Failure event report extension for inter-RAT radio link failure
First Claim
1. A method, comprising:
- detecting a failure event by a user equipment (UE) in a first cell served by a first base station in a wireless communication network, wherein the first cell belongs to a first radio access technology (RAT);
performing a radio resource control (RRC) establishment procedure with a selected second cell served by a second base station, wherein the second cell belongs to a second RAT;
receiving a mobility command by the UE to move a radio connection from the first RAT to the second RAT, wherein the failure event is associated with the mobility command, and wherein the mobility command is a handover command; and
transmitting a failure event report to the wireless communication network, wherein the failure event report comprises logged information related to the failure event, and wherein the logged information also comprises whether the handover command is blind indicating whether the handover is commanded by the network without the UE providing a measurement report of the second cell as a trigger for handover.
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Accused Products
Abstract
A method of inter-RAT failure event report is proposed. A UE detects a failure event in a first cell served by a first base station, and the first cell belongs to a first RAT. The failure event may include a radio link failure or a handover failure. The UE then performs an RRC establishment procedure with a second cell served by a second base station, and the second cell belongs to a second RAT. After the RRC establishment, the UE transmits a failure event report to the wireless network. The failure event can be a radio link failure, or be associated with a mobility command such as a handover command. By providing more reliable information in the failure event report than a network solution could provide, inter-RAT mobility performance can be improved.
41 Citations
18 Claims
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1. A method, comprising:
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detecting a failure event by a user equipment (UE) in a first cell served by a first base station in a wireless communication network, wherein the first cell belongs to a first radio access technology (RAT); performing a radio resource control (RRC) establishment procedure with a selected second cell served by a second base station, wherein the second cell belongs to a second RAT; receiving a mobility command by the UE to move a radio connection from the first RAT to the second RAT, wherein the failure event is associated with the mobility command, and wherein the mobility command is a handover command; and transmitting a failure event report to the wireless communication network, wherein the failure event report comprises logged information related to the failure event, and wherein the logged information also comprises whether the handover command is blind indicating whether the handover is commanded by the network without the UE providing a measurement report of the second cell as a trigger for handover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A user equipment (UE), comprising:
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a failure event management module that detects a failure event in a first cell served by a first base station, wherein the first cell belongs to a first radio access technology (RAT); a connection management module that performs a radio resource control (RRC) establishment procedure with a second cell served by a second base station, wherein the second cell belongs to a second RAT; a receiver that receives a mobility command to move a radio connection from the first RAT to the second RAT, wherein the failure event is associated with the mobility command, and wherein the mobility command is a handover command; and a transmitter that transmits a failure event report to the wireless communication network, wherein the failure event report comprises logged information related to the failure event, and wherein the logged information also comprises whether the handover command is blind indicating whether the handover is commanded by the network without the UE providing a measurement report of the second cell as a trigger for handover. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification