Full-Duplex BWP Resource Allocation Using Effective RB Size
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Solution Overview
Problem
In wireless communications systems, the ambiguity in resource allocation due to overlapping bandwidth parts (BWP) with multiple uplink and downlink sub-bands in full-duplex slots leads to inefficiencies in resource block and resource block group (RBG) size determination, causing inaccuracies in frequency domain resource allocation (FDRA).
Innovation Solution
The solution involves determining an effective size of the BWP and a first available resource block, which may differ from the total BWP size, to accurately allocate resources within a full-duplex slot by considering the overlap with uplink and downlink sub-bands, using disjoint or consecutive resource block allocations based on the effective size and starting resource block.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the total BWP size is used for resource allocation in full-duplex slots, then the resource allocation covers the entire bandwidth part, but ambiguity arises due to overlap with multiple uplink and downlink sub-bands
Solution Approach 1:
The patent segments the BWP into multiple sub-bands, each designated for specific duplexing modes (e.g., uplink sub-bands, downlink sub-bands, full-duplex sub-bands). This segmentation allows the network to allocate resources within specific sub-bands rather than treating the entire BWP as a single unit, thereby eliminating ambiguity when the BWP overlaps with multiple sub-bands of different duplexing modes.
2Ease of operation
If resource allocation is performed without considering sub-band overlaps, then the allocation process is simple, but inaccuracies occur in frequency domain resource allocation
Solution Approach 1:
The patent performs preliminary identification of the first available resource block and determination of the effective BWP size before actual resource allocation takes place. The network entity identifies which sub-bands are available for uplink or downlink transmissions and determines the effective BWP size considering these availability constraints. This preliminary action ensures that subsequent resource allocation is accurate without requiring complex real-time adjustments during the allocation process.
3Productivity
If the first resource block is determined without considering sub-band availability, then the allocation is straightforward, but the allocated resources may fall in unavailable sub-bands
Solution Approach 1:
The patent applies local quality by determining the first available resource block based on the specific characteristics of each sub-band. Instead of uniformly treating all resource blocks in the BWP equally, the network identifies the first resource block that is both within the BWP and located in a sub-band available for the intended transmission direction (uplink or downlink). This ensures that resource allocation is both efficient and accurate by considering local sub-band availability conditions.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A first wireless device such as a user equipment (UE) may receive a first message that indicates one or more resource allocation parameters associated with a bandwidth part (BWP). The one or more resource allocation parameters may include an indication of a first available resource block of the BWP, an indication of an effective size of the BWP, or both. The UE may then receive a second message that indicates a resource allocation for communicating with a network entity via the BWP during a transmission time interval (TTI). The UE may then communicate with the network entity during the transmission time interval in accordance with the resource allocation and based on applying the one or more resource allocation parameters.