Wireless Terminal Initial Control Report Set for Handoff Latency
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Solution Overview
Problem
In multiple access wireless communications systems, there is a need for efficient methods to report control information, especially during transitions from less active to more active states, as existing recurring reporting structures can lead to delays in resource allocation and inefficient handoff operations.
Innovation Solution
A method where a wireless terminal sends an initial control information report set following specific events, such as state transitions or handoffs, which includes critical information like signal interference, power levels, and queue status, overriding the recurring reporting structure to ensure timely and accurate resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a recurring reporting structure is used for control channel information, then resource allocation is simplified and energy consumption is reduced, but the base station experiences delayed receipt of critical control information following state transitions or handoffs
Solution Approach 1:
The patent applies preliminary action by having the wireless terminal send an initial control information report set immediately upon transitioning to an active state or completing a handoff, before the recurring reporting schedule would normally occur. This proactive transmission ensures the base station receives critical control information without waiting for the next scheduled reporting interval, thereby reducing time delay while maintaining a simple recurring structure for ongoing reports
Solution Approach 2:
The patent segments the control information reporting into two distinct parts: an initial report set transmitted immediately upon state transition or handoff, and subsequent recurring reports transmitted according to the scheduled interval. This segmentation allows the system to address the time delay issue for critical transitions without complicating the ongoing reporting structure, as each segment serves a specific purpose
2Productivity
If a wireless terminal transitions from a less active state to a more active state, then user data transmission capability is improved, but the base station experiences delay in obtaining updated terminal status information
Solution Approach 1:
The patent applies preliminary action by requiring the wireless terminal to transmit an initial control information report set immediately upon transitioning to an active state, providing the base station with up-to-date terminal status information before data transmission begins. This ensures the base station has current information about signal quality, interference levels, and other critical parameters without relying on outdated information from previous reporting cycles
Solution Approach 2:
The patent implements feedback by having the wireless terminal continuously provide status information to the base station through the initial report set upon state transition. This feedback mechanism ensures the base station maintains an accurate understanding of terminal conditions, enabling timely and appropriate resource allocation decisions based on current terminal status rather than outdated information
3Use of energy by moving object
If a recurring reporting structure with long time intervals is used, then air link resource consumption is reduced, but handoff operations and state transitions become inefficient
Solution Approach 1:
The patent segments the reporting requirement into an initial report set transmitted immediately upon handoff or state transition, followed by recurring reports at scheduled intervals. This segmentation enables efficient handoff operations by ensuring the base station receives critical information promptly, while maintaining low air link resource consumption through the spaced-out recurring reports that follow
Solution Approach 2:
The patent applies preliminary action by transmitting the initial control information report set immediately upon handoff completion or state transition, ensuring the base station has current terminal status information before resuming normal recurring reporting. This approach maintains handoff efficiency without increasing the frequency or resource consumption of the ongoing recurring reporting structure
Data Source
AI summary
An initial reporting structure for an uplink dedicated control channel is used by a wireless terminal following a transition into a state of wireless terminal operation or action which makes it desirable to provide a base station with an initial set of control information which can be used to support uplink transmission of user data. Subsequently while continuing operation in a state supporting uplink transmission of user data, a recurring scheduled reporting structure for the uplink dedicated control channel is followed by the wireless terminal. The initial reporting structure provides for communication of at least some information reports, e.g., infrequently scheduled reports, which may not have been otherwise communicated during the same time interval if the recurring scheduled reporting structure had not been overridden. Thus the use of initial report sets facilitates a rapid overall understanding by the serving base station attachment point of the wireless terminal's status.