1. A method for controlling an uplink power of a terminal at a base station, the method comprising:
at the base station, obtaining a candidate group including schedulable encoding packet sizes and transmission formats each comprising a different transmission power per tone;
at the base station, calculating a path gain between the terminal and a neighboring base station;
estimating at least one interference amount for the neighboring base station based on the calculated path gain and the transmission power per tone of each encoding packet size and transmission format included in the candidate group;
at the base station, determining a target interference amount based on an interference control amount value;
selecting one from the at least one estimated interference amount based on the target interference amount; and
controlling a transmission power of the terminal based on the encoding packet size and transmission format corresponding to the selected estimated interference amount.
2. The method of claim 1, wherein, after the calculating of the path gain, the terminal is allocated with an uplink resource of a suppressed zone and a base station using the uplink resource is selected as the neighboring base station, and a path gain for the selected neighboring base station is calculated.
3. The method of claim 1, wherein the determining of the target interference amount includes:
selecting the interference amount control value based on an average interference amount of each zone where an uplink resource is divided into a plurality of zones; and
determining the target interference amount by applying the selected interference amount control value to an initial target interference amount.
4. The method of claim 3, wherein the initial target interference amount is determined according to a processing load of the base station.
5. The method of claim 4, wherein the processing load of the base station comprises a number of terminals that the base station provides service to.
6. The method of claim 3, wherein in the determining of the target interference amount,
the target interference amount is determined by reducing an initial target interference amount by the interference amount control value when the processing load of the base station increases, and the target interference amount is determined by increasing the initial target interference amount by the interference amount control value when the processing load decreases.
7. The method of claim 1, wherein in the selecting of one from the at least one estimated interference amount,
an interference amount is selected by one closest to the determined target interference amount among interference amounts estimated for the neighboring base station based on the path gain and the transmission power of each encoding packet size and transmission format.
8. The method of claim 7, wherein in the selecting of one from the at least one estimated interference amount,
in case of a plurality of neighboring base stations, a neighboring base station having a largest interference amount is selected from a plurality of interference amounts estimated for the plurality of neighboring base stations, and one interference amount is selected from the interference amounts estimated for the selected neighboring base station.
9. The method of claim 1, wherein in the estimating of the at least one interference amount,
an interference amount is estimated based on
IoT(dB)=ToneTxPwr(dBm)+PG(from BS3,dB)\u2212NoisePwr(dBm),
wherein ToneTxPwr denotes a transmission power per tone corresponding to an encoding packet size and a transmission format in the candidate group, PG denotes a calculated path gain, and NoisePwr denotes a noise power.
10. The method of claim 1, wherein in the calculating of the path gain,
the path gain is calculated between the neighboring base station and a terminal based on information of a preamble provided from the terminal, the terminal receiving a preamble signal from the neighboring base station.
11. The method of claim 10, wherein the preamble signal of a base station comprises a fixed power value.
12. The method of claim 1, wherein in the calculating of the path gain,
a predetermined range of a minimum preamble power and a maximum preamble power is assigned for preamble power of a neighboring base station, and a path gain between the terminal and the neighboring base station is calculated based on a minimum preamble power of the predetermined range.
13. The method of claim 12, wherein the preamble signal of the neighboring base station comprises a variable power value.
14. An apparatus for controlling an uplink power of a terminal at a base station, the apparatus comprising:
a candidate group obtaining unit for obtaining a candidate group comprising schedulable encoding packet sizes and transmission formats each comprising a different transmission power per tone;
a path gain calculation unit for calculating a path gain between the terminal and a neighboring base station;
an interference amount estimation unit for estimating at least one interference amount for the neighboring base station based on the calculated path gain and the transmission power per tone of each encoding packet size and transmission format included in the candidate group;
a target interference amount setup unit for setting up a target interference amount based on an initial target interference amount according to a processing load of the base station and an interference amount control value; and
a transmission power parameter determining unit for selecting one based on the target interference amount from the estimated interference amounts, obtaining an encoding packet size and a transmission format corresponding to the selected interference amount, and providing the obtained encoding packet size and transmission format to the terminal.
15. The apparatus of claim 14, wherein a preamble signal of the neighboring base station comprises a fixed power value, and
a path gain between the terminal and a neighboring base station is calculated based on information related to a preamble transmitted from the terminal by receiving the preamble signal from the neighboring base station.
16. The apparatus of claim 14, wherein a preamble signal of the neighboring base station comprises a variable power value, and
the path gain calculation unit calculates a path gain between the terminal and the neighboring base station using a predetermined range of a minimum preamble power and a maximum preamble power for the preamble power of the neighboring base station.
17. The apparatus of claim 14, wherein the target interference amount setup unit selects an interference amount control value based on an average interference amount obtained per each zone for an uplink resource divided among a plurality of zones, and determines a final target interference amount by applying the selected interference amount control value to a predetermined initial target interference amount according to the processing load of the base station.
18. The apparatus of claim 17, wherein the target interference amount setup unit determines a target interference amount by reducing an initial target interference amount by the interference amount control value when the processing load of the base station increases, and determines the target interference amount by increasing the initial target interference amount by the interference amount control value when the processing load decreases.
19. The apparatus of claim 14, wherein the transmission power parameter determining unit selects a neighboring base station having a largest interference amount from estimated interference amounts, and selects an interference amount having a value closest to the target interference amount among interference amounts estimated for the selected neighboring base station.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A display comprising:
a display panel operable to display visual information from a selected one or more of plural inputs;
plural input connectors, each input connector operable to receive visual information;
an input detection module operable to determine if the input connectors are active or inactive; and
an input selection module interfaced with the input detection module and operable to display active input connectors with a first indicator and inactive input connectors with a second indicator.
2. The display of claim 1 wherein the input selection module is further operable to accept a user selection of an active input connector and prevent a user selection of the inactive input connectors.
3. The display of claim 1 wherein the input selection module is further operable to selectively display all input connectors with the first indicator.
4. The display of claim 1 wherein the first indicator is highlighted and the second indicator is grayed out.
5. The display of claim 1 wherein the active connectors have an interfaced device.
6. The display of claim 5 wherein the active connector interfaced device further has power applied.
7. The display of claim 1 wherein the display panel has a primary display mode and a secondary display mode, the input detection module further operable to determine if connectors are active or inactive by interfacing with the connectors through the secondary display mode.
8. A method for selecting an input source for a display from plural input sources, the method comprising:
polling the input sources to determine active input sources and inactive input sources;
presenting the active input sources at the display with a first indicator;
subduing the presenting of the inactive input sources at the display; and
accepting a user selection of an active input source at the display.
9. The method of claim 8 wherein in subduing the presenting of the inactive input sources further comprises hiding the inactive input sources from display.
10. The method of claim 8 wherein subduing the presenting of the inactive input sources further comprises presenting the inactive input sources at the display with a second indicator.
11. The method of claim 8 further comprising:
selectively presenting the inactive input sources at the display with the first indicator.
12. The method of claim 8 wherein polling further comprises:
detecting a change in ground at a connector to determine that the input source associated with the connector is active.
13. The method of claim 8 wherein polling further comprises:
detecting a video signal at a connector to determine that the input source associated with the connector is active.
14. The method of claim 8 further comprising:
detecting a user request to select an input source; and
activating a PIP mode to perform the polling.
15. The method of claim 8 wherein the input sources comprise one or more of component video, composite video, S-video, digital tuner, analog tuner and DVI.
16. A system for selection of an input source to a display from among plural input sources, the system comprising:
an input detection module interfaced with the input sources and operable to determine the status of each input source as active or inactive; and
an input selection module interfaced with the input detection module, the input selection module operable to present the input sources at the display, the active input sources depicted with a first indicator, the inactive input sources depicted with a second indicator, the input selection module further operable to apply a user selection of one of the active input sources to display visual information from the selected input source at the display.
17. The system of claim 16 wherein active input sources comprise input sources having a signal with visual information.
18. The system of claim 16 wherein active input sources comprise input sources having a ground associated with a connector.
19. The system of claim 16 wherein the input selection module is further operable to selectively depict all input sources with the first indicator.
20. The system of claim 16 wherein the input selection module is further operable to preclude user selection of an inactive input source.