Congestion control within a radio access network
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsMats Sågfors, Paul Teder, Tarmo Kuningas
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Abstract
A method of controlling the volume of user-plane traffic on the Iub or Iub/Iur interface between a Radio Network Controller and a Node B of a UMTS Radio Access Network during periods of overload. The method comprises, for individual uplink or downlink connections established over the Iub or Iub/Iur interface, monitoring at the Radio Network Controller the late arrival of frames at the Radio Network Controller or at the Node B transmitted over the Iub or Iub/Iur interface, and based on the results of said monitoring, causing a reduction in the Iub or Iub/Iur load for a connection when appropriate.
Claims16
A method of controlling the volume of user-plane traffic on the Iub or Iub/Iur interface between a Radio Network Controller and a Node B of a UMTS Radio Access Network during periods of overload, the method comprising:
- for individual uplink or downlink connections established over the Iub or Iub/Iur interface, monitoring at the Radio Network Controller the late arrival of frames carrying user-plane data at the Radio Network Controller or at the Node B transmitted over the Iub or Iub/Iur interface, wherein said monitoring comprises counting the number of Timing Adjust frames for the downlink direction and late arriving frames in the uplink direction, and comparing the count value to some threshold value;
- and
- based on the results of said monitoring, causing a reduction in the Iub or Iub/Iur load for a connection when the count is equal to or exceeds the threshold value.
A method of controlling the volume of user-plane traffic on the Iub or Iub/Iur interface between a Radio Network Controller and a Node B of a UMTS Radio Access Network during periods of overload, the method comprising:
- for individual downlink connections established over the Iub or Iub/Iur interface, monitoring at the Node B the late arrival of frames carrying user-plane data at the Node B transmitted over the Iub or Iub/Iur interface, wherein said monitoring comprises counting the number of Timing Adjust frames for the downlink direction and late arriving frames in the uplink direction, and comparing the count value to some threshold value;
- and
- based on the results of said monitoring causing a reduction in the Iub or Iub/Iur load for a connection when the count is equal to or exceeds the threshold value.
A method of controlling the volume of user-plane traffic on the Iub or Iub/Iur interface between a Radio Network Controller and a Node B of a UMTS Radio Access Network during periods of overload, the method comprising:
- for individual uplink or downlink connections established over the Iub or Iub/Iur interface, monitoring the late arrival of frames carrying user-plane data at the Radio Network Controller or at the Node B transmitted over the Iub or Iub/Iur interface, wherein said monitoring comprises counting the number of Timing Adjust frames for the downlink direction and late arriving frames in the uplink direction, and comparing the count value to some threshold value;
- and
- based on the results of said monitoring, causing a reduction in the Iub or Iub/Iur load when the count is equal to or exceeds the threshold value by restricting the allowed transport formats available to the sending Medium Access Control entity on a per connection basis.
A Radio Network Controller node configured to control the volume of user-plane traffic on the Iub or Iub/Iur interface between the Radio Network Controller and a Node B of a UMTS Radio Access Network during periods of overload, the Radio Network Controller comprising:
- monitoring circuitry configured to monitor a late arrival of frames carrying user-plane data at the Radio Network Controller or at the Node B transmitted over the Iub or Iub/Iur interface for individual uplink or downlink connections established over the Iub or Iub/Iur interface, wherein said monitoring comprises counting the number of Timing Adjust frames for the downlink direction and late arriving frames in the uplink direction, and comparing the count value to some threshold value;
- and
- load control circuitry configured to cause a reduction in the Iub or Iub/Iur load for a connection when the count is equal to or exceeds the threshold value based on monitoring information generated by the monitoring circuitry.
Dependencies are inferred from the claim text.