Telefonaktiebolaget Lm Ericsson (publ)

Ericsson Gmbh

Mathias Johansson

Christiaan Roobol

Per Johan Beming

Johan Lundsj&ouml;

Joachim Sachs

Bela Rathonyi

Lars Adolfsson

Michael Meyer

Johan Larsson

Per Bäckström

Erik Bengt Dahlman

John Walter Diachina

Kazuhiko Inoue

Roger Kalden

Erik Sch&ouml;n

Per Backstrom

Christian Roobol

Raul S&ouml;derstrom

Johan KÖLHI

A telecommunication system and method enables an end user to select communication services from a plurality of communication service networks providing different communication services. A telecommunication switch is connected to the service networks, and one or more local network terminals communicate with the switch through connections configured to carry communications for the different communication services provided by the service networks. A plurality of user devices, each configured to support a corresponding communication service, connect to the network terminal through a plurality of service ports. The network terminal configures the service ports for the respective user devices, and provides communications for a corresponding service to an activating user device in response to an activation of a service port by the activating user device. The telecommunication switch and/or the local network terminal may prioritize communications from particular service networks.

Arrangement and a method in a switched telecommunication system

The present invention relates to a telecommunication system giving the option to a user (A) to select desired services. A switched domain () for transmission of data packets has switches (SW), to which service providers (), and network terminals (NTNT) are connected. The switches have a user port (Pf) through which one single physical connection is connected to an uplink port (Pe) in the network terminal (NT). The user port (Pf) is configured for the different service providers () and the network terminals have corresponding service ports (Pc,Pd). The user (A) or an operator (OP) configures the service ports (Pc,Pd) which corresponds to the desired services (). Using a policy server (PS), which is connected to the network terminals (NT) the traffic in these can be given priority. The data packets in the traffic which requires real time transmission, for example television (), is given priority before data traffic on Intranet ().

A flexible Radio Link Control (RLC) protocol for a mobile communication system is provided, whereby a plurality of different RLC functions are defined. These different RLC functions can be combined in a number of different ways to produce a complete and functional, but more flexible RLC protocol than the existing protocol. For example, a new set of rules are provided for determining how and/or when to poll for, or send, a status report for Automatic Repeat Request (ARQ) purposes. As such, for a specific service configuration, one set of the rules can be used, and for a different service configuration, another set of the rules can be used. In this way, the rules can be conformed suitably to the type of service involved.

Flexible radio link control protocol

The present invention relates to a telecommunication system enabling a user to select services. A telecommunication system having a switched domain comprising switches is disclosed. Service networks are connected to the switches and users are also connected to the switches using fines. An IP path selector and an operator are also connected to the switches. The operator forms service network groups by selecting among the service networks. The service network groups are allocated a virtual local network each by configuring the ports in the switches and the IP path selector. The users can select services by means of selecting one or several of the virtual local networks. By configuring their devices to their chosen virtual local network the user receives the services desired. The user can also change his selection of services by reconfiguring and thus connect to an alternative virtual local network.

A method for minimizing feedback responses in an ARQ protocol is disclosed, whereby different mechanisms can be used to indicate erroneous D-PDUs and construct S-PDUs. The S-PDUs are constructed so as to optimize performance in accordance with certain criteria. One such criterion used is to minimize the size of the S-PDUs. A second such criterion used is to maximize the number of SNs included in an S-PDU of limited size.

Method for minimizing feedback responses in ARQ protocols

An method of establishing a radio bearer (RB) resource in an RAN to support communication with a mobile terminal uses a radio bearer resource request message to expedite RB resource allocation. The mobile terminal transmits a packet channel access request message that uniquely identifies the access request type as a RB access request. The requested RB may be a signaling radio bearer (SRB), in which case the RB access request message may identify the specific type of SRB desired. More generally, the RB access request message identifies the access request type as a RB resource request, which is enough to alert the RAN that RB resources are required. The RAN then sends an uplink packet channel assignment and the mobile terminal specifies the RB resource details by transmitting RLC header information on the assigned uplink channel.

Short access for realizing a signaling radio bearer in geran

The reliability of data communication by is improved analyzing plural data units in a group or a block rather than analyzing individual data units. For example, at the time that a transmitter desires or needs to send a polling request to a receiver, there may be more than one data unit available for delivery as a group. The polling fields of all the data units in this group are set to indicate a poll request. When the receiver receives this group of data units, it sends the requested status information to the transmitter if the polling field of at least one of the received data units in the group indicates a poll request. Moreover, the receiver sends the requested status information only once. Those other polling fields may be used to increase the reliability of the transmission.

Method and apparatus for reliable and efficient data communications

A data communications unit determines both efficiently and accurately when one or more data units should be received under a variety of conditions. In particular, the present invention compensates for transmission delays and for varying transmission rates over the communications channel. During a communication between first and second communications nodes, the first node receives a sequence of data units transmitted from the second node. The first communications node determines that one or more of the transmitted data units was either not received at all or was erroneously received (i.e., corrupted). The first node then sends a request to the second node to retransmit the one or more data units not received or erroneously received. A retransmit timer is started when the retransmission request is sent. The retransmit timer accounts for the delay time period required for the retransmit request to reach the second node, for the second node to retransmit the requested data units, and for the retransmitted data units to reach the first node. When the timer indicates that the delay time period has occurred/expired, a counter is started. Based on the counter's value, a determination is made whether all of the data units requested to be retransmitted have been properly received. If the determination indicates that the requested one or more data units has been retransmitted and properly received, no further action is taken. On the other hand, if the requested one or more data units to be retransmitted is not received or is erroneously received, the above-described procedure is repeated.

Method and apparatus for determining an optimum timeout under varying data rates in an RLC wireless system which uses a PDU counter

A method for processing multiple data services over a communications link between a mobile station and a base station is disclosed. A RLC/MAC protocol layer of the communications link between a mobile station and a base station receives a plurality of radio bearer services each including at least one service provided by the mobile station. The plurality of radio bearer services are processed in such a manner that services having substantially similar quantity of signal requirements are combined for transmission on a single logical channel. Data within the transmission blocks may be prioritized to enable flexible control of transmission rates.

Multi-service handling by a single mobile station

An optimal data block size is determined for use in transmitting data at variable rates over a communications link in predetermined time intervals, where each predetermined time interval has the same time duration. Rather than varying data block size according to changes in transmission rates, which adds unnecessary complexity, the data blocks all have the same fixed size, i.e., the same number of data bits in each block. That fixed data block size is determined so that for all of the available data transmission rates, each predetermined time interval is fully occupied with useful information. The fixed data block size is determined based on a maximum frequency at which the transmission rate may change on the communications link and a lowest available transmission rate. Preferably, the fixed size of each data block is limited by predetermined maximum and minimum data block sizes in order to reduce the number of bit errors per data block, maintain a certain data throughput, and limit the amount of overhead bits relative to the number of payload bits for each data block.

Data transmission over a communications link with variable transmission rates

A technique for providing a secure link when transitioning between pairs of link layer protocol entities in a mobile communication system is disclosed. The first pair of link layer protocol entities includes a first transmitting link layer protocol entity and a first receiving link layer protocol entity. The second pair of link layer protocol entities includes a second transmitting link layer protocol entity and a second receiving link layer protocol entity. The technique is realized by first suspending data transmissions from the first transmitting link layer protocol entity to the first receiving link layer protocol entity, and then initiating data transmissions from the second transmitting link layer protocol entity to the second receiving link layer protocol entity. Unacknowledged segmented data in the first transmitting link layer protocol entity is then tunneled from the first transmitting link layer protocol entity to the first receiving link layer protocol entity through the second transmitting link layer protocol entity and the second receiving link layer protocol entity.

Technique for providing a secure link in a mobile communication system

In a spread spectrum communications system supporting bursty uplink and downlink data packet transmission telecommunications services, significant concerns exist as to the generation of unacceptable levels of interference resulting from plural and simultaneous data packet transmissions. To address this concern, the system selectively organizes an access schedule for mobile station uplink data packet transmissions and a delivery schedule for downlink data packet transmissions. For the uplink, the schedule is transmitted to plural mobile stations in a current frame, and identifies which one or ones of plural mobile stations are authorized to make an uplink data packet transmission in a next frame. Only those mobile stations scheduled with authorization to make an access in the next frame then transmit their data packets (or a portions thereof) to the base station during that next frame. On the downlink, a notification of intended delivery is communicated to destination mobile stations in a current frame. The system then makes downlink delivery in accordance with the schedule to the destination mobile stations in a next frame.

Packet data communications scheduling in a spread spectrum communications system

Methods of controlling the power levels of transmitted signals in telecommunication systems are described. A user may be assigned a plurality of radio bearers associated with a plurality of physical channels for communicating with a radiocommunication system. A fast power control loop monitors a reference channel and adjusts transmit power in accordance with an SIR target value. A plurality of slow power control loops adjust the SIR target value and also provide offset transmit power values associated with each physical channel to adapt the transmit powers in accordance with varying quality requirements between radio bearers.

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Sollentuna, Sweden

Mathias Johansson