Access Terminal Tune-Away for Secondary Subscription Page Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Access terminals often miss voice calls due to frequent channel conditions leading to repeated acquisition procedures, which tie up RF resources, causing mobile-terminated pages from secondary subscriptions to be missed as primary subscriptions maintain poor connections.
Innovation Solution
The access terminal suspends acquisition processes for primary subscriptions to release RF resources for secondary subscriptions, enabling the monitoring and receipt of mobile-terminated pages by prioritizing operations based on subscription priority and channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access terminal continuously performs acquisition procedures for primary subscriptions, then connection maintenance for primary subscriptions is improved, but RF resources are tied up causing mobile-terminated pages from secondary subscriptions to be missed
Solution Approach 1:
The patent implements dynamic resource allocation by making the RF resource assignment flexible rather than static. The system continuously monitors channel conditions and subscription priorities, then dynamically adjusts which subscription receives RF resources at any given moment. This allows the terminal to switch resources from primary subscriptions with poor channel conditions to secondary subscriptions that need to receive pages, resolving the contradiction between maintaining primary connections and receiving secondary pages.
Solution Approach 2:
The patent changes the parameter of RF resource allocation from a fixed state to a variable state based on channel conditions and subscription priorities. By introducing conditional logic that evaluates channel quality metrics and subscription priority levels, the system transforms the rigid resource allocation into an adaptive mechanism that can optimize between connection maintenance and page reception based on current system state.
2Stability of the object's composition
If the access terminal prioritizes primary subscriptions with poor channel conditions, then connection stability is improved, but mobile-terminated page reception for secondary subscriptions deteriorates
Solution Approach 1:
The patent introduces a resource management mechanism that acts as an intermediary between primary and secondary subscriptions. This intermediary monitors the state of both subscriptions and makes intelligent decisions about resource allocation. When primary subscriptions have poor channel conditions, the intermediary can temporarily allocate RF resources to secondary subscriptions for page reception, then reallocate back to primary subscriptions when conditions improve, thus mediating between the competing demands for stability and reliability.
Solution Approach 2:
The system implements dynamic priority adjustment based on real-time channel conditions. Rather than maintaining fixed priorities, the patent allows subscription priorities to change dynamically based on channel quality metrics. When primary subscriptions experience poor conditions, their effective priority is reduced, allowing secondary subscriptions to access RF resources for page reception, thereby maintaining overall system reliability while preserving connection stability.
3Reliability
If the access terminal releases RF resources for secondary subscriptions, then mobile-terminated page decode success rate is improved, but acquisition procedures for primary subscriptions are interrupted
Solution Approach 1:
The patent implements periodic monitoring of channel conditions and subscription states to determine when RF resource reallocation is appropriate. Rather than continuously switching resources or making ad-hoc decisions, the system evaluates conditions at periodic intervals and makes resource allocation decisions based on these periodic assessments. This approach ensures that primary subscription acquisition procedures are only interrupted when necessary and for limited durations, thereby improving page decode success rate while minimizing time loss.
Solution Approach 2:
The patent applies partial resource allocation by releasing RF resources only for the specific duration and extent needed to receive and decode mobile-terminated pages from secondary subscriptions. Rather than completely transferring resources or maintaining continuous allocation to primary subscriptions, the system implements temporary, partial reallocation that is sufficient to accomplish page reception but minimizes disruption to primary subscription acquisition procedures.
Data Source
AI summary
Access terminals are adapted to facilitate tune-away operations in situations in which multiple subscriptions are employed. According to one example, an access terminal performing an acquisition procedure for a first subscription may suspend the acquisition procedure to obtain a paging message for a second subscription. The access terminal can tune away from the first subscription to the second subscription and monitor for a mobile-terminated page. After a mobile-terminated page associated with the second subscription is received and processed, the access terminal may resume the acquisition procedure for the first subscription. Other aspects, embodiments, and features are also included.