Limited-Bandwidth UE Paging via Capability Indication
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Solution Overview
Problem
Network nodes may transmit paging messages on cells with legacy transmission bandwidth, unaware that user equipment (UE) supports only limited transmission bandwidth, leading to communication failures and inefficiencies.
Innovation Solution
UE and network nodes exchange capability indications related to communication on cells with limited transmission bandwidth, using synchronization raster points, to facilitate proper decoding of paging messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network nodes transmit paging messages on cells with legacy transmission bandwidth, then network coverage and compatibility are maintained, but communication failures occur when UE supports only limited transmission bandwidth
Solution Approach 1:
The UE performs preliminary action by transmitting a capability indication to the network node before actual communication occurs. This capability indication specifies the UE's support for limited transmission bandwidth and associated synchronization raster points, allowing the network node to prepare appropriate paging messages in advance, thereby preventing communication failures before they occur.
Solution Approach 2:
The system implements feedback through the capability indication mechanism where the UE provides information about its bandwidth capabilities to the network node. This feedback loop enables the network node to adjust its paging message transmission strategy, ensuring compatibility with the UE's limited transmission bandwidth capability while maintaining reliable communication.
2Use of energy by moving object
If UE supports limited transmission bandwidth, then power consumption is reduced and battery life is extended, but decoding capability for legacy bandwidth paging messages is lost
Solution Approach 1:
The patent applies local quality by configuring the UE to monitor only specific synchronization raster points that correspond to its limited transmission bandwidth capability. Instead of attempting to decode all possible paging messages across all bandwidths, the UE focuses its reception capability at specific localized frequency points where it can reliably decode messages, thereby reducing power consumption while maintaining necessary decoding capability.
3Device complexity
If network nodes do not consider UE bandwidth capability, then network operation is simplified, but communication efficiency deteriorates due to unnecessary paging message retransmissions
Solution Approach 1:
The capability indication from the UE provides essential feedback that enables the network node to optimize its paging message transmission. With this feedback, the network node can determine whether to transmit paging messages using legacy transmission bandwidth or adjusted bandwidth parameters, avoiding unnecessary retransmissions and improving communication efficiency while maintaining manageable network operation complexity.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a capability indication associated with communication on a cell with a limited transmission bandwidth. The UE may receive, from a network node, a communication in accordance with the capability indication. Numerous other aspects are described.