Distributed processing in a centralized radio access network
First Claim
1. A centralized radio access network (C-RAN), comprising:
- a media access control (MAC) scheduler; and
a fronthaul physical layer coordinator positioned between the MAC scheduler and a plurality of remote units, the fronthaul physical layer coordinator including a fronthaul physical layer scheduler for determining at least one remote unit of the plurality of remote units to serve a mobile device, wherein the fronthaul physical layer coordinator is configured for formulating an allocation of physical layer processing between the plurality of remote units and a baseband processing unit based on resources selected by the fronthaul physical layer scheduler and the MAC scheduler for serving the mobile device.
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Accused Products
Abstract
Certain features relate to a centralized radio access network (C-RAN) that can flexibly and dynamically allocate protocol layer processing among baseband processing units and remote units. A C-RAN can be configured to include a media access control (“MAC”) scheduler and a fronthaul physical layer coordinator. The fronthaul physical layer coordinator can include a fronthaul physical layer scheduler, which can allocate spatial resources by determining the specific remote unit(s) that should serve a given mobile device. The MAC scheduler can allocate time/frequency resources to user devices communicating with the remote units. The fronthaul physical layer coordinator or the MAC scheduler can also determine the optimal transmission modes remote units can use to serve the user devices.
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Citations
19 Claims
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1. A centralized radio access network (C-RAN), comprising:
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a media access control (MAC) scheduler; and a fronthaul physical layer coordinator positioned between the MAC scheduler and a plurality of remote units, the fronthaul physical layer coordinator including a fronthaul physical layer scheduler for determining at least one remote unit of the plurality of remote units to serve a mobile device, wherein the fronthaul physical layer coordinator is configured for formulating an allocation of physical layer processing between the plurality of remote units and a baseband processing unit based on resources selected by the fronthaul physical layer scheduler and the MAC scheduler for serving the mobile device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless distribution system, comprising:
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a baseband pool for transceiving signals with a backhaul network, the baseband pool including a media access control (MAC) scheduler; remote units configured for providing wireless signal coverage for mobile devices in a coverage area; and a fronthaul physical layer coordinator positioned in a fronthaul network between the baseband pool and the remote units, the fronthaul physical layer coordinator including a fronthaul physical layer scheduler for determining at least one remote unit of the plurality of remote units to serve a mobile device, the fronthaul physical layer coordinator being configured for forming an allocation plan for allocating physical layer processing between the plurality of remote units and a baseband processing unit based on resources selected by the fronthaul physical layer scheduler and the MAC scheduler for serving the mobile device. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method, comprising:
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detecting a traffic condition of a centralized radio access network (C-RAN) by a fronthaul physical layer coordinator between a media access control (MAC) scheduler and a plurality of remote radio heads; formulating a physical layer processing allocation plan between the remote radio heads and a baseband processing unit by the fronthaul physical layer coordinator based on resources selected by the fronthaul physical layer coordinator and the MAC scheduler for serving a mobile device; and determining at least one remote radio head of the plurality of remote radio heads to serve the mobile device by the fronthaul physical layer coordinator. - View Dependent Claims (19)
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Specification