Narrowband Terminal Paging via Radio Capability Detection
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Solution Overview
Problem
Narrowband terminals fail to detect paging messages scheduled over the Physical Downlink Control Channel (PDCCH) across all frequency bands, preventing successful paging by the network side.
Innovation Solution
Incorporating narrowband terminal information into paging messages to enable base stations to determine and transmit paging messages according to the specific radio capabilities of the narrowband terminals, ensuring they can detect the messages and access the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging messages are scheduled over PDCCH across all frequency bands, then broadband terminals can be paged successfully, but narrowband terminals cannot detect the paging messages
Solution Approach 1:
The paging message is segmented into two parts: a first part carried on PDCCH for broadband terminals, and a second part carried on PDSCH for narrowband terminals. This segmentation allows each terminal type to receive paging messages through channels they can detect, resolving the contradiction between broadband paging reliability and narrowband terminal adaptability
Solution Approach 2:
The PDSCH channel acts as an intermediary for narrowband terminal paging. Since narrowband terminals cannot detect PDCCH, the network device uses PDSCH as an alternative transmission channel, mediated by configuration information that guides the terminal to the correct resources, enabling narrowband terminals to receive paging messages
2Adaptability or versatility
If dedicated configuration information is provided for narrowband terminals, then narrowband terminals can access the network, but the network device needs to store and manage additional terminal-specific parameters
Solution Approach 1:
The network device pre-configures and stores paging message configuration information including resource allocations, modulation schemes, and coding rates specific to narrowband terminals before paging occurs. This preliminary action enables the network device to quickly retrieve and transmit appropriate paging messages without real-time computation, reducing operational complexity while maintaining narrowband terminal access capability
Solution Approach 2:
The system changes key transmission parameters (bandwidth, modulation scheme, coding rate) based on terminal type. Narrowband terminals use reduced bandwidth and simplified modulation compared to broadband terminals. These parameter changes allow the network to support multiple terminal types with different capabilities without requiring complete system redesign, managing complexity through standardized parameter sets
Data Source
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AI summary
Embodiments of the present invention disclose a method, a network device, and a base station for paging a narrowband terminal, where the method includes: determining that a paging message for paging a narrowband terminal needs to be sent; sending a paging message including narrowband terminal information to a base station, so that the base station obtains a radio capability of the narrowband terminal according to the narrowband terminal information and transmits the paging message according to the radio capability of the narrowband terminal. In the embodiments of the present invention, after it is determined that a paging message is used to page a narrowband terminal, because narrowband terminal information is added in the paging message, a base station is allowed to transmit the paging message according to a radio capability of the narrowband terminal. In the embodiments of the present invention, because the paging message is transmitted according to the radio capability aof the narrowband terminal, it can be ensured that the narrowband terminal can detect the paging message, thereby implementing paging access of the narrowband terminal.