Adaptive Radio Selection for Paging in Low-Power User Equipment
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Solution Overview
Problem
Low-power user equipment (UE) in wireless communications systems face high power consumption when monitoring for paging messages due to the need to wake up and use both main and low-power wake-up radios, leading to inefficient use of communication resources and potential loss of connection.
Innovation Solution
The UE selects a radio (main or low-power wake-up radio) based on reference signal measurements and threshold values, transmitting an indication to the base station. This allows the UE to power down the unused radio and reduces signaling overhead by ensuring paging messages are sent to the active radio only.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE uses both main radio and low-power wake-up radio to monitor for paging messages, then the connection reliability is improved, but the power consumption increases
Solution Approach 1:
The patent applies dynamics by making the radio selection adaptive and changeable based on current conditions. The UE dynamically selects between main radio and wake-up radio for paging monitoring based on reference signal measurements and threshold comparisons, allowing the system to optimize between reliability and power consumption depending on the situation rather than using a fixed configuration
Solution Approach 2:
The patent changes the parameter of which radio is used for paging monitoring based on measured reference signal values and threshold comparisons. When the reference signal measurement exceeds a threshold, the UE switches to using the wake-up radio for paging monitoring; otherwise, it uses the main radio. This parameter change resolves the contradiction by selecting the appropriate radio mode based on current signal conditions
2Area of stationary object
If the UE uses both main radio and low-power wake-up radio for paging monitoring, then the coverage area is improved, but the device complexity increases
Solution Approach 1:
The patent extracts the paging monitoring function from the main radio and assigns it to the wake-up radio under specific conditions. By separating the paging monitoring task from the main radio's responsibilities and assigning it to the specialized wake-up radio when signal conditions permit, the system maintains wide coverage while reducing the operational complexity of the main radio
Solution Approach 2:
The system dynamically determines which radio handles paging monitoring based on reference signal measurements. This dynamic allocation of functionality allows the coverage area to be maintained through appropriate radio selection while avoiding the constant complexity of managing both radios simultaneously for all functions
3Reliability
If the base station sends paging messages to both radios, then the delivery reliability is improved, but the signaling overhead increases
Solution Approach 1:
The patent implements feedback through the UE transmitting an indication to the base station about which radio it is using for paging monitoring. Based on this feedback, the base station sends paging messages only to the indicated radio, ensuring delivery reliability while minimizing signaling overhead by avoiding redundant transmissions to both radios
Solution Approach 2:
The UE self-determines the appropriate radio for paging monitoring based on reference signal measurements and threshold comparisons, then informs the base station of its selection. This self-service approach allows the UE to autonomously optimize the paging reception process, ensuring reliable delivery while reducing the signaling overhead that would result from the base station managing both radio channels
Data Source
AI summary
Various aspects of the present disclosure relate to active radio notification for paging. An apparatus, such as a user equipment (UE), transmits a first signaling indicating a radio selected from a set of radios at the UE. The radios may include a main radio and a low-power wake-up radio. The UE may use the radios for receiving a paging indication from a network equipment (NE). The UE may monitor, in response to the first signaling, for a second signaling indicating whether the first signaling is successfully transmitted. For example, the UE may receive a message from the NE that indicates the NE successfully received the radio indication.