PEI Signaling Using Multiplexed TRS for Group Paging

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently conveying additional information through paging early indicators (PEI) without excessive resource usage, particularly when targeting multiple wireless device groups, as current methods do not adequately support multiplexing of TRS resources to optimize resource usage and detection performance.

Innovation Solution

The method involves configuring and transmitting multiple TRS resources efficiently to convey additional information by differentiating PEI-TRS groups through time/frequency locations, sequence generators, or sequence hypotheses, allowing for optimized resource allocation and power savings in wireless devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If multiple TRS resources are transmitted to convey additional information to multiple WD groups, then the information payload capacity is improved, but the network resource consumption increases

Engineering Contradiction:

Improveinformation payload capacityVSAvoidnetwork resource consumption

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The patent combines multiple TRS resources into a single multiplexed resource by using different sequence hypotheses to represent different information states. Instead of transmitting separate TRS resources for each information bit, the system multiplexes multiple information states into one resource through sequence selection, thereby reducing network resource consumption while maintaining information payload capacity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

A single TRS resource is designed to serve multiple functions by incorporating sequence hypotheses that can represent different information states. The same time-frequency resource can convey multiple bits of information depending on which sequence hypothesis is detected, making the resource universal and reducing the need for additional dedicated resources.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple TRS resources are transmitted to target multiple WD groups, then the ability to address specific groups is improved, but the complexity of resource management increases

Engineering Contradiction:

Improvegroup targeting capabilityVSAvoidresource management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the WD population into different groups and assigns each group specific sequence hypotheses. This segmentation allows the network to target specific groups by simply selecting which sequence hypotheses to transmit, without requiring complex resource allocation management for each group. The sequence hypothesis index acts as a group identifier.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of allocating different time-frequency resources to different WD groups (which increases management complexity), the patent inverts the approach by using the same resource with different sequence hypotheses to identify different groups. This inversion simplifies resource management while maintaining group targeting capability.

Inventive Principle:

Principle #13The other way round (Inversion)

3Device complexity

If traditional PEI signaling is used without additional information, then the signaling format is simple, but the ability to convey useful information is limited

Engineering Contradiction:

Improvesignaling format simplicityVSAvoidinformation conveyance capability

Core Design Contradiction:

Device complexityVSLoss of information

Solution Approach 1:

The patent changes the parameter used for information encoding from time-frequency resource allocation to sequence hypothesis selection. This parameter change maintains the simplicity of the signaling format (still using the same time-frequency resource structure) while dramatically improving information conveyance capability by utilizing the sequence domain for additional information encoding.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12563527B2Signaling paging early indicators (PEI) with additional information

Publication Date: 2026.02.24 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A method, system and apparatus for signaling paging early indicators (PEI) with additional information. According to one aspect, a method includes signaling to the plurality of wireless devices (WDs) tracking reference signal (TRS) configurations for each of N paging subgroups of WDs, each TRS configuration being associated with an instance of additional information out of a set of possible instances of additional information. The method also includes transmitting to the at least one WD a TRS conveying the paging early indicator (PEI) in accordance with a TRS configuration for a particular paging subgroup of the N paging subgroups, the TRS configured to indicate to the at least one WD a subsequent paging occasion (PO) to be monitored by the at least one WD, the TRS being associated with a particular additional information instance out of the set of possible additional information instances.