Abstract: In wireless networks where multiple base stations are deployed, handsets may handoff from one base station to the other while in a voice call. In this disclosure a layer-2 hand-off mechanism for cellular systems designed to operate in unlicensed spectrum is described. More specifically a proposed method that does not use any pre-determined thresholds to initiate the hand-offs is disclosed.

Abstract: In one embodiment, a method includes receiving a device identifier associated with a virtual resource, determining a configuration template identifier based on the device identifier, and selecting a configuration template from a library of configuration templates based on the configuration template identifier. The receiving, determining, and selecting are at a network device. The virtual resource is hosted by a host device. The device identifier is received from the host device.

Abstract: In one embodiment, a method includes receiving a provisioning instruction including a device identifier from an external management entity, receiving the device identifier from a network device, associating the provisioning instruction the network device, and sending a portion of the provisioning instruction to the network device. The device identifier being associated with a virtual resource. The associating is based on the device identifier of the virtual resource and a device identifier of a network device. The portion of the provisioning instruction is sent to the network device based on the associating.

Abstract: An extension to a heterogeneous MAC protocol that makes provisions for multi-frequency system architecture is described. A new frame structure for a multi-frequency xMAX system is introduced. Multi-frequency xMAX system is an extension of a single-channel xMAX system, where the available bandwidth is split into multiple channels to provide additional capacity and range. The new frame structure is followed by all channels and is designed to fulfill the requirements of multiple frequency operation. The new frame structure incorporates features that allow the handset to leverage the advantages of multiple frequency channels, especially in the event of interference. Also, a new mechanism to reduce the power consumption in the handset is discussed that significantly reduces the number of unnecessary receive operations at the handset.

Abstract: This disclosure describes a provisional hand-off mechanism to transfer handsets between base stations for a MAC protocol that combines contention-free and contention-based MAC protocols for use in wireless VoIP systems with multiple base stations that reduces packet overhead thus allowing for transmission of high bit-rate data to multiple users over wired and wireless means.

Abstract: This disclosure describes a new Medium Access Control (MAC) protocol that combines contention-free and contention-based MAC protocols into a heterogeneous MAC protocol used for forwarding VoIP traffic in VoIP systems on wireless networks using multiple base stations which addresses the need to transport high bit-rate data to multiple users over wired and wireless means.

Abstract: In one embodiment, an apparatus can include a filter module operatively coupled to a switching module. The filter module can be configured to define a filter to be applied to a Fibre Channel over Ethernet (FCoE) frame received from any port from multiple ports instantiated at a network device. The filter can be defined based at least in part on a first logical address associated with a first port from the multiple ports. The first logical address can be based at least in part on (1) a first identifier associated with a switch fabric to which the apparatus is operatively coupled and (2) a second identifier associated with a first port from the multiple ports. The filter module can be configured to define the filter such that a switching module sends the FCoE frame to a Fibre Channel device when a second logical address included in the FCoE frame matches the first logical address and the filter module is operatively coupled to the switching module.

Abstract: In some embodiments, an apparatus includes a gateway device configured to be operatively coupled to a Fibre Channel switch by a first data port and a second data port. The gateway device is configured to designate the first data port as a primary data port and the second data port as a secondary data port. The gateway device is configured to associate a set of virtual ports with the first data port and not the second data port when in the first configuration. The gateway device is configured to associate the set of virtual ports with the second data port when in the second configuration. The gateway device moves from the first configuration to the second configuration when an error associated with the first data port is detected.

Abstract: In one embodiment, an apparatus includes a switching policy module configured to define a switching policy associating a Fibre Channel port with a destination Media Access Control (MAC) address. The switching module can be configured to receive a Fibre Channel over Ethernet (FCoE) frame from a network device and send a Fibre Channel frame encapsulated in the FCoE frame to the Fibre Channel port based at least in part on the switching policy and a destination MAC address of the FCoE frame.

Abstract: In one embodiment, an apparatus includes an initialization module configured to receive a Fibre Channel over Ethernet Initialization Protocol (FIP) login request from a network device. The initialization module is configured to select an outbound port based at least in part on a load-balancing calculation. The initialization module is configured to define a destination Media Access Control (MAC) address. The initialization module is configured to associate the destination MAC address with the outbound port. The initialization module is configured to send, to the network device, a signal including the destination MAC address in response to the FIP login request.

Abstract: In one embodiment, an apparatus can include a filter module configured to receive multiple Media Access Control (MAC) addresses associated with multiple virtual ports instantiated at a first network device. Each virtual port from the multiple virtual ports can be associated with a MAC address from the multiple MAC addresses. The filter module can be configured to define a filter to be applied to a data frame sent between the first network device and a network switch, the filter being based at least in part on a MAC address prefix included in each MAC address from the plurality of MAC addresses. The MAC address prefix can include an identifier uniquely associated with a second network device at which the filter module operates.

Abstract: An element-based method to automatically configure mobile handsets by the base station using a protocol that combines contention-free and contention-based MAC protocols for use in wireless VoIP systems with multiple base stations is disclosed.

Abstract: In one embodiment, a method includes receiving on a network side of a data center network a migration notification related to migration of a virtual resource from a source host device to a target host device. The source host device and the target host device can be on a server side of the data center network different than the network side of the data center network. The virtual resource can be logically defined at the source host device. The method can also include defining, before migration of the virtual resource is completed, an identifier representing a mapping of the virtual resource to the target host device in response to the migration notification. The defining can be performed on the network side of the data center network.

Abstract: A mechanism that minimizes the frequency and interval of mobile device scans while not impacting the ability of the devices to seamlessly move across disparate wireless networks is disclosed. More specifically the method involves creating a map of tower/network identifiers and channels of operation between different wireless networks. Using this information a mobile device can schedule its scans on multiple wireless interfaces in an energy-efficient and on-demand manner.

Abstract: In this disclosure a technique of base station assisted mobility detection of handsets is described. More specifically by transmitting the subnet ID in the Beacon, a base station simplifies the process of network detection. This also leads to a significant reduction in handoff latency by giving the handset ample time to prepare for the impending handoff.

Abstract: A scanning technique to select the best channel a mobile handset needs when approaching handoff is described. More specifically a system and method for an adaptive proactive scanning mechanism in which the rate of scanning is determined by the necessity to handoff and battery power is disclosed.

Abstract: A technique for network entry in multi-channel mobile systems is described. The procedure utilizes the channel specific information sent in the beacon of each channel to select a subset of suitable channels. It then proceeds to scan these channels to gather information on perceived interference and received signal strength. Based on collected information the device picks the most suitable channel for joining the network. Since the channels to be scanned are pre-selected based on information seen in the beacon, the overall scan latency is reduced, thereby leading to a faster and more successful network entry.

Abstract: This disclosure describes a new interference avoidance Medium Access Control (MAC) protocol that combines contention-free and contention-based MAC protocols into a heterogeneous MAC protocol used for forwarding VoIP traffic in VoIP systems on wireless networks using multiple base stations which addresses additional interference elimination and the need to transport high bit-rate data to multiple users over wired and wireless means.

Abstract: In one embodiment, a method includes performing, at a host device on a first side of a single-hop link, packet classification associated with hairpin routing of a first data packet between a first virtual resource and a second virtual resource that are logically defined at the host device. The first virtual resource can be different than the second virtual resource. The also includes transmitting a second data packet to a network device on a second side of the single-hop link so that packet classification associated with hairpin routing of the second data packet between at least two virtual resources logically defined at the host device is performed at the network device.

Abstract: A method that addresses a cross layer optimization technique for TCP in which the need to send ACK frames across wireless links is contained by using the information from the MAC layer acknowledgements is disclosed. More specifically the method significantly reduces bandwidth consumption and improves the performance of TCP on wireless networks. Furthermore, since the number of transmitted and received packets is reduced at the mobile device, the battery life of the device can be improved significantly. The proposed method can also be applied to downlink and uplink ACK frames with a slight variation between the two.