Client Device Relay for WWAN Broadcast Information
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Solution Overview
Problem
In wireless communication networks, client devices face challenges in efficiently decoding and relaying system information across a large number of devices, leading to increased power consumption and potential delays in communication services due to redundant reception of broadcast information.
Innovation Solution
A method and apparatus where a single client device acts as a Primary Client Device (PCD) to decode and relay Wireless Wide Area Network (WWAN) broadcast information over Short Range Wireless Links (SRWL) to other client devices, reducing the need for each device to directly decode this information, thereby optimizing power usage and communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each client device directly decodes WWAN broadcast information, then all devices can independently access network information, but power consumption increases and communication efficiency decreases due to redundant decoding operations
Solution Approach 1:
The patent introduces a relay device (another client device) as an intermediary between the WWAN network and secondary client devices. The relay device receives broadcast information directly from the network and forwards it to other devices via SRWL, eliminating the need for each device to independently decode WWAN broadcasts and reducing overall power consumption.
Solution Approach 2:
The relay device creates a copy of the WWAN broadcast information and redistributes it to secondary client devices through Short Range Wireless Links. This copying mechanism allows multiple devices to access the same information without each device needing to perform the energy-intensive decoding process independently.
2Reliability
If each client device directly decodes WWAN broadcast information, then devices can independently receive broadcast information, but communication delays occur due to redundant reception and processing
Solution Approach 1:
The relay device acts as a mediator that receives broadcast information once from the WWAN network and immediately forwards it to secondary client devices through SRWL. This intermediary approach eliminates the time each device would spend independently decoding broadcasts, reducing overall communication delay.
Solution Approach 2:
The relay device performs the decoding action preliminarily before other devices need the information. By decoding the broadcast information first and then distributing it via SRWL, the system ensures that secondary devices receive the information faster than if they had to decode it themselves after missing the direct WWAN transmission.
3Use of energy by moving object
If a single client device relays broadcast information to all other devices via SRWL, then power consumption is reduced for secondary devices, but the system requires establishment and management of device-to-device communication links
Solution Approach 1:
The patent designates a specific client device as a relay intermediary that handles all WWAN broadcast reception and distribution. This centralized intermediary approach reduces overall system complexity compared to each device managing its own direct WWAN connection, while significantly reducing power consumption for secondary devices.
Solution Approach 2:
The relay device performs multiple functions: receiving WWAN broadcasts, decoding the information, managing SRWL connections with secondary devices, and forwarding information. This multi-functionality consolidates complexity into a single device rather than requiring each device to have full WWAN decoding capabilities.
Data Source
AI summary
As the variety and number of wireless client devices have increased, often there may be multiple client devices in close proximity of each other. In addition to the connectivity to the wireless wide area network (WWAN), the client devices may have short range link to directly connect with each other. Two or more client devices in a given area may be camped on the same cell of the same WWAN, and the client devices may be decoding the same broadcast information. A method and apparatus are disclosed such that a client device may decode the broadcast information from the WWAN and relay the WWAN broadcast information to other client devices over the short range link. This may enable other client devices to avoid having to decode the broadcast information directly from the WWAN which may reduce their power consumption and at times it may help the client devices for faster WWAN connection setup.