Radio protocol for mobile communication system and method
First Claim
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1. In a wireless communication system that employs a layered radio interface protocol that includes a medium access control (MAC) layer and a radio link control (RLC) layer;
- an apparatus comprising;
a first transmission mode entity adapted to control the transmission of data units between an upper layer and the MAC layer by segmenting and reassembling data units that have no headers;
a second transmission mode entity adapted to control the transmission of data units between the upper layer and the MAC layer by framing and deframing data units and by detecting and discarding data units that contain an error; and
a third transmission mode entity adapted to control the flow of data units between the upper layer and the MAC layer by framing and deframing data units and by error correction.
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Abstract
Radio protocol for a next generation mobile communication system is disclosed including a radio link control layer for connecting to an upper layer through a service access point provided in advance and for connecting to a lower layer through a plurality of logic channels provided in advance. The radio link control layer includes at least one radio link control entity for transmission/reception of data to/from up-link or down-link according to a form of a data transmission mode.
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Citations
23 Claims
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1. In a wireless communication system that employs a layered radio interface protocol that includes a medium access control (MAC) layer and a radio link control (RLC) layer;
- an apparatus comprising;
a first transmission mode entity adapted to control the transmission of data units between an upper layer and the MAC layer by segmenting and reassembling data units that have no headers; a second transmission mode entity adapted to control the transmission of data units between the upper layer and the MAC layer by framing and deframing data units and by detecting and discarding data units that contain an error; and a third transmission mode entity adapted to control the flow of data units between the upper layer and the MAC layer by framing and deframing data units and by error correction. - View Dependent Claims (2, 3, 4, 5, 6)
- an apparatus comprising;
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7. In a wireless communication system that employs a layered radio interface protocol that includes a medium access control (MAC) layer and a radio link control (RLC) layer;
- a method of transferring data units from the upper layer to the MAC layer, the method comprising;
receiving a service data unit from the upper layer at one of at least three transmission mode entities in the RLC layer; processing the service data unit, where processing includes one of; segmenting the service data unit into a plurality of protocol data units using a first transmission mode entity if the service data unit has no header, segmenting the service data unit into a plurality of protocol data units and framing the protocol data units and detecting and discarding protocol data units that contain an error using a second transmission mode entity, and segmenting the service data unit into a plurality of protocol data, framing the protocol data units and correcting a protocol data unit by retransmission of the data unit using a third transmission mode entity, and; transferring a plurality of protocol data units from one of the transmission mode entities in the RLC layer to the MAC layer through one of a plurality of service access points associate with the MAC layer. - View Dependent Claims (8, 9)
- a method of transferring data units from the upper layer to the MAC layer, the method comprising;
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10. In a wireless communication system that employs a layered radio interface protocol that includes a radio resource control (RRC) layer, a medium access control (MAC) layer, and a radio link control (RLC) layer;
- a method of transferring data units from the MAC layer to an upper layer, the method comprising;
receiving a plurality of protocol data units from the MAC layer at one of at least three transmission mode entities in the RLC layer; processing each of the plurality of protocol data units, where processing includes one of; segmenting the service data unit into a plurality of protocol data units, using a first transmission mode entity, if the service data unit has no header, segmenting the service data unit into a plurality of protocol data units and framing the protocol data units and detecting and discarding a protocol data unit, using a second transmission mode entity, if it contains an error, and segmenting the service data unit into a plurality of protocol data, framing the protocol data units and correcting a protocol data unit by retransmission using a third transmission mode entity, and; transferring the service data unit from the one transmission mode entity in the RLC layer to the upper layer through one of a plurality of service access points associate with the RLC layer. - View Dependent Claims (11, 12)
- a method of transferring data units from the MAC layer to an upper layer, the method comprising;
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13. An apparatus for use in a mobile communication system, the apparatus comprising a radio link control (RLC) layer which comprises:
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a transparent mode RLC entity generating a first plurality of protocol data units (first PDUs) from a first service data unit (first SDU) transferred from an upper layer through a transparent service access point, each of the first PDUs having no header; an unacknowledged mode RLC entity generating a second plurality of protocol data units (second PDUs) from a second service data unit (second SDU) transferred from the upper layer through an unacknowledged service access point, each of the second PDUs having a header, wherein the unacknowledged mode RLC entity does not retransmit any of the second PDUs; and an acknowledged mode RLC entity generating a third plurality of protocol data units (third PDUs) from a third service data unit (third SDU) transferred from the upper layer through an acknowledged service access point, each of the third PDUs having a header, wherein the acknowledged mode RLC entity is adapted to retransmit the third PDUs. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification