Radio Network Controller E-DCH Resource Pool Adjustment
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Solution Overview
Problem
In 3GPP UMTS R11 version, the coexistence of 2ms and 10ms transmission time intervals (TTIs) poses a challenge in dynamically adjusting the resource pool size in radio networks, as existing methods cannot effectively manage the allocation and adjustment of resources for user equipment selecting different TTI lengths.
Innovation Solution
A method is introduced where a radio network controller receives indication information from a base station on the usage of resource pools corresponding to different TTIs, allowing for dynamic adjustment of the resource pool configuration by dividing the common E-DCH resource pool into sub-pools and adjusting the range based on statistical data such as granted and denied resources, enabling efficient allocation and reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a common E-DCH resource pool is configured for multiple TTIs, then user equipment can flexibly select TTI length for uplink transmission, but the resource pool size cannot be dynamically adjusted to match varying usage patterns of different TTIs
Solution Approach 1:
The patent divides the common E-DCH resource pool into separate sub-pools for different TTI lengths (2ms and 10ms). Each sub-pool is independently configurable and managed, allowing the system to adapt to varying usage patterns of different TTIs while maintaining overall flexibility. The resource pool configuration includes separate start and length parameters for each TTI sub-pool.
Solution Approach 2:
The patent enables dynamic adjustment of resource pool sizes for different TTIs through periodic reporting mechanisms. The base station reports TTI usage statistics to the radio network controller, which then dynamically reconfigures the resource pool parameters (start and length) to match actual usage patterns, making the system adaptive rather than static.
2Productivity
If the resource pool configuration is fixed, then system operation is simple, but resource allocation efficiency decreases when TTI usage patterns vary
Solution Approach 1:
The patent implements a feedback mechanism where the base station monitors TTI usage patterns and reports statistics (such as the number of granted and denied resources) to the radio network controller. The controller uses this feedback information to dynamically adjust resource pool configurations, ensuring resource allocation efficiency matches actual usage patterns while automating the process to maintain operational simplicity.
Solution Approach 2:
The system enables self-service through automated resource pool adjustment. The base station automatically reports usage statistics, and the radio network controller automatically reconfigures resource pools based on received reports, eliminating the need for manual intervention while maintaining high resource allocation efficiency.
3Manufacturing precision
If separate resource pools are configured for different TTIs, then resource allocation precision improves, but the number of configuration parameters and system complexity increases
Solution Approach 1:
The patent uses a universal resource pool configuration structure that can serve multiple TTIs simultaneously. The same basic configuration parameters (start and length) are used for both 2ms and 10ms TTIs, allowing the system to achieve precise resource allocation for different TTIs while maintaining a unified, manageable configuration framework rather than requiring completely separate configurations.
Data Source
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AI summary
The present application provides a method for adjusting resource configuration, a radio network controller, and a base station. The method includes: sending configuration information of an uplink common enhanced dedicated transport channel E-DCH resource pool to a base station, where the configuration information of an uplink common E-DCH resource pool includes information of a first resource pool to which a first transmission time interval corresponds and information of a second resource pool to which a second transmission time interval corresponds; receiving indication information that the base station sends according to usage of the resource pool; and adjusting configuration of the first resource pool according to the indication information. In embodiments of the present application, the radio network controller receives the indication information that the base station sends according to the resource usage of the resource pools to which different transmission time intervals correspond, so as to adjust configuration of a resource of a resource pool according to the indication information, so that the range of the resource pool can be dynamically adjusted in the case that a plurality of transmission time intervals coexists.