Method and device of correcting received levels in mobile communication terminal
A method and a device of correcting received levels in a mobile communication terminal are disclosed. According to the method of the invention, channels received at the mobile communication terminal are classified into a channel group on every predetermined number of the channels. And one main channel, at least one neighboring channel being adjacent to the main channel and at least one surrounding channel being adjacent to the neighboring channel are set on every channel group classified. A RSSI detector of the mobile communication terminal measures a received signal strength indicator (RSSI) value for the main channel only among the set channels. The measured value may be stored in a memory and used to correct received levels of the neighboring channel and the surrounding channel. Accordingly, it is possible to correct the channels of which RSSI are not measured with a value close to actual RSSI value.
1. A method of correcting received levels in a mobile communication terminal, comprising:
classifying channels received at the mobile communication terminal into a first channel group comprising a predetermined number of the channels;
setting the channels of the first channel group to include a first main channel, at least one neighboring channel being adjacent to the first main channel, and at least one surrounding channel being adjacent to the neighboring channel;
measuring a first received signal strength indicator (RSSI) value of the first main channel;
if the mobile communication terminal receives a first neighboring channel, applying the first RSSI value as a RSSI value of the first neighboring channel; and
if the mobile communication terminal receives a first surrounding channel, applying a mean value of the first RSSI value and a second RSSI of a second main channel in a second channel group as a RSSI value of the first surrounding channel, the first surrounding channel arranged between the first main channel and the second main channel.
2. The method according to claim 1 , further comprising setting a number of neighboring channels on a first side of the first main channel to be equal to a number of neighboring channels on a second side of the first main channel.
3. The method according to claim 1 , wherein an arrangement order of channels in the first channel group is equal to an arrangement order of channels in the second channel group.
4. A device for correcting received levels in a mobile communication terminal, comprising:
a memory to store information about classifying channels received at the mobile communication terminal into a first channel group and about setting the channels of the first channel group to include a first main channel, at least one neighboring channel being adjacent to the first main channel, and at least one surrounding channel being adjacent to the neighboring channel;
a receiver to receive the channels from a base station;
a RSSI detector to measure a first received signal strength indicator (RSSI) value of the first main channel; and
a controller to apply the first RSSI value of the first main channel as a RSSI value of a first neighboring channel and to apply a mean value of the first RSSI value and a second RSSI value of a second main channel in a second channel group as a RSSI value of a first surrounding channel.
5. The device according to claim 4 , wherein the memory further stores the first RSSI and the second RSSI.