LTE Inactive State Uplink Resource Allocation for Multi-Packet Transmission
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Solution Overview
Problem
Current data transmission methods in LTE systems can only support single packet data transmission, leading to increased signaling overhead and power consumption when handling multiple consecutive packet data transmissions, as terminals often need to switch between connected and idle states.
Innovation Solution
A new data transmission method that allows continuous transmission of multiple packet data by enabling terminals to remain in an inactive state and using RRC resume requests with indication information to manage uplink transmission resources dynamically, reducing the need for frequent state changes and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminals switch between connected and idle states for multiple consecutive packet data transmissions, then data transmission can be performed, but signaling overhead and power consumption increase
Solution Approach 1:
The network device pre-configures uplink transmission resources for the terminal in the inactive state, allowing the terminal to perform multiple uplink transmissions without transitioning to connected state. This preliminary resource allocation eliminates the need for frequent state switching and reduces power consumption while maintaining data transmission capability.
Solution Approach 2:
The patent introduces a dynamic resource allocation mechanism where the network device can flexibly grant uplink transmission resources to terminals in inactive state based on actual transmission needs. The resource allocation is adapted to the number of packets to be transmitted, enabling efficient energy utilization without compromising transmission productivity.
2Productivity
If terminals switch between connected and idle states for multiple consecutive packet data transmissions, then data transmission can be performed, but signaling overhead increases
Solution Approach 1:
The network device sends pre-configured uplink transmission resource information to the terminal before the terminal needs to transmit data. This preliminary action includes resource grants that enable multiple transmissions without requiring the terminal to repeatedly request resources or switch states, thereby reducing signaling overhead while maintaining transmission capability.
Solution Approach 2:
The patent extracts the resource allocation and management functions from the connected state transition process and implements them directly in the inactive state. By taking out the state switching requirement and replacing it with in-state resource management, the signaling overhead is reduced while data transmission productivity is maintained.
3Device complexity
If only single packet data transmission is supported, then system complexity is reduced, but transmission efficiency decreases for multiple packets
Solution Approach 1:
The patent segments the resource allocation process into multiple independent grants that can be applied to multiple packets. Instead of requiring a single connected state transition for all transmissions, the system divides the transmission task into multiple smaller units that can be handled independently in the inactive state, improving efficiency without significantly increasing system complexity.
Solution Approach 2:
The inactive state is enhanced to perform multiple functions: it not only maintains connectivity but also supports multiple uplink transmissions with pre-configured resources. This multi-functionality allows the same state to handle both single and multiple packet transmissions efficiently, improving productivity without requiring additional complex states or mechanisms.
Data Source
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AI summary
A data transmission method and apparatus, a network device, and a terminal are provided. The method includes: receiving first indication information sent by a terminal by a target base station, where the first indication information is configured to indicate a number of packet data to be sent by the terminal and/or whether the packet data to be sent exists; and sending first configuration information to the terminal by the target base station, where the first configuration information is used by the terminal to determine at least one uplink transmission resource corresponding to at least one of the packet data to be sent.