Random Access Method Reducing Signaling Overhead via Identifier Allocation

Solution Overview

Problem

Existing random access methods in wireless communications systems require significant resources and result in high signaling overheads due to the repetitive nature of preamble sequences used for network access.

Innovation Solution

A method where a network device allocates a first access network identifier to user equipment based on identification information and buffer status report data, reducing the need for repetitive preamble sequences and directly allocating resources, thereby minimizing resource usage and signaling overheads.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If preamble sequence manner is used for random access, then terminal can establish wireless connection with network side device, but resources consumed and signaling overheads increase significantly

Engineering Contradiction:

Improveconnection establishmentVSAvoidresources consumed

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent extracts the essential identification function from the preamble sequence and concentrates it into a compact ID field within the uplink shared channel message. This separates the connection establishment function from the resource allocation function, allowing the network to allocate resources directly without requiring the terminal to send repetitive preamble sequences, thereby significantly reducing resource consumption while maintaining reliable connection establishment.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies preliminary action by having the network side device prepare and allocate resources in advance based on the identification information received from the terminal. The network device can pre-allocate uplink shared channel resources and downlink physical downlink shared channel resources before the actual data transmission begins, eliminating the need for the terminal to send multiple preamble sequences and reducing overall resource consumption.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If preamble sequence manner is used for random access, then terminal can establish wireless connection with network side device, but signaling overheads increase significantly

Engineering Contradiction:

Improveconnection establishmentVSAvoidsignaling overheads

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent extracts the essential identification function from the preamble sequence and concentrates it into a compact ID field within the uplink shared channel message. This separates the connection establishment function from the resource allocation function, allowing the network to allocate resources directly without requiring the terminal to send repetitive preamble sequences, thereby significantly reducing resource consumption while maintaining reliable connection establishment.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent merges the identification information and resource allocation information into a single integrated message exchange. The terminal sends identification information in the uplink shared channel message, and the network device responds with resource allocation information in the same communication framework, eliminating the need for separate preamble sequence transmissions and reducing signaling overheads.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If preamble sequence manner is used for random access, then terminal can establish wireless connection with network side device, but access efficiency decreases

Engineering Contradiction:

Improveconnection establishmentVSAvoidaccess efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies preliminary action by having the network side device prepare and allocate resources in advance based on the identification information received from the terminal. The network device can pre-allocate uplink shared channel resources and downlink physical downlink shared channel resources before the actual data transmission begins, eliminating the need for the terminal to send multiple preamble sequences and reducing overall resource consumption.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent extracts the essential identification function from the preamble sequence and concentrates it into a compact ID field within the uplink shared channel message. This separates the connection establishment function from the resource allocation function, allowing the network to allocate resources directly without requiring the terminal to send repetitive preamble sequences, thereby significantly reducing resource consumption while maintaining reliable connection establishment.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentEP3188379B1Random access method, network device and user equipment

Publication Date: 2019.08.14 HUAWEI TECH CO LTD

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AI summary

Embodiments of the present invention provide a random access method, a network device, and user equipment. The random access method provided in the present invention includes: receiving, by a network device, identification information sent by user equipment UE according to an access status; allocating, by the network device, a first access network identifier to the UE according to the identification information; sending, by the network device, the first access network identifier to the UE; and allocating, by the network device, a resource to the UE according to the first access network identifier. In the embodiments of the present invention, signaling overheads for accessing a network device by UE can be reduced.