Base Station Control Data Transmission via Shared Data Channel

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Solution Overview

Problem

In wireless communication systems, especially in cellular networks with smaller cells like microcells, picocells, and femtocells, interference between base stations and wireless communication devices leads to performance degradation of control channels, as conventional systems assume only the base station transmits control data within a control channel, not efficiently managing control data transmission.

Innovation Solution

A controlling base station transmits control data within a data channel allocated by the communication specification, allowing control information to be sent to wireless communication devices, thereby reducing interference and enhancing communication efficiency by utilizing the data channel for control signal transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If control data is transmitted only through dedicated control channels by the serving base station, then control channel reliability is maintained, but interference between base stations increases and resource utilization decreases

Engineering Contradiction:

ImproveinterferenceVSAvoidcontrol channel structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges control data transmission with data channel transmission by allowing the serving base station to transmit control data intended for wireless devices in other cells through shared data channels. This combines previously separate control and data transmission functions, reducing the number of dedicated control channels needed and thereby reducing interference between base stations.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent makes data channels universal by enabling them to carry both data traffic and control information simultaneously. The data channel is designed to handle multiple functions: transmitting user data, control data for same-cell devices, and control data for devices in other cells, thereby eliminating the need for separate dedicated control channels.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If separate control channels are allocated for each base station, then control signal reliability is ensured, but resource allocation efficiency decreases and system capacity is reduced

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidcontrol data transmission

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The data channel is designed to perform multiple functions simultaneously: carrying user data, transmitting control information for devices in the serving cell, and transmitting control information for devices in other cells. This multi-functional approach improves resource allocation efficiency by eliminating dedicated control channels while maintaining control data transmission reliability through proper addressing and routing.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The network controller acts as an intermediary that coordinates control data transmission across multiple base stations. It manages the routing of control data through the data channel, ensuring that control information reaches the correct wireless device even when transmitted from a base station that is not the device's serving base station, thereby maintaining reliability without dedicated control channels.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If traditional control channel transmission is used, then control information is reliably delivered, but the system cannot efficiently support smaller cells with limited backhaul resources

Engineering Contradiction:

Improvesupport for smaller cellsVSAvoidbackhaul resource consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The data channel serves multiple purposes including transmitting user data, control information for local devices, and control information for devices in other cells. This eliminates the need for separate control channels that would consume additional backhaul resources, making the system more adaptable to small cells with limited backhaul capacity while reducing overall resource consumption.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines control plane and user plane transmissions through the same data channel infrastructure. By merging control data transmission with data transmission, the system reduces the total resource consumption for small cells that lack dedicated backhaul resources, enabling these cells to efficiently support both control and data traffic through shared resources.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10306616B2Control data transmission over a data channel by a controlling base station

Publication Date: 2019.05.28 KYOCERA CORP

AI summary

A controlling base station sends, to a wireless communication device, control data related to communication between a communication base station and the wireless communication device. The control data is transmitted in accordance with a communication specification and is transmitted to allow reception by the wireless communication device of the control data within a data channel having a frequency and time allocated by the communication specification for the wireless communication device to receive data transmissions from the communication base station.