Grant-Free Identifier Determination for Wireless Uplink Signaling
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Solution Overview
Problem
The existing scheduling and grant mechanisms in wireless networks, such as LTE, incur significant signaling resource overhead, especially for small data transmissions, necessitating an improvement in the communication mechanisms between user equipment (UE) and base stations.
Innovation Solution
The method involves obtaining resource unit information for physical uplink channels and using a grant-free radio network temporary identifier (GF-RNTI) for communication, allowing grant-free communication between UE and base stations, which bypasses the need for scheduling and grant mechanisms by determining identifiers based on resource unit information for both uplink and downlink channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scheduling and grant mechanisms are used for uplink transmission, then communication reliability is improved, but signaling resource overhead increases
Solution Approach 1:
The patent extracts the identifier determination function from the base station's scheduling mechanism and places it at the UE level. The UE autonomously determines its identifier based on pre-configured parameters and resource unit information, eliminating the need for base station-generated scheduling grants while maintaining reliable communication through this self-determined identifier.
Solution Approach 2:
The patent applies preliminary action by pre-configuring identifier determination parameters and resource unit information at the UE before actual data transmission. This allows the UE to autonomously determine identifiers without real-time base station intervention, reducing signaling overhead while ensuring communication reliability through pre-planned resource allocation.
2Ease of operation
If scheduling and grant mechanisms are used for uplink transmission, then resource allocation control is improved, but data transmission efficiency deteriorates
Solution Approach 1:
The patent implements self-service by enabling the UE to autonomously determine its identifier and access uplink resources without base station scheduling grants. The UE uses pre-configured parameters and resource unit information to self-manage resource allocation, eliminating scheduling delays and improving data transmission efficiency while maintaining adequate resource control.
3Quantity of substance
If grant-free communication is implemented, then signaling overhead is reduced, but identifier determination complexity increases
Solution Approach 1:
The patent uses parameter changes by deriving identifiers through mathematical transformations of pre-configured parameters and resource unit information. The UE changes the parameter state from raw configuration data to derived identifiers through deterministic algorithms, reducing signaling overhead while managing complexity through standardized parameter transformation processes.
Data Source
AI summary
A method of data communication, comprising: obtaining resource unit information associated with a physical uplink channel; determining an identifier at least in part based on the resource unit information; and using the identifier for transmission of a physical uplink shared channel (PUSCH). Also, a method of data communication, comprising: obtaining resource unit information associated with a physical uplink channel; determining an identifier at least in part based on the resource unit information; and using the identifier for transmission of a physical downlink channel. Also, an apparatus comprising a processor and an RF communication unit, the processor configured to obtain resource unit information associated with a physical uplink channel; determine an identifier at least in part based on the resource unit information; and use the identifier for transmission of a physical uplink shared channel (PUSCH) or a physical downlink channel.