TTI Bundling Policy for Medium and High Data Rate Coverage
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Solution Overview
Problem
Current LTE systems with TTI bundling transmission manner are limited in supporting medium-data rate and high-data rate services due to the restricted use of frequency and time domain resources, resulting in limited coverage for these services.
Innovation Solution
A method where a base station determines a TTI bundling transmission policy for a terminal based on its transmission attributes, allowing for flexible allocation of resources, enabling the terminal to support low, medium, and high-data rate services by adjusting the number of resource blocks, transport block size, and RTT, thereby enhancing coverage without increasing terminal complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the terminal uses a limited quantity of resource blocks (3 RB at most) in TTI bundling transmission, then the terminal complexity is reduced, but the data rate is limited to low-data rate services only
Solution Approach 1:
The patent introduces dynamic resource allocation where the base station determines a TTI bundling transmission policy based on terminal transmission attributes, allowing the quantity of resource blocks to be dynamically adjusted from 3 RB to up to 100 RB depending on service requirements. This dynamic adjustment enables the system to adapt between low-complexity and high-performance modes.
Solution Approach 2:
The patent changes the parameter of resource block quantity from a fixed value (3 RB) to a variable parameter that can range from 3 to 100 RB. This parameter change is controlled by the base station based on terminal attributes and service type, enabling the system to support both low-data rate and medium/high-data rate services while managing terminal complexity.
2Device complexity
If the terminal uses a small quantity of frequency domain resources and time domain resources in TTI bundling, then the terminal complexity is reduced, but the coverage of medium-data rate and high-data rate services is severely limited
Solution Approach 1:
The patent implements dynamic resource allocation policies where the base station determines appropriate resource block quantities and transport block sizes based on terminal transmission attributes and service requirements. This allows the system to expand service coverage for medium and high data rate services while keeping terminal complexity manageable through base station-controlled resource management.
Solution Approach 2:
The patent introduces multiple parameter changes including resource block quantity (from 3 to 100 RB), transport block size, and RTT configuration. These parameter changes enable the system to support diverse service types with different coverage requirements while maintaining terminal complexity at acceptable levels through standardized terminal attributes and base station policies.
3Device complexity
If the TTI bundling transmission manner is used with fixed resource limitations, then the terminal complexity is reduced, but the adaptability to different data rate services is insufficient
Solution Approach 1:
The patent creates a dynamic resource allocation framework where terminals report their transmission attributes to the base station, which then determines appropriate TTI bundling transmission policies. This dynamic interaction enables terminals to adapt to different service types (low, medium, and high data rate services) without increasing their inherent complexity, as the adaptation is managed by the network side.
Solution Approach 2:
The patent introduces multiple configurable parameters including resource block quantity, transport block size, and RTT values that can be adjusted based on service requirements. These parameter changes are controlled through base station policies determined by terminal attributes, enabling the system to support diverse service types while maintaining terminal simplicity.
Data Source
AI summary
Embodiments of the present disclosure provide a method for transmitting service data, a terminal, and a base station. The method includes: a terminal sends a transmission attribute of the terminal to a base station, wherein the transmission attribute of the terminal is used for a determination of a transmission time interval (TTI) bundling transmission policy of the terminal; receives a TTI bundling transmission indication from the base station; determines a TTI bundling transmission policy of the terminal according to the transmission attribute of the terminal; and sends service data to the base station in a TTI bundling transmission manner according to the TTI bundling transmission policy of the terminal. Technical solutions provided in the embodiments of the present disclosure are used to enlarge coverage of medium-data rate and high-data rate services.