Sounding Reference Signal Resource Allocation in 5G Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G wireless communication systems, efficient transmission of Sounding Reference Signals (SRS) is necessary for uplink beamforming, but existing methods lack flexibility and optimal resource allocation, particularly in supporting various bandwidth parts and beamforming techniques.
Innovation Solution
A method and apparatus for resource allocation in SRS transmission, including wideband frequency hopping and time-domain resource allocation, are implemented to enable effective SRS transmission, using configuration messages with slot periodicity and offset for optimal beam management and channel information acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing SRS transmission methods are used, then basic uplink channel information can be obtained, but flexibility and optimal resource allocation are insufficient
Solution Approach 1:
The patent implements dynamic resource allocation for SRS transmission by introducing configurable time-domain parameters (periodicity, offset, duration) and frequency-domain parameters (hopping patterns, bandwidth parts). These dynamic parameters allow the system to adapt SRS transmission characteristics according to varying channel conditions and service requirements, resolving the contradiction between flexibility and complexity through parameterized control mechanisms.
Solution Approach 2:
The patent employs multiple configurable parameters including slot periodicity (1, 2, 4, 8, 16 slots), slot offset values, frequency hopping patterns, and bandwidth part configurations. By changing these parameters, the system can optimize SRS transmission for different scenarios such as beamforming, channel quality estimation, and mobility management, achieving high adaptability while maintaining manageable complexity through standardized parameter sets.
2Reliability
If wideband frequency hopping is implemented for SRS transmission, then beamforming capabilities are improved, but signal interference management becomes more challenging
Solution Approach 1:
The patent implements periodic frequency hopping patterns for SRS transmission where the frequency position changes systematically across different time slots according to configured hopping patterns. This periodic action allows the system to sweep through different frequency bands to find optimal beamforming paths while managing interference through predictable, pattern-based frequency allocation that can be coordinated across multiple users.
Solution Approach 2:
The patent introduces frequency dimension diversity through wideband frequency hopping, allowing SRS transmissions to explore multiple frequency dimensions rather than being confined to a single frequency resource. This dimensional expansion enables better beamforming by finding frequency-diverse paths while managing interference through frequency separation and orthogonal resource allocation across different users and time slots.
3Productivity
If slot periodicity and offset configuration is used for SRS transmission, then resource allocation efficiency is improved, but configuration complexity increases
Solution Approach 1:
The patent segments the time domain into slots and configures SRS transmission resources using periodicity and offset parameters that divide the time-frequency resource space into manageable units. This segmentation allows efficient resource allocation by specifying transmission patterns in terms of slot periods and offsets rather than individually configuring each transmission instance, improving productivity while keeping configuration complexity manageable through hierarchical resource organization.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An operating method of a terminal in a wireless communication system includes: receiving SRS configuration information from a base station; and transmitting an SRS according to the SRS configuration information. The SRS configuration information includes a slot configuration comprising a slot periodicity for transmitting a SRS, and a slot offset for the slot periodicity.