PUSCH Slot Aggregation for Early Data Transmission in NR
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Solution Overview
Problem
The existing communication technologies, particularly in NR systems, face challenges in meeting the requirements for early data transmission due to limitations in data packet size and resource utilization efficiency.
Innovation Solution
A method and apparatus for implementing early data transmission in NR systems by using slot aggregation of the physical uplink shared channel (PUSCH) in a random access procedure, allowing for larger data packet sizes and efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal frequently establishes RRC connections to transmit small data packets, then the data transmission can be completed, but the utilization efficiency of radio resources is reduced and a large quantity of resources are used for RRC connection establishment procedure
Solution Approach 1:
The patent applies preliminary action by allowing the terminal to transmit uplink data in advance during the random access procedure (before RRC connection establishment) and receiving downlink data in advance during the random access procedure (before RRC connection establishment). This enables small data packets to be transmitted without completing the full RRC connection establishment process, thereby improving radio resource utilization efficiency while ensuring data transmission completion.
2Loss of energy
If the terminal transmits small data packets without entering connected state using EDT technology, then radio resource utilization efficiency is improved, but the maximum size of data packet is limited to 56 bits which cannot meet NR system requirements
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the data packet size parameter supported during early data transmission. By configuring the terminal with appropriate parameters during the random access procedure, the system enables data packet sizes exceeding the traditional 56-bit limit while maintaining the benefits of EDT technology, thus resolving the contradiction between resource efficiency and packet size capacity.
3Quantity of substance
If slot aggregation of PUSCH is used for early data transmission, then larger data packet sizes are supported, but resource occupation increases
Solution Approach 1:
The patent applies partial action by implementing slot aggregation selectively rather than universally. The system configures slot aggregation parameters based on the actual data transmission requirements, enabling larger data packets only when necessary. This partial application of slot aggregation maintains support for large data packets while minimizing unnecessary resource occupation, resolving the contradiction between packet size capability and resource usage.
Data Source
AI summary
A method includes that a terminal receives first indication information from a network device, where the first indication information is used for early data transmission, and the first indication information includes slot aggregation information of a physical uplink shared channel PUSCH in a random access procedure; and the terminal performs early data transmission based on the first indication information. Slot aggregation of a PUSCH is used to implement early data transmission of a large data packet.