Paging Response Allocation for Beam Sweep Reduction

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Solution Overview

Problem

In wireless communication systems, particularly in mmW and NR systems, directional transmissions during paging procedures are inefficient due to the need for base stations to sweep through multiple beams to locate user equipment (UEs), leading to increased time, power, and resource consumption.

Innovation Solution

The method involves a base station transmitting a paging indication and providing UEs with allocated uplink transmission resources for paging responses, allowing UEs to transmit responses on specific beams, which the base station can then use to efficiently transmit paging information back to the UEs, reducing the need for sweeping through multiple beams.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If base station sweeps through multiple beams to locate UE, then directional transmission can be established, but time consumption increases

Engineering Contradiction:

Improvebeam direction accuracyVSAvoidpaging procedure time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The base station performs beam sweeping and identifies the optimal beam direction in advance during system initialization or previous communication sessions. This pre-established beam information is stored and reused for subsequent paging operations, eliminating the need for repeated beam sweeping and significantly reducing paging procedure time while maintaining accurate directional transmission.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The base station copies and reuses beam configuration information from previous successful transmissions or from uplink signal measurements. By copying the beam parameters (direction, width, power) that were previously determined to be optimal, the system avoids redundant beam sweeping operations and achieves fast paging with accurate directional transmission.

Inventive Principle:

Principle #26Copying

2Measurement precision

If base station sweeps through multiple beams to locate UE, then directional transmission can be established, but power consumption increases

Engineering Contradiction:

Improvebeam direction accuracyVSAvoidbase station power consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by stationary object

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Inventive Principle:

Principle #26Copying

3Measurement precision

If base station sweeps through multiple beams to locate UE, then directional transmission can be established, but resource consumption increases

Engineering Contradiction:

Improvebeam direction accuracyVSAvoidsystem resource efficiency

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Inventive Principle:

Principle #26Copying

4Adaptability or versatility

If base station transmits paging indication by sweeping through beams, then all UEs can be reached, but transmission overhead increases

Engineering Contradiction:

Improvepaging coverageVSAvoidair interface resources

Core Design Contradiction:

Adaptability or versatilityVSLoss of substance

Solution Approach 1:

Instead of performing full beam sweeping for every paging transmission, the base station uses locally optimized beam parameters that were previously determined to be optimal for specific UE groups or directions. Each paging indication is transmitted using the pre-determined beam configuration appropriate for that particular UE or UE group, reducing overall transmission overhead while maintaining comprehensive coverage.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10455547B2Provision of a paging response between transmissions of a paging indication and paging information

Publication Date: 2019.10.22 QUALCOMM INC

AI summary

A method for wireless communication at a user equipment (UE) includes receiving, from a base station, an indication of uplink transmission resources allocated for a paging response to a paging indication, receiving the paging indication from the base station, and transmitting, to the base station, the paging response to the received paging indication. The paging response is transmitted on at least one of the uplink transmission resources allocated for the paging response. A method for wireless communication at a base station includes identifying uplink transmission resources for paging responses, transmitting an indication of the uplink transmission resources allocated for paging responses, transmitting a paging indication to at least one UE, and receiving a paging response from one or more UEs using a receive beam sweep. The paging response is received on an associated beam on at least one of the uplink transmission resources allocated for paging responses.