# US 9,439,099 B2 · Systems and methods for simultaneously using multiple WLAN modules operating in different wireless bands

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- Number: US 9,439,099 B2
- Document ID: US9439099B2
- Status: Granted
- Kind: B2
- Application number: 14/109,847
- Filed: 2013-12-17
- Published: 2015-04-16
- Granted: 2016-09-06
- Earliest claimed: 2013-10-14
- Assignees: Netgear, Inc.
- Applicants: Netgear, Inc.
- Inventors: Joseph Amalan Arul Emmanuel; Peiman Amini; Chia-Wei Liu
- Web page: https://patentgrep.com/patent/US9439099B2

## CPC

- H04B 1/0053: {with common antenna for more than one band}
- H04B 1/0057: {using diplexing or multiplexing filters for selecting the desired band}
- H04L 45/245: {Link aggregation, e.g. trunking}
- H04L 47/34: ensuring sequence integrity, e.g. using sequence numbers
- H04L 67/02: based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L 69/16: Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04W 28/0215: {based on user or device properties, e.g. MTC-capable devices (services for machine-to-machine communication [M2M] or machine type communication [MTC] H04W4/70; wireless resource selection or allocation plan definition based on terminal or device properties H04W72/51)}
- H04W 28/0263: {involving mapping traffic to individual bearers or channels, e.g. traffic flow template [TFT]}
- H04W 28/0967: {Quality of Service [QoS] parameters}
- H04W 72/02: Selection of wireless resources by user or terminal
- H04W 72/04: Wireless resource allocation
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/52: based on load
- H04W 74/002: {Transmission of channel access control information}
- H04B 1/005: {adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges}
- H04W 80/02: Data link layer protocols
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- H04W 88/10: adapted for operation in multiple networks, e.g. multi-mode access points
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Systems and methods for enabling a wireless local area network (WLAN) client to communicate simultaneously over more than one band at a time are described, where each client has at least one radio that is operational in each supported band. Load balancing based on traffic requirements optimizes the use of the multiple bands.

## Claims

### Claim 1

A method comprising:
wirelessly communicating by an access point with a wireless device over a first wireless channel;
simultaneously wirelessly communicating by the client station with the wireless device over a second wireless channel, wherein the first wireless channel is in a first wireless band, the second wireless channel is in a second wireless band, and wherein the first wireless band is distinct from the second wireless band; and
performing link aggregation by the access point to determine a simultaneous use of the first wireless channel and second wireless channel to target a quality of the communications between the access point and the wireless device, wherein the first wireless channel is distinct from the second wireless channel and wherein the first wireless channel and the second wireless channel use the same protocol, wherein the target quality is selected at least from the following criteria: a throughout, a delay, a delay variation, a number of retries when re-transmitting unacknowledged packets, and a quality of service (QoS) requirement.

### Claim 2 (depends on 1)

The method of claim 1, wherein the link aggregation is performed at a layer two level.

### Claim 3 (depends on 1)

The method of claim 1, wherein the link aggregation comprises the use of multipath TCP (transmission control protocol).

### Claim 4 (depends on 1)

The method of claim 1, wherein the link aggregation is performed at an application layer in the network, wherein application layer link aggregation is selected from one of: multi-server HTTP (hypertext transfer protocol), BitTorrent, peer-to-peer aggregation methods, and server-based aggregation methods.