Opinion ID: 4458371
Heading Depth: 3
Heading Rank: 1

Heading: A subscriber unit comprising:

Text: a cellular transceiver configured to communicate with a cellular wireless network via a plurality of assigned physical channels; an IEEE 802.11 transceiver configured to com- municate with an IEEE 802.11 wireless local area network; and a processor configured to maintain a communica- tion session with the cellular wireless network in an absence of the plurality of assigned physical channels while the IEEE 802.11 transceiver com- municates packet data with the IEEE 802.11 wire- less local area network. 4 IN RE: IPR LICENSING, INC. ... 8. The subscriber unit of claim 1, wherein the cel- lular wireless network is a code division multiple access (CDMA) wireless network, and the cellular transceiver is a cellular code division multiple access (CDMA) transceiver. Id. at col. 11, ll. 6–16, 39–42. Two limitations recited in claim 8 are relevant to this appeal. First, claim 8 requires the subscriber unit to “maintain a communication session with the cellular wireless network in an absence of the plurality of assigned physical channels.” Id. The Board construed this phrase to mean “maintain a logical connection with the cellular wireless network when none of the plurality of physical channels are in use by the subscriber unit.” That construction was not disputed in the previous appeal. IPR Licensing, 685 F. App’x at 936 n.1. A logical connection means the device stores information about the cellular network even while the device is sending data over a wireless local area network. This allows the device to quickly re-establish an end-to-end connection over the cellular network if necessary. Claim 8 also requires the subscriber unit to communicate with a CDMA cellular wireless network via a CDMA transceiver.