—> +
`
`
`Km
`
`
`
`Docket Number:
`
`967P
`
`LI.
`
`3R
`
`lease type a plus sign (+) inside this
`
`lllllllll
`
`00/zr/II0lllllllllllllllllllllllllllll
`
`
`
`
`
`Given Name (first and middle [if any])
`
`Family Name or Surname
`
`Residence (City and either State or Foreign Country)
`
`Shellhammer
`
`Lake Grove, New York
`
`INVENTOR(S)IAPPLICANT(S)
`
`énPROVlSIONAL APPLICATION FOR PA TENT COVER SHEET (Large Entity)
`I-u
`This'Is a request for filing a PROVISIONAL APPLICATION FOR PATENT under 37 CFR 1. 53 (c).
`h]
`
`
`
`
`
`
`K Additional inventors are being named on page 2 attached hereto
`TITLE OF THE INVENTION (280 characters max)
`
`COEXISTENCE TECHNIQUES IN WIRELESS NETWORKS
`
`Sharony
`Biuso
`
`Connolly
`
`Port Washington, New York
`Setauket, New York
`
`StonyBrook, New York
`
`04/
`
`
`
`CORRESPONDENCE ADDRESS
`
`Direct all correspondence to:
`
`
`Place Customer Number
`
`
`D Customer Number ————__——l _
`’
`Bar Code Label here
`
`
`OR
`
`
`
`
`g EgrRIgflaIName SYMBOL TECHNOLOGIES INC.,
`
`
`Address
`One Symbol Plaza
`
`
`Address MS A-6
`
`
`
`Holtsville
`11742
`
`City
`
`
`USA
`631 -738-41 1 0
` Telephone 631 -738-5586
`
`Country
`
`
`
` ENCLOSED APPLICATION PARTS (check all that apply)
`E Specification
`Number ofPages
`17
`
`
`
`D Other (specify)
`g Drawing(s)
`NumberofSheets
`4
` METHOD OF PAYMENT OF FILING FEES FOR THIS PROVISIONAL APPLICATION FOR PATENT (check one)
`
`FILING FEE
`
`
`AMOUNT ($)
`D A check or money order is enclosed tO cover the filing fees
`
`19_5407
`g The Commissioner is hereby authorized to charge filing fees or
`
`
`
`credit any overpayment to Deposit Account Number:
`
`The invention was made by an agency of the United States Government or under a contract with an agency of the United States Government
`
`
`
`1
`
`
`
`$150-00
`
`‘ E No.
`
`
`D Yes, the name of the U 8. Government agency and the Government contract number are.
`
`
`
`Respectfully submitted,
`,
`SIGNATURE
`'
`DATE 7 //27/O O
`
`
`
`
`TYPED or PRINTED NAME Mark Kot‘fsky
`
`REG'STRAT'ON NO'
`(If approprlate)
`
`41,906
`
`TELEPHONE
`
`631-738-5586
`
`USE ONLY FOR FILING A PROVISIONAL APPLICATION FOR PA TENT
`
`SEND T0: Box Provisional Application, Assistant Commissionerfor Patents, Washington, DC 20231
`
`[Pagel of
`
`]
`
`EX. 1007 / Page 1 Of 23 P19LARGE/REVO4
`ERICSSON v. UNILOC
`
`.
`
`
`
`Ex. 1007 / Page 1 of 23
`ERICSSON v. UNILOC
`
`

`

`
`
` Docket Number: '
`
`967P
`
`
`
`PROVISIONAL APPLICATION FOR PA TENT COVER SHEET (Large Entity)
`
`INVENTOR(S)IAPPLICANT(S)
`
`Given Name (first and middle [if any])
`
`Family Name or Surname
`
`Residence (city and either State or Foreign Country)
`
`Rocky Point, New York
`Centereach, New York
`Coram, New York
`Los Altos, California
`
`
`
`
`Certificate of Mailing by Express Mail
`
`I certify that this application and enclosed fee is being
`deposited on
`with the U.S. Postal
`Service "Express Mail Post Office to Addressee" service
`under 37 C.F.R. 1.10 and is addressed to the Assistant
`
`Commissioner for Patents, Washington, D.C. 20231.
`
`
`
`SignatureoérsonMailing Correspondence
`Kain tiW“
`
`
`
`
`Typed or Printed Name ofPerson Mailing Correspondence
`
`gagging are
`
`xpress Mail ” Mailing Label Number
`
`' USE ONLY FOR FILING A PROVISIONAL APPLICATION FOR PA TENT
`
`
`SEND T0: Box Provisional Application, Assistant Commissionerfor Patents, Washington, DC 20231
`
`[Page 2 of 21
`
`Ex. 1007 / Page 2 of 23 PwLAReaREvm
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 2 of 23
`ERICSSON v. UNILOC
`
`

`

`COEXISTENCE TECHNIQUES IN WIRELESS NETWORKS
`
`Attorney Docket 967P
`
`BACKGROUND OF INVENTION
`
`5
`
`,
`
`This invention relates to wireless data communications networks, and in particular
`
`to arrangements for ensuring coexistence between wireless networks that share the same
`
`frequency band with different operating protocols.
`
`
`
`Wireless devices communicate with one another using agreed-upon protocols that
`
`are transmitted in predefined frequency bands. Often, devices using one or more wireless
`
`protocols may operate by transmission within the same frequency band. It is therefore necessary
`
`to develop coordination techniques in order for devices using one or more wireless protocols to
`
`efficiently operate in the same band of frequencies at the same time.
`
`For example, the assignee of the present invention supplies wireless data
`
`communications systems known as the Spectrum 24® System that follows the communications
`
`protocol of IEEE 802.11 Standard (802.11), which is hereby incorporated by reference. In the
`
`system as implemented, mobile units (MUS) are in data communication with a central computer
`
`through access points (APs). The APs communicate with the computer over an Ethernet wired
`
`network. Each of the MUS associates itself with one of the APs. As defined in 802.11, this
`
`communications protocol uses the 2.4 GHz ISM frequency band.
`
`2 0
`
`As currently designed, 802.11 devices may use several predefined methods for
`
`transmission within the 2.4 GHZ band to perform as a wireless local area network. One method
`
`is to use a frequency hopping spread spectrum (FHSS) mechanism wherein data is transmitted
`
`1
`
`Ex. 1007 / Page 3 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 3 of 23
`ERICSSON v. UNILOC
`
`

`

`for a certain period of time in a particular channel and, following a pseudorandom sequence,
`
`continues transmission at a different channel for the same predetermined length of time. As
`
`currently designed, 802.11 devices operate at a frequency hopping rate of 10 hops/second.
`
`Another method is to use a direct sequence spread spectrum (DSSS) mechanism wherein the data
`
`is transmitted in a predetermined frequency channel and is multiplied by a pseudorandom
`
`chipping sequence during transmission.
`
`As all 802.11 devices use the same ISM frequency band, interference among these
`
`
`
`devices is minimized by use of a Carrier Sense Multiple Access / Collision Avoidance
`
`(CSMA/CA) protocol. Under CSMA/CA, an 8021.11 device listens for another's devices
`
`transmission prior to initiating its own transmission. If no other transmission is detected, the
`
`device transmits its information and waits for an acknowledgement from the receiving device. If
`
`no acknowledgement of receipt is received after a pre-determined time interval, the device will
`
`retransmit after waiting for a randomly chosen interval of time. Thus, if two or more devices
`
`began transmitting coincidentally at the same time and the resulting interference blocks all of the
`
`transmissions, each device will wait a random amount of time to attempt a retransmission. This
`
`allows the devices to transmit at different times.
`
`Another example of a wireless specification that also uses the 2.4 GHZ frequency
`
`band is BluetoothTM, which is designed for communication among devices Within a short range
`
`using a lower amount of power. As currently designed, Bluetooth operates using a frequency
`
`20
`
`hopping spread spectrum mechanism at a rate of 1600 hops/second. Bluetooth uses a
`
`master/slave system of communication. One example of a Bluetooth network may be a mobile
`
`Ex. 1007 / Page 4 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 4 of 23
`ERICSSON v. UNILOC
`
`

`

`device attached to the user's belt that communicates with a cordless ring scanner.
`
`In this case,
`
`the mobile device would operate as the master and the cordless ring scanner would operate as the
`
`slave. In this system for data transmission, the master and slave only communicate at predefined
`
`intervals. At the first interval, the master may communicate to a first slave device, which may
`
`only respond during the second interval. At the third interval, a master may communicate to a
`
`second slave device, which may only respond during a fourth interval. By using this system, it is
`
`ensured that only one device within a particular Bluetooth piconet is transmitting at any
`
`particular time. Thus, interference is minimized.
`
`
`
`Additionally, it is desirable for one Bluetooth piconet to operate in close
`
`proximity with another, separate Bluetooth piconet. Because there are 79 different frequency
`
`channels used by Bluetooth, different Bluetooth networks are unlikely to be operating on the
`
`same frequency at the same time. Interference between the separate Bluetooth piconets is thus
`
`minimized. This allows, for example, multiple individuals working in close proximity with one
`
`to each have his or her own mobile unit along with a cordless ring scanner.
`
`Along with the need to operate multiple networks of the same protocol in close
`
`proximity, there is also a recognized need in the art to coordinate the transmissions of devices
`
`operating under different protocols that use the same frequency band. For example, it may be
`
`desirable to use a cordless ring scanner that communicates with belt mounted terminal using the
`
`Bluetooth protocol while the same terminal communicates with an access point using the 802.11
`
`20
`
`protocol. For example, once the user scans a bar code using the cordless ring scanner, the bar
`
`code information may be sent to the belt-mounted terminal. That bar code information then may
`
`Ex. 1007 / Page 5 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 5 of 23
`ERICSSON v. UNILOC
`
`

`

`be transmitted to the 802.11 AP. Then an acknowledgment, and possibly a message, may need
`
`to be sent from the AP back to the belt-mounted terminal. The terminal may also need to
`
`communicate with other Bluetooth enabled peripherals like a printer or a headset. Although
`
`communication protocols such as 802.11 and Bluetooth are designed to ensure that devices using
`
`the same protocol may operate in the same frequency band with a minimum of interference, there
`
`has heretofore been no method of coordination for the use of these wireless devices in the same
`
`frequency operating under different communication protocols.
`
`It is therefore an object of this invention to utilize coordination techniques to
`
`ensure that, for example, both Bluetooth and 802.11 enabled devices, may operate robustly in the
`
`same frequency band at the same time.
`
`Summafl of The Invention
`
`An embodiment of the present invention includes a first radio transceiver
`
`operating in accordance with a first communication protocol (which may be the 802.11 protocol)
`
`and using a frequency band (which may be the 2.4 GHz band), a base station connected to a
`
`wired network and operating in accordance with the first communication protocol, a second
`
`radio transceiver operating in accordance with a second communication protocol (which may be
`
`the Bluetooth protocol) and using the frequency band, and a coordinator associated with the base
`
`
`
`station for, in turn, activating the first radio transceiver, deactivating the first radio transceiver,
`
`20
`
`activating the second radio transceiver, and deactivating the second radio transceiver.
`
`Ex. 1007 / Page 6 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 6 of 23
`ERICSSON v. UNILOC
`
`

`

`BRIEF DESCRIPTION OF THE DRAWINGS
`
`Figure 1 is a block diagram of a Wireless communications system using 802.11
`
`and Bluetooth devices at the same time.
`
`Figure 2 is a schematic diagram of an embodiment of the present invention
`
`illustrating a coordinated timeline between the operation of 802.11 and Bluetooth devices.
`
`Figure 3 is a schematic diagram of an embodiment of the present invention
`
`illustrating another coordinated timeline between the operation of 802.11 and Bluetooth devices.
`
`Figure 4 is a block diagram of a wireless communications system using 802.11
`
`and Bluetooth devices at the same time along with a connect button switch and connected
`
`indicators.
`
`DESCRIPTION OF THE INVENTION
`
`Turing to Figure 1, shown are a plurality of Access Points (APs) 20, 30 that are
`
`physically connected 40, 50 to a wired network 10. Each AP contains apparatus 60, 70 for the
`
`transmission and reception of radio frequency (RF) signals under the 802.11 protocol. Also
`
`using the 802.11 protocol, a plurality of mobile units (MUS) 120, 140 communicate using
`
`apparatus 80, 90 for the transmission and reception of RF signals. Each MU 120, 140 may also
`
`be associated with a Bluetooth Master (BTM) device 130, 150, which together make up a dual
`
`mode devices 100, 110. The association between the MU and BTM may be, for example, by
`
`way of being physically housed in the same unit. An example of a dual mode device 100, 110
`
`5 2
`
`0
`
`EX. 1007 / Page 7 of23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 7 of 23
`ERICSSON v. UNILOC
`
`

`

`may be portable terminal worn on a belt.
`
`Each BTM 130, 150 communicates with a plurality of Bluetooth Slave (BTS)
`
`devices 160, 170, 180, 190, 200, 210 via the Bluetooth protocol. The Bluetooth protocol is
`
`established such that each BTS is uniquely associated with only one BTM. Thus, as illustrated,
`
`BTSlA 160, BTSlB 170, and BTSlC 180 communicate using RF signals 220, 230, 240 only
`
`with BTMl 130. This forms a piconet 280. Correspondingly, BTSZA 190, BTS2B 200, and
`
`BTS2C 210 communicate using RF signals 250, 260, 270 only with BTM2 150. This forms a
`
`piconet 290. An example of a BTS may be a cordless ring scanner, a printer, or personal data
`
`managing device.
`
`With no coordination, there will be times when the BTM 130, 150 and the MU
`
`120, 140 attempt to operate at the exact same time. Since the two devices operate in the same 2.4
`
`GHz ISM frequency band the BTM 130, 150 and the MU 120, 140 may severely interfere with
`
`one another, especially if they are housed in a dual mode device 100, 110. Therefore, there is a
`
`need for coordination between the two devices. One such coordination scheme is primarily
`
`based on time multiplexing of the 802.11 and BT radios, which is especially suitable for a
`
`controlled environment (e.g., the 802.11 and BT radios are housed in the same terminal or dual
`
`mode device). In this embodiment, the Bluetooth systems are enabled or disabled according to a
`
`global/central signal from the 802.11 AP as described herein.
`
`
`
`In a further embodiment, the dual mode devices 100, 110 may be designed such
`
`20
`
`that the 802.11 antennas 80, 90 are of the opposite polarization than the Bluetooth antennas used
`
`to generate RF signals 220, 230, 240, 250, 260, 270. This technique may provide additional
`
`Ex. 1007 / Page 8 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 8 of 23
`ERICSSON v. UNILOC
`
`

`

`protection from 802.11/Bluetooth interference and does not require the need for centralized
`
`control.
`
`In a further embodiment, the BTMs 130, 150 may be designed to transmit at a
`
`relatively low power level such as lower than 0 dBm. This technique may provide additional
`
`protection from 802.11/Bluetooth interference and may be used with other frequency
`
`coordination methods discussed herein.
`
`
`
`In a further embodiment, the 802.11 APs 20, 30 and MUs 120, 140 may be
`
`designed to operate in one portion of the 2.4 GHz spectrum, while the BTMs 130, 150 and BTSs
`
`160, 170, 180, 190, 200, 210 may be designed to operate in another portion of the 2.4 GHz
`
`spectrum.
`
`In a further embodiment, the BTMs 130, 150 may be equipped with a look-ahead
`
`function to determine which frequencies within the 2.4 GHz band will be used for the time for
`
`two or more future Bluetooth frequency hops to occur. If the BTM 130, 150 determines that one
`
`of the next two or more frequency hops will use the same frequency that the 802.11 system is
`
`using, the BTMs 130, 150 will blank their output thus reducing the effect of the interference on
`
`the 802.11 transmissions. By using this method, interference between Bluetooth and 802.11
`
`could be reduced or eliminated at the expense of dropping a couple of packets when channel
`
`overlap occurs. This approach may also be expanded to include the blanking of adjacent
`
`channels that may also interfere with the 802.11 transmissions.
`
`20
`
`Referring now to the schematic of Figure 2 in conjunction with the physical
`
`layout shown in Figure 1, every 802.11 beacon period, T 300, may be divided into three regions:
`
`Ex. 1007 / Page 9 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 9 of 23
`ERICSSON v. UNILOC
`
`

`

`802.11 communications in the power saving (PSP) mode - t802.11PSP 310, Bluetooth
`
`communications — tNAV 320, and 802.11 communications in the active mode CAM — t802.11CAM
`
`330. The numerical values of T, tsmlpsp, tNAV, and tgozincAM depend on traffic characteristics and
`
`application needs (e.g., time critical services). At the beginning of each beacon period 300 an AP
`
`20 sends a beacon B 350 to the 802.11 PSP MU’s 120, 140 that wake up in this period (some
`
`PSP MU’s may wake up in a different beacon). During this period the PSP MU's 120, 140
`
`receive and transmit their packets according to the 802.11 protocol. Once all the PSP MU’s 120,
`
`140 receive their packets, the AP 20, will send a global Clear to Send (CTS) signal 430 to shut
`
`down all the 802.11 communications for a NAV (Network Allocation Vector) period. At this
`
`point the 802.11 MUS 120, 140 will enable the BTMs 130, 150 (which may be housed in the
`
`same dual mode devices 100, 110) so the piconets 280, 290 associated with these BTMs 130, 150
`
`may begin BT communications 360, 370. After completion of the NAV period 320 the BTMs
`
`130, 150 radio are disabled and all BT communications is ceased. The rest of the time (until the
`
`next beacon 380) is dedicated for 802.11 Continuously Aware Mode (CAM) MU’s (not shown)
`
`that operate according to the 802.11 protocol.
`
`In a further embodiment, the tgompsp 310 period may be eliminated if the MUs do
`
`not operate in PSP mode. Here, the CTS signal 340 would trigger only a tNAV 320 and tm11CAM
`
`330 period for every 802.11 beacon period, T 300.
`
`
`
`In a further embodiment, the t80211CAM 330 period may be eliminated if the MUS do
`
`20
`
`not operate in CAM mode. Here, the CTS signal 340 would trigger only a tNAV 320 and tmm,SP
`
`310 period for every 802.11 beacon period, T 300.
`
`Ex. 1007 / Page 10 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 10 of 23
`ERICSSON v. UNILOC
`
`

`

`In a further embodiment, the Bluetooth systems are enabled or disabled according to
`
`a global/central signal from the dual mode devices 100, 110 instead of from an AP 20.
`
`A further embodiment of the present invention may be demonstrated by referring to
`
`the schematic of Figure 3 in conjunction with the physical layout shown in Figure 1. In this
`
`approach there is no need for the 802.11 APs to coordinate between Bluetooth and 802.11
`
`transmission. Instead, the Bluetooth network operates in the ordinary course until a 8021.11 MU
`
`instructs the Bluetooth masters to stop transmitting messages to the Bluetooth slaves. When using
`
`Asynchronous Connectionless (ACS) packets, the Bluetooth master controls access to the medium
`
`for its piconet. Thus, if the masters stops transmitting the slaves stop as well. Once the 802.11 MU
`
`has completed its communication, the Bluetooth masters are allowed to resume communicating
`
`with the Bluetooth slaves. This technique is especially useful when all the 802.11 MUS are in PSP
`
`mode, because these devices are in suspended mode during most of the time.
`
`As shown in Figure 3, when the MU 120 desires to initiate 802.11 communication,
`
`its sends a STOP signal 400 to the BTMs 130, 150. The MU 120 then communicates 450 using the
`
`802.11 protocol with the AP 20. When the MU 120 is finished communicating for the period t80211
`
`470 and is ready to resume its power save mode, the MU 120 communicates a START signal 410
`
`to the BTMs 130, 150. The BTMs 130, 150 may then proceed to communicate 430, 440 using the
`
`BT protocol with their respective BTSs 160, 170, 190, 200 during the period tBT 480. When the
`
`
`
`MU 120 8021.11 terminal “wakes up” to either send data or to listen for a 802.11 beacon from the
`
`20
`
`AP 20, the MU 120 sends a STOP signal 420 to the BTMs 130, 150 to inform then that the MU
`
`120 is taking over access to the medium. The MU 120 may warn the BTMs 120, 150 before it
`
`EX. 1007 / Page 11 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 11 of 23
`ERICSSON v. UNILOC
`
`

`

`needs exclusive use of the medium, and this warning may occur, for example, about 4 usec. before
`
`access is required. This allows the BTMs 130, 150 to complete several packet transfers and then
`
`stop communicating with their respective BTSs 160, 170, 190, 200. Subsequently the MU 120
`
`may communicate 460 with the AP 20 for a new period tm” 490.
`
`In a further embodiment, a BTS 160, 170, 180, 190, 200, 210 may be, for example,
`
`a headset or voice transmission device designed to transmit data to the BTMs 110, 130, which is
`
`then transmitted via the 802.1 1 network. Although voice information is normally transmitted on a
`
`Bluetooth network using the periodic Synchronous Connection Oriented (SCO) protocol, it would
`
`be more efficient when using Bluetooth and 802.11 to transmit voice over the Bluetooth network
`
`using the ACL protocol that is normally reserved for data transmission only. To use voice
`
`transmission over Bluetooth used in conjunction with the frequency coordination techniques
`
`disclosed herein, the Bluetooth piconet 280, 290 would need to compress and decompress the voice
`
`information in order to use the ACL protocol normally reserved for data transmissions.
`
`Another issue that results from attempts to coordinate 802.11 and Bluetooth
`
`devices is ensuring that the lower power Bluetooth devices are actually operating in conjunction
`
`
`
`
`
`with the higher power 802.1 1 devices. In this regard, a further embodiment of the present
`
`invention may be demonstrated by referring to Figure 4. Figure 4 is substantially similar to
`
`Figure l, with the addition of a connect button 500 that is linked to the MUS 120, 140 of the
`
`802.11 network via connectors 510, 520 and lights 530, 540. The connect button 500, may be
`
`20'
`
`physically mounted on a dual mode devices 100, 110. When activated by the user, the connect
`
`button 500 instructs the mobile units 120, 140 to stop transmitting (timeout) for a preset amount
`
`10
`
`EX. 1007 / Page 12 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 12 of 23
`ERICSSON v. UNILOC
`
`

`

`of time. For example, the timeout could last for 10 seconds. This timeout would allow the
`
`Bluetooth piconets 280, 290 to establish operations free from interference from 802.11 devices
`
`for the timeout period. Once established, the piconets 280, 290 may activate lights 530, 540 to
`
`assure the user that the Bluetooth piconets 280, 290 have, in fact, been established. Once the
`
`timeout period ends, other methods for frequency coordination as described herein may be
`
`utilized.
`
`While there have been described what are believed to be the preferred
`
`embodiments of the present invention, those skilled in the art will recognize that other changes
`
`and modifications may be made thereto without departing from the spirit of the present
`
`invention, and it is intended to claim all such changes and modifications as fall within the true
`
`scope of the invention.
`
`
`
`11
`
`Ex. 1007 / Page 13 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 13 of 23
`ERICSSON v. UNILOC
`
`

`

`WE CLAIM: i
`
`1.
`
`Apparatus for frequency coordination, comprising:
`
`a first radio transceiver operating in accordance with a first communication
`
`protocol and using a frequency band,
`
`a base station connected to a wired network and operating in accordance with the
`
`first communication protocol;
`
`a second radio transceiver operating in accordance with a second communication
`
`protocol and using the frequency band;
`
`
`
`a coordinator associated with the base station for, in turn, activating the first radio
`
`transceiver, deactivating the first radio transceiver, activating the second radio transceiver, and
`
`deactivating the second radio transceiver.
`
`2.
`
`3.
`
`IEEE 802.11 protocol.
`
`The apparatus of claim 1, wherein the frequency band is about 2.4 GHZ.
`
`The apparatus of claim 2, wherein the first communication protocol is the
`
`4.
`
`The apparatus of claim 3, wherein the second communication protocol is
`
`the Bluetooth protocol.
`
`5.
`
`The apparatus of claim 4, wherein the first radio transceiver and the
`
`second radio transceiver are mounted together in a housing.
`
`6.
`
`The apparatus of claim 5, wherein the housing is suitable for wearing on a
`
`20
`
`belt.
`
`7.
`
`The apparatus of claim 5, further comprising one or more slave devices
`
`12
`
`EX. 1007 / Page 14 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 14 of 23
`ERICSSON v. UNILOC
`
`

`

`associated with the second transceiver and operating in accordance with the second
`
`communication protocol.
`
`8.
`
`The apparatus of claim 7, wherein at least one of the one or more slave
`
`devices is a scanner capable of being worn on a user‘s finger.
`
`9.
`
`The apparatus of claim 8, wherein the scanner is capable of transmitting
`
`bar code information to the second transceiver.
`
`10.
`
`The apparatus of claim 7, wherein at least one of the one or more slave
`
`devices is a printer.
`
`
`
`11.
`
`The apparatus of claim 7, wherein at least one of the one or more slave
`
`devices is a personal data managing device.
`
`12.
`
`Apparatus for frequency coordination, comprising:
`
`a first radio transceiver operating in accordance with a first communication
`
`protocol and using a frequency band,
`
`a base station connected to a wired network and operating in accordance with the
`
`first communication protocol;
`
`a second radio transceiver operating in accordance with a second communication
`
`protocol and using the frequency band, wherein the first radio transceiver and the second radio
`
`transceiver are mounted together in a housing;
`
`a coordinator associated with the housing. for, in turn, activating the first radio
`
`20
`
`transceiver, deactivating the first radio transceiver, activating the second radio transceiver, and
`
`deactivating the second radio transceiver.
`
`13
`
`Ex. 1007 / Page 15 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 15 of 23
`ERICSSON v. UNILOC
`
`

`

`13.
`
`14.
`
`IEEE 802.11 protocol.
`
`The apparatus of claim 12, wherein the frequency band is about 2.4 GHz.
`
`The apparatus of claim 13, wherein the first communication protocol is the
`
`15.
`
`The apparatus of claim 14, wherein the second communication protocol is
`
`(J1
`
`the Bluetooth protocol.
`
`16.
`
`Apparatus for frequency coordination, comprising:
`
`a first radio transceiver operating in accordance with an IEEE 802.11 protocol and
`
`using a frequency band of about 2.4 GHz and having a first antenna system,
`
`a base station connected to a wired network and operating in accordance with the
`
`IEEE 802.11 protocol;
`
`a second radio transceiver operating in accordance with a Bluetooth protocol and
`
`using the frequency band of about 2.4 GHZ and having a second antenna system;
`
`wherein the first antenna system and the second antenna system are of the
`
`opposite polarization.
`
`17.
`
`Apparatus for frequency coordination, comprising:
`
`a first radio transceiver operating in accordance with an IEEE 802.11 protocol and
`
`
`
`using a frequency band of about 2.4 GHz;
`
`a base station connected to a wired network and operating in accordance with the
`
`IEEE 802.11 protocol;
`
`20
`
`a second radio transceiver operating in accordance with a Bluetooth protocol and
`
`using the frequency band of about 2.4 GHz;
`
`14
`
`Ex. 1007 / Page 16 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 16 of 23
`ERICSSON v. UNILOC
`
`

`

`wherein the Bluetooth protocol transmits at power level of about 0 dBm.
`
`18.
`
`Apparatus for frequency coordination, comprising:
`
`a first radio transceiver operating in accordance with an IEEE 802.1 1 protocol and
`
`using a frequency band of about 2.4 GHz, the frequency band of about 2.4 GHz having two or
`
`more sub—bands;
`
`a base station connected to a wired network and operating in accordance with the
`
`IEEE 802.11 protocol;
`
`a second radio transceiver operating in accordance with a Bluetooth protocol and
`
`using the frequency band of about 2.4 GHZ;
`
`wherein the 802.11 protocol uses one of the two or more sub-bands and the
`
`Bluetooth protocol uses another of the two or more sub-bands.
`
`19.
`
`Apparatus for frequency coordination, comprising:
`
`a first radio transceiver operating in accordance with an IEEE 802.11 protocol and
`
`using a frequency band of about 2.4 GHz, the frequency band of about 2.4 GHZ having two or
`
`more sub-bands;
`
`
`
`a base station connected to a wired network and operating in accordance with the
`
`IEEE 802.11 protocol;
`
`a second radio transceiver operating in accordance with a Bluetooth protocol and
`
`using the frequency band of about 2.4 GHz;
`
`20
`
`wherein the second radio transceiver is equipped with a look-ahead function for
`
`determining whether the two or more sub-bands that will be used by the first radio transceiver
`
`15
`
`EX. 1007 / Page 17 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 17 of 23
`ERICSSON v. UNILOC
`
`

`

`will also be used by the second transceiver.
`
`20.
`
`Apparatus for frequency coordination, comprising:
`
`a first radio transceiver operating in accordance with a first communication
`
`protocol and using a frequency band,
`
`5
`
`a base station connected to a wired network and operating in accordance with the
`
`first communication protocol;
`
`a second radio transceiver operating in accordance with a second communication
`
`protocol and using the frequency band;
`
`a coordinator associated with the first radio transceiver for deactivating the second
`
`radio transceiver while the first radio transceiver is in use.
`
` 1 0
`
`16
`
`Ex. 1007 / Page 18 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 18 of 23
`ERICSSON v. UNILOC
`
`

`

`ABSTRACT
`
`Described are techniques for frequency coordination among two different wireless
`
`network protocols, such as the IEEE 802.11 and Bluetooth protocols, operating in proximity with
`
`one another. Coordination is accomplished by the use of a first radio transceiver operating in
`
`accordance with a first communication protocol (which may be the 802.11 protocol) and using a
`
`frequency band (which may be the 2.4 GHz band), a base station connected to a wired network
`
`and operating in accordance with the first communication protocol, a second radio transceiver
`
`operating in accordance with a second communication protocol (which may be the Bluetooth
`
`protocol) and using the frequency band, and a coordinator associated with the base station for, in
`
`turn, activating the first radio transceiver, deactivating the first radio transceiver, activating the
`
`second radio transceiver, and deactivating the second radio transceiver.
`
`Eg
`
`
`
`17
`
`Ex. 1007 / Page 19 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 19 of 23
`ERICSSON v. UNILOC
`
`

`

`
`
`Ex. 1007 / Page 20 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 20 of 23
`ERICSSON v. UNILOC
`
`

`

`
`
`EX. 1007 / Page 21 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 21 of 23
`ERICSSON v. UNILOC
`
`

`

`
`
`EX. 1007 / Page 22 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 22 of 23
`ERICSSON v. UNILOC
`
`

`

`
`
`Ex. 1007 / Page 23 of 23
`ERICSSON v. UNILOC
`
`Ex. 1007 / Page 23 of 23
`ERICSSON v. UNILOC
`
`