Overload Control in a Communication Network
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorJohan RUNE
Life of this patent
Estimating the term…
Abstract
Disclosed are methods as well radio network nodes and user equipments (UE) that are suitable for overload control in a communication network. A radio network node may, upon receiving a random access preamble from an UE, determine whether there exists an overload condition. In response to a determination that an overload condition exists, the radio network node may configure a MAC PDU220 to accompany a E/T/RAPID subheader 212 with a request to extend the time period during which the UE waits for reception of a MAC RAR response.
Claims28
A method performed by a radio network node for overload control in a communication network, the method comprising:
- receiving a random access preamble from a user equipment, UE;
- determining whether an overload condition exists;
- and in response to determining that an overload condition exists
- configuring a Medium Access Control, MAC, Protocol Data Unit, PDU, to accompany a Random Access Preamble Identifier, RAPID, subheader with a request to extend the time period during which the UE waits for reception of a MAC Random Access Response, RAR;
- and
- transmitting the RAPID subheader and the accompanying request to the UE.
A method performed by a user equipment, UE, the method comprising:
- transmitting a random access preamble to a radio network node;
- receiving a RAPID subheader and an accompanying request to extend the time period during which the UE waits for reception of a MAC Random Access Response, RAR, from the radio network node;
- and in response thereto
- starting a timer and monitoring a Physical Downlink Control Channel, PDCCH, for reception of the MAC RAR until the timer has reached a maximum time limit, the maximum time limit corresponding to the extended time period.
A radio network node comprising:
- a receiver configured to receive a random access preamble from a user equipment, UE;
- a transmitter;
- a processor;
- and
- a memory storing computer program code, which, when run in the processor causes the radio network node to:
- determine whether an overload condition exists;
- and in response to determining that an overload condition exists,
- configure, a Medium Access Control, MAC, Protocol Data Unit, PDU, to accompany a Random Access Preamble Identifier, RAPID, subheader, with a request to extend the time period during which the UE waits for reception of a MAC Random Access Response, RAR;
- and
- transmit, via the transmitter, the RAPID subheader and the accompanying request to the UE.
A user equipment, UE, comprising:
- a transmitter configured to transmit, to a radio network node, a random access preamble;
- a receiver configured to receive a Random Access Preamble Identifier, RAPID, subheader and an accompanying request to extend the time period during which the UE waits for reception of a MAC Random Access Response, RAR, from the radio network node;
- and
- a processor;
- and
- a memory storing computer program code, which, when run in the processor (920) causes the UE to, in response to a reception of said request:
- start a timer and monitor a Physical Downlink Control Channel, PDCCH for reception, via the receiver, of the MAC RAR until the timer has reached a maximum time limit, the maximum time limit corresponding to the extended time period.
Dependencies are inferred from the claim text.