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LTE Uplink Physical Channels LTE vs. HSPA





Uplink Physical Channels LTE vs. HSPA
Uplink Control Information (UCI) contains:
􀁺 Channel Quality Information (Channel Quality Indicator - CQI and/or Precoding Matrix Indicator - PMI)
– For HSPA, this is sent on HS-DPCCH.
􀁺 HARQ-ACK (Acknowledgements)
– For HSPA, this is sent on HS-DPCCH.
􀁺 Rank Indication
– For HSPA+, rank information is sent in extended CQI range on HS-DPCCH.
􀁺 Scheduling Request, Buffer Status Report and Power Headroom Report
– For HSPA, scheduling information (SI) is sent in-band on E-DPDCH.
􀁺 Transport Format and Uplink HARQ Information
– For HSPA, the transport format and Uplink HARQ information is sent on E-DPCCH.
􀁺 C-RNTI MAC Control Element
– There is no equivalent information needed in HSPA due to the use of dedicated transport and physical
channels.
UCI may be mapped onto PUSCH or PUCCH.
􀁺 PUSCH can carry user data and Uplink Control Information (UCI).
􀁺 PUCCH carries only the Uplink Control Information (UCI), and is used only when UE is not transmitting
PUSCH.