3rd GPP Physical layer - Measurements (FDD)
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3rd GPP Physical layer - Measurements (FDD)
The structure of the table defining a UE measurement quantity is shown below:
Definition
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Contains the definition of the measurement.
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Applicable for
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States if a measurement shall be possible to perform in Idle mode and/or Connected mode. For connected mode also information of the possibility to perform the measurement on intra-frequency and/or inter-frequency are given.
The following terms are used in the tables:
Idle = Shall be possible to perform in idle mode
Connected Intra = Shall be possible to perform in connected mode on an intra-frequency
Connected Inter = Shall be possible to perform in connected mode on an inter-frequency
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Range/mapping
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Gives the range and mapping to bits for the measurements quantity.
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CPICH RSCP
Definition
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Received Signal Code Power, the received power on one code after de-spreading measured on the pilot bits of the CPICH. The reference point for the RSCP is the antenna connector at the UE.
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Applicable for
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Idle, Connected Intra, Connected Inter
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Range/mapping
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RSCP
Definition
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Received Signal Code Power, the received power on one code after de-spreading measured on the pilot bits of the DPCCH after RL combination. The reference point for the RSCP is the antenna connector at the UE.
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Applicable for
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Connected Intra
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Range/mapping
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ISCP
Note that it is not a requirement that the ISCP shall be possible to report to higher layers. The ISCP is defined in this section because it is included in the definition of SIR.
Definition
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Interference Signal Code Power, the interference on the received signal after de-spreading. Only the non-orthogonal part of the interference is included in the measurement. The reference point for the ISCP is the antenna connector at the UE.
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SIR
Definition
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Signal to Interference Ratio, defined as the RSCP divided by ISCP. The SIR shall be measured on DPCCH after RL combination. The reference point for the SIR is the antenna connector of the UE.
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Applicable for
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Connected Intra
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Range/mapping
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UTRA carrier RSSI
Definition
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Received Signal Strength Indicator, the wide-band received power within the relevant channel bandwidth. Measurement shall be performed on a UTRAN downlink carrier. The reference point for the RSSI is the antenna connector at the UE.
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Applicable for
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Idle, Connected Intra, Connected Inter
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Range/mapping
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GSM carrier RSSI
Definition
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Received Signal Strength Indicator, the wide-band received power within the relevant channel bandwidth. Measurement shall be performed on a GSM BCCH carrier. The reference point for the RSSI is the antenna connector at the UE.
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Applicable for
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Idle, Connected Inter
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Range/mapping
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According to the definition of RXLEV in GSM 05.08.
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CPICH Ec/No
Definition
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The received energy per chip divided by the power density in the band. The Ec/No is identical to RSCP/RSSI. Measurement shall be performed on the CPICH. The reference point for Ec/No is the antenna connector at the UE.
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Applicable for
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Idle, Connected Intra, Connected Inter
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Range/mapping
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Transport channel BLER
Definition
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Estimation of the transport channel block error rate (BLER). The BLER estimation shall be based on evaluating the CRC on each transport block after RL combination. BLER estimation is only required for transport channels containing CRC. In connected mode the BLER shall be possible to measure on any transport channel. If requested in idle mode it shall be possible to measure the BLER on transport channel PCH.
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Applicable for
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Idle, Connected Intra
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Range/mapping
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Physical channel BER
Definition
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The physical channel BER is an estimation of the average bit error rate (BER) before channel decoding of the DPDCH data after RL combination. At most it shall be possible to report a physical channel BER estimate at the end of each TTI for the transferred TrCh's, e.g. for TrCh's with a TTI of x ms a x ms averaged physical channel BER shall be possible to report every x ms.
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Applicable for
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Connected Intra
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Range/mapping
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UE transmitted power
Definition
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The total UE transmitted power on one carrier. The reference point for the UE transmitted power shall be the UE antenna connector.
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Applicable for
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Connected Intra
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Range/mapping
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CFN-SFN observed time difference
Definition
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The CFN-SFN observed time difference to cell is defined as: OFF´38400+ Tm, where:
Tm= TRxSFN - (TUETx-T0), given in chip units with the range [0, 1, …, 38399] chips
TUETx is the time when the UE transmits an uplink DPCCH/DPDCH frame.
T0 is defined in TS 25.211 section 7.1.3.
TRxSFN is time at the beginning of the next received neighbouring P-CCPCH frame after the time instant TUETx-T0in the UE. If the next neighbouring P-CCPCH frame is received exactly at TUETx-T0 then TRxSFN=TUETx-T0 (which leads to Tm=0).
and
OFF=(CFNTx-SFN) mod 256, given in number of frames with the range [0, 1, …, 255] frames
CFNTx is the connection frame number for the UE transmission of an uplink DPCCH/DPDCH frame at the time TUETx.
SFN = the system frame number for the neighbouring P-CCPCH frame received in the UE at the time TRxSFN.
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Applicable for
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Connected Inter, Connected Intra
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Range/mapping
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Time difference is given with the resolution of one chip with the range [0, …, 9830399] chips.
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SFN-SFN observed time difference
Definition
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Type 1:
The SFN-SFN observed time difference to cell is defined as: OFF´38400+ Tm, where:
Tm= TRxSFNj - TRxSFNi, given in chip units with the range [0, 1, …, 38399] chips
TRxSFNj is the time at the beginning of a received neighbouring P-CCPCH frame from cell j.
TRxSFNi is time at the beginning of the next received neighbouring P-CCPCH frame from cell i after the time instant TRxSFNj in the UE. If the next neighbouring P-CCPCH frame is received exactly at TRxSFNj then TRxSFNj= TRxSFNi (which leads to Tm=0).
and
OFF=(SFNj- SFNi) mod 256, given in number of frames with the range [0, 1, …, 255] frames
SFNj = the system frame number for downlink P-CCPCH frame from cell j in the UE at the time TRxSFNj.
SFNi = the system frame number for the P-CCPCH frame from cell i received in the UE at the time TRxSFNi.
Type 2:
The relative timing difference between cell j and cell i, defined as TCPICHRxj - TCPICHRxi, where:
TCPICHRxj is the time when the UE receives one CPICH slot from cell j
TCPICHRxi is the time when the UE receives the CPICH slot from cell i that is closest in time to the CPICH slot received from cell j
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Applicable for
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Type 1: Idle, Connected Intra
Type 2: Idle, Connected Intra, Connected Inter
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Range/mapping
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Type 1: Time difference is given with a resolution of one chip with the range [0, …, 9830399] chips.
Type 2: Time difference is given with a resolution of 0.5 chip with the range [-1279, …, 1280] chips.
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UE Rx-Tx time difference
Definition
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The difference in time between the UE uplink DPCCH/DPDCH frame transmission and the first significant path, of the downlink DPCH frame from the measured radio link. Measurement shall be made for each cell included in the active set.
Note: The definition of "first significant path" needs further elaboration.
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Applicable for
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Connected Intra
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Range/mapping
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Always positive.
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RSSI
Definition
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Received Signal Strength Indicator, the wide-band received power within the UTRAN uplink carrier channel bandwidth in an UTRAN access point. The reference point for the RSSI measurements shall be the antenna connector.
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Range/mapping
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Transmitted carrier power
Definition
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Transmitted carrier power, is the total transmitted power on one carrier from one UTRAN access point. Measurement shall be possible on any carrier transmitted from the UTRAN access point. The reference point for the total transmitted power measurement shall be the antenna connector. In case of Tx diversity the total transmitted power for each branch shall be measured.
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Range/mapping
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Transmitted code power
Definition
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Transmitted code power, is the transmitted power on one carrier, one scrambling code and one channelisation code. Measurement shall be possible on any channelisation code transmitted from the UTRAN access point. The reference point for the transmitted code power measurement shall be the antenna connector. In case of Tx diversity the transmitted code power for each branch shall be measured.
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Range/mapping
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Round trip time
Note: The relation between this measurement and the TOA measurement defined by WG2 needs clarification.
Definition
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Round trip time (RTT), is defined as
RTT = TRX - TTX, where
TTX = The time of transmission of the beginning of a downlink DPCH frame to a UE.
TRX = The time of reception of the beginning (the first significant path) of the corresponding uplink DPCCH/DPDCH frame from the UE.
Note: The definition of "first significant path" needs further elaboration.
Measurement shall be possible on DPCH for each RL transmitted from an UTRAN access point and DPDCH/DPCCH for each RL received in the same UTRAN access point.
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Range/mapping
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