Allocation and logical to physical mapping of scheduling request indicator channel in wireless networks
AssigneeTexas Instruments Incorporated
InventorsPierre Bertrand, Zukang Shen, Tarik Muharemovic
Life of this patent
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Abstract
A method for allocating resources for a scheduling request indicator (SRI) is disclosed. An SRI cycle period for use by user equipment (UE) within a cell is transmitted from a NodeB in a cell to UE within the cell. The NodeB transmits a specific SRI subframe offset and an index value to the particular UE within the cell. The specific SRI subframe offset and the index value enable the UE to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number for the UE to use as a unique physical resource for an SRI in the physical uplink control channel (PUCCH).
Claims4
A method of transmitting a scheduling request indicator (SRI) comprising:
- receiving an SRI configuration index ISR from a user equipment (UE) for use by a base station within a cell;
- determining an SRI periodicity SRIperiodicity and a SRI subframe offset SRIsubframe offset from the SRI configuration index ISR for use by user equipment (UE)within a cell;
- transmitting the SRI periodicity SRIperiodicity and the SRI subframe offset SRlsubframe for use by user equipment (UE) within a cell;
- wherein the SRI is transmitted on a two-state SR channel.
A device for transmitting a scheduling request indicator (SRI) comprising:
- a processor operable to execute instructions, coupled to a memory containing instructions for the processor;
- a radio receiver and a transmitter coupled to the processor;
- wherein the receiver is operable to:
- receive an SRI configuration index ISR from a user equipment (UE) to a node;
- wherein the processor is operable to:
- determinine a SRI periodicity SRIperiodicity and a SRI subframe offset SRIsubframe offset from the SRI configuration index ISR;
- wherein the transmitter is operable to:
- transmit the SRI periodicity SRIperiodicity and the SRI subframe offset SRIsubframe;
- wherein the SRI is transmitted on a two-state SR channel.
Dependencies are inferred from the claim text.