UMTS Mobile Radio Data Reconstruction via Offset Transmissions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In mobile radio systems, particularly in UMTS, subscriber stations experience data loss during reception gaps due to the lack of support for compressed operating mode in MBMS, leading to incomplete and successive data reception on channels like S-CCPCH, which is exacerbated by the asynchronous nature of measurement gaps across different receiver stations.
Innovation Solution
A method where data is sent with an offset or scrambled by a second transmitter on the same resource element to compensate for reception gaps, allowing for the reconstruction of missing data by synchronizing and permuting data elements or blocks to ensure timely and complete data reception, even during inter-frequency or inter-RAT measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If reception gaps are introduced for measurements, then measurement capability is improved, but data reception completeness deteriorates
Solution Approach 1:
The transmitter sends data with time offsets or scrambling codes in advance, creating redundant data transmissions that arrive at different times. This preliminary action ensures that when reception gaps occur, the receiver can reconstruct missing data using previously received redundant transmissions, thereby maintaining data completeness while allowing measurement gaps.
Solution Approach 2:
The system changes transmission parameters by introducing time offsets and scrambling codes for redundant data transmissions. These parameter changes create multiple versions of the same data that arrive at different times, enabling the receiver to select or combine appropriate versions to compensate for data lost during reception gaps.
2Reliability
If redundant data transmission is implemented, then data reconstruction capability is improved, but transmission complexity deteriorates
Solution Approach 1:
The system creates simplified copies of the original data by applying time offsets and scrambling codes. These copies are not full redundancies but rather transformed versions that can be easily generated by the transmitter and easily processed by the receiver, reducing the complexity burden compared to full data duplication.
Solution Approach 2:
The redundant data transmission follows periodic patterns with regular time offsets. This periodic structure allows both transmitter and receiver to use predetermined, simple algorithms for generating and processing redundant data, significantly reducing the computational complexity compared to adaptive or irregular redundancy schemes.
3Loss of information
If data is sent with time offset by second transmitter, then data loss compensation is improved, but synchronization complexity deteriorates
Solution Approach 1:
The time offsets for redundant data transmissions are predetermined and established in advance through network configuration. This preliminary establishment of offset values eliminates the need for real-time synchronization calculations, allowing the system to handle data loss compensation without complex runtime synchronization procedures.
Data Source
AI summary
Methods for receiving data sent by a first emitter of a mobile telephony system to a first resource element of a resource, via a receiver, radiopockets being created during the reception, and data which is not received during the creation of the radiopockets being reconstructed by the receiver are provided. The data which is not received by the first emitter is received by a second emitter, in a temporarally offset manner, on the same resource element of the resource, between the radiopockets, and is used to reconstruct the sequence of data. A conversion is especially advantageous for carrying out a receiving method in UMTS compression mode during the reception of data which is sent continuously independently of the compression mode.