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Telefonaktiebolaget L M Ericsson Patents
Assignee:
Telefonaktiebolaget L M Ericsson
Address:
publ) (Stockholm, SE
No. of patents:
4882
Patents:




Patent Number Title Of Patent Date Issued
7605676 Directional coupler October 20, 2009
The invention relates to a directional coupler comprising coupled lines, and a method for achieving coupling in a directional coupler under compensation conditions. The directional coupler comprises coupled lines (8, 9), including a first line (8) and a second line (9), and at least
7602866 Signal receiver devices and methods October 13, 2009
A method/apparatus is provided that detects impairment in a received signal and employs the structure in the receiver that is designed for that purpose. Preferably, the method/apparatus detects the interferer modulation and employs the structure in the receiver that is designed for t
7602852 Initial parameter estimation in OFDM systems October 13, 2009
A coarse estimate of a location of an information carrying part of a symbol in a received signal in a telecommunication system is generated. This involves generating correlation values by correlating the received signal with a delayed received signal. A maximum correlation value of the
7602838 Linear turbo equalization using despread values October 13, 2009
A linear turbo-equalizer for use in a CDMA receiver equalizes a despread received signal (rather than the spread received signal) to suppress self-interference resulting from coupling between transmitted symbols. In an example implementation, a linear equalizer based on a generalized-Rak
7602809 Reducing transmission time for data packets controlled by a link layer protocol comprising a fra October 13, 2009
A system, method, and router in a packet-switched communication network for enhancing network performance when data packets are transported utilizing a link layer protocol such as the Point-to-Point Protocol (PPP). Lengthy low priority data packets are fragmented at each hop. A route
7602327 Digitally controllable on-chip resistors and methods October 13, 2009
A digitally controllable resistor includes a substrate and at least one digitally controllable resistance stage formed on the substrate. Each of the stage(s) can include a first resistor connected in series with a switch and a second resistor connected in parallel with the first resi
7600164 Interleaving/de-interleaving using compressed bit-mapping sequences October 6, 2009
A method of mapping input bit positions in an input sequence to output bit positions in an output sequence uses compressed mapping sequences stored in memory derived from a predetermined mapping function. The mapping function is decompressed into periodic component functions that are use
7599978 Digital signal decimation by subspace projection October 6, 2009
A digital signal, x(n) (where n is an integer), is decimated by determining a signal vector, y(k), of size M by partitioning samples of the digital signal, x(n) according to sampling phases of the samples. The signal vector, y(k), is projected onto an N-dimensional sub-space, wherein
7599702 SIR estimates for non-scheduled mobile terminals October 6, 2009
A base station schedules one of a plurality of mobile terminals based on an expected SIR of an effective traffic channel associated with a non-scheduled mobile terminal. The expected SIR is generated by computing the expected SIR of a hypothesized traffic channel with a pre-filter ad
7599698 Network controlled channel information reporting October 6, 2009
A method of supplying channel information in a wireless communication system comprises a mobile terminal normally providing a basic channel report to the wireless communication system; the mobile terminal receiving at least one common feedback criterion broadcast to a plurality of mo
7599675 Method and apparatus for receiving radio frequency signals October 6, 2009
A frequency conversion receiver comprises a passive mixer, a Low-Noise Amplifier (LNA) and a balun. The low-noise amplifier generates an amplified single-ended signal responsive to a single-ended receiver input signal. The passive mixer generates a mixer output signal responsive to a
7599454 Method and apparatus for symbol alignment in diversity signal reception October 6, 2009
Methods and apparatus taught herein provide for symbol alignment between diversity signals in a communication receiver. For example, in one embodiment, a method of symbol aligning diversity signals in a communication receiver comprises generating diversity sample sets for a received
7599453 Doppler spread estimation for OFDM systems October 6, 2009
A Doppler spread value of a channel in an Orthogonal Frequency Division Multiplexing (OFDM) system is estimated, wherein the channel comprises a plurality of carrier frequencies. Estimating involves selecting a set of two or more carrier frequencies from the plurality of carrier freq
7599402 Communication device and method October 6, 2009
A device and method for controlling data unit communications between a sender and a receiver, and flexibly responding to a potential data loss event. Data units are transmitted from the sender to the receiver, and the receiver returns an acknowledgment data unit for each data unit re
7599394 Common rate control method for reverse link channels in CDMA networks October 6, 2009
A mobile station dynamically adjusts its data transmission rate based on periodic load indications from a base station. The mobile station calculates a load tracking value based on two or more periodic load indications, and then calculates a rate change probability as a function of t
7599378 Signalling in a telecommunications network October 6, 2009
A method of transporting Call Control related signalling information between a first telecommunications network employing Signalling System No. 7 (SS7) signalling and a second telecommunications network in which Call Control functionality is handled by Media Gateway Controllers and B
7599375 Updating quality of service reservation October 6, 2009
A method, an associated end point and an associated router for updating a reservation established for a session between a first end point in a first administrative domain and a second end point in a second administrative domain wherein the reservation is valid in the first administra
7599298 Method and apparatus for selecting a preferred LSP path from a set of equal cost paths October 6, 2009
A telecommunications system includes an MPLS network. The system includes a source node in communication with the network. The system includes a destination node in communication with the network and with the source node through a plurality of different paths. Each path of which has a
7599286 System and method for achieving path symmetry in an internet protocol (IP) based network October 6, 2009
A system and method for improving network performance when communicating between a first site network and a second site network via an IP-based transport network. The site networks include a LAN, a plurality of host/media gateways (MGWs) connected to the LAN, and pairs of first and s
7596364 Merged low-noise amplifier and balun September 29, 2009
An RF amplifier can include a differential inductor for single-ended-to-differential signal conversion. With a center tap of the differential inductor coupled to signal ground and the RF input signal coupled to one of the end taps of the inductor, the negative of the RF input signal
7596110 Routing in virtual private network September 29, 2009
A router providing selective routing depending on traffic direction. The router includes two IP interfaces, where each IP interface is associated with a respective virtual private network. The router uses two forwarding tables. The first forwarding table routes traffic towards a first IP
7593734 Method and an apparatus for cell planning September 22, 2009
Measuring in a cellular telecommunication system the position of active mobile stations and the service, in terms of bit rate, they use. The first figure shows a number of users, four black dots having a voice connection with low bit rate and two users O having packet switched connec
7593405 Inter-domain traffic engineering September 22, 2009
Methods and router for receiving a request message addressed from a first router to setup an inter-domain QoS reservation toward a second router in a further domain, forwarding the request message to setup the inter-domain QoS reservation, receiving an acknowledgment message to confi
7593384 Efficient channel quality reporting and link adaptation for multi-carrier broadband wireless com September 22, 2009
Multi-carrier broadband wireless communication can be supported by providing identification information that identifies a group of carrier frequencies that an intended recipient of a transmission has selected for use in the transmission. A modulation and coding scheme for use in tran
7593359 Method and system for floor control for group call telecommunications services September 22, 2009
A telecommunications network (10) comprises a group call service server (18) which facilitates a group call over a radio interface (32) between different user equipment units (30) in a defined group within the telecommunications network. The group call service server (18) receives a
7590732 Enhancement of AAA routing originated from a local access network involving intermediary network September 15, 2009
Enhanced routing of an authentication, authorization, or accounting-related (AAA) message between a local access network associated with a roaming mobile terminal and a home service network is described. A list of one or more intermediary service networks preferred for possible use i
7590167 Method and apparatus for QAM demodulation in a generalized rake receiver September 15, 2009
A wireless communication device includes a Generalized RAKE (G-RAKE) receiver circuit that is configured to determine a traffic-to-pilot gain scaling parameter as part of the impairment correlation determination process that underlies (G-RAKE) combining weight generation. In this man
7587600 Loading data onto an electronic device September 8, 2009
A method of protecting an electronic device from unauthorized reprogramming, the electronic device comprising a data memory and a key memory, the method comprising loading into the key memory a predetermined public key of a cryptographic public key mechanism for verifying subsequent
7587477 Optimization of handover procedures in GPRS September 8, 2009
The present invention discloses a method related to Attach procedures and Routing Area Update (RAU) procedures in packet switched cellular networks, in particular GPRS and UMTS networks. When an MS roams from a routing area covered by several SGSNs in an SGSN pool into a routing area
7587219 System and method for adaptive broadcast service September 8, 2009
A system and method for adapting a broadcast service in a cellular communication network. A base station receives indications of channel quality from registered users of the broadcast service, and adapts broadcast transmission parameters to improve channel quality for the broadcast u
7587203 Forward link admission control for high-speed data networks September 8, 2009
Admission control is performed on a forward link shared packet data channel based on the measured delay per unit of data transmitted on the channel or the data throughput on the channel. In another embodiment, statistical analyses of channel quality metrics received at a base station
7587196 Wireless point of sale transaction September 8, 2009
A transaction request by a first customer device is processed by a transaction system. The transaction request is approved by transmitting a data signal from the first customer device to the transaction system via a wireless communications link. Respective wireless communications links
7587009 Synchronization and estimation of a transmission channel September 8, 2009
A method of estimating a transmission channel (302) comprises receiving a signal burst, which includes a sequence of training symbols; and determining (305) a desired synchronization position (p) of the training sequence with respect to the received signal burst. The method further c
7586974 Method and apparatus for rake finger allocation in a DS-CDMA receiver September 8, 2009
A Direct-Sequence Code Division Multiple Access (DS-CDMA) receiver and method of allocating probing correlators and combining correlators (fingers). A front-end processor converts received radio signals to baseband samples. Based on average path strengths, a controller adaptively all
7586922 Providing higher layer packet/frame boundary information in GRE frames September 8, 2009
A Packet Data Services Node (PDSN) optionally frames user data from an Application IP packet received from a public data network (e.g., the Internet) into a Point-to-Point Protocol (PPP) frame, and encapsulates the Application IP packet or PPP frame data into one or more Generic Rout
7586882 Higher layer packet framing using RLP September 8, 2009
Higher layer packet (HLP) framing information is transmitted across an air interface only as necessary, utilizing the Radio Link Protocol (RLP). In one embodiment, HLP framing information is transmitted in RLP control frames, between each HLP. In another embodiment, HLP framing informati
7586865 Allocating power when simultaneously sending multiple messages September 8, 2009
A base station receives multiple first signals from multiple mobile terminals over a first radio channel (e.g., a RACH, a CPCH, etc.). Multiple acknowledgement signals are generated for transmission over an acquisition indication channel (AICH) during a same access time slot. Each ac
7586847 Method and apparatus for network imposed packet data flow control September 8, 2009
A method and apparatus provide network-based flow control for mobile station having data connections to the network. In an exemplary embodiment, a Packet Control Function (PCF) in a Radio Access Network (RAN) requests that a Packet Data Serving Node (PDSN) in a Packet Core Network (P
7586428 Non-linear processing of signals September 8, 2009
In a non-linear processing system, the main non-linear processing and filtering is performed with low precision in a separate branch. A low-precision version (22) of the input signal (14) is created in an extractor (20), which is processed non-linearly in a low-precision non-linear p
7584471 Plug-in model September 1, 2009
Method and system for extending and/or modifying functionality of a platform for a product, such as a mobile terminal for a wireless telecommunications system. The system includes a platform domain having a software services component for providing functionality, and an interface com
7584293 Information transmission rate control across a core network September 1, 2009
The present invention relates to the information transmission rate between telecommunications nodes. More particularly the invention relates to the control of the rate at which information is transmitted between access nodes separated by a core network. The present invention provides an
7583760 Calculation of soft decision values using reliability information of the amplitude September 1, 2009
Method of, and arrangement and device for, decoding a communications signal in a digital communications system, where the communications signal is modulated according to a modulation scheme including amplitude information; generating a likelihood value for a received communications s
7583633 Hard handoff target generation in a multi-frequency CDMA mobile network September 1, 2009
A CDMA network dynamically generates hard handoff (HHO) target sets to support mobile station HHO. Dynamically identifying CDMA channels or cells as targets for HHO eliminates the need for statically configured HHO target sets. In an exemplary embodiment, a source BSS identifies a fi
7583590 Router and method for protocol process migration September 1, 2009
A router and a method for migrating routing protocol processes or Virtual Routers (VRs) from one Route Processor (RP) to another using graceful restart procedures for maintaining packet flow to the router and assisting the router to obtain restart information. The router includes fir
7583504 Cooling assembly September 1, 2009
A method and apparatus for cooling an electronic application having at least one heat-generating electronic component mounted on a circuit board. A heat transferring heat sink is attached to the circuit board in thermal contact with one heat generating electronic component by first b
7583155 Random sequence generator September 1, 2009
A device for generating a random sequence (10) of bits is disclosed. The device comprises oscillating means (13), which will generate a random sequence of bits when biased with a noise signal. The oscillating means comprises at least one oscillator amplifier being protected from inte
7580712 Wireless high-speed data network planning tool August 25, 2009
Tools and methods are provided to model and simulate the high-speed data channel and the traffic scheduling function, and tools and methods to simultaneously simulate the high-speed data channel and other voice and data services sharing the same radio carrier. The tools and methods e
7580686 Adaptive predistortion method and arrangement August 25, 2009
An adaptive predistortion arrangement includes means (26, 40, 42, 44, 46) for up-converting a baseband signal (S1) into an intermediate frequency signal (S12) having frequency aliazing and means (18, 20, 220, 24, 26) for down-converting a radio frequency signal (S4) into an intermediate
7580683 Radio transceiver on a chip August 25, 2009
An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and down-conversion durin
7580677 Communications interface device for receiving digital signals August 25, 2009
A communications interface device (4) has circuitry for receiving digital signals in the form of characters according to a protocol defining that a communications link is initialized by a series of start characters, each having a specified duration. The receiving circuitry can assume a f

 
 
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