Enhanced base station and method for communicating through an enhanced distributed antenna system (eDAS)
First Claim
1. A base station configured to:
- communicate through an enhanced distributed antenna system (eDAS) comprising a plurality of geographically-separated antenna nodes wherein each of the antenna nodes have a plurality of antenna elements;
perform physical-layer baseband processing for each of the antenna nodes at a centralized processing location;
cause the antenna nodes to transmit reference signals in accordance with a multiplexing scheme to allow user equipment to perform channel estimation for the antenna elements of any one or more of the antenna nodes; and
cause the antenna nodes to transmit signals having synchronization codes to allow the user equipment to synchronize with the antenna elements of any one or more of the antenna nodes,wherein the synchronization codes are at least one of;
partitioned to include information fields to uniquely identify a paging group, the base station, and the antenna node, andconfigured to have a code structure having a code space that is divided into a plurality of subspaces to allow the user equipment to uniquely identify the paging group, the base station and the antenna node.
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Abstract
Embodiments of an enhanced base station and method for communicating through an enhanced distributed antenna system (eDAS) are generally described herein. The eDAS includes geographically-separated antenna nodes and each of the antenna nodes has a plurality of antenna elements. The base station may perform physical-layer baseband processing for each of the antenna nodes at a centralized processing location, and may cause the antenna nodes to transmit reference signals in accordance with a multiplexing scheme to allow user equipment to perform channel estimation for the antenna elements of any one or more of the antenna nodes. The base station may also cause the antenna nodes to transmit signals having synchronization codes to allow the user equipment to synchronize with the antenna elements of any one or more of the antenna nodes. In some embodiments, the base station may communicate with the antenna nodes over a physical-layer interface.
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Citations
14 Claims
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1. A base station configured to:
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communicate through an enhanced distributed antenna system (eDAS) comprising a plurality of geographically-separated antenna nodes wherein each of the antenna nodes have a plurality of antenna elements; perform physical-layer baseband processing for each of the antenna nodes at a centralized processing location; cause the antenna nodes to transmit reference signals in accordance with a multiplexing scheme to allow user equipment to perform channel estimation for the antenna elements of any one or more of the antenna nodes; and cause the antenna nodes to transmit signals having synchronization codes to allow the user equipment to synchronize with the antenna elements of any one or more of the antenna nodes, wherein the synchronization codes are at least one of; partitioned to include information fields to uniquely identify a paging group, the base station, and the antenna node, and configured to have a code structure having a code space that is divided into a plurality of subspaces to allow the user equipment to uniquely identify the paging group, the base station and the antenna node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An enhanced radio-access network (eRAN) comprising a plurality of base stations, each base station is configured to:
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communicate through an enhanced distributed antenna system (eDAS) comprising a plurality of geographically-separated antenna nodes wherein each of the antenna nodes have a plurality of antenna elements; perform physical-layer baseband processing for the antenna nodes at a centralized processing location; and perform an intra-cell handover between antenna nodes by redirecting physical-layer signals from an initial antenna node to a target antenna node, wherein each base station is further configured to; transmit physical-layer signals to the antenna nodes to cause the antenna nodes to transmit reference signals in accordance with a multiplexing scheme to allow user equipment to perform channel estimation for the antenna elements of any one or more of the antenna nodes; and transmit physical-layer signals to the antenna nodes to cause the antenna nodes to transmit signals having synchronization codes to allow the user equipment to synchronize with the antenna elements of any one or more of the antenna nodes, and wherein the synchronization codes are at least one of; partitioned to include information fields to uniquely identify a paging group, the base station, and the antenna node, and configured to have a code structure having a code space that is divided into a plurality of subspaces to allow the user equipment to uniquely identify the paging group, the base station and the antenna node. - View Dependent Claims (11, 12)
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13. A method for communicating through an enhanced distributed antenna system (eDAS) comprising a plurality of geographically-separated antenna nodes wherein each of the antenna nodes have a plurality of antenna elements, the method comprising:
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performing physical-layer baseband processing for each of the antenna nodes at a centralized processing location; transmitting physical-layer signals to each of the antenna nodes to cause the antenna nodes to transmit reference signals in accordance with a multiplexing scheme to allow user equipment to perform channel estimation for the antenna elements of any one or more of the antenna nodes; transmitting physical-layer signals to each of the antenna nodes to cause the antenna nodes to transmit signals having synchronization codes to allow the user equipment to synchronize with the antenna elements of any one or more of the antenna nodes; and communicating multi-stream transmissions through the antenna nodes in accordance with at least one of a SU-MIMO and MU-MIMO communication technique, wherein the synchronization codes are at least one of; partitioned to include information fields to uniquely identify a paging group, the base station, and the antenna node, and configured to have a code structure having a code space that is divided into a plurality of subspaces to allow the user equipment to uniquely identify the paging group, the base station and the antenna node. - View Dependent Claims (14)
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Specification