Base Station Receive Diversity Mode Adaptation

Solution Overview

Problem

Wireless communications networks face challenges in dynamically adapting carrier capacity to manage varying traffic levels, leading to call blocking during peak hours due to the trade-off between receiver sensitivity and channel element capacity in different receive diversity modes.

Innovation Solution

A method to dynamically reconfigure base stations between two-branch and four-branch receive diversity modes based on monitored usage thresholds, switching from four-branch mode to two-branch mode when traffic exceeds capacity to accommodate more connections while sacrificing sensitivity, and vice versa when traffic decreases.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the base station operates in four-branch receive diversity mode, then receiver sensitivity is improved, but carrier capacity is reduced

Engineering Contradiction:

Improvereceiver sensitivityVSAvoidcarrier capacity

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The base station dynamically switches between four-branch and two-branch receive diversity modes based on real-time traffic conditions. The system monitors carrier usage levels and automatically reconfigures the receive diversity mode to match current network demands, making the system adaptable rather than static.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the operational parameters of the base station by switching between different receive diversity configurations (four-branch vs. two-branch) depending on traffic conditions. This parameter change allows optimization of either sensitivity or capacity based on current network requirements.

Inventive Principle:

Principle #35Parameter changes

2Quantity of substance

If the base station operates in two-branch receive diversity mode, then carrier capacity is increased, but receiver sensitivity is reduced

Engineering Contradiction:

Improvecarrier capacityVSAvoidreceiver sensitivity

Core Design Contradiction:

Quantity of substanceVSMeasurement precision

Solution Approach 1:

The base station dynamically switches between four-branch and two-branch receive diversity modes based on real-time traffic conditions. The system monitors carrier usage levels and automatically reconfigures the receive diversity mode to match current network demands, making the system adaptable rather than static.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the operational parameters of the base station by switching between different receive diversity configurations (four-branch vs. two-branch) depending on traffic conditions. This parameter change allows optimization of either sensitivity or capacity based on current network requirements.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If the base station uses four-branch receive diversity mode during peak traffic, then call blocking increases, but receiver sensitivity is maintained

Engineering Contradiction:

Improvereceiver sensitivityVSAvoidcall handling capacity

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The base station dynamically switches between four-branch and two-branch receive diversity modes based on real-time traffic conditions. The system monitors carrier usage levels and automatically reconfigures the receive diversity mode to match current network demands, making the system adaptable rather than static.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the operational parameters of the base station by switching between different receive diversity configurations (four-branch vs. two-branch) depending on traffic conditions. This parameter change allows optimization of either sensitivity or capacity based on current network requirements.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS8818290B1Dynamically adapting a receive diversity mode of a base station

Publication Date: 2014.08.26 T MOBILE INNOVATIONS LLC

AI summary

The usage capacity of a base station operating in four-branch receive diversity mode is limited to a given number of channel resources, where each channel resource corresponds to an active user. In two-branch receive diversity mode, approximately twice as many channel resources are available, but the receiver sensitivity is less than with four-branch mode. Thus, four-branch mode provides better coverage but with less usage capacity. A base station is operated in four-branch mode to provide the best coverage while usage is low. When the number of users reaches a first threshold, prior to reaching the maximum number of users, the base station transitions to two-branch mode to accommodate an anticipated increase of users above the four-branch capacity, although with reduced coverage. When usage then falls below a second threshold, the base station transitions back to four-branch mode, again providing better coverage.