Communication system for maintaining cells in an energy saving state based on access restrictions
AssigneeMitsubishi Electric Corporation
InventorsMitsuru Mochizuki, Noriyuki Fukui, Haruka Suzuki
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Abstract
A communication system capable of preventing unnecessary switching of an energy saving cell between a normal operation state and an energy saving state. An energy saving cell (ES cell) is in a dormant state that is the energy saving state. In this case, when being notified of a wake-up request message from a communication terminal device (UE), the ES cell executes access restriction control to judge whether the UE can access its own cell. If judging that the UE can access its own cell, the ES cell switches on its own cell and shifts from the dormant state to an active state that is the normal operation state.
Claims7
A communication system comprising:
- a communication terminal device;
- and
- a base station device that configures at least one cell capable of radio communication with said communication terminal device,
- wherein
- said at least one cell comprises an energy saving cell switchable between a normal operation state and an energy saving state in which power consumption is lower than in said normal operation state, and
- when said energy saving cell is in said energy saving state, access restriction control is executed to judge whether said communication terminal device is allowed to access said energy saving cell based on access class barring information communicated to the energy saving cell by the communication terminal device via radio resource control (RRC) messaging, the access class barring information being related to the communication terminal device, and when it is judged that said communication terminal device is allowed to access said energy saving cell by said access restriction control, a wake-up process of shifting said energy saving cell from said energy saving state to said normal operation state is performed.
Dependencies are inferred from the claim text.