Asymmetrical Multicarrier Transmission with Duplex and Simplex Channels
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Solution Overview
Problem
Current data transmission technologies, such as MIMO and HSPA, face limitations due to asymmetrical data traffic patterns, where downlink traffic often exceeds uplink traffic, leading to underutilization of available frequency bands and increased equipment complexity, cost, and power consumption, especially in wireless communications.
Innovation Solution
The implementation of an asymmetrical multicarrier communication system that supplements a duplex channel with one or more simplex channels to distribute data load, using a scheduler to manage data transmission across multiple channels, ensuring optimal use of available bandwidth and reducing equipment burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO and HSPA technologies are used to increase data transmission capacity, then data transmission rate is improved, but equipment complexity and power consumption increase
Solution Approach 1:
The patent segments the communication channels into multiple carriers with different bandwidth allocations for uplink and downlink directions. Each carrier can be independently configured to match the actual traffic demands, avoiding the need for complex full-duplex symmetric configurations while maintaining high data transmission rates.
Solution Approach 2:
The patent implements asymmetrical carrier configurations where different carriers are allocated different bandwidths for uplink and downlink based on traffic patterns. This asymmetry allows the system to optimize for downlink-heavy traffic without requiring symmetric equipment capabilities, thereby reducing device complexity while maintaining high productivity.
2Adaptability or versatility
If symmetrical duplex channels are used for data transmission, then bidirectional communication capability is improved, but bandwidth utilization efficiency deteriorates under asymmetrical traffic conditions
Solution Approach 1:
The patent employs dynamic carrier selection and bandwidth allocation where the system can adaptively switch between symmetric and asymmetric configurations based on real-time traffic conditions. This dynamic approach maintains bidirectional communication capability while optimizing bandwidth utilization efficiency by allocating more resources to the direction with higher traffic demand.
Solution Approach 2:
The patent changes the bandwidth parameters of different carriers independently, allowing one carrier to be optimized for downlink while another supports uplink. This parameter adjustment enables the system to maintain bidirectional communication capability while significantly improving bandwidth utilization efficiency under asymmetrical traffic conditions.
3Productivity
If multiple frequency carriers are bonded to exceed single carrier capabilities, then data transmission capacity is improved, but equipment cost and complexity increase
Solution Approach 1:
The patent segments the data transmission across multiple frequency carriers, with each carrier handling specific portions of the traffic based on its bandwidth characteristics. This segmentation allows the system to achieve high data transmission capacity by combining carriers asymmetrically, reducing the need for complex equipment that would be required for symmetrical multi-carrier configurations.
Solution Approach 2:
The patent makes the carrier bonding mechanism universal by allowing flexible configuration of each carrier's direction and bandwidth. This multi-functionality enables the same equipment to handle both symmetric and asymmetric traffic patterns, achieving high data transmission capacity without proportionally increasing equipment complexity.
4Quantity of substance
If downlink-only frequency bands are utilized, then bandwidth availability is improved, but transmission flexibility deteriorates
Solution Approach 1:
The patent segments the available frequency bands into different carriers, designating some as downlink-only and others as duplex. This segmentation allows the system to utilize the additional bandwidth from downlink-only bands while maintaining transmission flexibility through the combination of multiple carriers with different capabilities.
Solution Approach 2:
The patent uses duplex carriers as intermediaries to coordinate traffic between the device and network, while downlink-only carriers provide additional bandwidth for downlink traffic. This intermediary approach allows the system to leverage both the bandwidth availability of downlink-only bands and the transmission flexibility of duplex bands simultaneously.
Data Source
AI summary
A duplex frequency is supplemented by providing simplex frequencies and distributing a data load among them. A server initially communicates with a communications device using a duplex channel. A scheduler of the server determines when it is no longer optimal to use the single duplex channel, and distributes data among the duplex channel and the simplex channels. Before sending this data through multiple channels, the server first sends a schedule to the communications device to inform which bits of data are coming through which channels at which times. The scheduler compiles this schedule and sends it to the communications device through the duplex channel. A descheduler within the communications device receives the schedule and alerts the communications device to start receiving data on other simplex channels. The descheduler then puts the bits of data in order as they stream in across the duplex and simplex channels.