Random access via bandwidth switching

JP7880457B2Active Publication Date: 2026-06-25NOKIA TECHNOLOGIES OY
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
NOKIA TECHNOLOGIES OY
Filing Date
2025-03-17
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing communication systems face inefficiencies in random access procedures due to collisions and resource mismanagement when multiple user equipments (UEs) attempt to access the network simultaneously, particularly in scenarios where the active uplink bandwidth part (BWP) does not support random access channels.

Method used

The solution involves autonomously switching from a first uplink bandwidth part that does not support a random access channel to a second bandwidth part that supports a random access channel after the triggering of a random access procedure. The solution involves autonomously switching from a first uplink bandwidth part that does not support a random access channel to a second uplink bandwidth part that supports a random access channel.

Benefits of technology

This approach enhances network efficiency by allowing user equipment to perform random access procedures without network awareness, reducing resource wastage and improving throughput by preventing incorrect scheduling and conserving battery power.

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Abstract

To provide improved random access operations from which various communication systems may benefit.SOLUTION: Certain embodiments may benefit from improved random access in which multiple bandwidth parts are configured to user equipment within one cell. A method, in certain embodiments, may include triggering a random access procedure at user equipment. The method may also include switching at the user equipment from a first uplink bandwidth part that does not support a random access channel to a second uplink bandwidth part that has the random access channel configured after the triggering of the random access procedure. The switching may be autonomously performed by the user equipment. In addition, the method may include performing the random access procedure at the user equipment using the random access channel configured at the second uplink bandwidth part.SELECTED DRAWING: Figure 1
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