Wireless Data Transmission with Variable Redundancy Version Sequencing
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Solution Overview
Problem
Current wireless telecommunications systems face inefficiencies in repeat transmission protocols, particularly in LTE networks, due to regular periodicity and lack of frequency, time, and redundancy version (RV) diversity, which can lead to reduced communication reliability under poor channel conditions and periodic interference.
Innovation Solution
Implementing a method where redundancy versions for data transmission are transmitted in different sequence orders across varying time periods, ensuring each RV is used on different frequency resources and not in regular periodicity, thereby enhancing frequency and temporal diversity and reducing interference impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundancy versions are transmitted in regular periodicity with fixed sequence order, then transmission protocol simplicity is maintained, but communication reliability deteriorates under poor channel conditions and periodic interference
Solution Approach 1:
The patent applies dynamics by making the redundancy version transmission sequence variable rather than fixed. The sequence order is dynamically adjusted based on time period indicators, allowing the system to adapt transmission patterns to changing channel conditions while maintaining structured protocol operation. This resolves the contradiction by introducing controlled variability that improves reliability without completely randomizing the protocol.
Solution Approach 2:
The patent utilizes periodic action by implementing different sequence orders for redundancy versions in different time periods. The transmission pattern follows a periodic structure where the sequence order changes based on time period indicators, creating a rhythmic variation in transmission that avoids regular periodicity interference while maintaining protocol predictability. This allows the system to achieve diversity gain through periodic variation without excessive complexity.
2Reliability
If redundancy versions are transmitted using the same frequency resources in regular periodicity, then resource allocation simplicity is maintained, but frequency diversity is reduced leading to increased vulnerability to periodic interference
Solution Approach 1:
The patent applies dimensionality change by introducing time period as an additional dimension for resource allocation. Instead of allocating frequency resources in a simple repeating pattern, the system uses time period indicators to determine which redundancy versions are transmitted in which time periods, creating a multi-dimensional resource allocation structure. This increases frequency diversity and interference resilience while maintaining reasonable resource allocation efficiency through structured indexing.
3Reliability
If the same redundancy version sequence order is used across all time periods, then protocol implementation simplicity is maintained, but temporal diversity is reduced making the system more susceptible to time-varying channel conditions
Solution Approach 1:
The patent applies parameter changes by modifying the sequence order parameter of redundancy versions based on time period indicators. The system changes the transmission parameters (which redundancy version is transmitted when) according to the current time period, creating temporal diversity. This improves reliability under time-varying channel conditions while keeping the sequence management complexity manageable through systematic parameter adjustment rules.
Data Source
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AI summary
A method of transmitting a block of data from a transmitter entity to a receiver entity in a wireless telecommunication system. The method comprises: establishing a plurality of different redundancy versions for the block of data; transmitting the plurality of different redundancy versions for the block of data in a first sequence order in a first time period; and transmitting the plurality of different redundancy versions for the block of data in a second sequence order in a second time period, wherein the second sequence order is different form the first sequence order.