Apple inc. (20240356705). METHOD FOR PDCCH BUFFER MANAGEMENT simplified abstract

METHOD FOR PDCCH BUFFER MANAGEMENT

Organization Name

apple inc.

Inventor(s)

Yushu Zhang of Beijing (CN)

Haitong Sun of Cupertino CA (US)

Wei Zeng of Saratoga CA (US)

Hong He of San Jose CA (US)

Chunhai Yao of Beijing (CN)

Chunxuan Ye of San Diego CA (US)

Seyed Ali Akbar Fakoorian of San Diego CA (US)

Sigen Ye of San Diego CA (US)

Dawei Zhang of Saratoga CA (US)

METHOD FOR PDCCH BUFFER MANAGEMENT - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240356705 titled 'METHOD FOR PDCCH BUFFER MANAGEMENT

• • Simplified Explanation:**

The patent application describes approaches to improve the reliability of detecting the physical downlink control channel (PDCCH) when it is transmitted repeatedly with different beams. Soft combining is used, where the user equipment (UE) combines soft bits from each repetition to decode the PDCCH jointly.

• • Key Features and Innovation:**

- Soft combining of soft bits from different PDCCH repetitions for improved detection. - Buffering of soft bits in the UE to support soft combining. - Priority rule for PDCCH decoding in scenarios where buffer size exceeds UE's maximum buffer size.

• • Potential Applications:**

- 5G and future wireless communication systems. - Mobile networks with beamforming technology. - IoT devices requiring reliable control channel detection.

• • Problems Solved:**

- Enhancing the reliability of PDCCH detection in scenarios with repeated transmissions and different beams. - Managing buffer size in the UE for soft combining.

• • Benefits:**

- Improved reliability in detecting PDCCH. - Enhanced performance in wireless communication systems. - Better support for IoT devices in mobile networks.

• • Commercial Applications:**

Potential commercial applications include: - 5G network equipment manufacturers. - IoT device manufacturers. - Telecommunication companies offering advanced wireless services.

• • Questions about PDCCH Detection:**

1. How does soft combining of soft bits improve PDCCH detection reliability? 2. What are the key challenges in managing buffer size for soft combining in the UE?

• • Frequently Updated Research:**

Stay updated on the latest advancements in beamforming technology and soft combining techniques for wireless communication systems.

Original Abstract Submitted

approaches are described that enhance the reliability of physical downlink control channel (pdcch) detection where the pdcch can be transmitted repeatedly with different beams. the approaches use soft combining where the user equipment (ue) combines the soft bits from each repetition, with the combined soft bits used to jointly decode the pdcch repetitions. to support the soft combining, the ue needs to buffer the soft bits. buffering approaches include determining what contributes towards the buffering, including scenarios where one of the linked search sets (sss) is dropped, what is contributed in a linked ss set pair, how the duration of buffer counting is determined, and how the ue reports its maximum buffer size capability. in scenarios where the required buffer size exceeds the ue maximum buffer size, a priority rule may be used in the pdcch decoding using the ss sets pair, where the priority is based on the ss type, the serving cell index, the ss set id and/or the control channel resource set (coreset) id.