Wireless SIB1 Request Signaling for Energy-Saving Cell Broadcast
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Solution Overview
Problem
The periodic transmission of system information blocks (SIB) by network devices results in significant energy waste when there is no demand from terminal devices or no terminal devices are camped in the cell, necessitating a solution for on-demand SIB transmission to achieve energy savings.
Innovation Solution
Terminal devices determine configuration information of a first resource and transmit a request on that resource, carried in a master information block, to trigger on-demand SIB transmission, while network devices receive and respond to these requests, optimizing resource configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If periodic transmission of SIB is implemented to ensure terminal devices can access system information, then reliability of system information delivery is improved, but network energy consumption increases significantly when no terminal devices are camped in the cell
Solution Approach 1:
The patent implements dynamic SIB transmission by switching from fixed periodic transmission to on-demand transmission triggered by terminal device requests. The network device dynamically activates or deactivates SIB transmission based on whether terminals are camped in the cell, allowing the system to adapt its behavior to actual service needs and reduce energy waste during idle periods
Solution Approach 2:
The patent introduces a feedback mechanism where terminal devices send indication information to the network device to request SIB transmission. The network device monitors these requests and adjusts its transmission behavior accordingly, creating a closed-loop control system that responds to actual terminal needs and prevents unnecessary transmissions
2Loss of energy
If on-demand SIB transmission is implemented to reduce network energy consumption, then network energy efficiency is improved, but terminal devices may experience delayed access to system information
Solution Approach 1:
The patent applies preliminary action by having terminal devices send indication information in advance to request SIB transmission before actually needing the system information. This allows the network device to prepare and transmit SIB proactively, reducing the actual access delay while maintaining energy efficiency by only transmitting when requested
Solution Approach 2:
The patent utilizes periodic action by having the network device monitor for terminal requests at regular intervals and transmit SIB periodically when requests are received. This structured periodic monitoring and transmission approach balances energy efficiency with timely information delivery, avoiding both continuous transmission waste and complete idle periods
Data Source
AI summary
A method and an apparatus for wireless communications are provided. One example method includes: determining, by a terminal device, configuration information of a first resource; and transmitting, by the terminal device, a first request on the first resource. The configuration information of the first resource is carried in a master information block, and the first request is used to request an on-demand first system information block (SIB1).