Patent
Method and apparatus for channel quality feedback within a communication system
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TLDR
In this paper, the channel quality request messages are sent to a sub-set of remote stations with data queued to be transmitted to the base station, based on queue status.Abstract:
A base station (101) will request the transmission of quality information from a particular remote stations (102, 103) only when data is queued to be transmitted to the remote stations. Once a remote station begins the transmission of channel quality information, the transmission of such information continues until the data transmission is successfully delivered to the remote station. The base station receives the channel quality information and adjusts the modulation and coding of the remote stations accordingly. Where data is transmitted simultaneously to a plurality of remote stations, a set of queues (303) for the multiple remote stations is maintained, and based on queue status, a channel quality request messages is sent to a sub-set of remote stations with data queued.read more
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References
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Patent
Medium access control for orthogonal frequency-division multiple-access (OFDMA) cellular networks
Hui Liu,Xiaodong Li,Fuqi Mu +2 more
TL;DR: In this article, a method and apparatus for controlling OFDMA cellular networks is described, which comprises receiving channel characteristics and noise-plus-interference information measured at spatially distributed subscribers and assigning traffic channels for an orthogonal frequency division multiple access (OFDMA) network.
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TL;DR: In this article, the pilot signal is used as the control signal, even in the vacant period, and measurement of the link quality of the forward link is performed in the mobile station to report the result of measurement to the base station.
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