5G SSB Resource Location Indication for Network Access

Solution Overview

Problem

In 5G communication systems, terminal devices face increased detection complexity and delay due to the need to perform blind detection on multiple synchronization signal blocks (SSBs) without prior information about which SSBs are associated with system information, leading to inefficient network access.

Innovation Solution

The method involves determining and indicating the resource location of SSBs associated with control information, allowing terminal devices to directly access the relevant resource location without blind detection, by using transmission modes such as frequency-domain mapping modes, orthogonal cover codes, or CRC masks to differentiate between SSBs with and without control information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal device performs blind detection on multiple SSBs to find the one associated with RMSI, then the terminal device can successfully access the network, but the detection complexity and access delay are increased

Engineering Contradiction:

Improvenetwork access successVSAvoidaccess delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The network device performs preliminary action by pre-configuring and indicating the association relationship between SSBs and RMSI to the terminal device before the terminal device needs to access the network. This is achieved through broadcasting SSB configuration information that includes indicators (such as SSB-index-to-RMSI mapping) that tell the terminal device which SSBs are associated with RMSI in advance, eliminating the need for blind detection and reducing access delay

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary mechanism - the SSB configuration information broadcast by the network device - that mediates between the network device and terminal device. This intermediary carries indication information about SSB-RMSI associations, allowing the terminal device to efficiently identify the correct SSB without exhaustive search, thus resolving the contradiction between reliable access and reduced delay

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the terminal device performs blind detection on multiple SSBs to identify the one associated with RMSI, then the terminal device can find the correct SSB, but the detection complexity is increased

Engineering Contradiction:

ImproveSSB identification accuracyVSAvoiddetection complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The network device performs preliminary action by pre-configuring and indicating the association relationship between SSBs and RMSI to the terminal device before the terminal device needs to access the network. This is achieved through broadcasting SSB configuration information that includes indicators (such as SSB-index-to-RMSI mapping) that tell the terminal device which SSBs are associated with RMSI in advance, eliminating the need for blind detection and reducing access delay

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary mechanism - the SSB configuration information broadcast by the network device - that mediates between the network device and terminal device. This intermediary carries indication information about SSB-RMSI associations, allowing the terminal device to efficiently identify the correct SSB without exhaustive search, thus resolving the contradiction between reliable access and reduced delay

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If multiple SSBs are configured in one bandwidth for flexible scheduling, then the system implementation flexibility is improved, but the terminal device's detection complexity and power consumption are increased

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The network device performs preliminary action by pre-configuring and indicating the association relationship between SSBs and RMSI to the terminal device before the terminal device needs to access the network. This is achieved through broadcasting SSB configuration information that includes indicators (such as SSB-index-to-RMSI mapping) that tell the terminal device which SSBs are associated with RMSI in advance, eliminating the need for blind detection and reducing access delay

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary mechanism - the SSB configuration information broadcast by the network device - that mediates between the network device and terminal device. This intermediary carries indication information about SSB-RMSI associations, allowing the terminal device to efficiently identify the correct SSB without exhaustive search, thus resolving the contradiction between reliable access and reduced delay

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11626947B2Communication method and communications device

Publication Date: 2023.04.11 HUAWEI TECH CO LTD

AI summary

A method includes: determining first indication information, where the first indication information indicates a resource location of a second synchronization signal block, and the second synchronization signal block is associated with control information; and sending a first synchronization signal block, where a physical broadcast channel in the first synchronization signal block carries the first indication information.