Abstract:
A sector switch detection method incorporates two independent, concurrent switch detection processes within a sector switch detection block. A frame-based switch detection process operates over a given single period, while a sliding window-based detection system operates over a selected multiple of periods.
Abstract:
A decision as to whether a mobile terminal (202) has transmitted an ACK, a NACK or a NULL from a received signal at a base station (201) is made by successively eliminating (303, 304, 307) one of the three possible transmitted symbols by sequentially applying decision rules that maximize network throughput by minimizing the sum of the weighted costs of making a decision based on the magnitude of the received signal.
Abstract:
A sector switch detection method incorporates two independent, concurrent switch detection processes within a sector switch detection block. A frame-based switch detection process operates over a given single period, while a sliding window-based detection system operates over a selected multiple of periods.
Abstract:
In a 3GPP standards Release 6 UMTS system, in order to avoid searching at NodeB for a maximum E-DPCCH-associated metric at discrete possible valid index values, or over disjoint possible valid index regions, at the UE the three different sources of information, the fixed number bits that comprise the RSN, TFI and the H-bit components of the E-DPCCH bit field, are mapped so that the decimal equivalents of the possible E-DPCCH indices lie within a continuous range of values.
Abstract:
In the absence of a continuous channel from the mobile terminal (301) that incorporates a CRC in each transmitted frame from which the base station (303) can derive a power control signal for feedback to the mobile station for maintaining the mobile station's pilot Eb/N0 level at a desired target that corresponds to a particular frame error rate, the pilot signal received by the base station from the mobile terminal itself is arranged in a frame format. Each pilot frame is compared with an a prioi known transmitted pilot signal bit pattern to determine whether it has been received in error. In response to a comparison of a received pilot frame with the expected known bit pattern of the pilot frame, an error signal is derived, which in the described embodiment is either a step-up or step-down signal that is fed back to the mobile terminal to increase or decrease its transmitted pilot Eb/N0 level, respectively.
Abstract:
In a 3G cellular network, a Reverse Link Channel Quality Indicator Channel (R-CQICH) may be transmitted on a reverse link (24) to support forward link high-speed data transmissions. Accordingly, the R-CQICH may be utilized to track the quality of the signal path (20) between the wireless unit (18) and the base station (12). The base station (12) may include a CQI component that utilizes a received Channel Quality Indicator (CQI) signal from the wireless unit (18) to generate CQI quality metrics based on the quality of the received signal. Also, the CQI quality metrics may be compared to different thresholds (149) to adjust various system configurations (151) said system configuration (151) may include settings for the R-CQICH. The base station (12) may also provide feedback to the wireless unit (18) with the updated system configurations (151). This technique allows CQI quality metrics to be utilized to adjust system configurations (151) dynamically and enhance the operation of a wireless system (10).
Abstract:
In a 3G cellular network, a Reverse Link Channel Quality Indicator Channel (R-CQICH) may be transmitted on a reverse link (24) to support forward link high-speed data transmissions. Accordingly, the R-CQICH may be utilized to track the quality of the signal path (20) between the wireless unit (18) and the base station (12). The base station (12) may include a CQI component that utilizes a received Channel Quality Indicator (CQI) signal from the wireless unit (18) to generate CQI quality metrics based on the quality of the received signal. Also, the CQI quality metrics may be compared to different thresholds (149) to adjust various system configurations (151) in the base station (12). The base station (12) may also provide feedback to the wireless unit (18) with the updated system configurations. This technique allows CQI quality metrics to be utilized to adjust system configurations (151) dynamically and enhance the operation of a wireless system (10).