In a mobile communication method by which a mobile station (UE) transmits a control signal to a radio base station (eNB) in an uplink by using an uplink dedicated resource, different methods for determining whether or not a synchronization state is established in the uplink, are used depending on whether or not the uplink dedicated resource is set up.

Mobile communication method and radio base station

Inspired by swarm intelligence observed in social species, the artificial self-organized networking (SON) systems are expected to exhibit some intelligent features (e.g., flexibility, robustness, decentralized control, and self-evolution, etc.) that may have made social species so successful in the biosphere. Self-organized networks with swarm intelligence as one possible solution have attracted a lot of attention from both academia and industry. In this paper, we survey different aspects of bio-inspired mechanisms and examine various algorithms that have been applied to artificial SON systems. The existing well-known bio-inspired algorithms such as pulse-coupled oscillators (PCO)-based synchronization, ant- and/or bee-inspired cooperation and division of labor, immune systems inspired network security and Ant Colony Optimization (ACO)-based multipath routing have been surveyed and compared. The main contributions of this survey include 1) providing principles and optimization approaches of variant bio-inspired algorithms, 2) surveying and comparing critical SON issues from the perspective of physical-layer, Media Access Control (MAC)-layer and network-layer operations, and 3) discussing advantages, drawbacks, and further design challenges of variant algorithms, and then identifying their new directions and applications. In consideration of the development trends of communications networks (e.g., large-scale, heterogeneity, spectrum scarcity, etc.), some open research issues, including SON designing tradeoffs, Self-X capabilities in the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE)/LTE-Advanced systems, cognitive machine-to-machine (M2M) self-optimization, cross-layer design, resource scheduling, and power control, etc., are also discussed in this survey.

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On Swarm Intelligence Inspired Self-Organized Networking: Its Bionic Mechanisms, Designing Principles and Optimization Approaches

Operating profiles for consumers of computing resources may be automatically determined based on an analysis of actual resource usage measurements and other operating metrics. Measurements may be taken while a consumer, such as a virtual machine instance, uses computing resources, such as those provided by a host. A profile may be dynamically determined based on those measurements. Profiles may be generalized such that groups of consumers with similar usage profiles are associated with a single profile. Assignment decisions may be made based on the profiles, and computing resources may be reallocated or oversubscribed if the profiles indicate that the consumers are unlikely to fully utilize the resources reserved for them. Oversubscribed resources may be monitored, and consumers may be transferred to different resource providers if contention for resources is too high.

Automated profiling of resource usage

A system, method and computer-readable medium for request routing. A DNS server at a content delivery network service provider obtains a DNS query corresponding to a resource requested from a client computing device and associated with a first resource identifier. The first resource identifier includes a first portion with DNS information and a second portion with path information. The DNS server selects a network computing component for processing the requested resource based on the DNS portion of the resource identifier and transmits information identifying the selected network computing component to the client computing device.

Request routing using network computing components

A system, method, and computer readable medium for managing network storage provider and CDN service providers are provided. A content broker component obtains client computing device requests for content provided by a content provider. The content broker processes the client computing device requests and determines whether a subsequent request for the resource should be directed to a network storage provider or a CDN service provider as a function of the updated or processed by the content broker.

Managing content delivery network service providers by a content broker

The present invention relates to a method for providing information in a cellular wireless communication system, comprising the steps of: detecting a radio link failure (RLF) for a mobile station while connected to a first cell; re-establishing the connection in a second cell; and providing information about said radio link failure (RLF) only to cells supporting the same radio access technology (RAT) as said first cell Furthermore, the invention also relates to a method in a mobile station, a method in a base station, a computer program, a computer program product, a mobile station device and a base station device

Method for providing information in a cellular wireless communication system

The invention relates to a method for transmission mode change in a telecommunication network, said network having a public network comprising at least one public base station (NB) covering a public cell and a private network comprising at least one private base station (PBS) covering a private cell, wherein said at least one private base station has limited access rights for User Equipment (UE:s) in the private network, and where said UE:s are able to also communicate with the public network, comprising the step of: performing a private base station transmission mode change when the private base station is in an interference reduction transmission mode to an active transmission mode when an UE with access rights to said private base station is detected in proximity of said private base station, where a detection of said proximity is based on information being specific for said UE and its relation to said private base station. The invention also relates to a telecommunication network.

Method and system for interference reduction through proximity based transmission mode change

Embodiments of the present invention disclose a method for allocating communication resources for communicating data in a terrestrial wireless communication system including a first set of radio transmitters, at least part of said radio transmitters being used by a coordination entity, and the method comprises: sending an inquiry from said coordination entity, requesting a representation of communication resources available for allocation in each of at least a subset of said first set of radio transmitters, said subset being used by said coordination entity; obtaining a response to said inquiry, said response comprising a representation of available communication resources of said subset of radio transmitters; and based on said response, allocating communication resources from said first subset of radio transmitters. Embodiments of the present invention also disclose a communication system and a radio transmitter.

Method for allocating communication resource in a terrestrial wireless communication system

-Intra-frequency handover is an important RRM procedure in LTE and the (self-) optimization of its performance, in terms of handover reliability and handover frequency, has been studied extensively by 3GPP. We present a simulation analysis of the handover performance in an LTE macro deployment, considering the impact and interdependency of key handover settings (offset, TTT, filter coefficient K) for UEs of different speeds. Different parameter combinations giving the same handover failure rate give approximately the same handover frequency; there is scope to reduce the latter by 10 to 20% by selecting the best combination. Failures, occurring mostly in the source cell, may be reduced through careful user plane design.

A Simulation Study of LTE Intra-Frequency Handover Performance

A method for handover problem identification in a mobile telecommunications system, a mobile terminal, a radio base station and a management entity for the mobile telecommunication. The system includes at least a first radio base station, a second radio base station and a mobile terminal able to communicate with the base stations, the mobile terminal is adapted to do a handover from the first base station to the second base station. The method includes the steps of: taking at least one measure of a link quality between the terminal and any of the stations, evaluating any measure of a link quality in regard of the handover problem identification, in the step of taking the at least one measure, take the at least one measure of a link quality at an end of a successful handover execution of the mobile terminal from the first base station to the second base station.

Johan Johansson

Papers

Method for providing information in a cellular wireless communication system

Method and system for interference reduction through proximity based transmission mode change

Method for allocating communication resource in a terrestrial wireless communication system

A Simulation Study of LTE Intra-Frequency Handover Performance

Method for handover problem identification