HARQ Sub-Entity Segmentation for Multi-Carrier HSDPA
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The current TD-SCDMA system's single-carrier cell configuration is inadequate for providing high-speed packet data services, as it cannot efficiently manage and distribute HSDPA resources across multiple frequencies, leading to complex flow control and HARQ process management in multi-carrier cells.
Innovation Solution
The method involves Node B distributing high-speed downlink packet services across multiple frequencies, establishing separate Hybrid Automatic Retransmission Request (HARQ) sub-entities for each frequency, allowing each sub-entity to independently process HARQ processes and configure parameters, ensuring compatibility with the current protocol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HSDPA resources are distributed across multiple frequencies in multi-carrier cells, then the data transmission speed and spectrum utilization are improved, but the complexity of flow control and HARQ process management increases
Solution Approach 1:
The patent divides the HARQ entity into multiple HARQ sub-entities, with each sub-entity corresponding to a specific frequency. This segmentation allows independent management of HARQ processes on different frequencies, reducing the overall management complexity while enabling parallel processing across multiple frequencies for improved data transmission speed.
2Adaptability or versatility
If multiple HARQ processes are established for each frequency, then the HARQ function coverage is improved, but the configuration and management complexity increases
Solution Approach 1:
The patent segments the HARQ entity into multiple sub-entities, where each sub-entity manages HARQ processes for a specific frequency. This structure improves HARQ function coverage across multiple frequencies while maintaining manageable configuration complexity through localized management at each sub-entity level.
Solution Approach 2:
The patent introduces a frequency dimension to the HARQ management structure by creating separate HARQ sub-entities for each frequency. This dimensional expansion allows the system to handle multiple frequencies simultaneously, improving coverage while organizing complexity along the frequency axis rather than requiring centralized management of all processes.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a method for realizing HARQ in multi-carrier cell, comprising: when distributing high-speed shared resource for UE, Node B distributes the high-speed downlink packet service to N frequencies, and reports the information of the established physical channel, including the frequency information, to RNC and said UE; after Node B establishes the high-speed shared resource for said UE at N frequencies, it establishes N HARQ sub-entities on the HARQ entity built for said UE, each sub-entity independently processes the high-speed downlink packet service at one frequency ; correspondingly, said UE also establishes N HARQ sub-entities on the HARQ entity; Node B configures parameters for each HARQ sub-entity and notifies the configuration information to RNC and said UE through upper-level signaling; Node B and UE complete their configuration for each sub-entity of HARQ entity according to the information, and realize the HARQ function in the service. The present invention can realize HARQ function on multiple frequencies simultaneouly and is compatible with current protocol in TD-SCDMA system that utilizes multi-carrier HSDPA technique.