RNC Carrier Data Separation in Dual-Carrier Uplink
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In existing communication systems, the radio network controller struggles to distinguish data from main and auxiliary carriers during dual carrier high speed uplink packet access, leading to mixed data and failure in reordering and macro diversity combining, resulting in service unavailability.
Innovation Solution
A method and system for configuring an enhanced dedicated channel transmission bearer mode, where a first RNC establishes an enhanced dedicated channel cell over a non-main carrier frequency layer, configuring the transmission bearer mode as either share or separate to accurately identify and separate data from different carriers, ensuring proper reordering and diversity combining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the transmission bearer mode is configured as share mode to send the same MAC stream from all uplink carriers on a single transmission bearer, then the device complexity is reduced, but the radio network controller cannot distinguish data from different carriers leading to data mixing and service unavailability
Solution Approach 1:
The patent introduces an intermediary mechanism (carrier identification field and reordering buffer) between the transmission bearer and the data processing function. The carrier identification field acts as a mediator to tag data from different carriers, while the reordering buffer serves as an intermediary structure to separate and reorder data before processing, preventing data mixing while maintaining the simplified share mode transmission bearer configuration.
2Reliability
If the transmission bearer mode is configured as separate mode to send each MAC stream from different uplink carriers on separate transmission bearers, then the radio network controller can distinguish data from different carriers, but the device complexity increases
Solution Approach 1:
The patent inverts the traditional approach by maintaining a unified share mode transmission bearer configuration (simple structure) but introducing data-level identification and separation mechanisms (complex function). Instead of making the transmission bearer structure complex to achieve data separation, the patent keeps the bearer structure simple and adds identification fields and processing logic at the data level, achieving the opposite structural arrangement.
3Measurement precision
If uplink multiplexing information is added to distinguish carriers in share mode, then the radio network controller can identify carrier sources, but the manufacturing precision of data frame structure increases
Solution Approach 1:
The patent segments the data frame structure by introducing a distinct carrier identification field within the uplink multiplexing information. This segmentation allows the carrier identification function to be separated from the main data payload, enabling precise carrier source identification while maintaining a standardized and manageable data frame structure through clear field delimitation and organization.
Data Source
AI summary
A method and a system for configuring an enhanced dedicated channel transmission bearer mode are provided by the present invention. The method comprises: in a situation that a first radio network controller (RNC) establishes an enhanced dedicated channel cell over a non-main carrier frequency layer in a predetermined network element, the first RNC configuring an enhanced dedicated channel transmission bearer mode of the predetermined network element, wherein the predetermined network element comprises at least one of the following: a node B connected to the first RNC and a second RNC connected to the first RNC. The present solution solves the problem in the related art that: the radio network controller cannot distinguish the received data from a main carrier and the received data from an auxiliary carrier.