Advanced multi-sensor processing
First Claim
1. A method for detecting signal information in a wireless communication network having a number of nodes for communication, said method comprising:
- each of a plurality of receiving nodes converting a superposition of signals received from a plurality of transmitting nodes to produce soft complex signal information, said plurality of receiving nodes being partitioned into multiple groups;
collecting soft complex signal information associated with said plurality of receiving nodes over a transport network;
jointly detecting said signal information in the wireless communication network from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information;
wherein said collecting soft complex signal information comprises collecting, for each group, soft complex signal information associated with the receiving nodes of the group, and said jointly detecting comprises performing, for each group. joint detection of signal information based on the collected soft complex signal information associated with the group;
wherein said collecting, for each group, soft complex signal information associated with the receiving nodes of the group comprises exchanging soft complex signal information between the receiving nodes of the group.
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Accused Products
Abstract
Each receiving node (120) of a plurality of receiving nodes (120-1, 120-2 and 120-3) such as base stations in a wireless network converts a superposition of signals received from a plurality of transmitting nodes such as mobile terminals (10) to produce soft complex signal information. The soft complex signal information associated with the considered plurality of receiving nodes are collected, for example in a central node (130) and jointly detect signal information transmitted from at least a subset of the plurality of transmitting nodes (10) based on the collected soft complex signal information. The collected soft signal information generally retains phase and amplitude information, and the transmitted signals are preferably detected in a joint detection process based on a complex channel representation and collected soft signal information. In a truly distributed realization, adjacent receiving nodes or base stations exchange soft complex signal information with each other, thus forming at least partially overlapping groups for distributed collection of information, detection and subsequent decoding in each base station.
51 Citations
31 Claims
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1. A method for detecting signal information in a wireless communication network having a number of nodes for communication, said method comprising:
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each of a plurality of receiving nodes converting a superposition of signals received from a plurality of transmitting nodes to produce soft complex signal information, said plurality of receiving nodes being partitioned into multiple groups; collecting soft complex signal information associated with said plurality of receiving nodes over a transport network; jointly detecting said signal information in the wireless communication network from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information; wherein said collecting soft complex signal information comprises collecting, for each group, soft complex signal information associated with the receiving nodes of the group, and said jointly detecting comprises performing, for each group. joint detection of signal information based on the collected soft complex signal information associated with the group; wherein said collecting, for each group, soft complex signal information associated with the receiving nodes of the group comprises exchanging soft complex signal information between the receiving nodes of the group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16)
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12. A method for detecting signal information in a wireless communication network having a number of nodes for communication, said method comprising:
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each of a plurality of receiving nodes convening a superposition of signals received from a plurality of transmitting nodes to produce soft complex signal information, said plurality of receiving nodes being partitioned into multiple groups; collecting soft complex signal information associated with said plurality of receiving nodes over a transport network; jointly detecting said signal information in the wireless communication network from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information; wherein said collecting soft complex signal information comprises collecting, for each group, soft complex signal information associated with the receiving nodes of the group, and said jointly detecting comprises performing, for each group, joint detection of signal information based on the collected soft complex signal information associated with the group; further comprising the steps of; generating, for each group, decoded signal information; transporting, for each group, corresponding decoded signal information to a combining point for combining multiple copies of the same decoded signal information.
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13. A method for detecting signal information in a wireless communication network having a number of nodes for communication, said method comprising:
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each of a plurality of receiving nodes converting a superposition of signals received from a plurality of transmitting nodes to produce soft complex signal information, said plurality of receiving nodes being partitioned into multiple groups; collecting soft complex signal information associated with said plurality of receiving nodes over a transport network; jointly detecting said signal information in the wireless communication network from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information; wherein said collecting soft complex signal information comprises collecting, for each group, soft complex signal information associated with the receiving nodes of the group, and said jointly detecting comprises performing, for each group, joint detection of signal information based on the collected soft complex signal information associated with the group; further comprising performing iterative detection of signal information in the wireless communication network based on distributed successive cancellation of currently detected signal information from soft complex signal information.
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14. A method for detecting signal information in a wireless communication network having a number of nodes for communication, said method comprising:
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each of a plurality of receiving nodes converting a superposition of signals received from a plurality of transmitting nodes to produce soft complex signal information; collecting soft complex signal information associated with said plurality of receiving nodes over a transport network; jointly detecting said signal information in the wireless communication network from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information; each receiving node attempting to detect signal information based on its own soft complex signal information and, if detection of signal information from at least a subset of said transmitting nodes is successful, determining residual soft complex signal information after cancellation of currently detected signal information; collecting residual soft complex signal information and currently detected signal information; and jointly detecting signal information based on the collected residual soft complex signal information and currently detected signal information.
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15. A system for detecting signal information in a wireless communication network having a number of nodes for communication, said system comprising:
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a plurality of receiving nodes, each configured for converting a superposition of signals received from a plurality of transmitting nodes to produce soft complex signal information, said plurality of receiving nodes being partitioned into multiple groups; means for collecting soft complex signal information associated with said plurality of receiving nodes over a transport network; and means for jointly detecting said signal information in the wireless communication network from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information; wherein said means for collecting soft complex signal information comprises means for collecting, for each group, soft complex signal information associated with the receiving nodes of the group; wherein said means for jointly detecting comprises means for performing, for each group, joint detection based on the collected soft complex signal information associated with the group; and wherein said means for collecting, for each group, soft complex signal information associated with the receiving nodes of the group comprises means for exchanging soft complex signal information between the receiving nodes of the group. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A system for detecting signal information in a wireless communication network having a number of nodes for communication, said system comprising:
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a plurality of receiving nodes, each configured for converting a superposition of signals received from a plurality of transmitting nodes to produce soft complex signal information, said plurality of receiving nodes being partitioned into multiple groups; means for collecting soft complex signal information associated with said plurality of receiving nodes over a transport network; and means for jointly detecting said signal information in the wireless communication network from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information; wherein said means for collecting soft complex signal information comprises means for collecting, for each group, soft complex signal information associated with the receiving nodes of the group; wherein said means for jointly detecting comprises means for performing, for each group, joint detection based on the collected soft complex signal information associated with the group; and further comprising; means for generating, for each group, decoded signal information; and means for transporting, for each group, corresponding decoded signal information to a combining unit for combining multiple copies of the same decoded signal information.
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30. A system for detecting signal information in a wireless communication network having a number of nodes for communication, said system comprising:
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a plurality of receiving nodes, each configured for converting a superposition of signals received from a plurality of transmitting nodes to produce soft complex signal information, said plurality of receiving nodes being partitioned into multiple groups; means for collecting soft complex signal information associated with said plurality of receiving nodes over a transport network; and means for jointly detecting said signal information in the wireless communication network from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information; wherein said means for collecting soft complex signal information comprises means for collecting, for each group, soft complex signal information associated with the receiving nodes of the group; wherein said means for jointly detecting comprises means for performing, for each group, joint detection based on the collected soft complex signal information associated with the group; and further comprising means for performing iterative detection of signal information in the wireless communication network based on distributed successive cancellation of currently detected signal information from soft complex signal information.
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31. A system for detecting signal information in a wireless communication network having a number of nodes for communication, said system comprising:
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a plurality of receiving nodes, each configured for converting a superposition of signals received from a plurality of transmitting nodes to produce soft complex signal information; means for collecting soft complex signal information associated with said plurality of receiving nodes over a transport network; and means for jointly detecting said signal information in the wireless communication network from at least a subset of said plurality of transmitting nodes based on the collected soft complex signal information; means, in each receiving node, for attempting to detect signal information based on its own soft complex signal information and for determining, if detection of signal information from at least a subset of said transmitting nodes is successful, residual soft complex signal information after cancellation of currently detected signal information; means for collecting residual soft complex signal information and currently detected signal information; and means for jointly detecting signal information based on the collected residual soft complex signal information and currently detected signal information.
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Specification