18365928. MULTIPLE DEMODULATION REFERENCE SIGNAL (DMRS) PORTS IN A CODE DIVISION MULTIPLEXING (CDM) GROUP simplified abstract (Apple Inc.)

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MULTIPLE DEMODULATION REFERENCE SIGNAL (DMRS) PORTS IN A CODE DIVISION MULTIPLEXING (CDM) GROUP

Organization Name

Apple Inc.

Inventor(s)

Haitong Sun of Cupertino CA (US)

Ankit Bhamri of Bad Nauheim (DE)

Chunxuan Ye of San Diego CA (US)

Dawei Zhang of Saratoga CA (US)

Hong He of San Jose CA (US)

Huaning Niu of San Jose CA (US)

Seyed Ali Akbar Fakoorian of San Diego CA (US)

Wei Zheng of Saratoga CA (US)

MULTIPLE DEMODULATION REFERENCE SIGNAL (DMRS) PORTS IN A CODE DIVISION MULTIPLEXING (CDM) GROUP - A simplified explanation of the abstract

This abstract first appeared for US patent application 18365928 titled 'MULTIPLE DEMODULATION REFERENCE SIGNAL (DMRS) PORTS IN A CODE DIVISION MULTIPLEXING (CDM) GROUP

Simplified Explanation

The present application relates to devices and components that support multiple demodulation reference signal (DMRS) ports per code division multiplexing (CDM) group. The innovation involves the use of a frequency domain orthogonal cover code (FD-OCC) of length three or six, which allows for a higher number of DMRS ports for different DMRS configurations.

  • The FD-OCC of length three or six enables the support of at least six DMRS ports for DMRS configuration type 1 with a single symbol DMRS.
  • The FD-OCC of length three or six enables the support of at least twelve DMRS ports for DMRS configuration type 1 with a double symbol DMRS.
  • The FD-OCC of length three or six enables the support of at least nine DMRS ports for DMRS configuration type 2 with a single symbol DMRS.
  • The FD-OCC of length three or six enables the support of at least eighteen DMRS ports for DMRS configuration type 2 with a double symbol DMRS.

Potential applications of this technology:

  • Wireless communication systems
  • 5G networks
  • Mobile devices and smartphones
  • Internet of Things (IoT) devices

Problems solved by this technology:

  • Limited number of DMRS ports per CDM group
  • Insufficient support for different DMRS configurations
  • Inefficient use of frequency domain resources

Benefits of this technology:

  • Increased flexibility in configuring DMRS ports
  • Enhanced performance and capacity in wireless communication systems
  • Improved spectral efficiency
  • Better support for diverse applications and services in 5G networks.


Original Abstract Submitted

The present application relates to devices and components including apparatus, systems, and methods that support multiple demodulation reference signal (DMRS) ports per code division multiplexing (CDM) group. In an example, a frequency domain orthogonal cover code (FD-OCC) of length three or six is used, thereby allowing at least six DMRS ports for DMRS configuration type 1 with a single symbol DMRS, at least twelve DMRS ports for DMRS configuration type 1 with a double symbol DMRS, at least nine DMRS ports for DMRS configuration type 2 with a single symbol DMRS, and at least eighteen DMRS ports for DMRS configuration type 2 with a double symbol DMRS.