DAS management by radio access network node
Embodiments described herein provide for a distributed antenna system (DAS) including a host unit and a plurality of active antenna units (AAUs). The host unit is configured to send management information to the one or more RAN nodes. The one or more RAN nodes are configured to manage the RF signals based on the management information.
1. A distributed antenna system (DAS) comprising:
a host unit;
a plurality of active antenna units (AAUs) communicatively coupled to the host unit over a respective communication link, the AAUs configured to wirelessly communicate with one or more wireless devices,
wherein the host unit is configured to bi-directionally communicate RAN signals with one or more RAN nodes, the RAN signals including an analog version of an radio frequency (RF) signal modulated with an over-the-air radio access modulation protocol or digital samples corresponding to an RF signal modulated with an over-the-air radio access modulation protocol,
wherein the host unit is configured to convert between the RAN signals and respective transport signals,
wherein the host unit is configured to bi-directionally communicate the transport signals with the plurality of AAUs,
wherein the plurality of AAUs are configured to bi-directionally communicate the transport signals with the host unit,
wherein the plurality of AAUs are configured to convert between the transport signals and the RF signals modulated with the over-the-air radio access modulation protocol, and to transmit and receive the RF signals,
wherein the host unit is configured to send management information to the one or more RAN nodes via an auxiliary interface between the host unit and the one or more RAN nodes, wherein the one or more RAN nodes are configured to manage the RF signals based on the management information.
2. The DAS of claim 1 , wherein the host unit is configured to receive a request for the management information from the one or more RAN nodes, wherein the request is generated by the one or more RAN nodes, wherein the host unit is configured to send the management information in response to the request for the management information.
3. The DAS of claim 1 , wherein the RAN signals are communicated in conformance with the common public radio interface (CPRI) protocol,
wherein the host unit is configured to send the management information via a control channel of a CPRI implemented by the host unit.
4. The DAS of claim 1 , wherein the RAN signals are an analog version of the RF signals,
wherein the host unit is configured to receive the request for management information via an out-of-band signal from the RF signals.
5. The DAS of claim 1 , wherein the auxiliary interface is an antenna integrated services group (AISG) interface.
6. The DAS of claim 1 , wherein the auxiliary interface is a universal serial bus (USB) interface or an Ethernet interface.
7. The DAS of claim 1 , wherein the management information includes one or more of a status of the DAS, performance information related to the DAS, and configuration information for the DAS.
8. The DAS of claim 7 , wherein the configuration information includes one or more of:
whether the DAS is deployed in a star, ring, tree and branch, or daisy-chain topology,
the transmit power level of one or more of the AAUs,
the transmit frequency of one or more of the AAUs,
the receive frequency of one or more of the AAUs,
the transport delay between the host unit and one or more of the AAUs,
the timing of reception,
the timing of transmission, and
a location of one or more of the AAUs,
wherein the status and performance information for the DAS such as a location of a mobile device within range of the DAS, a measured transmit power of a signal transmitted by an AAU, a measured receive power of a signal received at an AAU from a mobile device, a power consumption of one or more AAUs, a temperature of one or more AAUs, and a health of one or more AAUs.
9. A distributed antenna system (DAS) comprising:
a host unit;
a plurality of active antenna units (AAUs) communicatively coupled to the host unit over a respective communication link, the AAUs configured to wirelessly communicate with one or more wireless devices,
wherein the host unit is configured to bi-directionally communicate RAN signals with one or more RAN nodes, the RAN signals including an analog version of an radio frequency (RF) signal modulated with an over-the-air radio access modulation protocol or digital samples corresponding to an RF signal modulated with an over-the-air radio access modulation protocol,
wherein the host unit is configured to convert between the RAN signals and respective transport signals,
wherein the host unit is configured to bi-directionally communicate the transport signals with the plurality of AAUs,
wherein the plurality of AAUs are configured to bi-directionally communicate the transport signals with the host unit,
wherein the plurality of AAUs are configured to convert between the transport signals and the RF signals modulated with the over-the-air radio access modulation protocol, and to transmit and receive the RF signals,
wherein the host unit is configured to receive a command from the one or more RAN nodes, wherein the command is generated by the one or more RAN nodes,
wherein the host unit is configured to adjust operation of the DAS in response to the command.
10. The DAS of claim 9 , wherein the RAN signals are communicated in conformance with the common public radio interface (CPRI) protocol,
wherein the host unit is configured to receive the command via a control channel of a CPRI implemented by the host unit.
11. The DAS of claim 9 , wherein the RAN signals are an analog version of the RF signals,
wherein the host unit is configured to receive the command via an out-of-band signal from the RF signals.
12. The DAS of claim 9 , wherein the host unit is configured to receive the command via an auxiliary interface between the host unit and the one or more RAN nodes.
13. The DAS of claim 12 , wherein the auxiliary interface is an antenna integrated services group (AISG) interface.
14. The DAS of claim 12 , wherein the auxiliary interface is one of a universal serial bus (USB) interface or an Ethernet interface.
15. The DAS of claim 9 , wherein the command includes one or more of a command to:
enable one or more of the AAUs,
disable one or more of the AAUs,
set a transmission power level of one or more of the AAUs,
select an antenna for use at one or more of the AAUs,
set a transmission frequency of one or more of the AAUs,
set a reception frequency of one or more of the AAUs,
set a transport delay between the one or more RAN nodes and one or more of the AAUs, set a timing of transmission,
set a timing of reception, set a location of one or more of the AAUs, and
set a direction for an antenna at one or more of the AAUs.
16. A method for communication between a distributed antenna system (DAS) and an external baseband unit, the method comprising:
at a host unit of the DAS, bi-directionally communicating RAN signals with one or more RAN nodes, the RAN signals including an analog version of an radio frequency (RF) signal modulated with an over-the-air radio access modulation protocol or digital samples corresponding to an RF signal modulated with an over-the-air radio access modulation protocol,
at the host unit, converting between the RAN signals and respective transport signals,
at the host unit, bi-directionally communicating the transport signals with the plurality of AAUs, wherein the plurality of AAUs are configured to convert between the transport signals and the RF signals modulated with the over-the-air cellular modulation protocol, and to transmit and receive the RF signals,
at the host unit, sending management information to the one or more RAN nodes, via an auxiliary interface between the host unit and the one or more RAN nodes, wherein the one or more RAN nodes are configured to manage the RF signals based on the management information.
17. The method of claim 16 , comprising:
at the host unit, receiving a request for the management information from the one or more RAN nodes.
18. The method of claim 16 , wherein bi-directionally communicating the RAN signals includes sending and receiving RAN signals that are communicated in conformance with the common public radio interface (CPRI) protocol,
wherein sending management information includes sending the management information via a control channel of the CPRI.
19. The method of claim 16 , wherein bi-directionally communicating the RAN signals includes sending and receiving analog versions of the RF signals,
wherein sending management information includes sending the management information via an out-of-band signal from the RF signals.
20. The method of claim 16 , wherein the auxiliary interface is an antenna integrated services group (AISG) interface.
21. The method of claim 16 , wherein the auxiliary interface is one of a universal serial bus (USB) interface or an Ethernet interface.
22. The method of claim 16 , wherein sending the management information includes sending one or more of a status of the DAS, performance information related to the DAS, and configuration information for the DAS.
23. The method of claim 22 , wherein the configuration information includes one or more of:
whether the DAS is deployed in a star, ring, tree and branch, or daisy-chain topology,
the transmit power level of one or more of the AAUs,
the transmit frequency of one or more of the AAUs,
the receive frequency of one or more of the AAUs,
the transport delay between the host unit and one or more of the AAUs,
the timing of reception,
the timing of transmission, and
a location of one or more of the AAUs,
wherein the status and performance information for the DAS such as a location of a mobile device within range of the DAS, a measured transmit power of a signal transmitted by an AAU, a measured receive power of a signal received at an AAU from a mobile device, a power consumption of one or more AAUs, a temperature of one or more AAUs, and a health of one or more AAUs.
24. A method for communication between a distributed antenna system (DAS) and an external baseband unit, the method comprising:
at a host unit, bi-directionally communicating RAN signals with one or more RAN nodes, the RAN signals including an analog version of an radio frequency (RF) signal modulated with an over-the-air radio access modulation protocol or digital samples corresponding to an RF signal modulated with an over-the-air radio access modulation protocol,
at the host unit, converting between the RAN signals and respective transport signals,
at the host unit, bi-directionally communicating the transport signals with the plurality of AAUs, wherein the plurality of AAUs are configured to convert between the transport signals and the RF signals modulated with the over-the-air cellular modulation protocol, and to transmit and receive the RF signals,
at the host unit, receiving a command from the one or more RAN nodes, wherein the command is generated by the one or more RAN nodes,
at the host unit, adjusting operation of the DAS in response to the command.
25. The method of claim 24 , wherein bi-directionally communicating the RAN signals includes sending and receiving RAN signals that conform to the common public radio interface (CPRI) protocol,
wherein receiving the command includes receiving the command via an operations and management channel of a CPRI implemented by the host unit.
26. The method of claim 24 , wherein bi-directionally communicating the RAN signals includes sending and receiving analog versions of the RF signals,
wherein receiving the command includes receiving the command via an out-of-band signal from the RF signals.
27. The method of claim 24 , wherein receiving the command includes receiving the command via an auxiliary interface between the host unit and the one or more RAN nodes.
28. The method of claim 27 , wherein the auxiliary interface is an antenna integrated services group (AISG) interface.
29. The method of claim 27 , wherein the auxiliary interface is one of a universal serial bus (USB) interface or an Ethernet interface.
30. The method of claim 24 , wherein adjusting operation of the DAS in response to the command includes one or more of:
enabling one or more of the AAUs,
disabling one or more of the AAUs,
setting a transmission power level of one or more of the AAUs,
selecting an antenna for use at one or more of the AAUs,
setting a transmission frequency of one or more of the AAUs,
setting a reception frequency of one or more of the AAUs,
setting a transport delay between the one or more RAN nodes and one or more of the AAUs,
setting a timing of transmission,
setting a timing of reception,
setting a location of one or more of the AAUs, and
setting a direction for an antenna at one or more of the AAUs.