LTE Resource Block Group Sizing for Heterogeneous Network Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In heterogeneous networks, the unequal resource block group sizes for different versions of UEs in the LTE system lead to complex scheduling, repeated resource allocation, and resource waste due to the varying system bandwidths used by PDCCH and PDSCH.
Innovation Solution
A method and apparatus for resource allocation that determines a common resource block group size for UEs in a common resource area and a dedicated resource block group size for UEs, allowing for equal RBG sizes across versions, thereby simplifying scheduling and reducing resource duplication and waste by dividing resource blocks into groups based on predefined corresponding relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If different RBG sizes are used for different UE versions in the common resource area, then each UE version can have optimized resource allocation for its specific system bandwidth, but the base station scheduling complexity increases and resource repetition or waste occurs
Solution Approach 1:
The patent applies local quality by differentiating resource block group sizes between common resource area and dedicated resource area. In the common resource area, RBG size is determined based on the common system bandwidth to ensure compatibility across UE versions, while in the dedicated resource area, RBG size is determined based on the total system bandwidth for optimized resource allocation. This localized differentiation resolves the contradiction by allowing version-specific optimization without causing scheduling conflicts in the shared region.
2Device complexity
If RBG size is determined according to the total system bandwidth for all UEs, then resource allocation is simplified, but old version UEs (R8/R9) cannot properly utilize the common resource area with their smaller system bandwidths
Solution Approach 1:
The patent segments the system bandwidth into two distinct parts: common system bandwidth (for common resource area) and total system bandwidth (for dedicated resource area). Old version UEs (R8/R9) use only the common system bandwidth for resource allocation in the common resource area, while new version UEs (R10) can utilize both common and dedicated resource areas based on the total system bandwidth. This segmentation enables version compatibility while maintaining simplified allocation rules for each segment.
Solution Approach 2:
The patent implements universality by designing the common resource area to serve multiple UE versions simultaneously. The common system bandwidth and its corresponding RBG size are universally applicable to both old version UEs (R8/R9) and new version UEs (R10), allowing the common resource area to function as a shared scheduling region. New version UEs can also access the dedicated resource area, making the overall system multi-functional across different UE capabilities.
3Quantity of substance
If the control channel occupies only part of the carrier bandwidth, then bandwidth efficiency is improved, but the system bandwidth for PDCCH and PDSCH becomes unequal, requiring different RBG sizes for different UE versions
Solution Approach 1:
The patent applies local quality by creating different RBG size determination rules for different resource areas. The common resource area uses RBG size based on common system bandwidth (suitable for control channel occupation), while the dedicated resource area uses RBG size based on total system bandwidth (optimizing for data transmission). This localized approach maintains bandwidth efficiency from partial control channel occupation while managing RBG size complexity through area-specific rules.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention discloses a resource allocation method and apparatus, wherein the method comprises: according to the number of resource blocks in a common resource area of a carrier and a set first corresponding relationship, determining a first resource block group size corresponding to a first resource allocation type in the common resource area; and according to the first resource block group size, dividing all resource blocks in the common resource area of the carrier into one or more resource block groups; according to the first resource block group size, or according to the total number of resource blocks of the carrier and the first corresponding relationship, determining a second resource block group size corresponding to the first resource allocation type in the dedicated resource area; and according to the second resource block group size, dividing resource blocks in the dedicated resource area of the carrier into one or more resource block groups. The embodiments of the present invention determine the resource block group size according to the number of resource blocks in the common resource area, which simplifies scheduling process, reduces repeated resource allocation, and saves bandwidth resource.