system, at least one handover trigger related signalling configuration for at least one terminal device of the cellular communication system; receiving, by the network node controlling the macro cell, as a result of said signalling configuration, an uplink message broadcasted by the at least one terminal device via a local area access node; recognizing the local area access node as an edge node located at an edge of a coverage area of the macro cell; and initiating a handover of the terminal device between the macro cell and a neighbouring macro cell.
Claims20
A method, comprising:
- obtaining, by a terminal device, at least one handover trigger related signaling configuration for the terminal device to trigger at least one uplink broadcast transmission when the terminal device is in a coverage area of a local area access node operating on an edge of a coverage area of a macro cell network node;
- and
- causing an uplink broadcast transmission from the terminal device to the local area access node, the local area access node included in a plurality of local area access nodes that receive the uplink broadcast transmission, according to the handover trigger related signaling configuration for forwarding at least part of uplink data to the macro cell network node.
An apparatus, comprising:
- at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause a network node controlling a macro cell of a cellular communication system to:
- configure at least one handover trigger related signaling configuration for at least one terminal device of the cellular communication system;
- receive as a result of said signaling configuration, an uplink message forwarded by a local area access node, the local area access node included in a plurality of local area access nodes that receive the uplink broadcast transmission and receiving the uplink message broadcasted from the at least one terminal device;
- recognize the local area access node as an edge node located on an edge of a coverage area of the macro cell;
- and
- initiate a handover of the terminal device between the macro cell and a neighboring macro cell.
An apparatus, comprising:
- at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause a terminal device to:
- obtain at least one handover trigger related signaling configuration for the terminal device to trigger at least one uplink broadcast transmission when the terminal device is in a coverage area of a local area access node operating on an edge of a coverage area of a macro cell network node;
- and
- cause an uplink broadcast transmission from the terminal device to the local area access node, the local area access node included in a plurality of local area access nodes that receive the uplink broadcast transmission, according to the handover trigger related signaling configuration for forwarding at least part of uplink data to the macro cell network node.
Dependencies are inferred from the claim text.