Wake-Up Signal Timing for Low-Power Cell Activation
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Solution Overview
Problem
Existing wireless communication networks face challenges in efficiently managing power consumption and activation latency of access nodes, particularly in scenarios where UEs are out of coverage or not receiving sidelink resource allocation, leading to suboptimal power savings and quality of service (QoS) due to the difficulty in determining which cells to activate.
Innovation Solution
Implementing a transceiver that can transmit a wake-up signal to a central transceiver in a low-power state, based on control information specifying parameters such as transmission time, frequency, and waveform, to restore the regular Synchronization Signal Block (SSB) interval, thereby enabling precise and timely activation of network infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If access nodes are placed in low-power state to save energy, then power consumption is reduced, but activation latency increases and quality of service deteriorates
Solution Approach 1:
The patent applies preliminary action by having the UE transmit a wake-up signal before the access node needs to be fully activated for service. The access node receives this preliminary wake-up signal while in low-power state, initiates activation procedures in advance, and becomes ready to serve the UE before actual communication begins. This resolves the contradiction by performing the activation action before the quality of service requirement triggers, thus reducing activation latency without sacrificing energy savings.
2Reliability
If network infrastructure is activated to maintain quality of service, then service reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies self-service by enabling the UE to autonomously trigger the wake-up signal transmission when it detects that an access node is in low-power state and needs to be activated for its service. Instead of relying on network-controlled activation mechanisms, the UE independently monitors its service needs and initiates the wake-up process, thereby ensuring quality of service reliability while avoiding unnecessary energy consumption when no service is required.
3Loss of energy
If cells are activated based on UE presence to save energy, then power consumption is reduced, but determination accuracy decreases
Solution Approach 1:
The patent applies feedback by implementing a mechanism where the UE provides feedback information about its service needs and the state of access nodes to the network. The network uses this feedback to accurately determine which cells should be activated, considering both UE presence and actual service requirements. This feedback loop enables precise determination of activation needs, resolving the contradiction between energy savings and determination accuracy.
Data Source
AI summary
Embodiments provide a transceiver for a wireless communication system, wherein the transceiver is configured to receive a control information describing at least one out ofat least one parameter of a wake-up signal,at least one low-power operating parameter of a central transceiver of the wireless communication network, anda list of one or more central transceivers that are in range of the transceiver, wherein the transceiver is configured to transmit, depending on the received control information, a wake-up signal.