Coexistence Mode Activation for Wireless Interference
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Solution Overview
Problem
Existing wireless communication systems face interference issues when user equipment communicates with multiple systems simultaneously, such as LTE and ISM or GPS, due to adjacent-band leakage and harmonic interferences, leading to potential communication failures, and conventional solutions like using higher-performance transmission filters increase equipment costs.
Innovation Solution
Implementing a co-existence working mode that allows two or more communication systems to share the same user equipment by using different time or frequency resources through time-division multiplexing (TDM) or frequency-division multiplexing (FDM), with pre-configured settings by the base station to rapidly activate this mode upon detecting interfering systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If higher-performance transmission filters are used to reduce adjacent-band leakage and harmonic interferences, then communication reliability is improved, but equipment cost increases significantly
Solution Approach 1:
The base station pre-configures co-existence working mode parameters and transmission resources before the user equipment actually needs to communicate with multiple systems. When interference is detected, the UE can immediately activate the pre-configured co-existence mode without waiting for real-time resource allocation, thus ensuring communication reliability while avoiding the need for expensive real-time filtering hardware
Solution Approach 2:
The system dynamically switches between normal working mode and co-existence working mode based on detected interference conditions. The co-existence mode dynamically allocates time-frequency resources between LTE and ISM systems, allowing the same hardware to adapt to different communication scenarios without requiring expensive fixed-performance filters for all conditions
2Adaptability or versatility
If multiple communication systems operate simultaneously in user equipment, then system versatility is improved, but interference between systems occurs due to adjacent-band leakage and harmonic interferences
Solution Approach 1:
The time-frequency resources are segmented and separately allocated to different communication systems (LTE and ISM). The base station configures specific subframes, symbols, and resource blocks for LTE data transmission, while other resources are allocated to ISM systems like WLAN or Bluetooth, thereby eliminating interference while maintaining support for multiple systems
Solution Approach 2:
The base station acts as an intermediary that coordinates resource allocation between LTE and ISM systems. By pre-configuring co-existence modes and monitoring interference conditions, the base station mediates resource sharing between the two systems, allowing them to coexist without direct interference while maintaining high system versatility
3Loss of time
If co-existence working mode is activated rapidly, then loss of time is reduced, but complexity of mode switching and resource allocation increases
Solution Approach 1:
The base station pre-configures multiple co-existence working modes with different time-frequency resource allocations before the UE needs to activate them. The configuration includes pre-defined parameters such as subframe offsets, resource block assignments, and modulation schemes. When interference is detected, the UE simply activates one of the pre-configured modes without performing complex real-time calculations, thus reducing activation time while managing complexity through pre-computation at the base station
Data Source
Figure 1A~1B
Figure 2A~3A
Figure 2B~3B
AI summary
A method for activating coexistence work mode and a base station, user equipment and system using the method are provided. The method for activating coexistence work mode includes: a user equipment in a first communication system transmits an activation mode request, which requests for entering the coexistence work mode, to the base station in said first communication system; in said coexistence work mode, using different transmission resource, said user equipment performs a first communication with said base station and performs a second communication with a device of a second communication system which is different from said first communication system, respectively; said user equipment activates said coexistence work mode based on configuration information of said coexistence work mode, wherein, the configuration information of said coexistence work mode is preset for said user equipment by said base station, and is conserved in said user equipment.