17916869. Handling of Uplink Listen-Before-Talk Failures for Handover simplified abstract (Telefonaktiebolaget LM Ericsson (publ))
Contents
Handling of Uplink Listen-Before-Talk Failures for Handover
Organization Name
Telefonaktiebolaget LM Ericsson (publ)
Inventor(s)
Jan Christoffersson of Luleå (SE)
Muhammad Ali Kazmi of Sundbyberg (SE)
Handling of Uplink Listen-Before-Talk Failures for Handover - A simplified explanation of the abstract
This abstract first appeared for US patent application 17916869 titled 'Handling of Uplink Listen-Before-Talk Failures for Handover
Simplified Explanation
The invention described in this patent application is a method for a user equipment (UE) to perform handover to a target cell in a wireless network. The method involves performing a first random-access (RA) procedure in the target cell's first RA resources. If the first RA procedure fails, the UE refrains from declaring a radio link failure (RLF) for the target cell and instead performs a second RA procedure in different RA resources of the target cell. The UE declares a RLF for the target cell if both the first and second RA procedures fail, or if a timer expires before the second RA procedure is successfully completed.
- The method involves performing a first RA procedure in the target cell's first RA resources.
- If the first RA procedure fails, the UE refrains from declaring a RLF for the target cell.
- The UE then performs a second RA procedure in different RA resources of the target cell.
- A RLF for the target cell is declared if both the first and second RA procedures fail, or if a timer expires before the second RA procedure is successfully completed.
Potential applications of this technology:
- This method can be applied in wireless networks to improve handover performance for user equipment.
- It can be used to ensure a smooth transition of the UE from one cell to another without interruptions in the network connection.
Problems solved by this technology:
- The method addresses the issue of failed RA procedures during handover, which can lead to disruptions in the network connection.
- By refraining from declaring a RLF for the target cell and attempting a second RA procedure, the method increases the chances of successful handover.
Benefits of this technology:
- The method improves the reliability and efficiency of handover procedures in wireless networks.
- It reduces the likelihood of network connection failures during handover, resulting in a better user experience.
- By declaring a RLF only after multiple failed RA procedures or a timer expiration, the method avoids premature handover failures.
Original Abstract Submitted
The invention relates to a method in a user equipment, UE, for performing handover to a target cell in a wireless network, the method comprising performing () a first random-access, RA, procedure in first RA resources of the target cell, in response to failure of the first RA procedure, refraining () from declaring a radio link failure, RLF, for the target cell and performing a second RA procedure in second RA resources of the target cell that are different from the first RA resources; and declaring () a RLF for the target cell based on failure of the first RA procedure and a failure of the second RA procedure, or an expiration of a timer before successful completion of the second RA procedure; the invention further relates to a UE implementing the method, to a corresponding method in a network node and a network node implementing the method.
