NR System Information Segmentation for New Terminal Access
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Solution Overview
Problem
New type of terminal devices, such as MTC or IoT devices, cannot access the network in NR due to differing system information requirements, leading to unsupported communication.
Innovation Solution
A network device sends a SIB1 and supplementary information, including access configuration and scheduling details specific to the new terminal devices, without sending a complete new SIB1, thereby reducing downlink resource overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complete new SIB1 is sent to support new terminal devices, then network access capability for new terminal devices is improved, but downlink resource overhead increases
Solution Approach 1:
The patent extracts only the necessary supplementary information needed by new terminal devices from a complete new SIB1, rather than transmitting the entire system information block. This allows new terminal devices to access the network using only the specific parameters they require (such as bandwidth part configurations, random access parameters for reduced capability devices), while avoiding transmission of redundant information that would increase downlink overhead.
Solution Approach 2:
The patent segments the system information by separating it into common information (suitable for all terminal types) and supplementary information (specific to new terminal devices). This segmentation enables the network to transmit different information sets to different terminal types, improving adaptability while controlling resource usage by only sending the segmented supplementary portion to new terminal devices rather than a complete duplicate SIB1.
2Adaptability or versatility
If a complete new SIB1 is sent to support new terminal devices, then network access capability for new terminal devices is improved, but device complexity increases
Solution Approach 1:
The patent introduces a supplementary information structure that acts as an intermediary between the existing SIB1 framework and new terminal device requirements. This intermediary structure allows new terminal devices to access necessary information without requiring a complete redesign of the SIB1, maintaining compatibility with existing terminal devices while enabling support for new device types through the added supplementary portion.
3Adaptability or versatility
If a complete new SIB1 is sent to support new terminal devices, then network access capability for new terminal devices is improved, but implementation complexity increases
Solution Approach 1:
The patent applies partial action by sending only the necessary supplementary information to new terminal devices rather than a complete new SIB1. This partial transmission approach reduces implementation complexity because the network only needs to generate and transmit the specific supplementary parameters required by new terminal devices, while existing terminal devices continue to use the original SIB1 without any changes, thereby simplifying the overall implementation.
Data Source
AI summary
A communication method and apparatus relate to the field of communication technologies, to enable a network device to support communication of a new type of terminal device without additionally sending a set of complete system information. The method includes: The network device sends a SIB1 and supplementary information. Maximum transmission bandwidth of a first terminal device is different from that of a second terminal device. The supplementary information includes first information and/or second information, the SIB1 does not include the first information, and a parameter value of the second information included in the supplementary information is different from a parameter value of the second information included in the SIB1. After receiving the SIB1 and the supplementary information, the second terminal device accesses a network based on partial information other than the second information in the SIB1 and the supplementary information. Consumed resources for downlink transmission can be reduced.