Multiple data services over a distributed antenna system

Abstract

Supporting multiple time division duplexed (TDD) based wireless services or frequency division duplexed (FDD) wireless services on a Distributed Antenna System (DAS). TDD based services use a common clock signal to synchronize the components of the DAS for transmission and reception of TDD signals. The DAS can include a GPS receiver which can extract a timing signal from a GPS signal and distribute the timing signal to any and all components of the DAS to enable synchronization of the components for transmitting and receiving TDD signals. The GPS receiver can be part of the interface that connects a TDD based service to the DAS or separate component of the DAS. The DAS can distribute a reference clock signal to all of the components of the DAS in order to maintain zero frequency shift while manipulating with the carrier frequencies of the various wireless services carried by the DAS.

What is claimed is: 
     
         1 . A wireless system, comprising:
 at least one wireless source coupled to at least one wiring unit, the at least one wireless source providing signals corresponding to a first wireless service over the wireless system;   a plurality of cable runs each including electrical radio frequency conducting media and connecting the at least one wiring unit to a plurality of antenna units, each antenna unit having at least one duplexer and at least one deduplexer, the cable runs connecting the at least one wiring unit to at least one of the antenna units and transferring signals corresponding to at least one wireless service between the at least one wiring unit and at least one of the antenna units;   an interface adapted to connect a second wireless source providing a second wireless service to the wireless system and transfer signals corresponding to the second wireless service over the wireless system; and   an envelope detector connected to the wireless system and adapted to receive a signal corresponding to the wireless service and to produce a timing signal, the timing signal being transferred over the wireless system.   
     
     
         2 . The wireless system of  claim 1 , further comprising the second wireless source connected to the interface. 
     
     
         3 . The wireless system of  claim 2 , wherein the envelope detector is connected to the second wireless source and adapted to transfer the timing signal to the interface. 
     
     
         4 . The wireless system of  claim 3 , wherein the timing signal is transferred over the wireless system to at least one of the antenna units and used by the antenna unit to synchronize an operation of the antenna unit. 
     
     
         5 . The wireless system of  claim 2 , wherein the timing signal is modulated onto a carrier signal and transferred over the wireless system using the carrier signal. 
     
     
         6 . A wireless system, comprising:
 a first combining unit;   a plurality of cable runs each including electrical radio frequency conducting media and connecting the first combining unit to a plurality of antenna units, each antenna unit having at least one duplexer and at least one deduplexer;   the first combining unit including a base station connection capable of connecting a base station to the first combining unit, the first combining unit being capable of transferring signals corresponding to a first wireless service between the base station and at least one of the cable runs;   at least one wireless service access point connected to the first combining unit, the first combining unit being capable of transferring signals corresponding to a second wireless service between the at least one wireless access point and at least one of the cable runs;   a first interface module connected to the wireless service access point and capable of converting a control signal sent from the wireless service access point to an intermediate frequency (IF) control signal and transferring the IF control signal between the wireless service access point and the first combining unit; and   a second combining unit connected to at least one of the cable runs and capable of receiving the IF control signal and converting the IF control signal back to the control signal and transferring the control signal to at least one of the antenna units of the wireless system.   
     
     
         7 . The wireless system of  claim 6 , further comprising a reference clock signal generator connected to the first combining unit and capable of generating a reference clock signal, the first combining unit being capable of receiving the reference clock signal and transmitting the reference clock signal over at least one of the cable runs to at least one of the antenna units. 
     
     
         8 . The wireless system of  claim 7 , wherein the first combining unit is capable of transferring the IF control signal between the first interface module and at least one of the cable runs, and uses the reference clock signal to convert a signal received from the access point corresponding to the second wireless service to an intermediate frequency signal and transfers the intermediate frequency signal over at least one of the cable runs to at least one of the antenna units. 
     
     
         9 . A wireless system comprising:
 at least one wiring unit;   a first wireless source connected to the at least one wiring unit, the first wireless source providing signals corresponding to a first wireless service over the wireless system;   a plurality of antenna units, each antenna unit having at least one duplexer and at least one deduplexer;   a plurality of cable runs each including electrical radio frequency conducting media connecting the at least one wiring unit to the plurality of antenna units and transferring signals corresponding to at least one wireless service between the at least one wiring unit and the antenna units;   a second wireless source;   an interface adapted to connect the second wireless source to provide a second wireless service to the wireless system and transfer signals corresponding to the second wireless service over the wireless system; and   an envelope detector system adapted to produce a timing signal, the timing signal being transferred over the wireless system, wherein the envelope detector system is connected to the second wireless source and adapted to transfer the timing signal to the interface.   
     
     
         10 . A wireless system comprising:
 at least one wireless source connected to a main wiring closet unit, said at least one wireless source producing signals corresponding to a first wireless service over the wireless system;   a remote wiring closet unit connected to the main wiring closet unit, the remote wiring closet unit including at least one combining unit, the at least one combining unit being adapted to transfer signals corresponding to two or more wireless services between the at least one wireless source and at least one cable run to an antenna unit;   at least one cable run connecting the at least one combining unit to at least one antenna unit to transfer the signals corresponding to the first wireless service over the wireless system;   an interface adapted to connect a second wireless service to the wireless system and transfer signals corresponding to the second wireless service over the wireless system; and   an envelope detector system connected to the wireless system and adapted to produce and send a timing signal over the wireless system.   
     
     
         11 . A wireless system according to  claim 10 , wherein the interface is connected to the remote wiring closet unit and adapted to transfer signals corresponding to the second wireless service over the DAS. 
     
     
         12 . A wireless system according to  claim 11 , wherein the interface is connected to the at least one antenna unit and adapted to transfer signals corresponding to the second wireless service over the at least one antenna unit. 
     
     
         13 . A wireless system comprising:
 at least one wireless source coupled to at least one wiring closet unit, said at least one wireless source providing signals corresponding to a first wireless service over the wireless system;   at least one antenna unit comprising at least one duplexer and at least one deduplexer;   at least one cable run connecting the at least one wiring closet unit to at the least one antenna unit and transferring signals corresponding to at least one wireless service between the at least one wiring closet unit and at least one antenna unit;   an interface adapted to connect a second wireless source providing a second wireless service to the wireless system and transfer signals corresponding to the second wireless service over the wireless system; and   an envelope detector connected to the wireless system and adapted to receive a signal corresponding to a wireless service and produce a timing signal, said timing signal being transferred over the wireless system, wherein   the timing signal is modulated onto a carrier signal and transferred over the wireless system to the at least one antenna unit using the carrier signal, and used by the antenna unit to synchronize an operation of the antenna unit.