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US 2013/0170355 A1Published application
Method and apparatus for supporting uplink starvation avoidance in a long term evolution system
AssigneeInterDigital Technology Corporation
InventorsJin Wang, Mohammed Sammour, Peter S. Wang, Shankar Somasundaram, Stephen E. Terry
Life of this patent
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Abstract
A method and apparatus for uplink (UL) starvation avoidance includes determining a current buffer status information. The current buffer status information is reported to an evolved Node B (eNB). A grant that includes a determination of a number of tokens a wireless transmit/receive unit (WTRU) may accumulate is received from the eNB.
Claims23
A method for implemented in a wireless transmit/receive unit (WTRU), the method comprising:
- maintaining, at the WTRU, maximum sizes of token buckets for respective radio bearers (RBs);
- maintaining, at the WTRU, current sizes of the token buckets, wherein the current sizes are based on respective token accumulation patterns, wherein token accumulations in the respective token buckets are based on the respective current sizes and maximum sizes, and wherein the current and maximum sizes of each token bucket are based on a prioritized bit rate (PBR);
- determining current buffer status information, wherein the current buffer status information includes (i) the current sizes for the token buckets and (ii) buffer levels associated with the RBs, wherein the buffer levels are indicative of respective amounts of uplink (UL) data for transmission via the RBs;
- transmitting a buffer status report (BSR) responsive to an event, wherein the event comprises one or more buffer levels exceeding or falling below respective thresholds, and wherein the BSR comprises the one or more buffer levels;
- determining that a transmission of a packet of the UL data for transmission via one of the RBs results in the corresponding token bucket of the one RB being a negative token bucket;
- and
- transmitting the packet of the UL data via the one RB.
4 more elements
A wireless transmit/receive unit (WTRU) comprising:
- a receiver;
- a transmitter;
- and
- a processor in communication with the receiver and the transmitter, wherein the processor is configured to:
- maintain, at the WTRU, maximum sizes of token buckets for respective radio bearers (RBs);
- maintain, at the WTRU, current sizes of the token buckets, wherein the current sizes are based on respective token accumulation patterns, wherein token accumulations in the respective token buckets are based on the respective current sizes and maximum sizes, and wherein the current and maximum sizes of each token bucket are based on a prioritized bit rate (PBR);
- determine current buffer status information, wherein the current buffer status information includes (i) the current sizes for the token buckets and (ii) buffer levels associated with the RBs wherein the buffer levels are indicative of respect amounts of uplink (UL) data for transmission via the RBs;
- provide a buffer status report (BSR) responsive to an event, wherein the event comprises one or more buffer levels exceeding or falling below respective thresholds, and wherein the BSR comprises the one or more buffer;
- determine that a transmission of a packet of the UL data for transmission via one of the RBs results in the corresponding token bucket of the one RB being a negative token bucket;
- and
- wherein the processor is configured to:
- transmit the packet of the UL data via the one RB.
9 more elements
Dependencies are inferred from the claim text.