Method for sending RLC PDU and allocating radio resource in mobile communications system and RLC entity of mobile communications
First Claim
1. A method for transmitting radio link control (RLC) STATUS protocol data units (PDUs) in a mobile communications system, the method comprising:
- receiving, by an RLC entity, an indication of a total size of an RLC PDU from a medium access control (MAC) entity;
prioritizing, by the RLC entity, a transmission of the RLC STATUS PDUs over RLC data PDUs;
constructing the prioritized RLC STATUS PDUs including a data/control (D/C) field, a CTP field, an ACK_SN field, and at least one NACK_SN field in order, the ACK_SN field including current information that is not received; and
transmitting, by the RLC entity, the constructed RLC STATUS PDUs associated with the indicated total size of the RLC PDU corresponding to a size of the RLC STATUS PDUs to a peer RLC entity,wherein the constructed and transmitted RLC STATUS PDUs include only negative acknowledgement information of RLC PDUs, andwherein the ACK_SN field is for the peer RLC entity to indicate previous information that is received.
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Accused Products
Abstract
Disclosed is a transmission of a RLC STATUS PDU using a limited radio resource by MAC and RLC layers in a long term evolution (LTE) system. In case where the MAC entity prioritizes logical channels for allocating the radio resource to each logical channel, the MAC entity is allowed to allocate radio resources based upon the size of a RLC STATUS PDU to be sent from the RLC layer and also the RLC layer is allowed to use the STATUS PDU prior to RLC data PDUs upon using the allocated radio resource, such that RLC protocols can be avoided from coming in a deadlock situation due to a non-transmission of the STATUS PDU.
64 Citations
10 Claims
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1. A method for transmitting radio link control (RLC) STATUS protocol data units (PDUs) in a mobile communications system, the method comprising:
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receiving, by an RLC entity, an indication of a total size of an RLC PDU from a medium access control (MAC) entity; prioritizing, by the RLC entity, a transmission of the RLC STATUS PDUs over RLC data PDUs; constructing the prioritized RLC STATUS PDUs including a data/control (D/C) field, a CTP field, an ACK_SN field, and at least one NACK_SN field in order, the ACK_SN field including current information that is not received; and transmitting, by the RLC entity, the constructed RLC STATUS PDUs associated with the indicated total size of the RLC PDU corresponding to a size of the RLC STATUS PDUs to a peer RLC entity, wherein the constructed and transmitted RLC STATUS PDUs include only negative acknowledgement information of RLC PDUs, and wherein the ACK_SN field is for the peer RLC entity to indicate previous information that is received. - View Dependent Claims (2, 3, 4, 5)
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6. A device configured to transmit radio link control (RLC) STATUS protocol data units (PDUs), the device comprising:
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a medium access control (MAC) entity; and an RLC entity configured to; receive an indication of a total size of an RLC PDU from the MAC entity, prioritize a transmission of the RLC STATUS PDUs over RLC data PDUs, constructing the prioritized RLC STATUS PDUs including a data/control (D/C) field, a CTP field, an ACK_SN field, and at least one NACK_SN field in order, the ACK_SN field including current information that is not received, and transmit the constructed RLC STATUS PDUs associated with the indicated total size of the RLC PDU corresponding to a size of the RLC STATUS PDUs to a peer RLC entity, wherein the constructed and transmitted RLC STATUS PDUs include only negative acknowledgement information of RLC PDUs, and wherein the ACK SN field is for the peer RLC entity to indicate previous information that is received. - View Dependent Claims (7, 8, 9, 10)
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Specification