In-band Relay Station Frequency Sharing
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Solution Overview
Problem
Current wireless network relay systems require multiple frequency transitions and complex implementations, increasing operational complexity and reducing efficiency due to separate frequency usage for relay and access links.
Innovation Solution
Implementing an in-band relay scheme where a relay station uses the same frequency for both relay and access links, reducing the number of transitions and sharing a single radio and antenna for both links, allowing for efficient data transmission and reception within the same frame structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate frequencies are used for relay and access links, then frequency separation is achieved, but the number of frequency transitions and operational complexity increase
Solution Approach 1:
The patent merges the frequency resources by allowing the relay station to use the same frequency for both relay links (to base station) and access links (to mobile stations). This consolidation eliminates the need for separate frequency management and reduces the number of frequency transitions required during operation.
Solution Approach 2:
The relay station's radio frequency resources are made universal by enabling a single frequency to serve multiple functions - simultaneously supporting relay communication with the base station and access communication with mobile stations. This multi-functionality reduces operational complexity while maintaining reliable communication paths.
2Reliability
If multiple frequency transitions are implemented, then frequency separation is maintained, but transmission efficiency decreases
Solution Approach 1:
By combining the frequency resources into a single shared frequency for relay and access links, the system eliminates multiple frequency transitions during data transmission. The relay station can maintain communication on the same frequency across different link types, significantly improving transmission efficiency.
3Reliability
If multiple radios and frequencies are used, then communication reliability is improved, but implementation complexity increases
Solution Approach 1:
The patent merges multiple radio frequency resources into a single shared resource at the relay station. Instead of implementing separate radios for relay and access links, the system uses one radio to handle both types of communication on the same frequency, reducing implementation complexity while preserving communication reliability through proper frame structure management.
Solution Approach 2:
The relay station's radio is designed with universal functionality to handle both relay communications (with base station) and access communications (with mobile stations) using the same frequency resource. This multi-functional design simplifies the overall system implementation while maintaining reliable communication paths through the structured frame allocation.
Data Source
AI summary
A method for implementing an in-band relay scheme includes establishing a connection between a base station and a relay station and between the relay station and a mobile station using a frequency. The method also includes receiving data from the base station during a frame via the frequency, the frame comprising a downlink sub-frame, and an uplink sub-frame, wherein the data is received during a beginning portion of the downlink sub-frame. The method further includes transitioning from receive to transmit during the downlink sub-frame. The method additionally includes transmitting data, received from the base station during a previous frame, to the endpoint during a later portion of the downlink sub-frame via the frequency. The method also includes transmitting data received from the endpoint during a previous frame, to the base station during a beginning portion of the uplink sub-frame via the frequency. The method further includes transitioning from transmit to receive during the uplink sub-frame. The method also includes receiving data from the endpoint during a later portion of the uplink sub-frame via the frequency.