Dynamic PRB Scheduling for Uplink Small Data Efficiency
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Solution Overview
Problem
In existing mobile communications systems, such as LTE, the allocation of physical resource blocks (PRBs) during scheduling request indicator (SRI) scheduling is inefficient, leading to reduced utilization of PRB resources.
Innovation Solution
A method and system for PRB scheduling that dynamically adjusts the reference quantity of bits for scheduling based on uplink transmission blocks, using a network device to allocate PRBs to user equipment (UE) and determine the reference quantity for next-time SRI scheduling, considering buffer status reports and padding bits to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed reference quantity of bits is used for SRI scheduling, then the scheduling process is simple, but PRB resource utilization is reduced
Solution Approach 1:
The patent implements dynamic adjustment of the reference quantity of bits for SRI scheduling based on actual uplink data transmission characteristics. The network device determines the reference quantity by analyzing the quantity of bits actually transmitted in uplink TBs, allowing the scheduling parameters to adapt to varying traffic conditions rather than remaining fixed, thereby improving PRB resource utilization while maintaining manageable complexity through automated adaptation.
Solution Approach 2:
The patent establishes a feedback mechanism where the network device monitors the actual bit quantity transmitted in uplink TBs and uses this information to adjust the reference quantity of bits for subsequent SRI scheduling. This closed-loop feedback allows the system to learn from past transmission patterns and optimize resource allocation dynamically, resolving the contradiction between simple fixed scheduling and efficient resource utilization.
2Reliability
If PRBs are allocated based on maximum capacity, then sufficient resources are guaranteed, but resource waste increases
Solution Approach 1:
The patent changes the scheduling parameter (reference quantity of bits) from a fixed maximum capacity value to a dynamically adjusted value based on actual transmission needs. By monitoring the quantity of bits in uplink TBs and adjusting the reference quantity accordingly, the system allocates PRBs that match actual requirements rather than always allocating maximum capacity, thus reducing resource waste while maintaining sufficient resources through adaptive parameter adjustment.
Solution Approach 2:
Instead of always allocating the full maximum PRB capacity, the patent applies partial allocation based on actual data transmission requirements. The network device determines an appropriate reference quantity that is often less than the maximum capacity, allocating only the necessary portion of resources needed for current uplink traffic, thereby avoiding excessive resource allocation and waste while ensuring sufficient resources are provided when needed.
3Loss of information
If SRI sending period is extended, then signaling overhead is reduced, but response time for uplink data transmission increases
Solution Approach 1:
The patent applies preliminary action by proactively adjusting the reference quantity of bits for SRI scheduling based on observed uplink transmission patterns before the next SRI opportunity arises. By analyzing uplink TB characteristics and pre-calculating appropriate reference quantities, the system prepares optimized scheduling parameters in advance, allowing for more efficient resource allocation when the next SRI occurs, thus reducing both signaling overhead and effective response time.
Data Source
AI summary
Embodiments include a physical resource block scheduling method, network device, and system, which may be used to perform scheduling request indicator SRI scheduling. The method includes: receiving a scheduling request indicator SRI sent by user equipment UE; allocating M PRBs to the UE according to a reference quantity of bits for scheduling; receiving, on a physical uplink shared channel, an uplink transmission block TB that is sent, in response to current-time SRI scheduling, by the UE; and determining, according to the uplink TB, a reference quantity of bits for scheduling for next-time SRI scheduling of the UE.