Apparatus and method for operating a communications device in a mobile communications network
AssigneeM-Stack Limited
InventorsDavid Winstone Pedlar, Gjalt Gerritt De Jong, Nicola M. Funnell
Life of this patent
Estimating the term…
Abstract
Apparatus and a method for handling discard of a service data unit in universal mobile telecommunications system user equipment. Strategies for the radio resource control entity to handle discard of a service data unit by the radio link control entity are presented.
Claims11
A method of operating a user equipment (UE) configurable for use in a Universal Mobile Telecommunications System (UMTS), the UE comprising a physical layer, a user layer, a radio resource control (RRC) layer, and a radio link control (RLC) layer compliant for use in a UMTS, comprising:
- submitting, from the RRC layer, an SDU to the RLC layer for transmission;
- measuring elapsed time since the SDU was submitted in the RRC layer;
- detecting that the elapsed time has reaching a predetermined timeout value;
- causing the RRC layer to resubmit the previously submitted SDU to the RLC layer;
- measuring the elapsed time since the resubmitted SDU was resubmitted to the RLC layer;
- repeating the resubmission and associated elapsed time at most N times;
- and
- causing the RRC layer to submit an unrecoverable error message to the RLC layer for transmission, if there have been N resubmissions.
A method of operating a user equipment (UE) configurable for use in a Universal Mobile Telecommunications System (UMTS), the UE comprising a physical layer, a user layer, a radio resource control (RRC) layer, and a radio link control (RLC) layer compliant for use in a UMTS, comprising:
- submitting, from the RRC layer, an SDU to the RLC layer for transmission;
- measuring elapsed time since the SDU was submitted in the RRC layer;
- detecting that the elapsed time has reaching a predetermined timeout value;
- causing the RRC layer to resubmit the previously submitted SDU to the RLC layer;
- measuring the elapsed time since the resubmitted SDU was resubmitted to the RLC layer;
- repeating the resubmission and associated elapsed time at most N times;
- causing the RRC layer to submit a first message, the first message different than the SDU, to the RLC layer for transmission if there have been N resubmissions;
- and
- receiving, by the UE, a second message after having transmitted the first message, where the second message is configured for use by the UE in setting itself to a known state.
A method of operating a user equipment (UE) configurable for use in a Universal Mobile Telecommunications System (UMTS), the UE comprising a physical layer, a user layer, a radio resource control (RRC) layer, and a radio link control (RLC) layer compliant for use in a UMTS, comprising:
- submitting, from the RRC layer, an SDU to the RLC layer for transmission;
- measuring elapsed time since the SDU was submitted in the RRC layer;
- detecting that the elapsed time has reaching a predetermined timeout value;
- causing the RRC layer to resubmit the previously submitted SDU to the RLC layer;
- measuring the elapsed time since the resubmitted SDU was resubmitted to the RLC layer;
- repeating the resubmission and associated elapsed time at most N times;
- and
- causing the RRC layer to release any connection where the connection represents a peer connection to equivalent layers outside of the UE.
Dependencies are inferred from the claim text.