Network device and method thereof
First Claim
1. A network device for joint decoding of received signals in a cellular wireless communication system comprising a plurality of spatially distributed base stations interconnected to said network device by at least one backhaul interface having a round-trip delay being larger than a transmission interval for a Hybrid Automatic Repeat Request (HARQ) cycle of a HARQ algorithm employed by the cellular wireless communication system, said network device comprising:
- a memory storing instructions; and
a processor coupled to the memory to execute the instructions to;
receive a plurality of baseband signals (BBSs) corresponding to uplink signals received by said plurality of base stations in uplink radio links, said uplink signals being associated with a plurality of uplink transmissions (ULTs) from a user device, said plurality of uplink transmissions including a first uplink transmission (ULT) that occurred in a cycle of said HARQ algorithm and a second uplink transmission (ULT) that occurred in a cycle of said HARQ algorithm subsequent to the cycle in which said first uplink transmission occurred; and
decode said second uplink transmission (ULT) from said user device by combining said plurality of baseband signals (BBSs).
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Accused Products
Abstract
The present invention relates to a network device (1) for joint decoding of received signals in a cellular wireless communication system (50) comprising a plurality of spatially distributed base stations (10) interconnected to said network device (1) by means of at least one backhaul interface having a round-trip delay being larger than a transmission interval for a HARQ cycle of a HARQ algorithm employed by the cellular wireless communication system (50), said network device (1) comprising a processor ( ) adapted to: receive a plurality of baseband signals (BBSs) corresponding to uplink signals received by said plurality of base stations (10) in uplink radio links, said uplink signals being associated with an uplink transmission (ULT) from a user device (20); and decode said uplink transmission (ULT) from said user device (20) by combining said plurality of baseband signals (BBSs).
27 Citations
17 Claims
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1. A network device for joint decoding of received signals in a cellular wireless communication system comprising a plurality of spatially distributed base stations interconnected to said network device by at least one backhaul interface having a round-trip delay being larger than a transmission interval for a Hybrid Automatic Repeat Request (HARQ) cycle of a HARQ algorithm employed by the cellular wireless communication system, said network device comprising:
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a memory storing instructions; and a processor coupled to the memory to execute the instructions to; receive a plurality of baseband signals (BBSs) corresponding to uplink signals received by said plurality of base stations in uplink radio links, said uplink signals being associated with a plurality of uplink transmissions (ULTs) from a user device, said plurality of uplink transmissions including a first uplink transmission (ULT) that occurred in a cycle of said HARQ algorithm and a second uplink transmission (ULT) that occurred in a cycle of said HARQ algorithm subsequent to the cycle in which said first uplink transmission occurred; and decode said second uplink transmission (ULT) from said user device by combining said plurality of baseband signals (BBSs). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for joint decoding of received signals in a cellular wireless communication system comprising a plurality of spatially distributed base stations interconnected to a network device by at least one backhaul interface having a round-trip delay being larger than a transmission interval for a HARQ cycle of a HARQ algorithm employed by the cellular wireless communication system, the method comprising:
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receiving a plurality of baseband signals (BBSs) corresponding to uplink signals received by said plurality of base stations in uplink radio links, said uplink signals being associated with a plurality of uplink transmissions (ULTs) from a user device, said plurality of uplink transmissions including a first uplink transmission (ULT) that occurred in a cycle of said HARQ algorithm and a second uplink transmission (ULT) that occurred in a cycle of said HARQ algorithm subsequent to the cycle in which said first uplink transmission occurred; and decoding said uplink transmission (ULT) from said user device by combining said plurality of baseband signals (BBSs). - View Dependent Claims (16)
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17. A network device for joint decoding of received signals in a cellular wireless communication system comprising a plurality of spatially distributed base stations interconnected to said network device by at least one backhaul interface having a round-trip delay being larger than a transmission interval for a Hybrid Automatic Repeat Request (HARQ) cycle of a HARQ algorithm employed by the cellular wireless communication system, said network device comprising:
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a memory storing instructions; and a processor coupled to the memory to execute the instructions to; receive a plurality of baseband signals (BBSs) corresponding to uplink signals received by said plurality of base stations in uplink radio links, said uplink signals being associated with an uplink transmission (ULT) from a user device; and decode said uplink transmission (ULT) from said user device by combining baseband signals, among the plurality of baseband signals, that correspond to uplink signals for previous n−
1 HARQ transmissions and a baseband signal, among the plurality of baseband signals, that corresponds to an uplink signal for n-th HARQ transmission associated with said serving base station from said user device.
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Specification