Wireless Access Router Contention Management via Dynamic Slot Designation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for efficient and reliable methods to schedule and manage data transmission in wireless communication systems, particularly in peer-to-peer networks, to optimize the use of system resources such as power and bandwidth, while managing contention and ensuring quality of service.
Innovation Solution
A method that determines whether to use dedicated or shared control signaling based on the number of connected access terminals, designates data slots as uplink or downlink, and employs a two-stage pre-preamble design for scheduling, where nodes send request-to-transmit signals and receive confirmation signals, with supplemental information for bandwidth assignment and interference management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated control signaling is used for each access terminal, then the reliability of data transmission scheduling is improved, but the device complexity and overhead increase
Solution Approach 1:
The patent segments the control signaling into two distinct types: dedicated control signaling for individual access terminals and shared control signaling for multiple terminals. This segmentation allows the system to adapt the level of control detail based on the number of active terminals, resolving the contradiction between scheduling reliability and signaling complexity.
Solution Approach 2:
The patent implements dynamic switching between dedicated and shared control signaling modes based on the number of active access terminals. When the number of terminals exceeds a threshold, the system transitions to shared signaling mode to reduce complexity while maintaining adequate scheduling reliability through statistical multiplexing.
2Device complexity
If shared control signaling is used for multiple access terminals, then the device complexity and overhead are reduced, but the precision of individual terminal scheduling decreases
Solution Approach 1:
The patent segments the scheduling approach into two modes: dedicated mode for individual terminal precision and shared mode for multiple terminals. In shared mode, the system uses statistical multiplexing and priority-based scheduling to achieve adequate precision without the overhead of individual dedicated signaling for each terminal.
Solution Approach 2:
The patent changes the scheduling parameters and methods based on the number of active terminals. When shared signaling is used, the system adjusts scheduling parameters such as time slots, priority levels, and resource allocation to maintain sufficient scheduling precision while reducing overall system complexity.
3Productivity
If the access router transmits in every time slot, then the productivity of data transmission is improved, but the loss of energy increases due to continuous transmission
Solution Approach 1:
The patent implements periodic action by having the access router transmit control information only at the beginning of each time slot rather than continuously. This periodic transmission maintains productivity by ensuring terminals are informed of scheduling decisions while significantly reducing energy consumption compared to continuous transmission.
Solution Approach 2:
The patent maintains the continuity of useful action by ensuring that control signaling is transmitted at regular intervals to keep the system operational and terminals informed. This continuous availability of control information ensures productivity is not compromised while the transmission is limited to necessary intervals rather than continuous operation.
Data Source
AI summary
A method of managing contention in a wireless network is described. The wireless network may include an access router and a plurality of access terminals connectable to the base station. The method may include designating a data slot as a downlink slot or an uplink slot, and sending a signal from the access router to the access terminals to indicate the designation of the data slot. The access router may determine whether the data slot should be designated as a downlink slot or an uplink slot by assessing information such QoS (quality of service) requirements contained in a REQ message received from one or more of the access terminals, and information regarding buffer level received from one or more of the access terminals.