Abstract: A method in a network node (103, 104, 111) for handling a request for an application to access a Wireless Local Area Network, WLAN (101), which application is run by a wireless device (114) and which application communicates in a cellular communications network (100). The network node (103, 104, 111) obtains traffic pattern information relating to the application, which traffic pattern information is derived from a deep packet inspection functionality of the cellular communications network (100). The network node (103, 104, 111) also obtains a decision whether to admit or refuse the request for the application to access the WLAN (101), which decision is based on the obtained traffic pattern information.

Abstract: Handling of performance monitoring in a wireless communications system (100) comprising a transport network (150) relating to infrastructure for data transport in the wireless communications system (100). A management system (160) monitors (302, 401) one or more KPIs and detects (308, 402) that the monitored KPIs indicate a key performance degradation. Network elements (151-156) associated with the transport network (150), and those at least potentially are involved in causing the key performance degradation, are identified. The management system (160) sends one or more requests to the identified network elements (151-156). The one or more requests request the identified network elements (151-156) to perform performance measurements and report results thereof to the management system (160). The performance measurements comprise measurements regarding the transport network (150).

Abstract: A method in a network node (103, 104, 111) for handling a request for an application to access a Wireless Local Area Network, WLAN (101), which application is run by a wireless device (114) and which application communicates in a cellular communications network (100). The net-work node (103, 104, 111) obtains traffic pattern information relating to the application, which traffic pattern information is derived from a deep packet inspection functionality of the cellular communications network (100). The network node (103, 104, 111) also obtains a decision whether to admit or refuse the request for the application to access the WLAN (101), which decision is based on the obtained traffic pattern data rate information.

Abstract: A method and apparatus enabling performance monitoring in packet-switched IP networks such as those configured according to an IP multimedia subsystem, IMS, architecture. Performance is monitored by reconstructing selected control signaling sequences. The control signaling sequences, which are typically executed according a signaling protocol such as the Session Initiation Protocol, SIP, are reconstructed by parsing the contents of monitoring request headers configured, modified, and attached to control messages according to the present invention. The header includes at least an IMS monitoring ID field (510) for identifying the signaling sequence to be reconstructed, a processing node ID field (520) for representing the entities processing the messages, and a requester ID field (530) for identifying a requesting entity. It may also specify a monitoring level (540) indicative of the monitoring tasks required. The monitoring may be requested by an IMS node, or by an entity outside the IMS.

Abstract: A technique for controlling data transmission over a connection employing congestion control is provided. The technique comprises two basic aspects: Detecting a decrease of Round Trip Time in respect of the connection, wherein the detection is facilitated by comparing a short-term Round Trip Time average with a long-term Round Trip Time average (302); and, in response to a result of the detection, adjusting the congestion control so as to increase the data transmission rate (304). Particularly, adjusting the congestion control includes enabling a data transmission rate that is (even) higher than what would have been allowed by any conventional, congestion control. In effect, the present technique may ‘push’ the conventional congestion control when it is not increasing the data transmission rate fast enough.

Abstract: A method of handling performance data comprising a set of events is described. An event record for each event is stored as a set of blocks, each block containing one or more attributes of the event. The storage space occupied by each event record in is then reduced in discrete steps, each step including a reduction process that reduces the size of one of the set of blocks. This enables the provision of intermediate records between events and counters so that new event records contain complete details of their event, older event records contain less information, and even older event records may contain only high-level (counter) information.

Abstract: Methods of processing record data are presented, together with a Central Management Node for processing record data, and Management Subsystem DataBases for providing a record data set and matching record data. Triggered by service related network fault event, a key table comprising at least one key type is determined, based on a focus target record and related to the network fault event is determined, which key table is used in the step matching the at least one key with record data sets in determined Management Subsystem DataBases. Matched results are merged, whereafter a service performance indicator may be determined, based on which a multi-layer water flow analysis of subsystem specific performance related indicators can be obtained. This analysis may be successfully used to reveal the location of the service related network fault.

Abstract: A system and method of handling poll-based alarms. The method begins by detecting a high-priority problem in a network. Next, network elements in the network related to the high-priority problem are mapped. The mapping step includes grouping network elements into focus groups wherein each focus group includes network elements having the same alarm. The mapped network elements are then polled for alarms. The polled alarms of the network elements are then correlated and processed.

Abstract: A method of reducing buffer overflow in a cellular radio network caused by a transfer of data from a buffer in a first cell to a buffer in a second cell when a handover of mobile equipment from said first cell to said second cell occurs. The method comprises temporarily increasing an amount of temporary buffer space required to handle data transferred from the buffer of the first cell to the buffer of the second cell. In one embodiment of the method, prior to increasing the amount of temporary buffer space, the amount of temporary buffer space required is calculated.

Abstract: A method of handling performance data comprising a set of events is described. An event record for each event is stored as a set of blocks, each block containing one or more attributes of the event. The storage space occupied by each event record in is then reduced in discrete steps, each step including a reduction process that reduces the size of one of the set of blocks. This enables the provision of intermediate records between events and counters so that new event records contain complete details of their event, older event records contain less information, and even older event records may contain only high-level (counter) information.

Abstract: A technique for controlling data transmission over a connection employing congestion control is provided. The technique comprises two basic aspects: Detecting a decrease of Round Trip Time in respect of the connection, wherein the detection is facilitated by comparing a short-term Round Trip Time average with a long-term Round Trip Time average (302); and, in response to a result of the detection, adjusting the congestion control so as to increase the data transmission rate (304). Particularly, adjusting the congestion control includes enabling a data transmission rate that is (even) higher than what would have been allowed by any conventional, congestion control. In effect, the present technique may ‘push’ the conventional congestion control when it is not increasing the data transmission rate fast enough.

Abstract: A method and apparatus enabling performance monitoring in packet-switched IP networks such as those configured according to an IP multimedia subsystem, IMS, architecture. Performance is monitored by reconstructing selected control signaling sequences. The control signaling sequences, which are typically executed according a signaling protocol such as the Session Initiation Protocol, SIP, are reconstructed by parsing the contents of monitoring request headers configured, modified, and attached to control messages according to the present invention. The header includes at least an IMS monitoring ID field (510) for identifying the signaling sequence to be reconstructed, a processing node ID field (520) for representing the entities processing the messages, and a requester ID field (530) for identifying a requesting entity. It may also specify a monitoring level (540) indicative of the monitoring tasks required. The monitoring may be requested by an IMS node, or by an entity outside the IMS.

Abstract: Methods of processing record data are presented, together with a Central Management Node for processing record data, and Management Subsystem DataBases for providing a record data set and matching record data. Triggered by service related network fault event, a key table comprising at least one key type is determined, based on a focus target record and related to the network fault event is determined, which key table is used in the step matching the at least one key with record data sets in determined Management Subsystem Databases. Matched results are merged, whereafter a service performance indicator may be determined, based on which a multi-layer water flow analysis of subsystem specific performance related indicators can be obtained. This analysis may be successfully used to reveal the location of the service related network fault.

Abstract: A system and method of handling poll-based alarms. The method begins by detecting a high-priority problem in a network. Next, network elements in the network related to the high-priority problem are mapped. The mapping step includes grouping network elements into focus groups wherein each focus group includes network elements having the same alarm. The mapped network elements are then polled for alarms. The polled alarms of the network elements are then correlated and processed.

Abstract: A method of reducing buffer overflow in a cellular radio network caused by a transfer of data from a buffer in a first cell to a buffer in a second cell when a handover of mobile equipment from said first cell to said second cell occurs. The method comprises temporarily increasing an amount of temporary buffer space required to handle data transferred from the buffer of the first cell to the buffer of the second cell. In one embodiment of the method, prior to increasing the amount of temporary buffer space, the amount of temporary buffer space required is calculated.

Abstract: In a wireless communications network, communication between a source node and a destination node is initiated following detection of a free channel, using a request and acknowledgement exchange. If the exchange fails, a request retry is performed after a randomly determined time period.

Abstract: A system and method of communicating between nodes in an ad hoc polling based communication infrastructure such as a Bluetooth system. Frames on a link between two nodes are designated as checkpoint frames on which each of the two nodes checks for presence of the other. Based upon factors such as attendance or absence of the checkpoint frames and usage of the link, one or the other node can adjust the node checking intensity and the other node follows suit in accordance with predefined rules. The checkpoint frames can either be periodic or pseudo random.