SS Block Quantity Indication via Index Mapping
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Solution Overview
Problem
In 5G communications, the high transmission bit overheads associated with notifying a terminal device of the quantity of synchronization signal blocks in a synchronization signal burst set pose a challenge, particularly due to the need for different quantities of bits to represent SS blocks on high and low frequency bands, leading to inefficient communication.
Innovation Solution
The method involves sending first indication information using m bits in a downlink signal, where m<log2N, to indicate the quantity n of synchronization signal blocks, by utilizing pre-agreed index values or simplified information, reducing overheads by specifying only necessary values and using index matching, and optionally distributing indication information across system messages and reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the network device notifies the terminal device of the quantity of SS blocks using direct indication, then the terminal device can obtain accurate synchronization information, but the transmission bit overheads increase significantly
Solution Approach 1:
The patent introduces an intermediary index value that indirectly represents the quantity of SS blocks. Instead of directly transmitting the actual quantity, the network device transmits an index that points to a pre-defined quantity in a codebook, thereby reducing the number of bits required for transmission while maintaining accurate indication capability.
Solution Approach 2:
The patent transforms the parameter representation from direct quantity values to index values. By changing the parameter encoding scheme from transmitting actual SS block quantities to transmitting indices that reference a codebook, the transmission overhead is significantly reduced while preserving the ability to accurately indicate the SS block quantity.
2Adaptability or versatility
If different quantities of bits are used for high and low frequency bands, then the indication is optimized for each band, but the system complexity increases
Solution Approach 1:
The patent creates a universal indication mechanism that works across different frequency bands. By using a common codebook and index-based indication approach, the system can serve both high and low frequency bands with the same methodology, eliminating the need for separate indication systems for each band and thereby reducing overall system complexity.
Solution Approach 2:
The patent segments the indication process into two independent parts: a codebook that defines the mapping between indices and SS block quantities, and an index transmission mechanism. This segmentation allows the same structure to be applied universally across different frequency bands without requiring band-specific customization, thus reducing system complexity while maintaining adaptability.
Data Source
AI summary
Embodiments of this application disclose an information sending and receiving method and a related device. The method may include: sending, by a network device, first indication information to a terminal device, where the first indication information is carried by using m bits in a downlink signal, and the first indication information includes related information indicating a quantity n of synchronization signal blocks SS blocks included in a synchronization signal burst set SS burst set, where m<log2N, N is a maximum value of a quantity of SS blocks supported in the SS burst set, both m and n are integers greater than 1, and n is less than or equal to N. According to the embodiments of this application, a prior-art problem that transmission overheads are relatively high when the network device indicates the quantity n of SS blocks to the terminal device can be resolved.