# US 8,542,613 B2 · High-throughput channel operation in a mesh wireless local area network

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- Number: US 8,542,613 B2
- Document ID: US8542613B2
- Status: Granted
- Kind: B2
- Application number: 11/740,018
- Filed: 2007-04-25
- Published: 2007-10-25
- Granted: 2013-09-24
- Earliest claimed: 2006-04-25
- Assignees: InterDigital Technology Corporation
- Applicants: Marian Rudolf; Juan Carlos Zuniga; Joseph S. Levy; Sudheer A. Grandhi
- Inventors: Marian Rudolf; Juan Carlos Zuniga; Joseph S. Levy; Sudheer A. Grandhi
- Web page: https://patentgrep.com/patent/US8542613B2

## CPC

- H04L 12/12: Arrangements for remote connection or disconnection of substations or of equipment thereof
- H04L 5/0058: {Allocation criteria}
- H04L 41/0806: for initial configuration or provisioning, e.g. plug-and-play
- H04L 41/082: the condition being updates or upgrades of network functionality
- H04L 41/0843: {based on generic templates}
- H04L 41/0846: {based on copy from other elements}
- H04L 41/0856: {by backing up or archiving configuration information}
- H04L 41/12: Discovery or management of network topologies
- H04L 43/0817: by checking functioning
- H04L 63/10: {for controlling access to devices or network resources}
- H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks
- H04L 41/0213: Standardised network management protocols, e.g. simple network management protocol [SNMP]
- H04W 48/16: Discovering, processing access restriction or access information
- H04W 84/12: WLAN [Wireless Local Area Networks]
- Y02D 30/50: in wire-line communication networks, e.g. low power modes or reduced link rate
- 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)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

High throughput channel operation in a mesh wireless local area network (WLAN) is disclosed. A mesh network comprises a plurality of mesh points and a network management entity (NME). The NME is configured to retrieve capability and configuration data from the mesh points. The NME configures at least one mesh point with respect to IEEE 802.11n channelization and legacy protection mode based on the capability and configuration data.

## Claims

### Claim 1

An access point (AP) comprising:
a wireless receiver configured to receive, from each of a plurality of wireless transmit receive units (WTRUs), configuration information, wherein configuration information received from at least one of the plurality of WTRUs includes information regarding coexistence of a 20 MHz channel and a 40 MHz channel, green field protection information, space time block coding (STBC) information, and legacy signal field (L-SIG) transmission opportunity (TXOP) protection information; and
a wireless transmitter configured to transmit, to at least one of the plurality of WTRUs, instructions for controlling operation of the at least one of the plurality of WTRUs regarding IEEE 802.11n channelization and legacy protection, wherein a content of the instructions for controlling the operation of the at least one of the plurality of WTRUs regarding IEEE 802.11n channelization and legacy protection is based at least on the configuration information from each of the plurality of WTRUs.

### Claim 2 (depends on 1)

The AP of claim 1, wherein the configuration information received from at least one of the plurality of WTRUs further includes information regarding at least one of physical layer spoofing, reduced inter-frame spacing (RIFS) protection and phased coexistence operation (PCO).

### Claim 3 (depends on 1)

The AP of claim 1, wherein the wireless receiver is further configured to wirelessly receive the configuration information from each of the plurality of WTRUs during or after an association process.

### Claim 4 (depends on 1)

The AP of claim 1, wherein the wireless transmitter is further configured to wirelessly transmit a request for configuration information to at least one of the plurality of WTRUs;
and the wireless receiver is further configured to wirelessly receive the configuration information in response to the request.

### Claim 5 (depends on 1)

The AP of claim 1, wherein the wireless receiver is configured to wirelessly receive periodic updates of the configuration information from each of the plurality of WTRUs and the wireless transmitter is further configured to wirelessly transmit periodic updates of the instructions for controlling operation of the at least one of the plurality of WTRUs to the at least one of the plurality of WTRUs.

### Claim 6 (depends on 1)

The AP of claim 1, wherein the wireless transmitter is configured to transmit the instructions for controlling operation of the at least one of the plurality of WTRUs using at least one of a dedicated message exchange, a multicast message, or a simple network management protocol.

### Claim 7 (depends on 1)

The AP of claim 1, wherein the AP is configured to receive a software/driver download comprising extension channel configuration data.

### Claim 8 (depends on 1)

The AP of claim 1, wherein the instructions for controlling the operation of the at least one of the plurality of WTRUs comprises extension channel block command information, and the wireless transmitter is configured to wirelessly transmit the extension channel block command information during an association process.

### Claim 9 (depends on 8)

The AP of claim 8, wherein the wireless transmitter is configured to wirelessly transmit a congestion control message, wherein the congestion control message includes the extension channel block command information.

### Claim 10 (depends on 1)

The AP of claim 1, wherein the configuration information received from at least one of the plurality of WTRUs includes information regarding mechanisms to manage channel management and channel selection methods.

### Claim 11 (depends on 1)

The AP of claim 1, wherein the wireless receiver and the wireless transmitter are configured to operate at a channel bandwidth of 20 MHz or 40 MHz.

### Claim 12

A wireless transmit and receive unit (WTRU) comprising:
a wireless transmitter configured to transmit configuration information, wherein the configuration information includes information regarding coexistence of a 20 MHz channel and a 40 MHz channel, green field protection information, space time block coding (STBC) information, and legacy signal field (L-SIG) transmission opportunity (TXOP) protection information; and
a wireless receiver configured to receive instructions for controlling operation of the WTRU regarding IEEE 802.11n channelization and legacy protection, wherein a content of the instructions for controlling the operation of the WTRU regarding IEEE 802.11n channelization and legacy protection is based at least on the configuration information.

### Claim 13 (depends on 12)

The WTRU of claim 12, wherein the configuration information further includes information regarding at least one of physical layer spoofing, reduced inter-frame spacing (RIFS) protection and phased coexistence operation (PCO).

### Claim 14 (depends on 12)

The WTRU of claim 12, wherein the wireless transmitter is further configured to wirelessly transmit the configuration information during or after an association process.

### Claim 15 (depends on 12)

The WTRU of claim 12, wherein the wireless receiver is further configured to wirelessly receive a request for the configuration information;
and the wireless transmitter is further configured to wirelessly transmit the configuration information in response to the request.

### Claim 16 (depends on 12)

The WTRU of claim 12, wherein the wireless transmitter is configured to wirelessly transmit periodic updates of the configuration information and the wireless receiver is further configured to wirelessly receive periodic updates of the instructions for controlling operation of the WTRU.

### Claim 17 (depends on 12)

The WTRU of claim 12, wherein the wireless receiver is configured to receive the instructions for controlling operation of the WTRU from at least one of a dedicated message exchange, a multicast message, or a simple network management protocol.

### Claim 18 (depends on 12)

The WTRU of claim 12, wherein the instructions for controlling the operation of the WTRU comprises extension channel block command information, and the wireless receiver is configured to wirelessly receive the extension channel block command information during an association process.

### Claim 19 (depends on 18)

The WTRU of claim 18, wherein the wireless receiver is configured to wirelessly receive a congestion control message, wherein the congestion control message includes the extension channel block command information.

### Claim 20 (depends on 12)

The WTRU of claim 12, wherein the configuration information includes information regarding mechanisms to manage channel management and channel selection methods.

### Claim 21 (depends on 12)

The WTRU of claim 12, wherein the wireless transmitter and the wireless receiver are configured to operate at a channel bandwidth of 20 MHz or 40 MHz.