EP0515610 Claim 6 vs 3GPP TS 25.331: Sample Claim Chart
The content of a report SEPPi generated, shown as delivered. Reports are written in English.
Bibliographic data
- Patent number
- EP0515610
- Title
- Adaptive Power Control for a Spread Spectrum Transmitter
- Inventors
- Donald L. Schilling
- Priority date
- 1990-11-16
- Filing date
- 1990-11-16
- Assignee
- InterDigital Technology Corp
- Standard assessed
- UTRA FDD open loop power control — TS 25.331 §8.5.7 — Any 3GPP Rel-8 compliant UE / Node B
- Target release
- Rel-8 (TS 25.331 v8.25.0, TS 25.211 v8.7.0, TS 25.214 v8.13.0, TS 25.101 v8.17.0, TS 25.133 v8.20.0, TS 25.213 v8.5.0, TS 25.401 v8.2.0, TS 25.215 v8.4.0)
Claim 6 (independent)
A method for adaptive-power control of a spread-spectrum transmitter of a respective one of a plurality of mobile stations operating in a cellular communications network using spread-spectrum modulation, characterized by a base station transmitting, on a continuous basis or on a repetitive periodic basis, a generic spread-spectrum signal and an APC-data signal, used by the plurality of mobile stations to adjust a transmitter-power level of a respective plurality of mobile station transmitters, said method comprising the steps, at each mobile station, of: acquiring (7 and decoding (7 the generic spread-spectrum signal; detecting (7 a received power level of the generic spread-spectrum signal; decoding the APC-data signal as a threshold (7; generating a comparison signal by comparing (7 the received power level to said threshold; and adjusting (7 a transmitter-power level of a transmitter spread-spectrum signal from a respective transmitter responsive to said comparison signal.
Standard under assessment
Rel-8 · TS 25.331 v8.25.0 · TS 25.211 v8.7.0 · TS 25.214 v8.13.0 · TS 25.101 v8.17.0 · TS 25.133 v8.20.0 · TS 25.213 v8.5.0 · TS 25.401 v8.2.0 · TS 25.215 v8.4.0
Primary target: UTRA FDD open loop power control of the UE, as specified in TS 25.331 §8.5.7 (Rel-8), together with the physical-layer, measurement and architecture clauses that the cited sentences rest on — TS 25.214, TS 25.215, TS 25.211, TS 25.213, TS 25.101, TS 25.133 and TS 25.401 — all at the Rel-8 versions listed in the header of the claim chart. The claim requires a cellular network using spread-spectrum modulation, so the OFDM-based LTE and NR specifications and the TDMA-based GSM family are not charted. Within UTRA the FDD paragraph of the clause is read ("For FDD, and prior to PRACH transmission or prior to a transmission in Enhanced Uplink in CELL_FACH state and Idle mode, the UE shall:"), with the stored-value case set aside, so that the UE reads the broadcast values; the TDD paragraphs of the same clause are not charted. Every cited clause is present in Rel-8, the earliest release available for this analysis, so its introduction in an earlier release could not be traced. The wording of every cited clause is the same in Rel-19 apart from a spelling change in TS 25.214 §4.1 ("synchronisation" became "synchronization").
Claim chart
Matching colors mark corresponding elements between the claim and the standard. An underline in a screenshot marks the text the mapping rests on.
A method for adaptive-power control of a spread-spectrum transmitter of a respective one of a plurality of mobile stations operating in a cellular communications network using spread-spectrum modulation, characterized by a base station transmitting, on a continuous basis or on a repetitive periodic basis, a generic spread-spectrum signal and an APC-data signal, used by the plurality of mobile stations to adjust a transmitter-power level of a respective plurality of mobile station transmitters, said method comprising the steps, at each mobile station, of:
Context: the claimed activity is open loop power control of the UE transmitter in UTRA FDD. The Open loop power control procedure sets the output power of the UE transmitter of the UE from values that the Node B of the UTRAN broadcasts. The P-CPICH is broadcast over the entire cell and the values are read from System Information Block type 6, whose blocks are repeated according to the Scheduling information column; the UE then sets the preamble transmission power. The repetitive periodic alternative of the claim has a counterpart in the cited clauses; the continuous alternative has none in the cited FDD clauses.
acquiring (7 and decoding (7 the generic spread-spectrum signal;
In the cell search the UE searches for a cell and determines the downlink scrambling code and the frame synchronisation of that cell; the P-CPICH it acquires is scrambled by the primary scrambling code.
detecting (7 a received power level of the generic spread-spectrum signal;
The UE measures the CPICH_RSCP, the received power on one code measured on the Primary CPICH, that is on the P-CPICH broadcast over the entire cell.
decoding the APC-data signal as a threshold (7;
The UE reads the information elements "Primary CPICH Tx power" and "Constant value" from System Information Block type 6 (or System Information Block type 5 or 5bis when type 6 is not broadcast); the value of the IE Primary CPICH Tx power is the broadcast reference value used in the next row.
generating a comparison signal by comparing (7 the received power level to said threshold; and
The UE calculates Preamble_Initial_Power by combining the measured CPICH_RSCP with the broadcast value of the IE Primary CPICH Tx power, together with the UL interference and the constant value.
adjusting (7 a transmitter-power level of a transmitter spread-spectrum signal from a respective transmitter responsive to said comparison signal.
The UE hands the calculated Preamble_Initial_Power to the physical layer, sets the preamble transmission power to the Commanded Preamble Power and transmits the first preamble with it from the UE transmitter.
Overall assessment
L1–L5 map to the standard.
References
- TS 25.331 — Radio Resource Control (RRC); Protocol specification
- TS 25.214 — Physical layer procedures (FDD)
- TS 25.215 — Physical layer; Measurements (FDD)
- TS 25.211 — Physical channels and mapping of transport channels onto physical channels (FDD)
- TS 25.213 — Spreading and modulation (FDD)
- TS 25.101 — User Equipment (UE) radio transmission and reception (FDD)
- TS 25.133 — Requirements for support of radio resource management (FDD)
- TS 25.401 — UTRAN overall description
this document is a technical essentiality assessment prepared for reference, comparing published patent documents against 3GPP standard specifications. It is not a legal determination or legal advice on the essentiality, validity or infringement of the patent. Before any material decision such as licensing or litigation, obtain a review by a qualified patent attorney or attorney at law.
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