UE Capability Delta Information Signaling
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Solution Overview
Problem
In wireless communication systems, efficiently indicating changes in user equipment (UE) capabilities to a network entity is challenging, as existing methods often require transmitting the full set of capabilities, which can be inefficient when only a few capabilities have changed, especially when the network already has access to the UE's base capabilities.
Innovation Solution
The method involves transmitting a first message with a delta flag to indicate whether there are changes in the UE's capabilities, and based on a second message from the network, the UE determines whether to send a third message containing either its full capabilities or just the delta information, optimizing the information exchanged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the UE transmits full capabilities to the network entity, then the network entity has complete information about UE capabilities, but the amount of data transmitted increases unnecessarily when only a few capabilities have changed
Solution Approach 1:
The patent extracts only the changed capability information (delta information) from the full capability set and transmits it separately using a delta indicator. This allows the network entity to reconstruct complete capability information by combining the received delta information with previously stored base capability information, thereby maintaining information completeness while reducing transmission volume.
Solution Approach 2:
The capability information is segmented into base capabilities (already known to the network) and delta capabilities (changes since the last transmission). The patent transmits only the delta segment when changes occur, rather than transmitting the entire capability set, thus reducing redundant data transmission while maintaining complete information availability.
2Quantity of substance
If the UE transmits only delta information, then the data transmission volume is reduced, but the network entity may not have complete capability information
Solution Approach 1:
The network entity provides feedback through an acknowledgment message that indicates whether the delta information was successfully received and processed. This feedback mechanism allows the UE to determine whether to transmit additional full capability information or rely on the delta information approach, ensuring complete information availability while optimizing transmission volume.
3Reliability
If the UE always transmits full capabilities, then the network entity always has up-to-date information, but the communication efficiency decreases due to unnecessary data transmission
Solution Approach 1:
The patent implements a dynamic capability transmission approach where the UE adapts its transmission strategy based on whether capabilities have changed. When capabilities are unchanged, the UE transmits only a compact indicator referencing the base capability set. When capabilities change, the UE transmits delta information. This dynamic approach maintains information accuracy while optimizing communication efficiency based on actual needs.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for communicating a user equipment (UE)'s capabilities to a network entity, such as a base station. An example method that may be performed by a UE includes transmitting a first message to a network entity, the first message comprising a base identification and a delta flag, wherein the base identification identifies base capabilities of the UE, and wherein the delta flag indicates whether there is delta information to be shared by the UE, the delta information corresponding to changes to the base capabilities of the UE. The method further includes determining whether to transmit a third message to the network entity based on whether the UE receives a second message from the network entity, the second message comprising a full capability flag indicating whether the UE should send an indication of its full capabilities to the network entity.