APPARATUS AND METHOD FOR IMPLEMENTING EFFICIENT REDUNDANCY AND WIDENED SERVICE COVERAGE IN RADIO ACCESS STATION SYSTEM
First Claim
1. A Radio Access Station (RAS) system of a Time Division Duplex (TDD) scheme supporting a predetermined number (M) of Frequency Assignments (FAs) and a predetermined number (K) of sectors, the RAS system comprising:
- a transceiver unit including an (M×
K) number of transceivers and a redundancy transceiver;
a high-power amplifying unit including an (M×
K) number of high-power amplifiers and a redundancy high-power amplifier;
a processor for generating a first switching control signal on sensing a failure of the transceivers and generating a second switching control signal on sensing a failure of the high-power amplifiers; and
a Radio Frequency (RF) switch unit for switching a transmission path to the redundancy transceiver and the redundancy high-power amplifier in response to the first switching control signal, and switching a transmission path to the redundancy high-power amplifier in response to the second switching control signal.
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Accused Products
Abstract
Disclosed is an apparatus and a method for implementing efficient redundancy and an expanded service coverage in a Radio Access Station (RAS) system. In the RAS system, if the main processor unit generates switching control signals in response to the sensed failures on sensing a failure in any of the channel cards and the transceivers or a failure in any of the high-power amplifiers, all supporting M (i.e., the number of FAs equal to or more than three) and K (i.e., the number of sectors equal to or more than three), between the transceivers and the predetermined Time Division Duplex (TDD) switches connected to the antennas, the RF switch unit switches a path based on the generated switching control signals so as to substitute the failed module either by one additional redundancy transceiver per M and K or by one additional redundancy high-power amplifier per M and K. As a result, an efficient N+1 redundancy structure is embodied.
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Citations
28 Claims
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1. A Radio Access Station (RAS) system of a Time Division Duplex (TDD) scheme supporting a predetermined number (M) of Frequency Assignments (FAs) and a predetermined number (K) of sectors, the RAS system comprising:
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a transceiver unit including an (M×
K) number of transceivers and a redundancy transceiver;a high-power amplifying unit including an (M×
K) number of high-power amplifiers and a redundancy high-power amplifier;a processor for generating a first switching control signal on sensing a failure of the transceivers and generating a second switching control signal on sensing a failure of the high-power amplifiers; and a Radio Frequency (RF) switch unit for switching a transmission path to the redundancy transceiver and the redundancy high-power amplifier in response to the first switching control signal, and switching a transmission path to the redundancy high-power amplifier in response to the second switching control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A Radio Access Station (RAS) system of a Time Division Duplex (TDD) scheme supporting a predetermined number (M) of Frequency Assignments (FAs) and a predetermined number (K) of sectors, the RAS system comprising:
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a channel card unit connected to a router via ethernet-based Layer 2 (L2) switching; a transceiver unit for modulating digital data stream provided from the channel card unit into a transmission Radio Frequency (RF) signal, and for demodulating a received RF signal into digital data stream; a high-power amplifier unit for amplifying a signal modulated by the transceiver unit; and a repeater interface for respectively down-converting signals having the first center frequency received from the channel card unit into baseband signals, respectively up-converting the down-converted signals into signals respectively having the center frequencies different from one another, synthesizing the upconverted signals into one signal, and transmitting the synthesized signal to a repeater. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of communications in a Radio Access Station (RAS) system based on a Time Division Duplex (TDD) scheme supporting a predetermined number (M) of Frequency Assignments (FAs) and a predetermined number (K) of sectors, the method comprising the steps of:
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(A-1) sensing a failure of any one among transceivers and high-power amplifiers; (A-2) connecting a receive path to a redundancy transceiver in a case of sensing a failure of any one among the transceivers; and (A-3) switching a transmission path to the redundancy transceiver and a redundancy high-power amplifier in a case of sensing a failure of any one among the transceivers, and switching a transmission path to the redundancy high-power amplifier in a case of sensing a failure of any one among the high-power amplifiers, wherein the RAS system comprises a transceiver unit including an (M×
K) number of the transceivers and the redundancy transceiver; and
a high-power amplifying unit including an (M×
K) number of the high-power amplifiers and the redundancy high-power amplifier. - View Dependent Claims (24)
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25. A method of communications in a Radio Access Station (RAS) system based on a Time Division Duplex (TDD) scheme supporting a predetermined number (M) of Frequency Assignments (FAs) and a predetermined number (K) of sectors, the method comprising the steps of:
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(B-1) down-converting signals having the first center frequency respectively received from a channel card unit into baseband signals, respectively; (B-2) up-converting the baseband signals into signals respectively having the center frequencies different from one another, respectively; and (B-3) synthesizing the up-converted signals into one signal, and transmitting the synthesized signal to a repeater, wherein the RAS system comprises the channel card unit, a transceiver unit, a high-power amplifier unit, and a repeater interface. - View Dependent Claims (26, 27, 28)
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Specification