Nokia Siemens Networks S.p.a.

Siemens Information & Communication Networks, Inc.

Nokia Siemens Networks Gmbh & Co Kg

Siemens Mobile Communications S.p.a.

Siemens Aktiengesellschaft

Giulio Cavalli

Claudio Santacesaria

Giovanni Maggi

Annalisa Tomasetta

Gaspare Licitra

External packets entering a transmitting entity of a broadband wireless access system are forwarded to a receiving entity onto MAC layer connections at the wireless interface between such entities in a manner depending on the result of a packet classification performed by using a set of classification rules identified by a rule index and associated with a priority index determining the order of application of different rules to packets relating to a same service. The classification rules include both classification rules specific for data communication protocols and containing one or more protocol-specific parameters to be matched by corresponding fields in a packet being classified, and a pass-through classification rule only containing a priority index and a rule index, but no protocol-specific matching parameter, said pass through classification rule being applied to a packet not having matched a protocol-specific classification rule.

Method for packet classification based on protocol type and on priorities

An air time management method and apparatus for multi-access channel networks is provided, suitable for use when terminal stations operate with adaptive modulation. A specific modulation (default modulation) is defined for each terminal station (in a planning phase. During operation, when bandwidth is to be allotted to an uplink or downlink communication, a base station checks whether the concerned terminal station is operating with a modulation more robust (e.g. less efficient) than the default modulation. In so, the base station allocates a time slot to the communication that has a duration sufficient for transmitting less than all of a particular set of data with the default modulation. If not, the base station allocates a time slot to the communication that has a duration sufficient for transmitting all of a particular set of data with the current modulation.

Method of and device for air time management in multi-access channel networks

To perform a network entry of a terminal to a wireless network including a base station, wherein the terminal has a maximum power capability, at least one attempt is performed by the terminal to establish communication with the base station with a power level within a terminal admitted power range. The terminal admitted power range extends up to the maximum power capability of the terminal. In the absence of a response from the base station, one or more repeated attempts are performed with power levels gradually increased over the initial power level within a terminal admitted power range. The admitted power range extends up to the maximum power capability of the terminal.

Mobile terminal entry based on power control within maximum admitted power range

In radio transmission systems with point-to-point and point-to-multipoint topology a master station and one or several terminal stations are defined as well as a downstream channel from the master station to the terminal stations and an upstream channel from the terminal stations to the master station. In such systems, in order to send traffic to several terminal stations, the downstream channel is used by the master station in time division multiplexing. In some cases, the modulation type and the forward error correction, jointly called phy mode, depend on the addressed terminal. These systems are called adaptive phy mode systems. The present invention relates to adaptive phy mode systems, and it defines a power control technique for the terminal stations that also commands the phy mode switching and optimizes the system in terms of coverage, capacity and interference. In particular the terminal stations transmit with the several phy modes so that the signals are received at the master station making a performance related parameter equal. Then a hysteresis based on two different parameters (received power and available unused transmit power) is defined which regulates the phy mode switching.

Optimal two-leg histeresys for power control and phy mode switching control in adaptive phy mode systems

The present invention relates to adaptive phy mode systems, in which the modulation type and the forward error correction, jointly called phy mode, depend on the addressed terminal. Specifically, the present invention defines a power control technique for the terminal stations that also commands the phy mode switching. In particular, the peripheral stations transmit with the several phy modes so that the signals are received at the master station making a given performance related parameter equal. Then a hysteresis is defined which regulates the phy mode switching, setting suitable power thresholds of the signal. To keep the received power close to the working point of the appropriate phy mode, the master station relies on the received power level together with information regarding the unused power, which is available in the peripheral station. Thus, interference is reduced, and link coverage and throughput are optimized.

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Milan, Italy

Giulio Cavalli