Buffer Status Report Exclusion for LTE Resource Optimization
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Solution Overview
Problem
In wireless communication systems, existing methods for reporting buffer status reports (BSR) can lead to overscheduling of LTE resources, resulting in inefficient use of resources and suboptimal data transmission scheduling.
Innovation Solution
A base station and method that configure a first radio bearer using WLAN resources and a second radio bearer using LTE resources, with the communication device not reporting the buffer size of the first RB in the BSR, thereby preventing overscheduling and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the communication device reports the buffer size including both WLAN and LTE buffered data in the BSR, then the eNB can schedule UL grants according to the total buffered data amount, but this leads to overscheduling of LTE resources since the eNB cannot distinguish which bearer uses which network
Solution Approach 1:
The invention segments the buffer status reporting by separating WLAN bearer data from LTE bearer data. The communication device is configured to exclude buffered data of the first radio bearer (using WLAN resources) from the BSR, while including buffered data of the second radio bearer (using LTE resources). This segmentation allows the eNB to accurately schedule LTE resources based only on LTE bearer buffer status, preventing overscheduling while maintaining accurate resource allocation.
2Loss of information
If the communication device reports the total buffer size in BSR, then the eNB receives complete information about all buffered data, but this causes inefficient use of LTE resources due to inability to differentiate bearer types
Solution Approach 1:
The invention extracts and excludes the buffered data information of the WLAN bearer from the BSR report. The processing means is configured to generate a BSR that includes only the buffered data amount of the second radio bearer (LTE resources), while excluding the first radio bearer (WLAN resources). This extraction ensures the eNB receives precise LTE bearer buffer status without WLAN interference, improving data transmission efficiency through accurate resource scheduling.
3Ease of operation
If the first radio bearer is assigned to a logical channel group, then the BSR can report buffer status by LCG, but this would still include WLAN bearer data in the aggregated LCG report causing the same overscheduling problem
Solution Approach 1:
The invention applies dynamic configuration where the processing means is explicitly configured to treat the first radio bearer differently from conventional bearers. Instead of statically assigning the WLAN bearer to an LCG where it would be aggregated with LTE bearers, the system dynamically configures the BSR generation to exclude the first RB's buffered data regardless of LCG membership. This dynamic approach prevents LTE resource overscheduling while maintaining flexible bearer management.
Data Source
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AI summary
A communication device for reporting a buffer status report (BSR) to a base station (BS) comprises a storage unit for storing instructions and a processing means coupled to the storage unit. The processing means is configured to execute the instructions stored in the storage unit. The instructions comprise being configured a first radio bearer (RB) utilizing wireless local area network (WLAN) resources; and transmitting the BSR to the BS, wherein the BSR excludes an amount of buffered data of the first RB.