Wireless Device Cooperation Modes for Uu Interface Transmission
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Solution Overview
Problem
Current wireless communication systems lack effective methods for improving transmissions over the Uu interface through cooperation among electronic devices, particularly in scenarios involving relay modes and joint communication modes.
Innovation Solution
The system enables electronic devices to switch between relay mode and joint communication mode, allowing for cooperation among devices. This is achieved by receiving an indicator for cooperation mode, which determines whether to transmit data through relay mode or joint communication mode, involving data splitting and duplication as necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay mode is used for device cooperation, then coverage is improved, but system throughput is limited
Solution Approach 1:
The data transmission is segmented into multiple portions that can be distributed across multiple devices. In joint communication mode, the source device splits data into different portions and transmits them through multiple cooperating devices simultaneously, thereby increasing system throughput while maintaining coverage extension capabilities.
Solution Approach 2:
Multiple devices are merged into a cooperative communication system where they work together to transmit data. The source device combines with multiple cooperating devices to form a unified transmission system that achieves both coverage extension and high throughput by transmitting multiple data portions in parallel.
2Productivity
If joint communication mode is used with multiple devices, then system throughput is improved, but device complexity increases
Solution Approach 1:
The system dynamically switches between relay mode and joint communication mode based on channel conditions, traffic requirements, and device capabilities. This dynamic adaptation allows the system to achieve high throughput when conditions permit while reducing complexity by falling back to simpler relay mode when appropriate, avoiding sustained high complexity operation.
Solution Approach 2:
The system changes operational parameters such as the number of cooperating devices, data portion sizes, and transmission resources allocated to each device based on current system state. This parameter adjustment allows optimization of throughput while managing device complexity by adapting to available resources and channel conditions.
3Reliability
If data is transmitted through multiple cooperating devices, then reliability is improved, but transmission latency increases
Solution Approach 1:
The source device performs preliminary actions by pre-processing and splitting data into multiple portions before transmission. Cooperation agreements are established in advance between the source and cooperating devices, and transmission resources are pre-allocated. This preliminary preparation enables parallel transmission of multiple data portions, improving reliability through redundancy while minimizing additional latency compared to sequential relay transmission.
Data Source
AI summary
Methods and apparatuses are described for cooperation of two or more devices to improve the transmissions over a Uu interface. A source receives or transmits an indicator indicating a first mode of two modes of cooperation between the source apparatus and at least a first cooperating device. The two modes of cooperation includes a joint communication mode and a relay mode of cooperation. If the first mode is the joint communication mode, at least a portion of the data, intended for the intended recipient, is transmitted to at least the first cooperating device to be further transmitted by the first cooperating device to the intended recipient. A same or different portion of the data is transmitted to the intended recipient or to a second cooperating device to be further transmitted by the second cooperating device to the intended recipient.