METHOD FOR DETERMINING TRANSMISSION POWER

• US 20150126241A1
• Filed: 11/04/2014
• Published: 05/07/2015
• Est. Priority Date: 11/07/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: HWANG, Daesung, KIM, Ilmin
• Granted Patent: US 9,516,607 B2
• Time in Patent Office: Days
• US Class Current: 455/522
• CPC Class Codes: H04W 52/20 using error rate
• CPC Class Codes: H04W 52/267 taking into account the information rate

Abstract

There is a provided a method for deciding transmission power to securely transmit data, the method comprising: determining a transmission rate toward an intended receiver, based on an upper limit of a decoding error probability of the intended receiver and a lower limit of a decoding error probability of an unwanted over hearer; and deciding a transmission power toward the intended receiver based on the upper limit and the lower limit. Here, if the upper limit is lower than the lower limit, the transmission toward the intended receiver is not performed.

Claims

1. A method for deciding transmission power to securely transmit data, the method comprising:

determining a transmission rate toward an intended receiver, based on an upper limit of a decoding error probability of the intended receiver and a lower limit of a decoding error probability of an unwanted overhearer; and

deciding a transmission power toward the intended receiver based on the upper limit and the lower limit,

wherein if the upper limit is lower than the lower limit, the transmission toward the intended receiver is not performed.

2. The method of claim 1, wherein

if the upper limit is greater than the lower limit, the transmission power is decided based on a water-filling power control scheme.

3. The method of claim 1, wherein

the upper limit of the decoding error probability of the intended receiver is lower than a first threshold value.

4. The method of claim 1, wherein

the lower limit of the decoding error probability of the unwanted over hearer is greater than a second threshold value.

5. The method of claim 1, wherein in the decision step

the transmission power toward the intended receiver is decided in consideration of a minimization of an outage probability of the unwanted over hearer.

6. A wireless apparatus for deciding transmission power to securely transmit data, the wireless apparatus comprising:

a transceiver; and

a processor connected to the transceiver and configured to;

determine a transmission rate toward an intended receiver, based on an upper limit of a decoding error probability of the intended receiver and a lower limit of a decoding error probability of an unwanted over hearer; and

decide a transmission power toward the intended receiver based on the upper limit and the lower limit,

wherein if the upper limit is lower than the lower limit, the transmission toward the intended receiver is not performed.

7. The wireless apparatus of claim 6, wherein

if the upper limit is greater than the lower limit, the transmission power is decided based on a water-filling power control scheme.

8. The wireless apparatus of claim 6, wherein

the upper limit of the decoding error probability of the intended receiver is lower than a first threshold value.

9. The wireless apparatus of claim 6, wherein

the lower limit of the decoding error probability of the unwanted over hearer is greater than a second threshold value.

10. The wireless apparatus of claim 6, wherein in the decision step

the transmission power toward the intended receiver is decided in consideration of a minimization of an outage probability of the unwanted over hearer.