Random Access Preamble Selection for Wireless Payload Configuration
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently selecting random access preambles and associated payload formats during the random access procedure, which affects connection establishment and resource allocation.
Innovation Solution
A method is introduced where a user equipment (UE) receives a configuration indicating multiple association rules between random access preambles and payload formats, allowing it to select a random access preamble and determine the associated payload format and resource unit for transmitting a first message in a two-step random access procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple association rules are configured between random access preambles and payload formats, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by configuring multiple association rules that map random access preambles to different payload formats based on varying parameters such as payload size, transmission power, and resource allocation. The UE selects appropriate association rules based on current transmission requirements, enabling flexible resource allocation without hardcoding complex selection logic in the device.
Solution Approach 2:
The patent implements dynamics by making the preamble-payload format association configurable and adaptable rather than fixed. The system can dynamically adjust which association rule is applied based on channel conditions, traffic type, and resource availability, allowing the random access procedure to adapt to changing network conditions while maintaining manageable device complexity through standardized configuration mechanisms.
2Productivity
If payload formats are determined based on association rules, then random access procedure efficiency is improved, but signal processing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple association rules that define the mapping between random access preambles and payload formats before the actual random access procedure. The UE and base station both receive and store these configuration rules in advance, so that during the random access procedure, the appropriate payload format can be quickly determined by simple rule matching rather than complex real-time analysis, thereby improving procedure efficiency while keeping signal processing complexity manageable.
Data Source
AI summary
Aspects described herein relate to receiving a configuration indicating multiple association rules associating random access preambles and payload formats, selecting, as part of a random access procedure, a random access preamble from the random access preambles for transmitting over a random access occasion, determining, based at least in part on at least one of the association rules in the configuration, a payload format associated with the random access preamble and a corresponding payload resource unit, and transmitting the random access preamble over the random access occasion and, according to the payload format, an associated payload over the corresponding payload resource unit. Multiplexing of payload resource units with same or different payload formats can be performed in time, frequency and code domains, based on the received configuration.