Bandwidth Part Switching via Dynamic Resource Indication Value Encoding
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Solution Overview
Problem
The existing signaling methods for frequency domain resource allocation in 5G NR are inadequate, particularly for scenarios like msg3 transmission in random access procedures, where the requirements for RB resolution differ, and the number of signaling bits is mismatched with the number of RBs in the BWP.
Innovation Solution
The proposed solution involves defining a resource indication value (RIV) that supports flexible starting virtual resource blocks and allocation lengths, with specific encoding methods (e.g., Method 1a, Method 1b, Method 2a, Method 2b, Method 3, Method 4) to optimize the use of signaling bits and ensure efficient frequency domain resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing signaling methods for frequency domain resource allocation are used, then the system can support basic resource allocation, but the signaling bits are mismatched with the number of RBs in the BWP, leading to inefficiency
Solution Approach 1:
The patent changes the parameter of resource indication value encoding by introducing multiple encoding methods (Method 1a, 1b, 2a, 2b, 3, 4) that adapt the number of signaling bits to match the actual number of RBs in the BWP. This resolves the mismatch by dynamically adjusting the signaling parameters based on BWP configuration.
2Quantity of substance
If the number of signaling bits is increased to support more RBs, then more UEs can be supported, but the complexity of the signaling system increases
Solution Approach 1:
The patent introduces dynamic signaling bit allocation where the number of bits used for resource indication varies based on the BWP size and configuration. Different encoding methods are selected dynamically to match the actual resource allocation needs, avoiding the use of excessive bits for small BWPs while supporting large numbers of UEs when needed.
3Adaptability or versatility
If flexible resource allocation is implemented to support different BWP sizes, then adaptability improves, but the difficulty of detecting and measuring resource allocation increases
Solution Approach 1:
The patent segments the resource allocation signaling into multiple parts: BWP configuration parameters, resource indication value, and encoding method indicators. This segmentation allows the system to handle different BWP sizes systematically while providing clear detection rules for each segment, reducing the overall difficulty of resource allocation detection.
4Loss of time
If conventional resource allocation signaling is used, then the system structure remains simple, but latency in resource allocation increases
Solution Approach 1:
The patent performs preliminary configuration of BWP parameters and resource allocation patterns before actual resource allocation occurs. By pre-defining encoding methods and signaling structures based on expected BWP configurations, the system reduces the time needed for resource allocation decisions while maintaining a manageable signaling structure through standardized templates.
Data Source
AI summary
Arrangement for switching between an active bandwidth part and the target bandwidth part are disclosed. A method includes selecting one or more resource blocks comprised in the target bandwidth part for a transmission or reception between the wireless device and the network node. The selected resource blocks to be used in the target bandwidth part are indicated in a resource allocation field of a downlink control channel information in the active bandwidth part. The allocation field includes information bits and the resource allocation field in the active bandwidth part and the information bits are configured based on a target bandwidth part resource allocation type. The target bandwidth part resource allocation type indicates whether the information bits have a bitmap corresponding to one or more resource block groups or an integer value corresponding to a starting resource block and a length of the allocation in resource blocks.