Wireless Capability Reporting Hash-Based ID System
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Solution Overview
Problem
The existing methods for capability reporting in wireless networks are inefficient due to the large size of UE Radio Capabilities, leading to increased network resource usage, processing costs, and difficulties in transferring information, especially when UEs support multiple radio access technologies and frequencies, resulting in interface signaling, processing, and memory usage challenges.
Innovation Solution
A hash-based capability ID system is introduced, where a UE generates a capability ID based on a filter included in broadcast information, allowing for early signaling and reducing administrative burdens, with the option to store a filter-to-capability ID mapping to minimize processing and eliminate the need for constant ID creation and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE transfers complete radio capability information to the network, then the network can fully configure communication paths and activate features, but the interface signaling, processing, and memory usage increase significantly
Solution Approach 1:
The UE capability information is segmented into two parts: a capability ID (first information) that is transferred to the network, and the detailed capability information (second information) that is stored locally in the UE. The network node stores a mapping between capability IDs and detailed capability information, allowing it to retrieve full capabilities when needed without receiving complete information in every signaling exchange.
Solution Approach 2:
The network node maintains a copy of the mapping between capability IDs and detailed capability information in its own storage. This allows the network to access complete capability information locally without requiring the UE to transfer it repeatedly, reducing interface signaling while ensuring the network has full capability data for configuration decisions.
2Adaptability or versatility
If UE supports multiple radio access technologies and frequency bands, then the UE functionality and versatility increase, but the size of capability information increases making transfer costly
Solution Approach 1:
The large capability information structure is divided into a compact capability ID and detailed capability information. The capability ID serves as a reference key that uniquely identifies the UE's capabilities across multiple RATs and frequency bands, while the full detailed information remains stored in the UE and can be retrieved by the network through the mapping table.
Solution Approach 2:
The essential identifying feature (capability ID) is extracted from the complete capability information and transferred to the network. The remaining detailed capability information is kept in the UE's storage, eliminating the need to transfer large amounts of data while still providing the network with the necessary identifier to access full capability details when needed.
3Productivity
If UE stores capability IDs and filter-to-capability ID mappings, then processing efficiency improves, but memory usage increases
Solution Approach 1:
The UE pre-generates capability IDs based on broadcast filters before actual capability reporting is needed. The UE stores mappings between broadcast filters and capability IDs, allowing it to quickly retrieve or generate appropriate capability IDs when the network requests capability information, without having to process and analyze the entire capability information structure at that moment.
Data Source
AI summary
The disclosure provides a method performed by a wireless device for providing capability information. The method comprises: receiving a first message from a base station, the first message comprising an indication of a capability filter; utilizing the capability filter to generate a filtered set of capabilities of the wireless device; applying a hash function to the filtered set of capabilities to generate a hash value; and transmitting a second message to the base station, the second message comprising the hash value.