User Equipment Handover via Pre-Allocated Uplink Resources
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Solution Overview
Problem
Existing user equipment handover methods in communications technologies are inefficient due to the need for a random access procedure to contend for an uplink resource, resulting in a large number of steps and a long time consumption during handover.
Innovation Solution
A method where user equipment sends a measurement report to request a handover, and the destination network device allocates a discontinuous physical uplink shared channel resource, allowing the user equipment to directly use this resource for communication without performing a random access procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a random access procedure is performed to contend for an uplink resource during handover, then the uplink resource can be obtained, but the handover time is extended and handover efficiency is reduced
Solution Approach 1:
The target base station pre-allocates uplink resources to the user equipment before the handover is executed. The source base station forwards this resource allocation information to the user equipment during the handover process, allowing the user equipment to directly use the pre-assigned uplink resources without performing a random access procedure, thereby reducing handover time while ensuring reliable uplink resource acquisition
2Reliability
If a random access procedure is performed during handover, then uplink resource contention is resolved, but the number of handover steps increases
Solution Approach 1:
The invention extracts and removes the random access procedure from the handover process. By pre-allocating uplink resources at the target base station and forwarding the resource information through the source base station, the patent eliminates the need for the user equipment to perform random access, contention resolution, and uplink resource request steps, thereby simplifying the handover procedure while maintaining reliable uplink resource allocation
Data Source
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AI summary
The present invention relates to the field of communications technologies, and in particular, to a user equipment handover method, and a device, so as to resolve a technical problem of relatively low handover efficiency during a handover of user equipment. In embodiments of the present invention, when a handover is to be performed, user equipment may send first information that is used to request a handover, and then a destination network device may allocate a first uplink resource to the user equipment. In this way, the user equipment may directly send information to the destination network device by using the first uplink resource, and does not need to contend for an uplink resource by performing a random access procedure, thereby improving handover efficiency of the user equipment.