Abstract:
The present invention relates to a method and an infrastructure arrangement for controlling power consumption of at least one User Equipment (UE) (320a-320c) in a wireless communications network (300) by initially scheduling said at least one UE and increasing power efficiency for said at least one UE (320a).
Abstract:
A method for use in a cellular system (100) in which there can be a plurality of base stations (113, 123), each of which services at least one cell (111, 121) in the system by routing all traffic to and from users (112, 122) in the cell. The system additionally comprises at least one ASN-GW (130), an Access Service Network Gateway, which serves to connect at least a first number of said base stations to a Connectivity Service Network. The method comprises assigning to each of said base stations (113, 123) which are connected to said ASN-GW (130) an identity (BSID) which is unique at least among said number of base stations (111, 121), and the method additionally comprises assigning to each base station the ASN-ID, in other words the identity of the ASN-GW, to which the base station is connected.
Abstract:
The present invention relates to a compound of formula (1), (2) or (3) having the following structures: Formula 1, 2, 3 wherein X, Y, and Z are independently C or N; A is a direct bond, CH2 or NH;B is a direct bond or NH; n= 0-2; R1 is H, optionally substituted C 1-4 191 alkyl, C 3-7 191 cycloalkyl, halogen, cyano, nitro, aryl, or alkylaryl; R2 is H, C 1-4 191 alkyl, or alkoxy C 1-4 191 alkyl;or R1 and R2 are taken together to form an unsaturated 6-membered aromatic or heterocyclic ring containing one or two heteroatoms fused to the pyridone; R3 is a direct bond, H, C 1-4 191 alkyl, substituted C 1-4 191 alkyl, C 3-7 191 cycloalkyl, aryl or alkylaryl; R4 is a direct bond or H; R5 is C 1-4 191 alkyl or aryl; R6 and R7 are independently H or C 1-4 191 alkyl; R8 and R9 are independently H, C 1-4 191 alkyl, or tert -butoxycarbonyl or R8 and R9 are taken together with the nitrogen to which they are attached and form optionally, unsubstituted, substituted, fused or unsaturated 5-,6-,7-membered heterocycles containing one or two heteroatoms wherein said substituents are selected from the group consisting of hydroxyl, hydroxymethyl, carboxymethyl, carboxy, methoxy, and tert -butoxy;as ( R )-enantiomers, ( S )-enantiomers or a racemate in the form of a free base or a pharmaceutically acceptable salt or solvate thereof.
Abstract translation:本发明涉及具有以下结构的式(1),(2)或(3)的化合物:式1,2,3其中X,Y和Z独立地为C或N; A是直接键,CH2或NH; B是直接键或NH; n = 0-2; R 1为H,任选取代的C 1-419烷基,C 3-7191环烷基,卤素,氰基,硝基,芳基或烷基芳基; R2是H,C1-4191烷基或烷氧基C1-4191烷基;或R1和R2一起形成含有一个或两个与吡啶酮稠合的杂原子的不饱和6元芳族或杂环; R3是直接键,H,C1-4191烷基,取代的C1-4191烷基,C3-7191环烷基,芳基或烷基芳基; R4是直接键或H; R5是C1-4191烷基或芳基; R6和R7独立地是H或C1-4191烷基; R 8和R 9独立地是H,C 1-419烷基或叔丁氧基羰基,或者R 8和R 9与它们所连接的氮一起形成,任选地是未取代的,取代的,稠合的或不饱和的5-,6-, 含有一个或两个杂原子的多元杂环,其中所述取代基选自羟基,羟甲基,羧甲基,羧基,甲氧基和叔丁氧基;作为(R) - 对映异构体,(S) - 对映异构体或形式的外消旋物 的游离碱或其药学上可接受的盐或溶剂化物。
Abstract:
When a multi-carrier signal is received, it is sampled and digitised before FFT processing, (or wavelet transform processing). Multi-carrier signals consist of many narrow band carrier waves which convey data via a wide band channel. The amplitude distribution of the sum of all the individual carriers is Gaussian. This means that high amplitudes occur with low probability. At the present time, analogue to digital convertors have a limited dynamic range. It is, therefore, normal practice to provide a compromise between cutting and quantisation noise. This means that the adverse effects of a coarse quantisation have to be balanced against signal distortions caused by loss of the low probability high amplitude signals. 00000
Abstract:
Modern multi-carrier techniques using orthogonal carriers with high order QAM constellations for the transmission of a plurality of bits per carrier and symbol, use some method for the determination of an inverse channel model to be used in an equalisation process. In the frequency domain, this is normally based on an estimate of the channel attenuation and phase for each carrier. The present invention provides a simplified method of equalisation that uses data at the symbol detector input and output to adaptively estimate an inverse channel model.
Abstract:
In certain types of transmission system using nQAM it may be desirable to use a control channel superimposed on a nQAM data channel. In such circumstances it is very desirable to be able to separate control channel data from user data without using a higher level protocol layer. For applications in multi-carrier systems with variable bit-loading it is particularly desirable that the control channel data be separable from user data when the value of n, i.e. the bit-loading, or constellation identifier are unknown. Binary data is transmitted using nQAM modulation. The binary data comprises both user data and control data. This means that a control channel is superimposed on a user data channel within the same nQAM constellation. Separation of said control data is facilitated by arranging control data points to have either unique phase, or unique amplitude, values. These unique values are not employed for user data points.
Abstract:
In a multi-carrier system, such as a DMT system, a receiver must be able to recover a sampling clock that is very accurately synchronized to a transmitter sampling clock. Typically, synchronization is achieved by using a reserved carrier, the pilot carrier, which is transmitted with a fixed phase. The receiver sampling clock is then phase locked to the pilot carrier. Frame timing can be recovered by using a correlation technique. The present invention provides an improved method of recovering a sample clock and phase locking the sampling clock to a pilot carrier.
Abstract:
The invention provides a multi-carrier transmission system, for example, a DMT based VDSL system, using orthogonal carriers with high order QAM constellations for the transmission of multiple bits per carrier and symbol, said system including digital receiver and transmitter units, said receiver unit including a symbol detection unit, characterised in that said system is adapted to determining a parameter for each single carrier, said parameter being indicative of a deviation of a received signal from a corresponding constellation point; comparing the parameter with an upper and lower limit; and, if the parameter is outside said limits, changing the constellation used to modulate the carrier to a neighbouring constellation. The symbol detection unit may be used to determine the parameter which may be a ratio d / sigma , where d is the shortest distance between neighbouring constellations, sigma is a standard deviation, and sigma is the variance of the deviations of the input and output signal values of said symbol detection unit.
Abstract:
The invention provides a multi-carrier transmission system, for example, a DMT system, in which channel information is transmitted between two transceivers using a plurality of sub-carriers, characterised in that each sub-carrier, or symbol, has a parameter associated therewith, and in that said transceivers are adapted to transmit said channel information as a sequence of n groups, in which each of said n groups contains information concerning the number of adjacent sub-carriers which have the same value as said parameter, together with the actual value of the parameter. The parameter which may have a plurality of discrete values, may be a bit-loading value, or a QAM constellation identifier.
Abstract:
In a multi-carrier system, such as a DMT system, a receiver must be able to recover a sampling clock that is very accurately synchronized to a transmitter sampling clock. Typically, synchronization is achieved by using a reserved carrier, the pilot carrier, which is transmitted with a fixed phase. The receiver sampling clock is then phase locked to the pilot carrier. Frame timing can be recovered by using a correlation technique. The present invention provides an improved method of recovering a sample clock and phase locking the sampling clock to a pilot carrier.