Methods for Maintaining an Ongoing Communication Even After Site Outage
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorBadawi Yamine
Life of this patent
Estimating the term…
Abstract
An entity in a wireless network 100 retains contexts for each wireless terminal 140 served by a serving cell in a serving Radio Node (RN) 110 after that serving cell experiences an outage. The contexts may be retained by the serving RN 110 of the serving cell and/or by the wireless terminal served by the serving cell. The retained contexts are then provided to neighbor RNs 120 to facilitate connection reestablishment for the wireless terminals 140 previously served by the serving cell now experiencing an outage with a neighbor cell, e.g., another cell in the serving RN 110 or a neighbor cell in a neighbor RN 120.
Claims26
A method of maintaining wireless communications after a cell outage in a wireless network comprising a serving Radio Node (RN) and neighbor RNs, the method implemented by the serving RN and comprising:
- in response to an outage of a serving cell in the serving RN, retaining a context for each of one or more active wireless terminals served by the serving cell before the outage, each context comprising information used to maintain wireless communications in the wireless network for a specific one of the active wireless terminals;
- and
- providing at least one of the retained contexts to at least one of the neighbor RNs to facilitate connection reestablishment between the corresponding active wireless terminal and a neighbor cell of the serving RN or the neighbor RNs.
A method of maintaining wireless communications after a cell outage in a wireless network comprising a serving Radio Node (RN) and a neighbor RN, the method implemented by the neighbor RN and comprising:
- in response to an outage of a serving cell in the serving RN, obtaining from the serving RN a context for each of one or more active wireless terminals served by the serving cell before the outage, each context comprising information used to maintain wireless communications in the wireless network for a specific one of the active wireless terminals;
- and
- implementing connection reestablishment with at least one of the one or more active wireless terminals using the obtained corresponding context.
A method of maintaining wireless communications after a cell outage in a wireless network comprising a serving Radio Node (RN) and neighbor RNs, the method implemented by an active wireless terminal served by a serving cell in the serving RN and comprising:
- responsive to determining an outage of the serving cell in the serving RN, starting a context timer, said context timer having a duration less than a radio link failure timer controlled by the wireless network;
- responsive to expiration of the context timer:
- storing a context comprising information specific to the active wireless terminal used to maintain wireless communications in the wireless network;
- and
- triggering connection reestablishment with a neighbor cell in the serving RN or a neighbor RN using the stored context.
A method of maintaining wireless communications after a cell outage in a wireless network, the method implemented by an Operating Support System (OSS) supporting a serving RN and neighbor RNs, the method comprising:
- in response to an outage of a serving cell in the serving RN, receiving from the serving RN a context for each of one or more active wireless terminals served by the serving cell before the outage, each context comprising information used to maintain wireless communications in the wireless network for a specific one of the active wireless terminals;
- and
- providing at least one of the received contexts to at least one of the neighbor RNs to facilitate connection reestablishment between the corresponding active wireless terminal and a neighbor cell of the serving RN or the neighbor RNs.
Dependencies are inferred from the claim text.