8-Port SRS Transmission With N-Symbol TDM and TD-OCC
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Solution Overview
Problem
The existing wireless communication systems face challenges in efficiently managing 8-port SRS transmission using N-symbol based time division multiplexing (TDM) and/or time division-orthogonal cover code (TD-OCC), particularly in scenarios where multiple antenna ports require non-overlapping time resource domains.
Innovation Solution
A method and device for transmitting and receiving SRS based on N-symbol TDM and/or TD-OCC, ensuring non-overlapping time resource domains for multiple antenna ports by repeating SRS transmission and reception every N consecutive symbols in different frequency domains, as configured by the base station or user equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If N-symbol based TDM and/or TD-OCC is applied for 8-port SRS transmission, then multiple antenna ports can be multiplexed, but time resource domains for multiple antenna ports may overlap causing interference
Solution Approach 1:
The patent divides the time resource domain into separate intervals for different antenna ports by applying N-symbol based TDM. Each antenna port is assigned specific time symbols, creating non-overlapping transmission intervals that prevent interference while enabling multiple ports to share the frequency domain.
Solution Approach 2:
The patent transitions from single-symbol transmission to multi-symbol (N-symbol) time division, adding a time dimension to the multiplexing scheme. This dimensional expansion allows multiple antenna ports to be distinguished and separated in the time domain, resolving the overlap issue while maintaining port multiplexing capability.
2Productivity
If N-symbol based TDM is used for port multiplexing, then multiple antenna ports can transmit simultaneously in frequency domain, but time resource allocation becomes more complex
Solution Approach 1:
The patent creates a universal time resource allocation framework that can accommodate different numbers of antenna ports (1, 2, 4, or 8 ports) using the same N-symbol TDM structure. The configuration parameters (N, L, M) can be adjusted to support various port configurations, simplifying the allocation mechanism while maintaining high transmission efficiency.
3Reliability
If frequency hopping is applied within N symbols, then frequency diversity is improved, but ensuring same frequency domain for all N symbols becomes difficult
Solution Approach 1:
The patent performs frequency hopping at a higher level (every L or M symbols rather than every symbol). This preliminary action of grouping N symbols together before applying frequency hopping ensures that all N symbols in a group remain in the same frequency domain, while still achieving frequency diversity through periodic hopping between groups.
Data Source
AI summary
A method, according to the present disclosure, comprises receiving, from a base station, SRS configuration information, repeating an operation of transmitting the SRS to the base station every N consecutive symbols in a first frequency domain, L times, and repeating an operation of transmitting the SRS to the base station every N consecutive symbols in a second frequency domain, L or M times. The transmission of the SRS is related to multiple antenna ports within the UE, and time resource domains related to the multiple antenna ports do not overlap with each other and are allocated within the N consecutive symbols.