Method for controlling retransmission of information using state variables in radio communication system
First Claim
1. A method for transmitting information of a radio link control (RLC) layer in a radio communication system, the method comprising:
- transmitting, from a user equipment (UE) to a receiving device, data or control information of the RLC layer;
determining, at the UE, whether the transmission of the data or control information was unsuccessful;
only if the transmission was determined as being unsuccessful, comparing a number of transmissions of the data or control information with a value associated with a maximum number of transmissions;
only if the number of transmissions of the data or control information is less than the value associated with the maximum number of transmissions, repeating the transmitting, the determining, and the comparing operations; and
if the number of transmissions of the data or control information is equal to the value associated with the maximum number of transmission, providing an indication to an upper layer.
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Accused Products
Abstract
A method for re-transmitting data or control information in a radio link control layer relates to determining whether re-transmission will be ended by comparing a number of transmission with a critical value when the transmission of data or control information has successively failed. The retransmission cycle is comprised of the steps in the order of transmitting information, checking the transmission failure with exit, and counting the transmission number with exit. Therefore, the present invention makes any transmission be checked and prevents wasting radio resource which can occur in re-transmitting data or control information in UMTS mobile communication system.
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Citations
26 Claims
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1. A method for transmitting information of a radio link control (RLC) layer in a radio communication system, the method comprising:
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transmitting, from a user equipment (UE) to a receiving device, data or control information of the RLC layer; determining, at the UE, whether the transmission of the data or control information was unsuccessful; only if the transmission was determined as being unsuccessful, comparing a number of transmissions of the data or control information with a value associated with a maximum number of transmissions; only if the number of transmissions of the data or control information is less than the value associated with the maximum number of transmissions, repeating the transmitting, the determining, and the comparing operations; and if the number of transmissions of the data or control information is equal to the value associated with the maximum number of transmission, providing an indication to an upper layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for transmitting information of a radio link control (RLC) layer in a radio communication system, the method comprising:
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comparing a number of transmissions of data or control information of the RLC layer with a value associated with a maximum number of transmissions; only if the number of transmissions of the data or control information is less than the value associated with the maximum number of transmissions, transmitting, from a user equipment (UE) to a receiving device, the data or control information of the RLC layer and determining, at the UE, whether the transmission of the data or control information was unsuccessful; only if the transmission was determined as being unsuccessful, repeating the comparing, the transmitting, and the determining operations; and if the number of transmissions of the data or control information is equal to the value associated with the maximum number of transmission, providing an indication to an upper layer. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A user equipment (UE) for transmitting information in a radio communication system, the UE comprising:
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a radio link control (RLC) layer; and a processor configured to; transmit data or control information of the RLC layer to a receiving device; determine whether the transmission of the data or control information was unsuccessful; compare, only if the transmission was determined as being unsuccessful, a number of transmissions of the data or control information with a value associated with a maximum number of transmissions; repeat, only if the number of transmissions of the data or control information is less than the value associated with the maximum number of transmissions, the transmit, the determine, and the compare operations; and if the number of transmission of the data or control information is equal to the value associated with the maximum number of transmission, provide an indication to an upper layer. - View Dependent Claims (24, 25)
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26. A method for transmitting information in a radio communication system, the method comprising:
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transmitting, from a user equipment (UE) to a receiving device, data, wherein the data is a data type protocol data unit (PDU); determining, at the UE, whether the transmission of the data was unsuccessful before a timer is expired; if the transmission of the data was unsuccessful before the timer is expired, increasing a state variable related to a number of transmissions of the data by 1, wherein the increasing the state variable occurs after the determining; only if the transmission of the data was unsuccessful before the timer is expired, comparing the state variable with a value associated with a maximum number of transmissions; only if the state variable is less than the value associated with the maximum number of transmissions, repeating the transmitting, the determining, the increasing, and the comparing operations; and if the state variable is equal to the value associated with the maximum number of transmissions, transmitting control information related to a Move Receiving Window (MRW) instruction to move a receiving window.
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Specification