Base Station Paging Message Carries C-RNTI for Downlink Data

Solution Overview

Problem

The existing data transmission methods in communication protocols result in inefficient use of radio resources and increased power consumption for terminals, as they require establishing a connection and initiating a random access process for each downlink small packet data transmission.

Innovation Solution

A data transmission method that includes sending a paging message with a cell radio network temporary identifier (C-RNTI) from the base station to the terminal, allowing direct transmission of downlink data without the need for an initial random access process, thereby optimizing resource usage and reducing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal establishes a connection and enters connection state each time for downlink small packet data reception, then the downlink data can be transmitted reliably, but the radio resources are wasted and terminal power consumption increases

Engineering Contradiction:

Improvedownlink data transmission reliabilityVSAvoidterminal power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The base station performs preliminary actions by sending downlink data directly in the paging message before the terminal completes the random access process. This preliminary data transmission eliminates the need for the terminal to establish a full connection state for each small packet, thereby reducing power consumption while maintaining transmission reliability through the existing paging channel.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention extracts the downlink data transmission function from the connection establishment process. By separating these functions, the terminal no longer needs to enter connection state for every small packet reception, reducing the overhead and power consumption associated with repeated connection establishment while still ensuring reliable data delivery.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If the terminal establishes a connection and enters connection state each time for downlink small packet data reception, then the downlink data can be transmitted reliably, but the radio resources are wasted

Engineering Contradiction:

Improvedownlink data transmission reliabilityVSAvoidradio resource waste

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The base station performs preliminary actions by sending downlink data directly in the paging message before the terminal completes the random access process. This preliminary data transmission eliminates the need for the terminal to establish a full connection state for each small packet, thereby reducing power consumption while maintaining transmission reliability through the existing paging channel.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention extracts the downlink data transmission function from the connection establishment process. By separating these functions, the terminal no longer needs to enter connection state for every small packet reception, reducing the overhead and power consumption associated with repeated connection establishment while still ensuring reliable data delivery.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If the base station sends paging message with C-RNTI and transmits downlink data directly, then the transmission efficiency improves and power consumption reduces, but the process becomes more complex

Engineering Contradiction:

Improvedownlink data transmission efficiencyVSAvoiddata transmission process complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The paging message is given multi-functionality: it not only serves as a notification message but also carries downlink data directly. By making the paging message universal (serving both as a control signal and data carrier), the system achieves efficient transmission without requiring separate connection establishment procedures, thus improving productivity without significantly increasing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention merges the paging message function with the downlink data transmission function. Instead of sending separate paging messages and then establishing connections for data transfer, the system combines these into a single integrated process where the paging message itself carries the data, simplifying the overall process while improving efficiency.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11765688B2Data transmission method, device, base station, terminal and readable storage medium

Publication Date: 2023.09.19 ZTE CORP

AI summary

Provided are a data transmission method and device, a base station, a terminal and a readable storage medium. The data transmission method includes: a base station determines whether a terminal resides in a cell of the base station; in a case where the base station determines that the terminal resides in the cell of the base station, the base station sends a paging message to the terminal, wherein the paging message carries a cell radio network temporary identifier (C-RNTI); and the base station transmits downlink data according to the C-RNTI.