Modified Encoded Radio Block for TFI Uniqueness
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Solution Overview
Problem
The existing methods for extending the Temporary Flow Identifier (TFI) space in wireless communications networks, particularly in Downlink Multi-carrier (DLMC) configurations, lead to unintended recipients concluding they have received valid radio blocks, resulting in unpredictable behavior and errors due to the limitations of current error correction and detection mechanisms.
Innovation Solution
A method involving a first device that selects specific bit positions unique to the intended recipient's eTFI value and performs modulo-2-addition with a pre-determined bit pattern to create a modified encoded radio block, and a second device that reverses this operation to determine if it is the intended recipient, ensuring accurate discrimination and backwards compatibility with existing radio block encoding techniques like FIRE code.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing methods for extending TFI space are used in DLMC configurations, then the TFI addressing space is extended, but unintended recipients conclude they have received valid radio blocks leading to unpredictable behavior and errors
Solution Approach 1:
The patent applies preliminary action by modifying the encoded radio block before transmission through XOR operations with eTFI-specific bit patterns. The transmitter pre-processes the radio block by selecting bit positions and applying modulo-2-addition with predetermined patterns unique to each eTFI value, ensuring that only the intended recipient can successfully decode the block without false positives among other devices monitoring the same resources.
Solution Approach 2:
The patent implements local quality by making the bit positions selected for modification unique to each eTFI value. Instead of applying a uniform modification across all eTFI values, the system selects specific bit positions that are locally optimized for each recipient's eTFI, ensuring that the modification pattern is distinctive and can only be correctly reversed by the intended recipient with the matching eTFI.
2Adaptability or versatility
If eTFI values are assigned to multiple devices in DLMC configuration, then device capacity is increased, but discrimination between intended and unintended recipients becomes difficult
Solution Approach 1:
The patent applies parameter changes by utilizing the eTFI value as a variable parameter that determines the specific bit positions and modification patterns applied to each radio block. By changing the modification parameters based on the recipient's eTFI value, the system enables multiple devices to share the same resources while maintaining precise discrimination through unique parameter combinations for each device.
Solution Approach 2:
The patent introduces an intermediary mechanism through the use of predetermined bit patterns that mediate between the eTFI value and the radio block modification. These bit patterns act as intermediaries that translate the eTFI identifier into specific modification operations, enabling the system to handle multiple devices with eTFI values while maintaining accurate recipient discrimination through the intermediary transformation process.
3Productivity
If radio blocks are sent on shared PDCH resources monitored by multiple devices, then resource utilization is improved, but false positives occur when unintended recipients decode blocks successfully
Solution Approach 1:
The patent applies segmentation by dividing the radio block into specific bit positions that are selectively modified based on the recipient's eTFI value. Instead of modifying the entire block uniformly, the system segments the modification process to apply changes only to specific bit positions determined by the eTFI, allowing multiple devices to monitor the same resources while maintaining distinguishable modification patterns for each intended recipient.
Data Source
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AI summary
Method performed by a first device (101) for sending a modified encoded radio block to a second device (102). The first device (101) and the second device (102) operate in a wireless communications network (100). The first device selects (501) a set of bit positions of an encoded radio block that has the second device (102)as intended recipient. The set of bit positions is unique to a value of an extended Temporary Flow Identifier, eTFI, assigned to the second device (102), or the set of bit positions is unique to a case in which no eTFI has been assigned to the second device (102). The first device performs (502) a modulo-2-addition of the selected set of bit positions of the encoded radio block with a pre-determined bit pattern, to obtain a modified encoded radio block. The first device sends (503) the modified encoded radio block to the second device (102).