| Patent application number | Description | Published |
|---|
| 20080259961 | Data Unit Relay Device and Method of Controlling the Same - A method of controlling a data unit relay device is described, applied to a relay ARQ protocol in accordance with which a source peer sends data units to a destination peer via at least one relay peer. The relay ARQ protocol provides for a first type and second type of receipt information, where the first type is indicative of a correct receipt at a relay peer, and the second type is indicative of a correct receipt at the destination peer. In a data unit relay device that is arranged for deliberately dropping data units of the relay ARQ protocol under one or more predetermined conditions, a procedure is provided for indicating to the source peer and the destination peer that a data unit has been deliberately dropped and for identifying the deliberately dropped data unit, such that the source and destination peer may perform retransmission control for the dropped data unit as if it had been successfully received at the destination peer | 10-23-2008 |
| 20080317017 | Data Unit Sender and Data Unit Relay Device - New methods and devices for implementing an ARQ mechanism over a multi-hop connection (sender-relay-receiver) are proposed. A communication protocol is described in accordance with which data units are arranged in a sequence and each sent data unit is identifiable by a sequence position identifier. The sender implements a sending peer, the relay a relay peer and the receiver a receiving peer. Feedback messages are exchanged, which using said sequence position identifiers, carry information on a receipt of sent data units. The communication protocol provides for at least a first type and a second type of receipt information, the first type (RACK) of receipt information being indicative of a correct receipt of a data unit at a relay peer of said communication protocol, and the second type (ACK) of receipt information being indicative of a correct receipt of a data unit at a final destination peer of said communication protocol. | 12-25-2008 |
| 20090052402 | TECHNIQUE FOR CONFIGURING LINK LAYER ENTITIES FOR A HANDOVER - A technique of configuring link layer entities for a handover is described. In a method embodiment, the technique includes receiving from a recipient of protocol data units a supplemental status report for an existing ARQ connection in context with an imminent handover, determining service data units corresponding to buffered protocol data units taking into account information included in the supplemental report, and transferring the determined service data units to a link layer entity which is to establish a new ARQ connection to the recipient. The forced status synchronisation that is based on the supplemental report prevents the transfer of service data units that have already been successfully received at the recipient. | 02-26-2009 |
| 20090154356 | FLOW CONTROL MECHANISM USING LOCAL AND GLOBAL ACKNOWLEDGEMENTS - A method of sending data units from a sending node to a receiving node via at least one intermediate node, where: the data units are arranged in a sequence and each data unit is associated with a sequence position identifier; the intermediate node forwards received data units towards the receiving node and sends feedback messages towards the sending node, where in case of a correct receipt of a given data unit at said intermediate node, a corresponding feedback message comprises a first type receive information that indicates said correct receipt at said intermediate node; the receiving node sends feedback messages towards the sending node, where in case of a correct receipt of a given data unit at said receiving node, a corresponding feedback message comprises a second type receive information that indicates said correct receipt at said receiving node; the intermediate node forwards said second type of receipt information towards said sending node and conducts a data unit retransmission procedure in dependence on received receive information; and the sending node conducts a data unit retransmission procedure in dependence on received receipt information of the first and second type, and conducts a data unit flow control procedure for controlling an amount of data that can be sent at a given time in dependence on said first and second type receipt information. | 06-18-2009 |
| 20090222704 | FORWARD FEEDBACK FOR UL MACRODIVERSITY - A method of controlling a data unit transmission from a sender ( | 09-03-2009 |
| 20090240817 | System and method for transporting data units through a communication network - A system and method for transporting data units for a communication network. In a communication between two peers a proxy and a network entity for controlling a partial communication are provided. One or both of the proxy and the network entity is arranged to modify one or more of the data units, in order to provide communication control related information that is different from communication control related information exchanged between the two peers The respective other or both of the proxy and the network entity is arranged to perform data unit transmission control based on the different communication control related information. | 09-24-2009 |
| 20100014466 | Method and a Device for Improved Status Reports - The invention discloses a method ( | 01-21-2010 |
| 20100046405 | METHOD AND ARRANGEMENT FOR ALIGNMENT OF PROTOCOL DATA UNITS IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and arrangement for communicating a Protocol Data Unit (PDU) between a transmitter unit and a receiver unit in a wireless communication network. Said PDU comprising protocol headers associated with at least a first and a second protocol layers involved in the communication and a payload to be communicated. The method comprises the step of interacting between the at least first and second protocol layers, such that the sum of the bits of the protocol headers is n-bit aligned such as octet aligned independently of non-alignment of at least one of the protocol headers comprised in the PDU. | 02-25-2010 |
| 20100074276 | LENGTH INDICATOR OPTIMIZATION - A method, node device, signal, and instruction set to reduce the size of data packets in a telecommunications network. The invention provides a solution wherein a size of SDU position identifiers in a header of a packet data unit is optimized depending on the actual size of the packet data unit, reducing the amount of data sent in the telecommunication network. | 03-25-2010 |
| 20100081443 | METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM - The present invention relates to a method in a cellular communication system, for avoiding errors in a HARQ process, wherein an NDI flag is used both for indicating either semi-persistent scheduling, SPS activation or SPS retransmissions, and also for indicating, by toggling of the flag, a new transmission in dynamic scheduling mode. The method comprises the steps of receiving, in a scheduling message, an indication that dynamically scheduled transmission will take place; if a semi persistent resource has occurred for the same HARQ process since a previously received indication for dynamically scheduled transmission, then considering the NDI flag to be toggled regardless of the value of the NDI flag. Thus, if the condition is fulfilled, a UE will always regard the NDI flag as indicating or requesting a new data transmission. | 04-01-2010 |
| 20100085927 | (H)ARQ FOR SEMI-PERSISTENT SCHEDULING - A radio communications link is established between radio stations, and a semi-persistent radio resource is allocated to support data transmission over the communications link. The semi-persistent radio resource is associated with a corresponding automatic repeat request (ARQ) process identifier. Non-limiting examples of a semi-persistent radio resource include a regularly scheduled transmission time interval, frame, subframe, or time slot during which to transmit a data unit over the radio interface. Retransmission is requested of a data unit transmitted using the semi-persistent radio resource. The ARQ process identifier associated with the semi-persistent resource is used to match a retransmission of a data unit dynamically scheduled on the communications link with the requested data unit retransmission. In a preferred example embodiment, the ARQ process identifier is a hybrid ARQ (HARQ) process, where a retransmitted data unit is combined with a previously-received version of the data unit. | 04-08-2010 |
| 20100118876 | Link Layer Control Protocol Implementation - The present invention relates to a link layer control protocol implementation in a communication system. To improve operative efficiency of the link layer control protocol implementation it is suggested to delay issuance of a retransmission request for a missing data unit during a retransmission delay time period. Therefore, according to the present invention a retransmission request is not issued immediately upon detection of a missing data unit. Therefore, the present invention avoids issuance of false alarm for the missing data unit when it is received during the retransmission delay period. | 05-13-2010 |
| 20100135249 | Method and Apparatus for Seamless Handover in a Wireless Communication Network - In a wireless communication network where base stations receive protocol data units (PDUs) from mobile stations for decompression and deciphering for ordered, sequential transfer as service data units (SDUs) to an associated core network, the teachings presented herein provide a method of supporting seamless handover of a mobile station from a source base station to a target base station. By way of example, the teachings herein apply to a network based on the E-UTRA specifications, as promulgated by the 3GPP. However, that example is non-limiting, as the teachings herein apply to any network that employs in-sequence data delivery and duplicate data detection at handover. Broadly, the source base station forwards out-of-sequence SDUs and corresponding sequence number information to the target base station in support of seamless handover, and the target base station uses that information to request retransmissions as needed for packet reordering. | 06-03-2010 |
| 20100192035 | Method and Arrangement for Retransmission Using HARQ - The present invention relates to a method and device for enhancing coverage of a power-limited mobile terminal by sending information relating to a single Hybrid Automatic Repeat Request (HARQ) process from the mobile terminal to a base station using several transmission time intervals. | 07-29-2010 |
| 20100202420 | Methods and Systems for Scheduling Resources in a Telecommunication System - Aspects of the present invention relate to the scheduling of resources in a telecommunication system that includes a mobile terminal and base station. In one embodiment, the mobile terminal sends an initial scheduling request to a base station. Subsequently, the mobile terminal does not transmit a scheduling request to the base station unless and until a scheduling request triggering event is detected. | 08-12-2010 |
| 20100238931 | Technique for Handling Residual Space in Packet Data Transmissions - The invention relates to techniques for handling residual space occurring in packet-based data transmissions, wherein according to one embodiment of a method for controlling a packet-based data transmission, in case an amount of residual space in the packet ( | 09-23-2010 |
| 20100322098 | METHOD AND ARRANGEMENT IN A TELECOMMUNICATION SYSTEM - A method for sending buffer status information includes checking if a quality of service (QoS) parameter is defined for a first logical channel and at least one condition of a set of predetermined conditions associated with a logical channel group is fulfilled. If the QoS parameter is defined and at least one condition of the set is fulfilled, the method includes setting a number of bits in a media access control header according to a first semantic. The bits carry buffer status information, and the first semantic is based on the QoS parameter of the first logical channel. Otherwise, the method includes setting the number of bits carrying the buffer status information according to a second semantic that is based on an amount of data available for transmission across the logical channel group. | 12-23-2010 |
| 20100322155 | Method and Arrangement in a Telecommunication System - A method is provides in a receiving node for handling status information of data units transmitted from a sending node to the receiving node over a radio link. The receiving node establishes ( | 12-23-2010 |
| 20110044195 | Method and a Transceiver for HARQ Failure Detection - The present invention relates to a method and to a transceiver ( | 02-24-2011 |
| 20110058475 | Utilization of Data Links - Control of a data packet buffer in a communication system is described. Control of a data packet queue in a transmission link is shown. In the queue there is stored a plurality of received data packets that are intended for transmission over a wireless interface. Selected packets are discarded from the queue without the selected packets having been transmitted. A packet is selected for discarding depending on at least the length of time the packet has been stored in the queue. The discarding of a selected packet is effectuated on condition that at least a predetermined time period has elapsed since a previous discarding of a packet has taken place. Such a solution is advantageous in that, for varying transmission bandwidth conditions in the transmission link, it is possible to achieve good link utilization and throughput, while at the same time enabling a low end-to-end delay for packets transmitted in the link. | 03-10-2011 |
| 20110059767 | METHOD AND APPARATUS IN A TELECOMMUNICATIONS NETWORK - According to the present invention, a receiving node of a telecommunications network ( | 03-10-2011 |
| 20110075562 | Rate Shaping For Wireless Communication Using Token Bucket That Allows Token Debt - A modified token bucket algorithm in a rate shaping function of a wireless communication network allows for the “borrowing” of tokens, creating the possibility of a token debt, or a token bucket with a negative Token Bucket Counter (TBC) value. In this modified algorithm, an incoming packet is passed along so long as the TBC is positive, even if the packet must “borrow” some tokens, driving the TBC negative. Subsequent incoming packets are stalled until the TBC reaches a positive value. In one embodiment, the modified token bucket algorithm is not applied to a separate rate shaper, but rather to a queue size limiter that operates with a scheduler on a single queue. The inventive scheduler and queue size limiter deliver fewer, larger packets for transmission, allowing for more efficient packing within transmission frames (reducing or eliminating required padding), and allowing other traffic to be scheduled, thus increasing system throughput. | 03-31-2011 |
| 20110125905 | Allocation of Resources to Shared Spectrum Operators - A system operator may connect to an infrastructure resource and request a slice of spectrum resources with desired properties and a desired capacity. A slice manager of the infrastructure resource checks whether the request can be fulfilled from the available free capacity and optionally considers additional policies. If the outcome is positive, the slice manager offers a slice with a specific capacity, which may or may not be identical to the system operator' s requested capacity. The offer may contain other information such as cost and billing details. In case the offer is acceptable to the system operator, he sends an accept message to the slice, manager. Optionally, there may be additional negotiation steps. | 05-26-2011 |
| 20110134780 | Method of Requesting CQI Reports - In a method and a device for requesting Channel Quality Indication (CQI) reports from a mobile station of a cellular radio system, the CQI reports are requested in response to a measured Block Error Rate (BLER) of transmissions from the mobile station. In accordance with one embodiment of the present invention a CQI report is requested if the BLER of the mobile station is above a predetermined threshold value C. The threshold value C can be set to a value related to the BLER target. In particular the value C can be set to the same value or as a value close the BLER that is targeted to try to adapt the CQI report request to how well the base station knows the channel. It can also be set higher or lower to also consider how much CQ1 reporting the base station estimates can be afforded when it comes to uplink resources and uplink grant signaling in the downlink. | 06-09-2011 |
| 20110145672 | HARQ Process Continuation after CQI-Only Report - Techniques for controlling synchronous HARQ retransmissions are disclosed, in which non-adaptive retransmissions scheduled for a first transmission time interval are automatically deferred to a later transmission time interval in the event that a control message prohibiting the retransmission during the first transmission interval is received. In an exemplary method, a NACK message is received ( | 06-16-2011 |
