System and method for integrating a fiber optic fixed access network and a fiber optic radio access network
First Claim
1. A system for integrating a fiber optic fixed access network and a fiber optic radio access network, wherein a radio base station is divided into a main unit and a plurality of radio units, said main unit comprising a digital baseband component and a digital intermediate frequency processing unit, and the radio units comprising only radio-related components of the base station, the main unit being located remotely from the radio units, said system comprising:
- a plurality of radio units for transmitting and receiving radio unit communications with a plurality of mobile units;
a first passive wavelength multiplexer for transmitting and receiving the radio unit communications with the radio units and fixed access communications with a plurality of fixed access subscribers,wherein the first passive wavelength multiplexer is connected to each of the radio units and to each of the fixed access subscribers using fiber optic connections,wherein each of the radio units transmits and receives the radio unit communications with the first passive wavelength multiplexer using a wavelength that is the same for each of the radio units, andwherein the first passive wavelength multiplexer converts the radio unit communications with each of the radio units into wavelengths that are different for each of the radio units and different from that used to transmit and receive the fixed access communications with the fixed access subscribers prior to passively multiplexing the radio unit communications and the fixed access communications onto a fiber optic communications link;
a second passive wavelength multiplexer connected to the first multiplexer through the fiber optic communications link, wherein the radio unit communications and the fixed access communications are transmitted and received together between the first passive wavelength multiplexer and the second passive wavelength multiplexer through the fiber optic fixed access network using the different wavelengths; and
at least one main unit, connected to the second passive wavelength multiplexer, for transmitting and receiving the radio unit communications with the second passive wavelength multiplexer and with a radio network.
1 Assignment
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Accused Products
Abstract
A system and method are described for integrating a fiber optic fixed access network and a fiber optic radio access network. At least one radio unit transmits and receives communications with at least one mobile unit. A first multiplexer transmits and receives the communications with the at least one radio unit and fixed access communications with at least one fixed access subscriber. The first multiplexer is connected to each of the at least one radio unit and to each of the at least one fixed access subscriber using fiber optic connections. Each of the at least one radio unit transmits and receives the communications with the first multiplexer using a wavelength that is different for each of the at least one radio unit and different from that used to transmit and receive the fixed access communications from the at least one fixed access subscriber. The communications and the fixed access communications are transmitted and received together between the first multiplexer and a second multiplexer through the fiber optic fixed access network using the different wavelengths.
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Citations
21 Claims
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1. A system for integrating a fiber optic fixed access network and a fiber optic radio access network, wherein a radio base station is divided into a main unit and a plurality of radio units, said main unit comprising a digital baseband component and a digital intermediate frequency processing unit, and the radio units comprising only radio-related components of the base station, the main unit being located remotely from the radio units, said system comprising:
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a plurality of radio units for transmitting and receiving radio unit communications with a plurality of mobile units; a first passive wavelength multiplexer for transmitting and receiving the radio unit communications with the radio units and fixed access communications with a plurality of fixed access subscribers, wherein the first passive wavelength multiplexer is connected to each of the radio units and to each of the fixed access subscribers using fiber optic connections, wherein each of the radio units transmits and receives the radio unit communications with the first passive wavelength multiplexer using a wavelength that is the same for each of the radio units, and wherein the first passive wavelength multiplexer converts the radio unit communications with each of the radio units into wavelengths that are different for each of the radio units and different from that used to transmit and receive the fixed access communications with the fixed access subscribers prior to passively multiplexing the radio unit communications and the fixed access communications onto a fiber optic communications link; a second passive wavelength multiplexer connected to the first multiplexer through the fiber optic communications link, wherein the radio unit communications and the fixed access communications are transmitted and received together between the first passive wavelength multiplexer and the second passive wavelength multiplexer through the fiber optic fixed access network using the different wavelengths; and at least one main unit, connected to the second passive wavelength multiplexer, for transmitting and receiving the radio unit communications with the second passive wavelength multiplexer and with a radio network. - View Dependent Claims (2, 3, 4, 5)
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6. A system for integrating a fiber optic fixed access network and a fiber optic radio access network, wherein a radio base station is divided into a main unit and a radio access unit, said main unit comprising a digital baseband component and a digital intermediate frequency processing unit, and the radio access unit comprising only radio-related components of the base station, the main unit being located remotely from the radio access unit, said system comprising:
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a first passive wavelength multiplexer and a second passive wavelength multiplexer, wherein the first passive wavelength multiplexer includes; the radio access unit of the radio base station for transmitting and receiving radio unit user communications with at least one mobile radio unit; a fixed access unit for transmitting and receiving fixed access user communications with fixed access users; and a passive multiplexer unit for passively multiplexing the radio unit user communications and the fixed access user communications onto a fiber optic communications link; and wherein the second passive wavelength multiplexer receives the multiplexed communications from the first multiplexer, passively de-multiplexes the multiplexed communications, and transmits the fixed access user communications to a fixed access network and transmits the radio unit user communications to the remotely located main unit of the radio base station. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method of integrating a fiber optic fixed access network and a fiber optic radio access network, wherein a radio base station is divided into a main unit and a plurality of radio units, said main unit comprising a digital baseband component and a digital intermediate frequency processing unit, and the radio units comprising only radio-related components of the base station, the main unit being located remotely from the radio units, said method comprising the steps of:
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transmitting and receiving radio unit communications between the radio units and a first passive wavelength multiplexer via fiber optic connections, wherein the first passive wavelength multiplexer also transmits and receives fixed access communications with a plurality of fixed access subscribers, and wherein the radio unit communications transmitted and received with each of the radio units are transmitted and received with the first passive wavelength multiplexer using a wavelength that is different for each of the radio units and different from that used to transmit and receive the fixed access communications with the fixed access subscribers; passively multiplexing the radio unit user communications and the fixed access user communications onto a fiber optic communications link in the fixed access network; transmitting and receiving together the radio unit communications and fixed access communications between the first passive wavelength multiplexer and a second passive wavelength multiplexer through the fiber optic fixed access network using the different wavelengths; and transmitting and receiving the radio unit communications between the second passive wavelength multiplexer and at least one main unit connected to the second passive wavelength multiplexer and to a radio network. - View Dependent Claims (13, 14, 15, 16)
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17. A method of integrating a fiber optic fixed access network and a fiber optic radio access network, wherein a radio base station is divided into a main unit and a plurality of radio units, said main unit comprising a digital baseband component and a digital intermediate frequency processing unit, and the radio units comprising only radio-related components of the base station, the main unit being located remotely from the radio units, said method comprising the steps of:
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transmitting and receiving radio unit communications between the radio units and a first passive wavelength multiplexer via fiber optic connections, wherein the first passive wavelength multiplexer also transmits and receives fixed access communications with a plurality of fixed access subscribers, and wherein the radio unit communications transmitted and received with each of the radio units are transmitted and received with the first passive wavelength multiplexer using a wavelength that is the same for each of the radio units; converting, in the first passive wavelength multiplexer, the radio unit communications with each of the radio units into wavelengths that are different for each of the radio units and different from that used to transmit and receive the fixed access communications with the fixed access subscribers; passively multiplexing the radio unit user communications and the fixed access user communications onto a fiber optic communications link in the fixed access network; transmitting and receiving together the radio unit communications and fixed access communications between the first passive wavelength multiplexer and a second passive wavelength multiplexer through the fiber optic fixed access network using the different wavelengths; and transmitting and receiving the radio unit communications between the second passive wavelength multiplexer and at least one main unit connected to the second passive wavelength multiplexer and to a radio network. - View Dependent Claims (18, 19, 20, 21)
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Specification