Prioritized Carrier Aggregation Advertisement for Limited Uplink Grants
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Solution Overview
Problem
The existing methods for a user equipment (UE) to advertise carrier aggregation (CA) capabilities to an LTE network are inefficient, particularly due to limited space in the uplink grant for capability information, leading to potential network failures and unsatisfactory user experiences.
Innovation Solution
A method and system where the UE receives and prioritizes CA combinations based on a priority factor, ordering them for efficient advertisement to the network, allowing for the most relevant combinations to be advertised within the limited space, thereby overcoming the limitations of current advertising processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all CA combinations are advertised in the UL grant, then complete capability information is provided to the network, but the limited UL grant space is exceeded causing transmission failures
Solution Approach 1:
The patent extracts only the most relevant CA combinations from the complete set of supported combinations and advertises them in the UL grant. By selecting a subset of CA combinations based on relevance criteria rather than including all combinations, the system fits the capability information within the limited UL grant space while still providing the network with sufficient information to make optimal configuration decisions.
2Reliability
If double CA arrangements are advertised before triple CA arrangements, then LTE standard requirements are met, but advertising efficiency is reduced when triple CA is preferable
Solution Approach 1:
The patent introduces dynamic prioritization of CA combinations based on their relevance to current network conditions and UE capabilities. Instead of following a fixed advertising order (double CA before triple CA), the system dynamically determines the optimal advertising sequence by evaluating factors such as signal quality, bandwidth availability, and network load, allowing triple CA arrangements to be advertised first when conditions favor them.
3Loss of information
If measurement information for all LTE bands is included in the UL grant, then comprehensive network awareness is achieved, but the UL grant space is consumed leaving insufficient room for other capability information
Solution Approach 1:
The patent applies local quality by providing detailed measurement information only for the most relevant LTE bands and CA combinations, rather than uniformly including all bands. The system identifies which bands are most pertinent to current operating conditions and prioritizes measurement data for those specific bands, thereby reducing overall information volume while maintaining network awareness of critical capabilities.
Data Source
AI summary
A device and method for transmitting user equipment capability information to a network. In a first mechanism, the device and method determines the carrier aggregation (CA) combinations supported by the user equipment that are relevant to the user equipment. in a priority order to the network. The relevant CA combinations may be determined based on most recent camped bands and the neighbor bands of the most recent camped bands. In a second mechanism, the device and method orders the relevant CA combinations into a prioritized list according to which CA combination have priority based on selected priority factors. Subsequently, the user equipment broadcasts the prioritized list of CA combinations to the network.