Communication device

• US 10,694,545 B2
• Filed: 11/06/2015
• Issued: 06/23/2020
• Est. Priority Date: 11/06/2015
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Mattsson, Johan, Andersson, Hakan, Biswas, Ashim
• Primary Examiner(s): Elallam, Ahmed
• Application Number:
  US15/773,736
• Publication Number:
  US 20180324860A1
• Time in Patent Office: 1,691 Days
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 74/0816 with collision avoidance

Abstract

Method for transmitting signals on a transmission channel (103), comprising the steps of detecting (S101) a channel occupancy of a transmission channel (103) by processing data from a receiving path (105) after an activation of a transmission path (111); and deactivating (S102) the transmission path (111) on the basis of the detected channel occupancy.

Claims

1. A method for transmitting signals on a transmission channel, comprising:

detecting a channel occupancy of a transmission channel by processing data from a receiving path after an activation of a transmission path, wherein the channel occupancy is detected based on the received power on the transmission channel in a sequence of time windows, and wherein the received power is evaluated on an average power or a peak power within the sequence of time windows; and

deactivating the transmission path based on the detected channel occupancy.

2. The method of claim 1, wherein the length of the time window is shorter than a delay in the receiving path.

3. The method of claim 1, wherein the time window is adjustable.

4. The method of claim 3, wherein a length of the time window is adjusted based on the characteristics of the transmission channel.

5. The method of claim 1, wherein the activation of a transmission path comprises an activation of a power amplifier in the transmission path.

6. The method of claim 1, wherein the deactivation of a transmission path comprises a deactivation of a power amplifier in the transmission path.

7. The method of claim 1, wherein the transmission channel comprises:

a channel within an unlicensed band comprising a Wi-Fi channel, a Long-Term Evolution (LTE) channel in an unlicensed spectrum, or an License-Assisted Access via LTE (LAA-LTE) channel;

or

a channel within a licensed band comprising an LTE channel, an UMTS channel or a GSM channel.

8. The method of claim 1, wherein the data is processed within a predetermined time period after the activation of the transmission path.

9. A communication device for transmitting signals on a transmission channel, comprising:

processing circuitry;

memory containing instructions executable by the processing circuitry whereby the communication device is operative to;

detect a channel occupancy of the transmission channel by processing data from a receiving path after an activation of a transmission path, wherein the channel occupancy is detected based on received power on the transmission channel in a sequence of time windows, and wherein the received power is evaluated on an average power or a peak power within the sequence of time windows; and

deactivate the transmission path based on the detected channel occupancy.

10. The communication device of claim 9, wherein the length of the time window is shorter than a delay in the receiving path.

11. The communication device of claim 9, wherein the instructions are such that the communication device is operative to adjust the time window.

12. The communication device of claim 11, wherein the instructions are such that the communication device is operative to adjust a length of the time window based on the characteristics of the transmission channel.

13. The communication device of claim 9, wherein the activation of a transmission path comprises an activation of a power amplifier in the transmission path.

14. The communication device of claim 9, wherein the deactivation of a transmission path comprises a deactivation of a power amplifier in the transmission path.

15. The communication device of claim 9, wherein the communication device is a user equipment, a base station, or machine-type communication device.

16. The communication device of claim 9, wherein the instructions are such that the communication device is operative to process the data within a predetermined time period after the activation of the transmission path.

17. A non-transitory computer readable recording medium storing a computer program product for controlling communication device for transmitting signals on a transmission channel, the computer program product comprising software instructions which, when run on processing circuitry of the communication device, causes the communication device to:

detect a channel occupancy of a transmission channel by processing data from a receiving path after an activation of a transmission path, wherein the channel occupancy is detected based on the received power on the transmission channel in a sequence of time windows, and wherein the received power is evaluated on an average power or a peak power within the sequence of time windows; and

deactivate the transmission path based on the detected channel occupancy.