Method and arrangement for load balancing in a wireless communication system
First Claim
1. A method for load balancing in a wireless communication system, said system providing a wireless service to at least one active user equipment, wherein a radio base station gateway is connected to at least two core network control nodes and to at least two radio base stations, said method characterised by the following steps, performed by the radio base station gateway:
- receiving a command for releasing a signaling connection associated with a user equipment due to load balancing, the command received from one of the core network control nodes in which at least one of said active user equipments is registered,receiving a message comprising a request for a signaling connection to a core network control node and a load balancing establishment cause, the message received from one of the radio base stations, andselecting a core network control node based on said load balancing establishment cause, when establishing the requested signaling connection.
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Accused Products
Abstract
The present invention relates to methods and arrangements in a wireless communication system that enable a load balancing procedure in a network with HeNB GWs. The problem of the ineffective conventional load balancing procedure when used in a network with HeNB GWs, is addressed by a solution where the HeNB includes (510) an explicit indication of the reason for radio link establishment (load balancing establishment cause) in the S1AP INITIAL UE MESSAGE message (511) used to establish the S1 signaling connection associated with a user equipment to an MME, so that the HeNB GW (550) can perform an accurate MME selection based on the knowledge that the establishment is due to load balancing, i.e. an MME selection that realizes the required inter-MME load balancing.
26 Citations
32 Claims
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1. A method for load balancing in a wireless communication system, said system providing a wireless service to at least one active user equipment, wherein a radio base station gateway is connected to at least two core network control nodes and to at least two radio base stations, said method characterised by the following steps, performed by the radio base station gateway:
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receiving a command for releasing a signaling connection associated with a user equipment due to load balancing, the command received from one of the core network control nodes in which at least one of said active user equipments is registered, receiving a message comprising a request for a signaling connection to a core network control node and a load balancing establishment cause, the message received from one of the radio base stations, and selecting a core network control node based on said load balancing establishment cause, when establishing the requested signaling connection. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for load balancing in a wireless communication system, said system providing a wireless service to at least one active user equipment, wherein a radio base station gateway is connected to at least two core network control nodes and to at least two radio base stations, said method characterised by the following steps, performed by a radio base station,
receiving a connection request from a user equipment, said connection request initiating a connection establishment and comprising a load balancing establishment cause, sending a first message to the radio base station gateway, said first message comprising a request for a signaling connection to a core network control node and a load balancing establishment cause.
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12. A method for load balancing in a wireless communication system, said system providing a wireless service to at least one active user equipment, wherein a radio base station gateway is connected to at least two core network control nodes and to at least two radio base stations, said method characterised by the following steps, performed by a user equipment,
transmitting a connection request to a radio base station, said connection request initiating a connection establishment and comprising a load balancing establishment cause, and transmitting an identity of a core network control node in which said user equipment is registered.
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17. A radio base station gateway for a wireless communication system adapted to provide a wireless service to at least one active user equipment, said radio base station gateway connectable to at least two core network control nodes and to at least two radio base stations, and characterised in that it comprises:
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a command receiving unit, arranged to receive a command for releasing a signaling connection associated with a user equipment due to load balancing, the command received from one of the core network control nodes in which at least one of said active user equipments is registered, a message receiving unit, arranged to receive a message comprising a request for a signaling connection to a core network control node and a load balancing establishment cause, the message received from one of the radio base stations, and a selecting unit, arranged to select a core network control node based on said load balancing establishment cause when establishing the requested signaling connection. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A radio base station for a wireless communication system adapted to provide a wireless service to at least one active user equipment, the radio base station connectable to a radio base station gateway, said gateway connectable to at least two core network control nodes, and the radio base station characterised in that it comprises,
a receiving unit, arranged to receive a connection request from a user equipment, said connection request initiating a connection establishment and comprising a load balancing establishment cause, a sending unit, arranged to send a first message to the radio base station gateway, said first message comprising a request for a signaling connection to a core network control node and a load balancing establishment cause.
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28. A user equipment for a wireless communication system comprising a radio base station gateway connectable to at least two core network control nodes and to at least two radio base stations, said user equipment characterised in that it comprises:
a transmitter, arranged to transmit a connection request to a radio base station, said connection request initiating a connection establishment and comprising a load balancing establishment cause, and said transmitter further arranged to transmit an identity of a core network control node in which said user equipment is registered, to the radio base station. - View Dependent Claims (29, 30, 31, 32)
Specification