Voice Packet Transmission Using Fixed Resources and Adaptive MAC PDU Length
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Solution Overview
Problem
Current voice packet transmission methods in wireless communication networks face increased system overhead due to repeated resource allocation information transmission and resource wastage when fixed resources are allocated but not utilized efficiently, especially during intermittent voice packet transmission.
Innovation Solution
Generating voice data of a fixed length, incorporating a Forward Error Correction (FEC) code, and transmitting it through a fixed resource, which adjusts the length of the voice packet data unit (MAC PDU) based on the voice packet rate to prevent resource wastage and optimize transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If variable resource allocation is used to dynamically allocate resources for voice service, then resource utilization efficiency is improved, but system overhead increases due to repeated transmission of resource allocation information
Solution Approach 1:
The base station performs preliminary determination of resource allocation information before transmission. The determining unit determines resource allocation information for the mobile station in advance based on channel conditions and traffic requirements, so that the mobile station can directly use the pre-determined resource without repeated allocation signaling, thereby reducing system overhead while maintaining efficient resource utilization
Solution Approach 2:
The resource allocation mechanism is designed to serve multiple functions simultaneously: it allocates resources for voice packets, provides channel quality adaptation, and enables efficient spectrum utilization all through a single resource allocation information structure, reducing the need for separate signaling messages
2Quantity of substance
If fixed resource allocation is used to allocate resources for voice service, then system overhead is reduced by transmitting resource allocation information only once, but resource wastage occurs when voice packets are not transmitted intermittently
Solution Approach 1:
The resource allocation system transitions from a static fixed allocation to a dynamic allocation mechanism. The base station continuously monitors the mobile station's channel conditions and voice traffic patterns, dynamically adjusting resource allocation information to match actual transmission needs, thereby avoiding resource wastage during intermittent transmission while maintaining low system overhead
Solution Approach 2:
The system changes key parameters of resource allocation based on observed traffic patterns and channel conditions. When voice packets are transmitted intermittently, the resource allocation information is adjusted to allocate resources only during active transmission periods, transforming the allocation from a fixed static parameter to a dynamically changed parameter that adapts to actual usage
3Manufacturing precision
If resource allocation information is repeatedly transmitted in each resource allocation cycle, then resource allocation accuracy is improved, but transmission delay increases
Solution Approach 1:
Resource allocation information is determined and prepared in advance before the actual transmission cycle begins. The base station pre-calculates the optimal resource allocation based on predicted channel conditions and traffic patterns, so that when the transmission cycle starts, the mobile station can immediately use the pre-prepared allocation information without waiting for repeated signaling exchanges, thereby maintaining accuracy while reducing delay
Data Source
AI summary
An apparatus and method for transmitting a voice packet in a wireless communication network are provided. The method includes generating voice data of a fixed length, which includes a voice packet having a length that is determined according to a rate of the voice packet, and a Forward Error Correction (FEC) code, and transmitting the generated voice data through a fixed resource.