Uplink Data Packet Resource Allocation in 5G NR User Equipment
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Solution Overview
Problem
The scheduling performance in future communication systems, such as 5G New Radio (NR), is constrained due to the consideration of only Logical Channel Prioritization (LCP) restriction factors, which do not account for the varying delay requirements of different services.
Innovation Solution
A method for allocating uplink data packet resources that includes determining the correspondence relationship between a target object and uplink grants based on LCP restrictions, which include mapping relationships between service types, logical channels, or logical channel groups, and performing resource allocation accordingly, allowing for dynamic, grant-free, or semi-persistent scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only traditional LCP restriction factors (SCS, PUSCH transmission duration, cell) are considered for resource allocation, then the resource allocation process is simple, but scheduling performance is constrained and cannot meet varying delay requirements of different services
Solution Approach 1:
The patent introduces a new parameter dimension (UL grant type) to the existing LCP restriction framework. By mapping different service types and logical channels to specific UL grant types (dynamic scheduling, grant-free scheduling, semi-persistent scheduling), the system expands the parameter space of LCP restrictions without fundamentally changing the existing restriction factors like SCS and PUSCH duration. This parameter expansion enables differentiated scheduling for diverse services while maintaining compatibility with existing LCP mechanisms.
2Adaptability or versatility
If mapping relationship between target object and UL grant type is determined by network device via signaling, then scheduling flexibility is improved, but signaling overhead increases
Solution Approach 1:
The patent implements local quality by allowing different mapping relationships between target objects and UL grant types for different service types and logical channels. Instead of applying a uniform mapping rule system-wide, the network can configure service-specific mappings that match the particular requirements of each service type (eMBB, mMTC, URLLC). This enables fine-grained control over resource allocation while avoiding unnecessary signaling for services with default or standard mappings.
3Productivity
If resource allocation is performed on each UL grant according to correspondence relationship, then data transmission optimization is achieved, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing the mapping relationships between target objects (service types, logical channels) and UL grant types before actual resource allocation occurs. The network device configures these mappings in advance through higher-layer signaling or protocol specifications, so that during runtime, the UE can directly apply the pre-determined mappings without performing complex real-time optimization. This shifts the computational burden from runtime processing to configuration phase, improving real-time scheduling efficiency.
Data Source
AI summary
A method of allocating an uplink data packet resource and a user equipment are provided, and the method includes: receiving at least one UL grant sent by a network device; determining, according to Logical Channel Prioritization LCP restriction corresponding to a target object, correspondence relationship between the target object and the UL grant; and performing resource allocation on each UL grant according to the correspondence relationship between the target object and the UL grant; wherein, the LCP restriction includes at least mapping relationship between the target object and a type of UL grant, and the target object is a service type or a logical channel or a logical channel group.