Relay Station Guard Time Partial Symbol Allocation
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Solution Overview
Problem
In wireless communication systems employing relay stations, the conventional method of signal transmission results in radio resource wastage and interference due to the need for guard times during switching between reception and transmission modes.
Innovation Solution
A method that allocates radio resources to include partial symbols within guard time symbols, allowing for signal transmission and minimizing interference by utilizing these previously unused resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the relay station uses guard time for switching between reception and transmission modes, then reliable signal transmission is ensured, but radio resources are wasted
Solution Approach 1:
The patent segments the guard time period into two distinct parts: a first guard time portion and a second guard time portion. The first portion is used for receiving signals from the base station, while the second portion is used for transmitting signals to user equipment. This segmentation allows the relay station to utilize what would otherwise be wasted time for actual communication, thereby improving radio resource utilization while maintaining reliable switching between reception and transmission modes.
2Duration of action of moving object
If the relay station transmits signals through the entire subframe, then maximum transmission duration is achieved, but instantaneous maximum power consumption increases
Solution Approach 1:
The patent implements periodic action by dividing the subframe into multiple time periods with different functions. The relay station receives signals during the first guard time portion and transmits signals during the second guard time portion, creating a periodic pattern of reception and transmission. This allows the relay station to achieve maximum transmission duration while managing power consumption through structured time-division multiplexing of operations.
3Adaptability or versatility
If the relay station switches between reception and transmission modes frequently, then multiple user equipment can be served, but guard time requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring the subframe structure with designated first guard time portions and second guard time portions before actual communication occurs. The base station and relay station agree on this time-division structure in advance, allowing the relay station to switch between reception and transmission modes efficiently without requiring additional guard time for each switch. This enables frequent switching to serve multiple user equipment while minimizing guard time accumulation.
Data Source
AI summary
A method for transmitting a signal in a wireless communication system is provided. The method includes: allocating a radio resource for transmitting a signal; and transmitting the signal to a destination station by using the radio resource, wherein the radio resource includes a plurality of symbols in a time domain, at least two symbols among the plurality of symbols include a guard time for switching transmission and reception of a signal, and the radio resource includes a partial symbol which is a radio resource other than the guard time in the symbol including the guard time.