Operating devices in a wireless communication system
The present application relates to methods for operating a wireless communication device ( 20 ). According to an embodiment, the method comprises transmitting, on a wireless link between the wireless communication device ( 20 ) and a further wireless communication device ( 30, 40, 50 ), at least one first signal ( 301 ) using a first polarization ( 501 ), transmitting, on the wireless link, at least one second signal ( 302 ) using a second polarization ( 502 ), and transmitting, on the wireless link, at least one third signal ( 303 ) using a third polarization ( 503 ). The first polarization ( 501 ), the second polarization ( 502 ), and the third polarization ( 503 ) are different from each other. Based on the at least one first signal ( 301 ), the at least one second signal ( 302 ), and the at least one third signal ( 303 ), channels of the wireless link associated with the at least one first signal ( 301 ), the at least one second signal ( 302 ), and the at least one third signal ( 303 ) are sounded.
1. A base station system comprising:
multiple antenna arrangements, each of the antenna arrangements having an array antenna where multiple antenna elements are two-dimensionally or three-dimensionally arranged, wherein each of the multiple antenna elements is a dual or multi polarized antenna element; and
a base station logic coupled to the multiple antenna arrangements,
wherein the base station logic is configured to control at least one of the multiple the antenna arrangements to:
transmit, to one or more user equipments, at least one first downlink signal using a first polarization, at least one second downlink signal using a second polarization, and at least one third downlink signal using a third polarization, wherein each one of the at least one first downlink signal, the at least one second downlink signal, and the at least one third downlink signal carries a corresponding unique identifier, and
receive, from the one or more user equipments, the corresponding unique identifier associated to at least one of the at least one first, second, and third downlink signals,
wherein the first polarization, the second polarization, and the third polarization are different from each other.
2. The base station apparatus according to claim 1 , wherein the first downlink signal is a first synchronization signal, the second downlink signal is a second synchronization signal, and the third downlink signal is a third synchronization signal.
3. The base station apparatus according to claim 1 , wherein at least two of the first polarization, the second polarization, and the third polarization are orthogonal to each other.
4. The base station apparatus according to claim 1 , wherein a corresponding uplink resource for receiving the corresponding unique identifier is assigned to each one of the at least one first signal, the at least one second signal, and the at least one third signal,
wherein the base station logic is further configured to receive, from the user equipment via at least one of the multiple antenna arrangements, received signal power associated to at least one of the at least one first, second, and third signals in the assigned corresponding uplink resource.
5. A method for a base station apparatus comprising multiple antenna arrangements, each of the antenna arrangements having an array antenna where multiple antenna elements are two-dimensionally or three-dimensionally arranged, wherein each of the multiple antenna elements is a dual or multi polarized antenna element, and comprising a base station logic coupled to the multiple antenna arrangements, wherein the method comprises:
transmitting, to one or more user equipments, at least one first downlink signal using a first polarization, at least one second downlink signal using a second polarization, and at least one third downlink signal using a third polarization, wherein each one of the at least one first downlink signal, the at least one second downlink signal, and the at least one third downlink signal carries a corresponding unique identifier, and
receiving, from the one or more user equipments, the corresponding unique identifier associated to at least one of the at least one first, second, and third downlink signals,
wherein the first polarization, the second polarization, and the third polarization are different from each other.
6. The method according to claim 5 , wherein the first downlink signal is a first synchronization signal, the second downlink signal is a second synchronization signal, and the third downlink signal is a third synchronization signal.
7. The method according to claim 5 , wherein at least two of the first polarization, the second polarization, and the third polarization are orthogonal to each other.
8. The method according to claim 5 , wherein a corresponding uplink resource for receiving the corresponding unique identifier is assigned to each one of the at least one first signal, the at least one second signal, and the at least one third signal,
wherein the method further comprises:
receiving, from the user equipment via at least one of the multiple antenna arrangements, received signal power associated to at least one of the at least one first, second, and third signals in the assigned corresponding uplink resource.