Method and Arrangement for Managing Radio Link Failure
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsDaniel Larsson, Stefan Johansson, Peter Östrup
Life of this patent
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Abstract
In a method of managing radio link failure based on the RRC protocol in a user equipment node communicating over a radio link with a radio base station node in a wireless communication system, the user equipment node detecting (S10) a radio link failure. Subsequently, the user equipment node transmitting (S20) a RRC connection reestablishment request for the failed radio link, and receiving (S30) a RRC connection reject message together with redirection information indicating an alternative radio link to another radio base station node. Finally, the user equipment transmitting (S40) a RRC connection request based on the redirection information to the other radio base station node.
Claims17
1-10. (canceled)
A method implemented by a user equipment node for managing radio link failure based on the Radio Resource Control (RRC) protocol, the user equipment node configured to communicate over a radio link with a radio base station node in a wireless communication system, said method comprising:
- detecting radio link failure of said radio link with said radio base station node;
- transmitting an RRC connection reestablishment request for said failed radio link,
- receiving an RRC connection reject message together with redirection information indicating an alternative radio link to another radio base station node, and
- transmitting an RRC connection request, based on said redirection information, to said other radio base station node.
A method implemented by a radio base station node for managing radio link failure based on the RRC protocol, said radio base station node configured to communicate over a radio link with a user equipment node in a wireless communication system, said method comprising:
- receiving an RRC connection reestablishment request from said user equipment node for radio link failure of said radio link;
- and
- transmitting an RRC connection reestablishment reject message to the user equipment together with redirection information indicating an alternative radio link to another radio base station node.
A user equipment node in a wireless communication system, comprising:
- a detector configured to detect a failed radio link with a base station node;
- a connection reestablishment requester configured to transmit a Radio Resource Control (RRC) connection reestablishment request for said failed radio link;
- a receiver configured to receive an RRC connection reject message together with redirection information indicating an alternative radio link to another radio base station node, and
- a connection requester configured to transmit an RRC connection request, based on said redirection information, to said other radio base station node.
A radio base station node in a wireless communication system, comprising:
- a receiver configured to receive an RRC connection reestablishment request from a user equipment node for a failed radio link with a base station node;
- a provider configured to transmit an RRC connection reestablishment reject message to the user equipment together with redirection information indicating an alternative radio link to another radio base station node.
Dependencies are inferred from the claim text.