# US 8,570,983 B2 · FDD/TDD wireless link for UNII band > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,983 B2 - Document ID: US8570983B2 - Status: Granted - Kind: B2 - Application number: 11/799,838 - Filed: 2007-05-02 - Published: 2007-11-15 - Granted: 2013-10-29 - Earliest claimed: 2006-05-02 - Assignees: Nextivity, Inc. - Applicants: Behzad Mohebbi - Inventors: Behzad Mohebbi - Web page: https://patentgrep.com/patent/US8570983B2 ## CPC - H04L 27/0002: {analog front ends; means for connecting modulators, demodulators or transceivers to a transmission line (duplex arrangements H04L5/143)} - H04B 7/15542: {Selecting at relay station its transmit and receive resources (selection of wireless resources by user or terminal H04W72/02; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/0003, or by allocating sub-channels H04L5/003)} - H04B 7/2606: {Arrangements for base station coverage control, e.g. by using relays in tunnels} - H04K 3/226: {Selection of non-jammed channel for communication (spectrum sharing arrangements H04W16/14; selection of wireless resources by user or terminal H04W72/02)} - H04K 3/822: {by detecting the presence of a surveillance, interception or detection} - H04L 5/06: the signals being represented by different frequencies (combined with time-division multiplexing H04L5/26) - H04L 5/143: {for modulated signals (H04L5/1469 takes precedence)} - H04K 2203/16: for telephony - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION - H04K: SECRET COMMUNICATION; JAMMING OF COMMUNICATION ## Abstract Systems and methods for full duplex communications on a wireless link between two transceiver devices are disclosed. A first portion of outbound data is transmitted from one transceiver device to the other transceiver device on a first channel, while a first portion of inbound data from the other transceiver device is received on a second channel and the presence of a radiating source other than the inbound data is detected. A second portion of the outbound data is transmitted from the transceiver device to the other transceiver device on the second channel, while a second portion of the inbound data is received from the other of the two transceiver devices on the first channel and the presence of a radiating source other than the inbound data is detected. ## Claims ### Claim 1 A method for full duplex communications on a wireless link between two transceiver devices, the method comprising: transmitting a first portion of outbound data to the other of the two transceiver devices on a first channel, while receiving a first portion of inbound data from the other of the two transceiver devices on a second channel, wherein the first and second channels are within the UNII band of frequencies, and detecting for the presence of a radiating source other than the inbound data on the second channel; and transmitting a second portion of the outbound data to the other of the two transceiver devices on the second channel, while receiving a second portion of the inbound data from the other of the two transceiver devices on the first channel and detecting for the presence of a radiating source other than the inbound data on the first channel. ### Claim 2 (depends on 1) A method in accordance with claim 1, further comprising estimating pathloss while receiving the first portion of inbound data and while receiving the second portion of inbound data. ### Claim 3 (depends on 1) A method in accordance with claim 1, wherein the first channel corresponds to a first set of frequencies in the UNII band of frequencies, and the second channel corresponds to a second set of frequencies in the UNII band of frequencies. ### Claim 4 (depends on 1) A method in accordance with claim 1, further comprising: selecting the first channel; and performing a channel availability check on the selected first channel until an available first channel is determined. ### Claim 5 (depends on 4) A method in accordance with claim 4, further comprising: selecting the second channel; and performing a channel availability check on the selected second channel until an available second channel is determined. ### Claim 6 (depends on 1) A method in accordance with claim 1, further comprising switching from transmitting the first portion of outbound data to the other of the two transceiver devices on the first channel to transmitting the second portion of the outbound data to the other of the two transceiver devices on the second channel. ### Claim 7 A method in accordance with 1, wherein the switching occurs at a predetermined time. ### Claim 8 (depends on 6) A method in accordance with claim 6, further comprising switching from receiving the first portion of inbound data from the other of the two transceiver devices on the second channel to receiving the second portion of the inbound data from the other of the two transceiver devices on the first channel. ### Claim 9 (depends on 8) A method in accordance with claim 8, wherein the switching occurs at the predetermined time. ### Claim 10 In a transceiver device, a method for full duplex communications on a wireless link to another transceiver device, the method comprising: transmitting, with a transmitter, a first portion of outbound data to the other of the two transceiver devices on a first channel and receiving, with a receiver, a first portion of inbound data from the other of the two transceiver devices on a second channel, wherein the first and second channels are within the UNII band of frequencies, while detecting for the presence of a radiating source other than the inbound data on the second channel; switching the transmitter and receiver to transmit a second portion of the outbound data to the other of the two transceiver devices on the second channel and receive a second portion of the inbound data from the other of the two transceiver devices on the first channel while detecting for the presence of a radiating source other than the inbound data on the first channel. ### Claim 11 (depends on 10) A method in accordance with claim 10, further comprising estimating pathloss while receiving the first portion of inbound data and while receiving the second portion of inbound data. ### Claim 12 (depends on 10) A method in accordance with claim 10, wherein the first channel corresponds to a first set of frequencies in the UNII band of frequencies, and the second channel corresponds to a second set of frequencies in the UNII band of frequencies. ### Claim 13 (depends on 10) A method in accordance with claim 10, further comprising: selecting the first channel; and performing a channel availability check on the selected first channel until an available first channel is determined. ### Claim 14 (depends on 13) A method in accordance with claim 13, further comprising: selecting the second channel; and performing a channel availability check on the selected second channel until an available second channel is determined. ### Claim 15 A communication system comprising: a first transceiver device configured for full duplex communications on a wireless link with a second transceiver device, each transceiver device further configured to: transmit a first portion of outbound data to the other of the two transceiver devices on a first channel, while receiving a first portion of inbound data from the other of the two transceiver devices on a second channel, wherein the first and second channels are within the UNII band of frequencies, and detecting for the presence of a radiating source other than the inbound data on the second channel; and transmit a second portion of the outbound data to the other of the two transceiver devices on the second channel, while receiving a second portion of the inbound data from the other of the two transceiver devices on the first channel and detecting for the presence of a radiating source other than the inbound data on the first channel. ### Claim 16 (depends on 15) A communication system in accordance with claim 15, wherein each transceiver further includes a radar detector for detecting for the presence of the radiating source other than the inbound data. ### Claim 17 (depends on 15) A communication system in accordance with claim 15, wherein each transceiver further includes a timer for setting a time to switch between transmitting on the first channel and transmitting on the second channel. ### Claim 18 (depends on 15) A communication system in accordance with claim 15, further comprising a channel selector for selecting the first and second channels.