# US 2013/0155938 A1 · Tcp-relay for wireless applications

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- Number: US 2013/0155938 A1
- Document ID: US20130155938A1
- Status: Published application
- Kind: A1
- Application number: 13/328,642
- Filed: 2011-12-16
- Published: 2013-06-20
- Earliest claimed: 2011-12-16
- Assignees: BelAir Networks Inc.
- Inventors: ROLAND SMITH; WAICHI LO; STEPHEN RAYMENT
- Web page: https://patentgrep.com/patent/US20130155938A1

## CPC

- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 1/1848: {Time-out mechanisms}
- H04L 69/163: In-band adaptation of TCP data exchange; In-band control procedures
- H04L 69/164: Adaptation or special uses of UDP protocol
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A system for improving TCP signal reception comprising a TCP-relay component, a wireless component and an antenna (e.g., a smart antenna) coupled to the wireless component. The system being configured to receive a TCP packet with sequence number “N”, send that packet wirelessly (e.g., using 802.11) to a client, receive the client's wireless ACK indicating that the packet was received, and use the client's ACK as the trigger to send a TCP-Acknowledgement of the TCP sequence number “N”.

## Claims

### Claim 1

A method for improving TCP signal reception comprising the steps of:
receiving a TCP packet from a server;
processing the TCP packet;
communicating the TCP packet wirelessly to a client;
receiving a wireless-ACK packet from the client wherein the wireless-ACK packet indicates that the TCP packet was received by the client;
using the wireless-ACK packet to trigger a TCP-ACK packet to acknowledge receipt of the TCP packet; and
communicating the TCP-ACK to the server.

### Claim 2 (depends on 1)

The method of claim 1 wherein the wireless communication is in accordance with IEEE 802.11 standards.

### Claim 3 (depends on 1)

The method of claim 1 further comprising the step of using a smart antenna to improve wireless functionality.

### Claim 4 (depends on 3)

The method of claim 3 wherein the wireless functionality comprises communicating the TCP packet and/or receiving the wireless-Acknowledgement.

### Claim 5 (depends on 3)

The method of claim 3 wherein the smart antenna is a switched antenna and the switched beam is optimized to improve the reception and/or SNR of the wireless-ACK by holding the switched beam at the client after transmission until the ACK is received.

### Claim 6 (depends on 3)

The method of claim 3 wherein the smart antenna is a beam-formed antenna, and the beam-forming is performed to improve the reception and/or SNR of the client's wireless-ACK by holding the beam at the client after transmission until the ACK is received.

### Claim 7

A system for improving TCP signal reception comprising:
a TCP-relay device enabled to receive a TCP packet having a sequence number N from a server, process the TCP packet and communicate a TCP-ACK to the server;
a wired component for enabling communication between the TCP-relay component and a network;
a wireless component enabled to wirelessly communicate the TCP packet to a client, receive a wireless-ACK from the client; and
a smart antenna coupled to the wireless component;
wherein receipt of the wireless-ACK from the client is used to trigger communication of the TCP-ACK to the server.

### Claim 8 (depends on 7)

The system of claim 7 wherein the wireless communication is in accordance with IEEE 802.11 standards.

### Claim 9 (depends on 7)

The system of claim 7 wherein the smart antenna is a switched antenna and the switched beam is optimized to improve the reception and/or SNR of the wireless-ACK.

### Claim 10 (depends on 7)

The system of claim 7 wherein the smart antenna is a beam-formed antenna, and the beam-forming is performed to improve the reception and/or SNR of the client's wireless-ACK.

### Claim 11

A processor-based device having improved TCP signal reception comprising:
a TCP-relay device enabled to receive a TCP packet having a sequence number N from a server, process the TCP packet and communicate a TCP-ACK to the server;
a wired component for enabling communication between the TCP-relay component and a network;
a wireless component enabled to wirelessly communicate the TCP packet to a client, receive a wireless-ACK from the client; and
a smart antenna coupled to the wireless component;
wherein receipt of the wireless-ACK from the client is used to trigger communication of the TCP-ACK to the server.

### Claim 12 (depends on 11)

The processor-based device of claim 11 wherein the wireless communication is in accordance with IEEE 802.11 standards.

### Claim 13 (depends on 11)

The processor-based device of claim 11 wherein the smart antenna is a switched antenna and the switched beam is optimized to improve the reception and/or SNR of the wireless-ACK.

### Claim 14 (depends on 11)

The processor-based device of claim 11 wherein the smart antenna is a beam-formed antenna, and the beam-forming is performed to improve the reception and/or SNR of the client's wireless-ACK.

### Claim 15

A system having improved TCP signal reception comprising:
a processor;
data storage;
a wired connection enabled to receive a TCP packet having a sequence number N from a server, and communicate a TCP-ACK to the server;
a wireless connection enabled to wirelessly communicate the TCP packet to a client and receive a wireless-ACK from the client; and
a smart antenna coupled to the wireless connection;
wherein receipt of the wireless-ACK from the client is used to trigger communication of the TCP-ACK to the server.

### Claim 16 (depends on 15)

The system of claim 15 wherein the system is further enabled to communicate with other processor based systems.

### Claim 17 (depends on 15)

The system of claim 15 wherein the wireless communication is in accordance with IEEE 802.11 standards.

### Claim 18 (depends on 15)

The system of claim 15 wherein the smart antenna is a switched antenna and the switched beam is optimized to improve the reception and/or SNR of the wireless-ACK.

### Claim 19 (depends on 15)

The system of claim 15 wherein the smart antenna is a beam-formed antenna, and the beam-forming is performed to improve the reception and/or SNR of the client's wireless-ACK.