Method of idle mode control in OFDM system
AssigneeAlcatel
InventorsYang Wang, Yan Wan
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Abstract
The present invention discloses a method of idle mode control in an orthogonal frequency-division multiplexing (OFDM) system. By superposing idle mode control channels on a frame synchronization pattern in the frame header of an OFDM frame, mobile terminals at a low migration rate will be switched into idle mode during packet service transmission intermission period. The mobile terminals in idle mode needn't do FFT to check whether there is any packet to be received after receiving every frame, thereby the power energy of the mobile terminals is greatly saved.
Claims15
A method of idle mode control in an orthogonal frequency-division multiplexing system, said method comprising:
- a) Access Point (AP) superposing m idle mode control channels on a frame synchronization pattern in the frame header of an orthogonal frequency-division multiplexing (OFDM) frame, m >=1;
- b) the AP transmitting in said idle mode control channels information determining whether a Mobile Terminal (MT) shall enter idle mode or activate mode and sending said frame to a mobile terminal (MT);
- c) the MT receiving said frame and entering idle mode or activate mode in accordance with said information in said idle mode control channels.
Dependencies are inferred from the claim text.