Wireless Frame Allocation Reducing Scheduling Overhead
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in scheduling and bandwidth allocation for data packets with varying quality of service (QoS) requirements, particularly for voice traffic, leading to high overhead and sub-optimal modulation and coding selections.
Innovation Solution
The method involves generating a transmission map that allocates frequency and time slots for periodic data packets across multiple frames, using a modified information element to designate specific slots for periodic data types, reducing overhead and allowing for efficient modulation and coding selections, and adaptive hybrid automatic repeat request (HARQ) re-transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bandwidth allocation information is included in every transmission frame to support periodic data packets, then transmission reliability and scheduling accuracy are improved, but transmission overhead increases significantly
Solution Approach 1:
The patent applies preliminary action by including bandwidth allocation information only in the first transmission frame of a periodic data packet stream, rather than repeating it in every frame. This preliminary allocation establishes the frequency and time slots for all subsequent periodic transmissions, eliminating the need for redundant allocation information in later frames while maintaining complete scheduling control.
Solution Approach 2:
The patent makes the initial bandwidth allocation information universal by designing it to cover multiple future transmission frames simultaneously. A single allocation message specifies frequency and time slot assignments that apply across an entire periodic interval, allowing one piece of information to serve multiple transmission instances rather than requiring separate allocations for each frame.
2Manufacturing precision
If detailed scheduling information is provided for every periodic frame, then transmission accuracy and QoS guarantee are improved, but system complexity and processing burden increase
Solution Approach 1:
The system performs preliminary scheduling by establishing complete frequency and time slot allocations in advance for all periodic data packets. This upfront planning phase creates a comprehensive transmission schedule that eliminates the need for complex real-time scheduling decisions in subsequent frames, reducing processing burden while maintaining precise scheduling control.
Solution Approach 2:
The patent segments the scheduling function into two distinct parts: an initial allocation phase that establishes the complete periodic schedule, and subsequent execution phases that simply follow the pre-established pattern. This segmentation separates the complex scheduling decision-making from the simpler frame-by-frame transmission execution, reducing overall system complexity.
3Reliability
If bandwidth allocation is optimized for voice traffic with high QoS requirements, then voice transmission quality is improved, but overhead consumes up to 50% of downlink frames
Solution Approach 1:
The patent applies preliminary action by establishing complete bandwidth allocations for voice traffic in the initial frame, including all necessary frequency and time slot assignments for the entire periodic interval. This upfront allocation ensures voice packets receive guaranteed resources without requiring repeated overhead messages in subsequent frames, dramatically reducing overhead consumption while maintaining high transmission quality.
Solution Approach 2:
The patent implements periodic action by creating a repeating transmission pattern based on the initial allocation. Once the frequency and time slots are assigned in the first frame, the same allocation pattern repeats automatically for all subsequent periodic voice packets, eliminating the need for continuous overhead signaling and reducing overhead to minimal periodic updates only when allocation changes are needed.
Data Source
AI summary
Methods of allocating a plurality of periodically distributed frames of communication between a first wireless transceiver and a second wireless transceiver are disclosed. One method includes detecting periodic data for transmission between the wireless base station and the wireless mobile unit. A transmission map that maps frequency and time slots is generated for transmission of the data packets. Allocation information is included within less than all of a plurality of transmission maps of the plurality of periodically distributed frames. The allocation information designates frequency and time slots in which data packets identified as a periodic data type are transmitted to the second wireless transceiver for the plurality of periodically distributed frames.