Random Access Preamble and PUSCH Merging for Signaling Overhead Reduction
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Solution Overview
Problem
The traditional four-step random access procedure in cellular systems, such as 5G networks, has a high signaling overhead, which is not suitable for low-delay and high-reliability scenarios.
Innovation Solution
Combining the random access preamble and Physical Uplink Shared Channel (PUSCH) into a single message sent by the terminal device, thereby eliminating the need for separate signaling, reducing the overall signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the traditional four-step random access procedure is used, then the random access function is established, but the signaling overhead is relatively large
Solution Approach 1:
The patent combines the random access preamble and PUSCH into a single message transmitted by the terminal device. This merging eliminates the need for separate signaling of the preamble and PUSCH, directly reducing the signaling overhead while maintaining the random access function establishment.
2Productivity
If the random access preamble and PUSCH are sent using two separate signaling, then the transmission is completed, but the signaling overhead increases
Solution Approach 1:
The patent merges the random access preamble and PUSCH into one unified message that is transmitted in a single step. This combination maintains transmission completion while eliminating redundant signaling, thereby reducing the overall signaling overhead.
Data Source
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AI summary
A random access method and apparatus, the method comprising: a terminal device sending a first message to a network device, the first message comprising a random access preamble and uplink information; the random access preamble occupies at least one first symbol in the time domain, and the uplink information occupies at least one second symbol in the time domain, wherein the one first symbol comprises a first cyclic prefix (CP) and at least one first information segment, and the one second symbol comprises a second CP and at least one second information segment. The random access method and apparatus of an embodiment of the present application may reduce signaling overhead during random access.