UE Frequency Band Combination Prioritization
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Solution Overview
Problem
Wireless communication systems face challenges in efficiently conveying UE capability frequency band combinations due to limited message size constraints, which can lead to incomplete information and impaired network functionality, such as restricted coverage and handover capabilities.
Innovation Solution
The implementation of prioritization techniques at the UE to select and include a subset of frequency band combinations within the UE Capability Information message, ensuring at least one combination with uplink support for each network frequency band, while filling the message to its maximum size, based on order or prioritization methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the UE includes all supported frequency band combinations in the UE Capability Information message, then the network receives complete capability information, but the message size exceeds the maximum allowed limit
Solution Approach 1:
The UE segments the complete frequency band capability information into multiple messages. The first message includes the most critical frequency band combinations (those with uplink support for each network frequency band), while additional messages convey remaining combinations. This segmentation allows the network to receive essential capability information within size constraints while still obtaining complete information through subsequent messages.
Solution Approach 2:
The UE extracts and prioritizes the most important frequency band combinations (those providing uplink support for each network frequency band) to include in the first capability message. By taking out only the essential combinations needed for basic network functionality, the message size remains within limits while ensuring critical capabilities are communicated.
2Reliability
If the UE prioritizes frequency band combinations with uplink support for each network frequency band, then network functionality is maintained, but some supported combinations may be excluded due to size constraints
Solution Approach 1:
The UE performs preliminary prioritization of frequency band combinations before constructing the capability message. It identifies and ranks combinations based on their importance for network functionality (particularly those with uplink support for each network frequency band). This preliminary action ensures that the most critical combinations are included first, maintaining network reliability while staying within size constraints.
Solution Approach 2:
The UE includes a partial set of frequency band combinations in the first message - specifically those that are sufficient to maintain basic network functionality. By providing a partial but adequate set of combinations rather than attempting to include all combinations, the UE ensures network reliability is maintained while avoiding message size violations.
3Loss of information
If the UE sends multiple capability messages to include all frequency band combinations, then complete information is conveyed, but network processing time and complexity increase
Solution Approach 1:
The capability information is segmented into multiple messages sent in sequence. The first message contains the most critical frequency band combinations, allowing the network to quickly establish basic functionality. Subsequent messages provide additional combinations, enabling the network to progressively build complete capability knowledge without requiring all information to be processed simultaneously, thus reducing overall processing time.
Data Source
AI summary
Methods, systems, and devices for wireless communications manager are described. An example method for wireless communication at a UE includes receiving a request for a frequency band capability of the UE from a network, wherein the request includes a plurality of network frequency bands. The method may also include selecting a subset of frequency band combinations from a plurality of frequency band combinations supported by the UE, wherein a numerical quantity of the plurality of frequency band combinations supported by the UE exceeds a size constraint of a capability message, and wherein the subset includes at least one frequency band combination for each network frequency band. The method may also include sending the capability message in response to the request that includes an indication of the subset of frequency band combinations.