PEI Bitmap Positioning for TRS Availability Signaling

Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing tracking reference signal (TRS) availability information, particularly in the context of paging early indications (PEI) in New Radio (NR) networks, leading to inefficiencies in resource allocation and UE power consumption.

Innovation Solution

The method involves transmitting and receiving PEI PDCCH communications with TRS availability information based on a specified length of a bitmap, starting at a designated bit location, to accurately indicate TRS transmission, thereby optimizing resource allocation and power usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If TRS availability information is included in PEI PDCCH communications, then resource allocation efficiency is improved, but UE power consumption increases

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidUE power consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies preliminary action by providing TRS availability information in advance through PEI PDCCH communications before actual TRS transmission. This allows UEs to prepare for upcoming TRS transmissions by checking availability bits in the PEI, enabling them to wake up only when TRS is actually available rather than continuously monitoring, thus improving resource allocation while managing power consumption effectively.

Inventive Principle:

Principle #10Preliminary action

2Loss of information

If bitmap length is increased to indicate more PEI information, then information completeness is improved, but message size increases

Engineering Contradiction:

Improveinformation completenessVSAvoidmessage size

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting the bitmap length in PEI PDCCH communications based on the number of TRS occasions. Instead of using a fixed-length bitmap, the system adapts the bitmap size to match the actual number of TRS occasions that need to be indicated, thereby maintaining information completeness while minimizing the message size and avoiding transmission of unnecessary bits.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If TRS transmission is aligned with actual network conditions, then resource utilization is improved, but system complexity increases

Engineering Contradiction:

Improveresource utilizationVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by providing TRS availability information in advance through PEI PDCCH communications before actual TRS transmission. This allows UEs to prepare for upcoming TRS transmissions by checking availability bits in the PEI, enabling them to wake up only when TRS is actually available rather than continuously monitoring, thus improving resource allocation while managing power consumption effectively.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies feedback mechanisms where the network entity monitors UE power consumption and channel conditions, then adjusts TRS transmission patterns accordingly. The PEI PDCCH communications carry availability information based on current network conditions, creating a feedback loop that optimizes resource utilization while adapting to changing system states without requiring complex real-time processing at the UE side.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12550120B2Location of tracking reference signal availability information

Publication Date: 2026.02.10 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a paging early indication (PEI) physical downlink control channel communication with tracking reference signal (TRS) availability information at a location that is based at least in part on a length of a bitmap to be used for indicating a PEI. The UE may receive a TRS if the TRS availability information indicates that the TRS is to be transmitted. Numerous other aspects are described.