5G Paging via Target SSB Frequency Mapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G New Radio (NR) networks, the high number of beams in high-frequency cells increases the signaling load when paging a user equipment (UE), as the paging message needs to be transmitted under each beam, resulting in excessive network load.
Innovation Solution
A method where a network device determines a target synchronization signal block (SSB) from multiple SSBs of a current wideband carrier and transmits the paging message to the UE in the frequency domain location where the target SSB is located, reducing the number of transmissions required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the paging message is transmitted under each beam of each cell, then the UE can be reliably paged in high-frequency cells with multiple beams, but the signaling load of the network increases significantly
Solution Approach 1:
The patent merges multiple beam-specific paging transmissions into a single wideband carrier paging transmission. Instead of transmitting the paging message separately on each of the 64 beams, the network device transmits one paging message on the wideband carrier that spans multiple frequency resources, thereby combining multiple transmission instances into one and reducing signaling load while maintaining paging reliability.
Solution Approach 2:
The wideband carrier serves multiple functions simultaneously: it provides synchronization signals, broadcasting information, and paging messages across multiple frequency resources. By making the paging transmission universal across the wideband carrier rather than beam-specific, the system achieves multi-functionality that reduces overall signaling requirements while ensuring UEs can be reached regardless of which beam they are currently receiving.
2Adaptability or versatility
If the paging message is transmitted 64 times in one cell for high-frequency cells, then all UEs can be reached regardless of beam, but the network transmission load increases excessively
Solution Approach 1:
The patent combines 64 separate paging transmissions across different beams into a single paging transmission on the wideband carrier. The wideband carrier spans multiple frequency resources that correspond to multiple beams, allowing one transmission to reach UEs regardless of which beam they are monitoring, thereby merging 64 operations into one and improving network efficiency.
Solution Approach 2:
The patent transitions from beam-domain paging (transmitting separately on each beam) to frequency-domain paging (transmitting once on a wideband carrier spanning multiple frequencies). This dimensional change from time/beam resources to frequency resources allows the system to achieve the same UE coverage with fewer transmissions by utilizing the frequency dimension of the wideband carrier.
Data Source
Figure 1~4
Figure 5~8
AI summary
Provided are a method for paging, a network device, and a terminal device. The method for paging comprises: a network device determining a target synchronization signal block (SSB) in a plurality of SSBs of a current bandwidth carrier; and the network device sending a paging message of the terminal device to the terminal device at a frequency domain location where the target SSB is located. In embodiments of the present invention, a target SSB is determined in a plurality of SSBs of a current bandwidth carrier, such that a network device only needs to send a paging message of a terminal device to the terminal device at a frequency domain location where the target SSB is located, effectively reducing load on the network side in the sending of paging messages.