Method and apparatus related to wire line backhaul
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsPer-Erik Eriksson, Miguel Berg, Chenguang Lu, Elmar Trojer
Life of this patent
Estimating the term…
Abstract
Presented are methods and arrangements for adapting the load in a cell based on information on upcoming events related to a backhaul link. The upcoming events related to the backhaul link may be delayed in order to give enough time for an RBS to complete activities related to the load adaptation. Thus, UEs may be handed over to neighboring cells proactively, before the cell becomes overloaded due to events related to the backhaul link.
Claims22
A method performed by a Radio Base Station (RBS) being associated with communication over a wire line backhaul link, and further serving a number of User Equipment's (UEs), the method comprising:
- collecting information about the backhaul link from a backhaul communication entity;
- determining, based on said information, whether a procedure is about to be performed which entails that the capacity of the backhaul link will be reduced;
- estimating the capacity of the backhaul link after the forthcoming capacity reduction;
- determining whether a traffic load of the RBS, said load being associated with the serving of UEs, exceeds the estimated backhaul link capacity after the forthcoming capacity reduction;
- when the traffic load is determined to exceed the estimated backhaul link capacity after the forthcoming capacity reduction:
- reducing the traffic load associated with the serving of UEs, in accordance with the estimated capacity of the backhaul link after the forthcoming capacity reduction;
- and
- indicating to the backhaul communication entity that the traffic load has been reduced in accordance with the estimated capacity of the backhaul link, thus indicating that the procedure entailing reduced backhaul link capacity may be started.
A Radio Base Station (RBS) operable to communicate over a wire line backhaul link, and further operable to serve a number of User Equipments (UEs), the RBS comprising:
- a collecting unit adapted to collect information about the backhaul link from a backhaul communication entity;
- a determining unit adapted to determine, based on said information, whether a procedure is about to be performed, which entails that the capacity of the backhaul link will be reduced;
- an estimating unit adapted to estimate the capacity of the backhaul link after the forthcoming capacity reduction;
- and
- the determining unit being further adapted to determine whether a traffic load of the RBS, said load being associated with the serving of UEs, exceeds the estimated backhaul link capacity after the forthcoming capacity reduction;
- and
- a control unit adapted to reduce the traffic load associated with serving of UEs, in accordance with the estimated capacity of the backhaul link after the forthcoming capacity reduction when the traffic load is determined to exceed said estimated capacity of the backhaul link, and indicate to the backhaul communication entity that the traffic load has been reduced in accordance with the estimated capacity of the backhaul link, thus indicating that the procedure entailing reduced backhaul link capacity may be started.
A method performed by a backhaul communication entity associated with a wire line backhaul link at a Radio Base Station (RBS), the method comprising:
- receiving an indication of a forthcoming procedure related to the backhaul link from an aggregation node, which indication is to be acknowledged by the backhaul communication entity for the procedure to start;
- and
- before acknowledging the indication of a forthcoming procedure, awaiting at least one of:
- an indication from the RBS;
- or
- the elapse of a predefined time period,
- thereby enabling the RBS to adapt a traffic load associated with UEs served by the RBS to a backhaul link capacity reduction caused by the procedure, before the performing of the procedure.
A backhaul communication device, connectable to a wire line for backhaul link communication at a Radio Base Station (RBS), the backhaul communication device comprising:
- a receiving unit adapted to receive, from an aggregation node, an indication of a forthcoming procedure related to the backhaul link, which indication is to be acknowledged by the backhaul communication entity for the procedure to start;
- an acknowledgement unit, adapted to await at least one of:
- an indication from the RBS;
- or
- the elapse of a predefined time period,
- before acknowledging the indication of a forthcoming procedure.
Dependencies are inferred from the claim text.