# US 2019/0174277 A1 · Wireless sensor base station with coexistence of multiple homogeneous radios

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- Number: US 2019/0174277 A1
- Document ID: US20190174277A1
- Status: Published application
- Kind: A1
- Application number: 16/256,969
- Filed: 2019-01-24
- Published: 2019-06-06
- Earliest claimed: 2013-06-14
- Assignees: Netgear, Inc.
- Applicants: Netgear, Inc.
- Inventors: Peiman AMINI; Arms YONGYUTH; Steve SKEOCH; Joseph Amalan Arul EMMANUEL
- Web page: https://patentgrep.com/patent/US20190174277A1

## CPC

- H04W 4/38: for collecting sensor information
- H04B 1/44: Transmit/receive switching
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 25/03006: {Arrangements for removing intersymbol interference}
- H04L 49/9005: using dynamic buffer space allocation
- H04W 24/02: Arrangements for optimising operational condition
- H04W 28/26: Resource reservation
- H04W 52/0212: {managed by the network, e.g. network or access point is leader and terminal is follower}
- H04W 52/386: {centralized, e.g. when the radio network controller or equivalent takes part in the power control}
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/1215: {for collaboration of different radio technologies}
- H04W 72/541: using the level of interference
- H04W 72/566: of the information or information source or recipient
- H04W 88/10: adapted for operation in multiple networks, e.g. multi-mode access points
- H04B 1/525: with means for reducing leakage of transmitter signal into the receiver
- H04L 69/28: Timers or timing mechanisms used in protocols
- H04L 69/323: in the physical layer [OSI layer 1]
- H04L 69/324: in the data link layer [OSI layer 2], e.g. HDLC
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H04W 88/12: Access point controller devices
- Y02B 70/30: Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02D 30/70: in wireless communication 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)
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- 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

Techniques are disclosed for reducing interference, in a network device, among multiple radio circuits operating in a same or similar frequency band and in close physical proximity. In some embodiments, a network device includes a first and a second wireless network circuit. The network circuits operate in a same radio frequency band and are collocated. The second network circuit is assigned a higher priority than the first network circuit. The device further includes a coexistence controller coupled to the network circuits via a communication bus and configured to selectively suppress transmitting operations of the first network circuit during receiving operations of the second network circuit. Among other benefits, the embodiments can increase wireless network bandwidth and reduce mobile device power consumption by providing coordination among the radio circuits so that the transmitting and receiving operations are performed in a way that they do not interfere with their respective antennas.

## Claims

### Claim 1

A network device, comprising:
a first and a second wireless network circuits, wherein the second network circuit is assigned a higher priority than the first network circuit; and
a coexistence controller coupled to the network circuits and configured to prioritize communication among one or more wireless sensors, to which the second network circuit is configured to couple, based on a respective power supply status and/or power consumption sensitivity of the one or more wireless sensors.

### Claim 2 (depends on 1)

The network device of claim 1, wherein the first and second wireless network circuits are homogeneous.

### Claim 3 (depends on 1)

The network device of claim 1, further comprising:
a third wireless network circuit heterogeneous to the first and second wireless circuits, wherein the third wireless network circuit is configured to couple to another number of wireless sensors separate from the one or more wireless sensors coupled to the second network circuit;
wherein the coexistence controller is further configured to arbitrate communication priorities across sensors coupled to the second and third wireless network circuits.

### Claim 4 (depends on 3)

The network device of claim 3, wherein the communication priorities across sensors are arbitrated based on a respective power supply status and/or power consumption sensitivity of each wireless sensor.

### Claim 5 (depends on 3)

The network device of claim 3, wherein the first and second wireless network circuits are IEEE 802.11 compliant, and wherein the third wireless network circuit is a circuit other than IEEE 802.11 compliant.

### Claim 6 (depends on 3)

The network device of claim 3, wherein the third wireless network circuit operates a customized protocols or modified versions of standard protocols to communicate with the number of wireless sensors.

### Claim 7 (depends on 3)

The network device of claim 3, wherein the second wireless network circuit operates a protocol that has a related link upkeep standard.

### Claim 8 (depends on 1)

The network device of claim 1, wherein the first wireless network circuit is configured to be coupled to a device that provides an Internet connection.

### Claim 9 (depends on 8)

The network device of claim 8, wherein the device that provides the Internet connection includes a wireless access point that is coupled to an Internet gateway.

### Claim 10 (depends on 1)

The network device of claim 1, wherein the coexistence controller is further configured to selectively suppress transmitting operations of the first network circuit during receiving operations of the second network circuit.

### Claim 11 (depends on 10)

The network device of claim 10, wherein the transmitting operations are selectively suppressed by one or more of: disabling, postponing, attenuating the power level used in, and/or reducing transmission rate of, the transmitting operations.

### Claim 12 (depends on 10)

The network device of claim 10, wherein the coexistence controller is further configured to determine a reservation schedule, based on status signals received from the one or more wireless sensors, in selectively suppressing the transmitting operations.

### Claim 13 (depends on 1)

The network device of claim 1, wherein the second wireless network circuit is equipped with an omnidirectional antenna.

### Claim 14 (depends on 1)

The network device of claim 1, wherein the network device is configured to receive traffic indication maps (TIM) from at least one of the wireless sensors, and wherein the coexistence controller is further configured to arrange traffic scheduling to give priority to a wireless circuit based on the received TIM information.

### Claim 15 (depends on 1)

The network device of claim 1, wherein, for wireless sensors that do not have TIM capacity, when the network device schedules or reserves a target wake time (TWT) for non-TIM-capable clients, the coexistence controller is further configured to protect the scheduled TWT of the non-TIM-capable clients from being preempted by TIM-capable clients.

### Claim 16 (depends on 15)

The network device of claim 15, wherein the coexistence controller is further configured to indicate to the TIM-capable clients a restricted access window (RAW) information, during which no TIM-capable client can occupy its associated wireless network circuit.

### Claim 17 (depends on 1)

The network device of claim 1, wherein the network device is configured to receive a sleep schedule of a wireless sensor.

### Claim 18 (depends on 17)

The network device of claim 17, wherein the sleep schedule is received in a traffic indication map (TIM) included in one or more beacon frames.

### Claim 19 (depends on 1)

The network device of claim 1, wherein, after the network device acquires information about a given wireless sensor waking up, the coexistence controller is configured to give priority to downlink traffic to the given wireless sensor.

### Claim 20 (depends on 1)

The network device of claim 1, wherein, after the network device acquires information about a given wireless sensor starting to transmit data, the coexistence controller is configured to give priority to uplink traffic from given the wireless sensor.