Static delay compensation in a telecommunications system
AssigneeCommScope Technologies LLC
InventorKeld Knut Lange
Life of this patent
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Abstract
Certain features relate to compensating for a roundtrip delay caused by a distributed antenna system. A delay unit communicatively coupled to a base station can intercept the delay compensation signaling communicated between the digital baseband unit of the base station and the radio transmitter unit of the base station. The delay unit can adjust the delay compensation signaling by adding to the delay compensation signaling the pre-determined fiber delay caused by the DAS. In some aspects, the delay unit can delay the control words for a base station operating under the Common Public Radio Interface standard. In other aspects, the delay unit can delay the round-trip time measurement message for a base station operating under the Open Base Station Architecture Initiative standard.
Claims20
A system comprising:
- a distributed antenna system for being communicatively coupled to a base station, the distributed antenna system including a head-end unit and one or more remote units communicatively coupled to the head-end unit, the head-end unit being configured to transmit wireless communication data in signals from the base station to the one or more remote units that are configured to wirelessly transmit the wireless communication data to user devices;
- and
- a delay unit communicatively coupled to the base station, the delay unit being configured to introduce, to the base station, a delay for control information included in a frame processed by the base station, the delay corresponding to an increase in a roundtrip delay between the base station and the user devices caused by the distributed antenna system.
A method, comprising:
- receiving an optical signal from a radio transmitter unit of a base station, the optical signal including a first frame including control information and data information;
- generating delayed control information from the control information included in the first transmit frame based on a delay corresponding to a duration of an increase in a roundtrip delay between the base station and user devices caused by a distributed antenna system communicatively coupled to the base station;
- generating second transmit frame by multiplexing the delayed control information and the data information;
- and
- transmitting the second transmit frame to a digital baseband unit of the base station.
A head-end unit, comprising:
- a first interface configured to receive and transmit, with a radio transmitter unit of a base station, signals that include wireless communication data;
- a second interface configured to transmit the wireless communication data from the radio transmitter unit of the base station to one or more remote units of a distributed antenna system;
- and
- a delay unit for being communicatively coupled to a digital baseband unit of the base station and the radio transmitter unit of the base station, the delay unit being configured to introduce, to the base station, a delay corresponding to an increase in a roundtrip delay between the base station and a user device caused by the distributed antenna system by introducing the delay to control information included in a frame processed by the base station.
Dependencies are inferred from the claim text.