Patent ID: 9374778
Filing Date: 2016-06-21
CPC Classification: H04W,Y02D

Claim Text:
1. A node for use in a wireless communication system comprising: at least two Transmit chains (Tx-chains) and at least two Receive chains (Rx-chains), each Tx-chain and each Rx-chain comprising an antenna end and a radio end, the antenna end connected to a sector antenna, each sector antenna configured to operate within a certain sector in space, wherein the at least two Tx-chains comprises: each Tx-chain comprising Tx-baseband processing circuitry, a Tx-radio, and a power amplifier connected in series, with the power amplifier connected to one sector antenna; each Tx-chain configured to operate within a total transmit frequency band ftx; each Rx-chain comprising Rx-baseband processing circuitry, an Rx-radio, and a low noise amplifier connected in series, with the low noise amplifier connected to one sector antenna; each Rx-chain being arranged to operate within a total receive frequency band frx; a first switch and filter network function (MSN) arranged across all Tx-chains, the first MSN comprising: the first MSN configured to: wherein the first MSN is arranged across all Tx-chains before the power amplifiers and comprises a first, second, third adaptive filter-splitters, each having an input end and an output end, the output end of which is connected to an input end of at least one of a first, second, and third switch-combiner; wherein the output end of each switch-combiner is connected via the power amplifier to a sector antenna; wherein the adaptive filter-splitters comprise first, second, and third switches and first, second, and third 1-to-2 splitters, respectively; wherein the first adaptive filter-splitter further comprises a first 1-to-3 splitter; each splitter comprising a splitting and filter function; wherein the first switch receives the first radio sector signal from the first Tx-chain; wherein the second switch receives the second radio sector signal from the second Tx-chain; wherein the third switch receives the third radio sector signal from the third Tx-chain, wherein each switch is configured to forward either: wherein the first switch has three positions: A, B, and C; wherein the second and third switches have two positions: A and B; wherein, when the first switch is in the B-position, the Tx-baseband and Tx-radio of the second Tx-chain Tx the first path for the first radio sector signal s wherein both sub frequency bands ftx wherein the second subpath of the first path connects to the power amplifier of the first Tx-chain Tx wherein the third subpath of the first path connects to the power amplifier of the second Tx-chain Tx wherein the third path for the third radio sector signal s wherein the first Tx-chain is configured to operate within the first sub frequency band ftx wherein the power amplifier of the second Tx-chain operates within the second sub frequency band ftx wherein the third Tx-chain Tx