Method and apparatus for avoiding in-device coexistence interference

摘要

A method, system and device are provided for avoiding in-device coexistence interference between different radio technologies deployed in adjacent bands on the same device by controlling and separating the LTE signaling and the non-LTE signaling using dedicated time intervals to separate LTE signaling from non-LTE signaling. In addition, coexistence mode handover procedures are provided which use threshold-based triggering events to avoid coexistence interference and to prevent ping-pong effects by establishing a “keeping time” parameter so that a non-interfering network node does not switch back to an interfering network node after handoff. Coexistence interference is also avoided by providing a hybrid automatic repeat request (HARQ) mechanism which accounts for coexistence interference by providing a fixed or variable on-interval parameter and an activity parameter indicating whether non-LTE activity is present to maximize a time interval for non-LTE devices without interference from LTE activity on the same device.

主权项

1. A method for use in user equipment (UE) comprising first and second radio technology components on a single platform, comprising:
sending a coexistence request message to convey one or more proposed control parameters for establishing a coexistence mode with first and second signaling intervals for the first and second radio technology components, where sending the coexistence request message comprises sending an RRC signaling message to convey the one or more proposed control parameters, and the one or more proposed control parameters comprise a Start Time Offset parameter specifying a start time for a coexistence mode, a Keeping Time parameter specifying an end time for the coexistence mode, and On-Interval parameter specifying a time duration for the first signaling interval, an Off-Interval parameter specifying a time duration for the second signaling interval, and a Possible Link parameter specifying a type of activity of the first radio technology component during the second signaling interval; receiving a response message comprising one or more control parameters for establishing the first and second signaling intervals for the first and second radio technology components, where the first and second signaling intervals are alternated during the coexistence mode; enabling the first radio technology component with the one or more control parameters to use radio resources on the UE during the first signaling interval without interference to/from the second radio technology component; and enabling the second radio technology component with the one or more control parameters to use radio resources on the UE during the second signaling interval without interference to/from the first radio technology component.