Wake-Up Receiver Mobility Management for Zero-Power Devices
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Solution Overview
Problem
Conventional communication systems face challenges in mobility management for mobile zero power devices due to limited power harvesting and simple receiver modules, which hinder accurate measurement of signal strength, leading to inefficient cell reselection and handover processes.
Innovation Solution
Implement mobility management based on reference signal measurement results, decoding of target messages or channels, and power harvesting information to enable flexible mobility management for zero power devices and ambient devices with wake-up receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional mobility management methods are used, then existing communication protocols can be maintained, but accurate measurement of signal strength cannot be achieved due to limited power harvesting and simple receiver modules
Solution Approach 1:
The patent applies partial action by using wake-up receivers that perform only essential signal detection functions rather than complete signal processing. The wake-up receiver detects reference signals to determine signal strength for mobility management, while full-scale signal processing is performed only when necessary, thus achieving adequate measurement precision without requiring excessive power harvesting capability.
2Measurement precision
If simple receiver modules are used in zero power devices, then power consumption is reduced, but accurate measurement of signal strength becomes difficult
Solution Approach 1:
The patent segments the receiver functionality into two parts: a simple wake-up receiver module that performs basic signal detection for mobility management, and a more complex main receiver that activates only when needed for full communication. This segmentation allows the device to maintain simple receiver architecture for low power consumption while achieving accurate signal strength measurement through the wake-up receiver's specialized detection capability.
3Adaptability or versatility
If mobility management is implemented for zero power devices, then flexible serving device selection is enabled, but accurate reference signal measurement is challenging due to limited power
Solution Approach 1:
The patent applies self-service by enabling the wake-up receiver to autonomously detect reference signals and provide measurement information for mobility management decisions. The wake-up receiver independently performs signal strength measurement without requiring external power or complex processing, allowing the zero power device to make adaptive mobility management decisions based on self-measured signal conditions.
Data Source
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AI summary
Embodiments of the present application provide a method and a device for wireless communication, which can realize more flexible mobility management and are suitable for zero-power devices, ambient power-enabled devices, or devices having a wake up receiver, The method for wireless communication comprises: performing, by a first communication device, mobility management according to first information, wherein, the first communication device is a zero-power device or an ambient power-enabled device, or the first communication device is a device having a wake up receiver, the mobility management comprises at least one of the following: service device selection, service device reselection, and service device switching; wherein, the first information is at least one of the following: a reference signal measurement result of a service device and/or a candidate device, a decoding result of a target message, a decoding result of a target channel, and energy harvesting information of the first communication device (S210).