Abstract:
The invention discloses an antenna device (500, 600, 700) for a radio base station in a cellular telephony system, which comprises a first and a second input connection for a first (Dl) and a second (D2) data stream, and a first (510, 610, 710) and a second (511, 611, 711) polarization former, one for each of said data streams. The device also comprises a first (530, 630, 730) and a second (532, 632, 732) antenna of respective first and second polarizations, and one amplifier each. The device also comprises a first (515, 615, 715) and a second (516, 616, 716) combiner, so that the outputs from the polarization formers may be combined as input to each of the first and second antennas.
Abstract:
Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first downlink subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second downlink subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology, where the first numerology has a first subcarrier spacing and the second numerology has a second subcarrier spacing, the first subcarrier spacing differing from the second subcarrier spacing. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.
Abstract:
Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first downlink subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second downlink subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology, where the first numerology has a first subcarrier spacing and the second numerology has a second subcarrier spacing, the first subcarrier spacing differing from the second subcarrier spacing. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.
Abstract:
The present invention relates to a dual polarized array antenna (1, 31) comprising at least two dual polarized antenna elements (2, 3, 4, 5, 6, 7, 8, 9; 32, 33, 34, 35, 36, 37, 39, 40) being arranged for radiating electromagnetic 5 energy having a first polarization, constituting a first antenna radiation pattern, via a connection to a first antenna port (28), and electromagnetic energy having a second polarization, constituting a second antenna radiation pattern, via a connection to a second antenna port (29), the second polarization being orthogonal to the first polarization, the first antenna radiation pattern and second antenna radiation pattern each having a main beam and a number of side-lobes with nulls. The array antenna (1, 31) comprises at least one further dual polarized antenna element (10, 38) arranged for radiating electromagnetic energy having two mutually orthogonal polarizations, constituting further antenna radiation patterns, via respective connections to the first antenna port (28) and the second antenna port (29), where the polarization of said at least one further dual polarized antenna element (10, 38) that is associated with the first antenna port (28) deviates from the first polarization such that said at least one null of the first antenna pattern is at least partly filled
Abstract:
The invention discloses a wireless telecommunications system (200) for stationary or semi-stationary equipment, and comprises a main node (C) and a first plurality (S1-S3) of terminals belonging to the same access subset and arranged to receive from and transmit to the main node (C). The main node transmits in at least one beam (110) and receives in at least two beams (111-113), and the system comprises means (C) for indicating to terminals (111-113) that they may or may not transmit to the central node (C). Based upon certain criteria, two or more terminals (Si-SN) located in different receive beams (111-113) of the main node (C) may be given permission to transmit to the central node simultaneously. Suitably, two or more terminals which are given permission to transmit simultaneously do so using the same frequency, or the same code or the same time slot.
Abstract:
A sparse array antenna is disclosed. The antenna comprises series-fed antenna array columns tuned to a respective transmit and receive frequency. The transmitting and receiving radiation elements are formed with a given distance between each transmitting radiator element and each receiving radiator element, and the series-fed antenna columns are arranged in parallel, perpendicular to a symmetry line forming a symmetric interleaved transmit/receive array. Furthermore the receiving array columns operate as parasitic elements in a transmit mode and transmitting array columns operate as a parasitic elements in a receive mode, thereby reducing creation of grating lobes. The created sparse array antenna may further be arranged to be scanable to also provide reduced sidelobes entering visual space when scanning the main radiation lobe from an off boresight direction. Typically the series-fed array columns may be formed as extended ridged slotted wave-guides tuned to a respective transmitting or receiving frequency.
Abstract:
Methods performed by a wireless device, such as a user equipment, operating in a dormant mode comprise performing a measurement on each of a plurality of resources from a predetermined set of resources or demodulating and decoding information from each of a plurality of resources from a predetermined set of resources, such as a set of beams. The methods further include evaluating the measurement or the demodulated and decoded information for each of the plurality of resources against a predetermined criterion, and then discontinuing the performing and evaluating of measurements, or discontinuing the demodulating and decoding and evaluation of information, in response to determining that the predetermined criterion is met, such that one or more resources in the predetermined set of resources are neither measured nor demodulated and decoded. The methods further comprise deactivating receiver circuitry, further in response to determining that the predetermined criterion is met. The method further comprises receiving, in a first downlink subframe, a first Orthogonal Frequency-Division Multiplexing transmission formatted according to a first numerology and receiving, in a second downlink subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology.
Abstract:
An antenna arrangement comprising at least two antenna arrays (M, M', M"), each array comprising a plurality (N) of radiating elements (R) being arranged so as to have at least a plurality of corresponding radiating element positions, wherein for each radiating element there is associated an excitation means (E) comprising a magnitude weight (A) and a delay weight (α), wherein there is a first set (SE) of excitation means (E) associated with a first array (M) providing a first radiation pattern and a second set (SE') of excitation means (E) associated with a second array (M') providing a second radiation pattern. At least two respective excitation means (E) associated with a corresponding radiating element position of at least two respective arrays (M, M', M") have at least two different magnitude weights (A n , A' n , A" n ), and at least two respective excitation means (E) associated with a corresponding radiating element position of at least two respective arrays (M, M', M") have at least two different delay weights (α n , α' n , α" n ). The excitation weights (A n , A' n , A" n ; α n , α' n , α" n ) of the at least first and second sets of excitation means (SE, SE') are selected so that the main beam directions of the at least two antenna arrays essentially coincide and so that at least the magnitude of the correlation coefficient (p) associated with respective signals (S, S') communicated over the at least first and second array (M, M', M") is below 0.7 in a given side-lobe region, or so that the radiation amplitude patterns (P, P') associated with the at least first and second set of excitation means have an envelope with a substantial null-fill difference in a given side-lobe region with regard to the main beam peak.
Abstract translation:一种包括至少两个天线阵列(M,M',M“)的天线装置,每个阵列包括多个(N)个辐射元件(R),其布置成具有至少多个对应的辐射元件位置,其中 对于每个辐射元件,存在包括幅度权重(A)和延迟权重(a)的激励装置(E),其中存在与第一阵列(M)相关联的激励装置(E)的第一组(SE) 提供与提供第二辐射图案的第二阵列(M')相关联的激励装置(E)的第一辐射图案和第二组(SE'),至少两个相应的激励装置(E)与相应的辐射元件 至少两个相应的阵列(M,M',M“)的位置具有至少两个不同的幅度权重(A,N,N,N,A, 以及与至少两个相应的辐射元件位置相关联的至少两个相应的激励装置(E) 数组(M,M',M“)具有至少两个不同的延迟权重(a,n,n,n,n, 。 激励权重(A N n N,A',N“,A”,N“,”N“ 选择所述至少第一和第二组激励装置(SE,SE')的“n”,“n”,以使得至少两个天线阵列的主波束方向 基本上重合,使得在给定的至少第一和第二阵列(M,M',M“)上传送的与相应信号(S,S')相关联的相关系数(p)的至少大小在0.7以下 或者使得与至少第一和第二组激励装置相关联的辐射幅度图(P,P')具有在给定旁瓣区域中相对于 主波束峰值。
Abstract:
The present invention relates to a wireless communication system (C), comprising at least one base station (1 ) in a communication cell (2). The base station (1 ) is equipped with at least one array antenna (3, 32) comprising at least two antenna ports (P1 , P2, P3, P4; P1a, P1 b, P2a, P2b, P3a, P3b, P4a, P4b) which are connected to respective at least two corresponding antenna elements (4, 5, 6, 7; 33, 34, 35, 36), where at leas two of the at least two antenna elements (4, 5, 6, 7; 33, 34, 35, 36) have essentially the same polarization. The array antenna (3, 32) is arranged fo communication via at least two antenna radiation lobes (24, 25, 26, 27), each antenna radiation lobe (24, 25, 26, 27) communicating an information stream to at least one UE (23) (user equipment) in the cell (2). According to a certain aspect of the present invention, in a first mode o operation, the array antenna (3, 32) is arranged for communication via one antenna radiation lobe (24, 25, 26, 27). The present invention also relates to a method for performing said communication.
Abstract:
The invention discloses a repeater device (151, 152, 153) equipped with means for receiving transmissions from a first radio unit (110) at a first site within a system for wireless telecommunications and means for retransmitting those transmissions to a second radio unit at a second site within said system. The means for receiving transmissions are means for receiving MIMO transmissions which have been transmitted from the first radio unit with a certain degree of decorrelation between them, and the means for retransmitting those transmissions are means for MIMO transmissions. The repeater is further equipped with means for increasing the coverage of the system given by the MIMO transmissions before or upon retransmission of the received MIMO transmissions .