SS/PBCH Block Signaling for Expanded Candidate Index Transmission
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Solution Overview
Problem
The existing technologies face challenges in efficiently transmitting synchronization/physical broadcast channel blocks (SS/PBCH blocks) due to limitations in the number of candidate indexes and available slots, particularly in new radio (NR) systems with varying frequency bands.
Innovation Solution
The method and apparatus provide a solution by allowing for the indication of more than 64 candidate indexes for SS/PBCH blocks through indication information and extending the discovery burst transmission window beyond 5 ms, enabling the transmission of additional SS/PBCH blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of SS/PBCH blocks is increased to support higher frequency bands, then the transmission capacity is improved, but the quantity of candidate indexes becomes insufficient (limited to 64)
Solution Approach 1:
The patent introduces a new dimension to the candidate index indication by using a two-stage approach: first indicating a first candidate index, then indicating a second candidate index based on the first one. This dimensional expansion allows the system to represent more than 64 candidate positions (up to 128 or more) by combining multiple indication levels, thereby resolving the contradiction between increasing the number of SS/PBCH blocks and maintaining sufficient candidate indexes.
2Productivity
If more SS/PBCH blocks are transmitted, then the transmission efficiency is improved, but the number of available slots becomes insufficient
Solution Approach 1:
The patent applies dynamics by making the discovery burst transmission window length adjustable rather than fixed. The network device can dynamically configure the window length based on the actual number of SS/PBCH blocks that need to be transmitted. When more SS/PBCH blocks are transmitted to improve efficiency, the window length is extended accordingly, ensuring sufficient slots are available without wasting time on unnecessary transmissions.
3Reliability
If the discovery burst transmission window length is increased, then sufficient slots are provided for receiving SS/PBCH blocks, but the transmission time is extended
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the discovery burst transmission window length parameter based on the actual transmission needs. When the number of SS/PBCH blocks to be transmitted is small, the window length is reduced to minimize time loss. When more blocks need to be transmitted to ensure reliability, the window length is extended accordingly. This dynamic parameter adjustment resolves the contradiction between providing sufficient slots for reliable reception and minimizing transmission time.
Data Source
AI summary
This application provides a method for transmitting an SS/PBCH block and an apparatus. The method includes: A terminal device receives one SS/PBCH block in an SS/PBCH block burst set, and then obtains indication information based on the one SS/PBCH block. The indication information may be used to indicate candidate indexes of at least one SS/PBCH block in the SS/PBCH block burst set, and a quantity of the candidate indexes is greater than 64. For example, the quantity of candidate indexes may be 128, 160, 180, 196, 240, or the like. A network device may not be limited to 64 candidate indexes. In other words, a quantity of candidate positions used to send the SS/PBCH block is not limited to 64. Therefore, the network device may send a larger quantity of SS/PBCH blocks to the terminal device.