Abstract:
Systems and methods are described for balancing wireless network load between band classes using automatic neighbor relations or another similar protocol. Serving cells may use neighbor lists to determine a number of first neighboring cells associated with band classes, the band classes being defined by signal frequencies. Over one or more periods of time, each of the serving cells may receive network characteristics for second neighboring cells. The neighbor lists may be reconfigured based on the network characteristics, and a number of second neighboring cells in each of the band classes in the reconfigured neighbor lists may be compared with the number of first neighboring cells in each of the band classes to determine a preferred band class for each serving cell or within a cluster of serving cells. Wireless devices may be instructed to initiate wireless connections with cells outside the preferred band class.
Abstract:
In systems and methods of selecting access nodes for broadcast, signal strength metrics are received from a plurality of wireless devices, wherein the signal strength metrics are based on signals received by the plurality of wireless devices from a plurality of access nodes. A first signal strength criteria is determined for each of the wireless devices based on the received signal strength metrics, and wireless devices for which the first signal strength criteria meets a threshold are selected from among the plurality of wireless devices. A second signal strength criteria is determined for each of the plurality of access nodes. A minimum number of the access nodes is selected wherein the second signal strength criteria meets the threshold for each of the selected wireless devices, and a multicast transmission is transmitted from the selected access nodes to the selected wireless devices.
Abstract:
A first throughput value is determined comprising a first total amount of data transmitted in non-final data packets from a sending network element to a wireless device and a second total amount of data in final data packets transmitted to the wireless device during a time period. A second throughput value is determined comprising the first total amount of data transmitted in non-final data packets to the wireless device during the time period less an idle time of a wireless communication link between an access node and the wireless device during the time period and less a total time to deliver the final data packets. A difference of the first throughput value and the second throughput value is calculated, and a traffic management procedure is performed when the difference of the first throughput value and the second throughput value meets a throughput threshold.
Abstract:
Systems and methods of monitoring communications in a communication network are provided. A rate of overhead messages received from a wireless device is monitored and compared to a predetermined threshold. When the rate of the overhead messages received exceeds the predetermined threshold, a type of application operating on the wireless device is identified. A congestion control mechanism mode is determined when the rate of overhead messages received exceeds the predetermined threshold. A variable of a data flow mechanism is modified based on the type of application operating on the wireless device and the congestion mechanism mode.
Abstract:
A database is maintained that maps source cell regions to channel condition on the neighbor cell(s) coverage. The database also tracks whether the neighbor cell has better, weaker, or similar signal strength than the source cell. The channel condition and bitrate requirement of each wireless device being served by the source cell are also tracked. Once a particular neighbor cell has been selected for traffic offload (i.e., handover of one or more wireless devices), the source cell uses the database to select which wireless devices should send measurement reports. Those wireless devices with channel conditions that are mapped in the database to the target cell's coverage are designated for possible selection. Among these wireless devices, either the wireless devices with the highest or lowest bitrate requirements are selected to provide measurement reports for the target cell.
Abstract:
In operation, a plurality of data packets is received from a wireless device in communication with a first network, the data packets comprising an indication of first network congestion. The plurality of data packets are examined to determine an application requirement and a data rate of an application running on the wireless device. When a number of indications of first network congestion in relation to the data rate meets a congestion criteria, which can be based on the application requirement, a handover is performed to hand over the wireless device to a second network.
Abstract:
Systems and methods for operating a wireless communication system are provided. A network node can determine a number of access nodes transmitting data using a first multimedia broadcast multicast services (MBMS) mode. A number of retransmission requests received at each access node transmitting data using the first MBMS mode can be determined. At least one access node can be reconfigured to transmit data from the first MBMS mode to a second MBMS mode based on the number of retransmission requests received from each access node.
Abstract:
Systems and methods for determining a multi-layer tracking area code assignment in a wireless communication network are disclosed. A controller node is configured assign a first code to a first group of access nodes located in a geographic area. A signal load of updates for the first group of access nodes is monitored by the communication network. The controller node determines a set of criteria for assigning a second code to at least one access node in a second group of access nodes. The second group of access nodes are located in the same geographic area as the first group of access nodes. The controller node assigns the second code to the at least one access node for a predetermined period of time.
Abstract:
Maps of high wireless device movement and high wireless device traffic are created. These maps are correlated over selected periods of time to determine when, and where, large numbers of wireless devices are both moving and creating problematic traffic. Stationary wireless devices using an access node in the problem area are identified before the selected time period (e.g., 30 minutes before commuting time). These stationary wireless devices are handed over to a reserved frequency band. During the selected time period, wireless devices requesting access in the problem area are denied access using the reserved frequency band and are instead forced to use another frequency band.
Abstract:
Systems and methods are described for adjusting a sleep schedule of a wireless device in a wireless network. A mobility of a wireless device may be determined to exceed a threshold mobility. The wireless device may be operating in a sleep mode with a discontinuous reception schedule having listening intervals separated by sleep periods. A source access node may request to handover the wireless device to a target access node and may provide information to the target access node regarding the determined mobility and the determined sleep mode before handover completion. The target access node may then initiate wireless communication with the wireless device during a listening interval previously scheduled by the source access node. After the initial communication with the target access node, the wireless device may resume the previously determined sleep mode in order to optimize power use of the wireless device.