Wireless Coexistence via Dynamic Packet Size Limits

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Solution Overview

Problem

Existing wireless communication systems face interference issues due to the concurrent operation of multiple radio access technologies (RATs), leading to packet collisions and reduced channel quality, which affects the performance of devices using different wireless communication channels.

Innovation Solution

A method that dynamically adjusts packet sizes and transmission parameters based on channel quality indicators, such as RSSI and FER, to ensure packets are received within a predetermined interval, thereby reducing interference between different RATs by controlling transmit power, antenna selection, and receiver settings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple radio access technologies operate concurrently, then communication versatility is improved, but interference between channels increases causing packet collisions

Engineering Contradiction:

Improveconcurrent coexistence of multiple RATsVSAvoidinterference and packet collisions

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The system dynamically adjusts packet size limits and transmission parameters based on real-time channel conditions and interference levels. The packet size limit is not fixed but adapts according to the determined interval between control packets and channel quality indicators, allowing the system to optimize performance while managing interference between multiple RATs

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes key transmission parameters including packet size limits, transmit power levels, and timing intervals based on channel quality indicators (CQI) and interference measurements. By modifying these parameters dynamically, the system resolves the contradiction between maintaining versatile multi-RAT operation and preventing harmful interference

Inventive Principle:

Principle #35Parameter changes

2Productivity

If packet size is increased for second RAT, then data throughput is improved, but packet reception timing conflicts with control packet intervals of first RAT

Engineering Contradiction:

Improvedata throughput of second RATVSAvoidpacket reception timing synchronization

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs preliminary determination of the interval between control packets of the first RAT before establishing packet transmission for the second RAT. By calculating the packet size limit based on this predetermined interval, the system ensures that data packets from the second RAT will be received within acceptable timing windows, preventing conflicts with control packet transmissions

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The packet size limit for the second RAT is dynamically adjusted based on the determined interval between control packets. When the control packet interval is larger, larger data packets can be transmitted; when the interval is smaller, the packet size limit is reduced. This dynamic adjustment maintains both high throughput and timing synchronization

Inventive Principle:

Principle #15Dynamics

3Illumination intensity

If transmit power is increased for first transceiver, then signal strength is improved, but interference to second transceiver increases

Engineering Contradiction:

Improvesignal strength of first RATVSAvoidinterference to second RAT

Core Design Contradiction:

Illumination intensityVSObject-generated harmful factors

Solution Approach 1:

The system dynamically adjusts transmit power levels based on channel quality indicators and determined packet intervals. When channel conditions are good and control packet intervals are large, higher transmit power can be used. When interference risk increases or intervals shrink, transmit power is reduced. This parameter adaptation resolves the contradiction between signal strength and interference generation

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system uses channel quality indicators and packet reception timing feedback to continuously adjust transmit power levels. By monitoring the actual channel conditions and timing synchronization status, the system provides feedback control that optimizes signal strength while minimizing interference to the second transceiver

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11229034B2Method and apparatus for concurrent coexistence of a plurality of radio access technologies in wireless communication

Publication Date: 2022.01.18 NXP USA INC

AI summary

Aspects of the disclosure provide methods and an electronic device for wireless communication. A method includes transmitting, by a first transceiver, control packets via a first wireless communication channel using a first radio access technology. The method includes determining, by processing circuitry, a first parameter indicating an interval between transmissions of the control packets. Further, the method includes determining, based on the first parameter, a size limit for packets to be received by a second transceiver that is configured to receive the packets via a second wireless communication channel using a second radio access technology. The method includes transmitting, by the second transceiver, information indicating the size limit over the second channel so that sizes of the packets sent by the second radio access technology are such that the packets are received by the second transceiver in a time period within the interval between the transmissions of the control packets.