LTE User Equipment Data Transmission Multiplexing
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Solution Overview
Problem
In LTE and LTE-Advanced systems, the limited use of RB multiplexing due to multiplexing criteria restricts full utilization of bandwidth resources, leading to suboptimal data throughput for user equipment (UE).
Innovation Solution
A method where user equipment (UE) receives scheduling signaling with HARQ process IDs and transmits data on multiple logical channel elements within a single transmission time interval (TTI), allowing simultaneous transmission of data on different logical channels using corresponding HARQ processes, as indicated by configuration messages from the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RB multiplexing is performed according to multiplexing criteria (such as RB priority information and rate requirement), then resource utilization is improved, but bandwidth resources cannot be fully used and data throughput of UE cannot be effectively ensured
Solution Approach 1:
The patent changes the multiplexing parameter from requiring different maximum HARQ transmission quantities to allowing same maximum HARQ transmission quantity. This parameter change enables data on multiple RBs to be multiplexed into a single MAC PDU even when they have the same maximum HARQ transmission quantity, thereby fully utilizing bandwidth resources and improving data throughput without adding complex multiplexing criteria
Solution Approach 2:
The patent makes the HARQ process ID universal across multiple RBs by allowing data from multiple RBs (regardless of their different QoS requirements) to share the same HARQ process ID when multiplexed into a single MAC PDU. This universal approach enables flexible resource allocation and improves bandwidth utilization while maintaining support for different service types
2Productivity
If data on RBs with different maximum quantities of times of HARQ transmission are multiplexed in a same MAC PDU, then resource utilization is improved, but transmission reliability cannot be ensured
Solution Approach 1:
The patent changes the multiplexing parameter from requiring different maximum HARQ transmission quantities to allowing same maximum HARQ transmission quantity. This parameter change enables data on multiple RBs to be multiplexed into a single MAC PDU even when they have the same maximum HARQ transmission quantity, thereby fully utilizing bandwidth resources and improving data throughput without adding complex multiplexing criteria
Solution Approach 2:
The patent uses HARQ feedback mechanism where the UE sends feedback information about the received MAC PDU containing data from multiple RBs. The base station uses this feedback to determine whether retransmission is needed, ensuring that data from different RBs with different QoS requirements can be reliably transmitted while maintaining high resource utilization
Data Source
AI summary
Embodiments of the present invention provide a processing method for data transmission, an apparatus and a system. The method includes: receiving scheduling signaling sent by a base station, where the scheduling signaling includes a hybrid automatic repeat request (HARQ) process ID; and transmitting, within a same transmission time interval TTI, on a process that corresponds to the HARQ process identifier, data on a first logical channel element and data on a second logical channel element. According to the processing method for data transmission, the apparatus, and the system provided in the embodiments of the present invention, utilization of bandwidth resources for data transmission is improved. Therefore, data throughput of UE can be also effectively ensured.