18156199. PARALLEL TRANSMISSION OF PREAMBLE SEQUENCES WITH DATA LAYERS FOR IMPROVED DATA DETECTION simplified abstract (QUALCOMM Incorporated)
PARALLEL TRANSMISSION OF PREAMBLE SEQUENCES WITH DATA LAYERS FOR IMPROVED DATA DETECTION
Organization Name
Inventor(s)
Wanshi Chen of San Diego CA (US)
Renqiu Wang of San Diego CA (US)
PARALLEL TRANSMISSION OF PREAMBLE SEQUENCES WITH DATA LAYERS FOR IMPROVED DATA DETECTION - A simplified explanation of the abstract
This abstract first appeared for US patent application 18156199 titled 'PARALLEL TRANSMISSION OF PREAMBLE SEQUENCES WITH DATA LAYERS FOR IMPROVED DATA DETECTION
Simplified Explanation
The patent application describes methods, systems, and devices for improving detectability of uplink transmissions in wireless communications systems, specifically in non-orthogonal multiple access (NOMA) systems. Here are the key points:
- In NOMA systems, a base station serves a large number of user equipments (UEs) on the uplink.
- To improve detectability of uplink transmissions when reference signals are not available, UEs implement parallel transmissions of preambles with uplink data.
- UEs split the uplink data into one or more data layers and select one or more preamble layers to transmit along with the data layers.
- Preambles are sequences known to both the UE and the base station, aiding in detectability.
- Different signature sequences are assigned to each layer based on cross-correlation values, with sequences having higher cross-correlation values assigned to data layers for improved detectability.
- The layers are then scrambled into a single shared signal for transmission.
Potential applications of this technology:
- Wireless communication systems using non-orthogonal multiple access (NOMA).
- Improving detectability of uplink transmissions in wireless networks.
- Enhancing the performance and efficiency of wireless communication systems.
Problems solved by this technology:
- Lack of reference signals for uplink transmissions in NOMA systems.
- Difficulty in detecting uplink transmissions in wireless communication systems.
- Inefficient utilization of wireless network resources.
Benefits of this technology:
- Improved detectability of uplink transmissions in NOMA systems.
- Enhanced performance and efficiency of wireless communication systems.
- Optimal utilization of wireless network resources.
Original Abstract Submitted
Methods, systems, and devices for wireless communications are described. In some systems (e.g., non-orthogonal multiple access (NOMA) systems), a base station may serve a large number of user equipments (UEs) on the uplink. To improve detectability for these uplink transmissions (e.g., if reference signals are not available for the transmissions), the UEs may implement parallel transmissions of preambles with uplink data. A UE may split the uplink data into one or more data layers, and may select one or more preamble layers to transmit superposed with the data layers. These preambles may be sequences known to both the UE and the base station to aid in detectability. The UE may assign different signature sequences to each of these layers based on cross-correlation values (e.g., assigning sequences with higher cross-correlation values to the data layers for improved detectability), and may scramble the layers into a single shared signal for transmission.
