# US 2016/0366608 A1 · Apparatus and methods for a dynamic transmission window

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- Number: US 2016/0366608 A1
- Document ID: US20160366608A1
- Status: Published application
- Kind: A1
- Application number: 15/121,616
- Filed: 2015-02-26
- Published: 2016-12-15
- Earliest claimed: 2014-02-28
- Assignees: Lantiq Israel Ltd.
- Applicants: Lantiq Israel Ltd.
- Inventors: Yaron Alpert; Daniel Cohn; Alex Plsareski
- Web page: https://patentgrep.com/patent/US20160366608A1

## CPC

- H04W 28/0231: {based on communication conditions (dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54)}
- H04B 17/318: Received signal strength
- H04L 1/0026: {Transmission of channel quality indication}
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 1/187: {Details of sliding window management}
- H04L 1/1887: {Scheduling and prioritising arrangements}
- H04L 5/006: {Quality of the received signal, e.g. BER, SNR, water filling}
- H04L 47/27: Evaluation or update of window size, e.g. using information derived from acknowledged [ACK] packets
- H04W 28/0236: {radio quality, e.g. interference, losses or delay}
- H04W 28/0242: {Determining whether packet losses are due to overload or to deterioration of radio communication conditions}
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A communication system comprises a transmission controller configured to send transmissions to one or more transceivers; a device performance analyzer configured to receive feedback about the reception of transmissions at said transceivers, and to analyze such feedback to estimate the quality of communication with an existing ATW and to output a quality information; an ATW performance analyzer configured to receive the quality information of the device performance analyzer and to perform further analysis to estimate whether the ATW should be retained as in current operation or modified based on feedback received from said transceivers and to output an estimate information; or ATW feedback analyzer configured to receive feedback about the ATW from said other transceivers, and to estimate based on such feedback whether the ATW should be retained as in current operation or modified based on feedback received from said transceivers; and an ATW estimator configured to receive the estimate information of the ATW performance analyzer, to retain the current ATW unmodified if that is the estimate of the ATW performance analyzer and to communicate such retention to the transmission controller, and to modify the current ATW if that is the estimate information of the ATW performance analyzer and to communicate the modified ATW to a flow controller; wherein said flow controller is configured to receive the modified ATW from the ATW estimator, and to communicate the modified ATW to the transmission controller. The system id adapted to carry out respective methods.

## Claims

### Claim 1

A communication system comprising:
a transmission controller (120) configured to send transmissions to one or more transceivers;
a device performance analyzer (150) configured to receive feedback about the reception of transmissions at said one or more transceivers, and to analyze such feedback to estimate the quality of communication with an existing ATW and to output a quality information;
an ATW performance analyzer (160) configured to receive the quality information of the device performance analyzer (150) and to perform further analysis to estimate whether the ATW should be retained as in current operation or modified based on feedback received from said transceivers and to output an estimate information;
an ATW estimator (170) configured to receive the estimate information of the ATW performance analyzer (160), to retain the current ATW unmodified if that is the estimate of the ATW performance analyzer (160) and to communicate such retention to the transmission controller (120), and to modify the current ATW if that is the estimate information of the ATW performance analyzer (160) and to communicate the modified ATW to a flow controller (180); wherein said flow controller (180) is configured to receive the modified ATW from the ATW estimator (170), and to communicate the modified ATW to the transmission controller (120).

### Claim 2

A system for estimating quality of communication performance with an existing ATW and modifying said existing ATW into a new configuration, comprising:
a transmission controller (120) configured to send transmissions to one or more other transceivers;
an ATW feedback analyzer (210) configured to receive feedback about the ATW from said one or more other transceivers, and to estimate, based on such feedback, whether the ATW should be retained as in current operation or modified based on feedback received from said transceivers;
an ATW estimator (170) configured to receive the estimate of the ATW feedback analyzer (210), to retain the current ATW unmodified if that is the estimate of the ATW feedback analyzer (210) and to communicate such retention to the transmission controller (120), and to modify the current ATW if that is the estimate of the ATW feedback analyzer (210) and to communicate the modified ATW to a flow controller (180);
wherein said flow controller (180) is configured to receive the modified ATW from the ATW estimator (170), and to communicate the modified ATW to the transmission controller (120).

### Claim 3 (depends on 1)

The system of claim 1, wherein the ATW is modified on the basis of data related to a characteristic of the ATW selected from the group including of one or more of: CQI (Channel Quality Indicators), CINR (Carrier to Interferences and Noise Ratio) mean, CINR standard deviation, RSS (Received Signal Strength) mean, RSS standard deviation, timing adjustment and offset frequency adjustment.

### Claim 4 (depends on 1)

The system of claim 1, wherein the ATW is modified on the basis of data related to a characteristic of the ATW selected from the group including one or more of: current transmit power, maximum transmit power, power headroom, internal measurements on equipment associated with the managed entity.

### Claim 5 (depends on 1)

The system of claim 1, wherein the ATW is modified on the basis of data related to a characteristic of the ATW selected from the group including one or more of: number of transmission unit (bit, frame, burst of frames, blocks, and the like) transmitted successfully or failed, for every link, connection, session whether active or standby between the transmitter and other entities at the network

### Claim 6 (depends on 1)

The system of claim 1, wherein the ATW is modified on the basis of data related to a characteristic of the ATW selected from the group including one or more of: channel state information, effective throughput analysis, Quality of Service requirements, and feedback received from one or more entities.

### Claim 7 (depends on 1)

The system of claim 1, wherein the ATW estimation is an e-ATW.

### Claim 8 (depends on 1)

The system of claim 1, wherein the ATW estimation is an m-ATW.

### Claim 9

A method for controlling communication in a communication system, comprising:
receiving feedback about the quality of communication between two transceivers (310);
analyzing said feedback and estimating whether quality of communication would be improved by modifying the ATW (320);
determining that the quality of communication would be enhanced by modifying the ATW (330); and
modifying the ATW on the basis of said determination (340).

### Claim 10 (depends on 9)

The method of claim 9, wherein the steps of analyzing said feedback and estimating whether quality of communication would be improved by modifying the ATW, and determining that the quality of communication would be enhanced by modifying the ATW, are executed by a device performance analyzer and a ATW performance analyzer operating in open-loop mode.

### Claim 11 (depends on 9)

The method of claim 9, further comprising the steps of analyzing said feedback and estimating whether quality of communication would be improved by modifying the ATW, and determining that the quality of communication would be enhanced by modifying the ATW, are executed by an ATW feedback analyzer operating in closed-loop mode.

### Claim 12 (depends on 9)

The method of claim 9, in which the steps of analyzing said feedback and estimating whether quality of communication would be improved by modifying the ATW, and determining that the quality of communication would be enhanced by modifying the ATW, are performed on the basis of data related to a characteristic of the ATW selected from the group including one or more of: CQI (Channel Quality Indicators), CINR (Carrier to Interferences and Noise Ratio) mean, CINR standard deviation, RSS (Received Signal Strength) mean, RSS standard deviation, timing adjustment and offset frequency adjustment.

### Claim 13 (depends on 9)

The method of claim 9, in which the steps of analyzing said feedback and estimating whether quality of communication would be improved by modifying the ATW, and determining that the quality of communication would be enhanced by modifying the ATW, are performed on the basis of data related to a characteristic of the ATW selected from the group including one or more of: current transmit power, maximum transmit power, power headroom, internal measurements on equipment associated with the managed entity.

### Claim 14 (depends on 9)

The method of claim 9, in which the steps of analyzing said feedback and estimating whether quality of communication would be improved by modifying the ATW, and determining that the quality of communication would be enhanced by modifying the ATW, are performed on the basis of data related to a characteristic of the ATW selected from the group including one or more of: number of transmission unit (bit, frame, burst of frames, blocks, and the like) transmitted successfully or failed, for every link, connection, session whether active or standby between the transmitter and other entities at the network.

### Claim 15 (depends on 9)

The method of claim 9, in which the steps of analyzing said feedback and estimating whether quality of communication would be improved by modifying the ATW, and determining that the quality of communication would be enhanced by modifying the ATW, are performed on the basis of data related to a characteristic of the ATW selected from the group including one or more of: channel state information, effective throughput analysis, Quality of Service requirements, and feedback received from one or more entities.