| 摘要 |
A method for estimating qualities of links between transmitting apparatus and receiving apparatus on respective carrier frequencies in a multi-carrier wireless communication system from measurements made during a scanning interval in which pilot signals can be transmitted from the transmitting apparatus to the receiving apparatus in a plurality of carrier-time bins, each carrier-time bin corresponding to a respective carrier frequency of the multi-carrier system and a respective time slot within the scanning interval. The method comprises: during the scanning interval, making test measurements M in some, but not all, of the carrier-time bins, each test measurement M comprising transmitting a respective signal from the transmitting apparatus to the receiving apparatus in a respective carrier-time bin and measuring a strength of the corresponding signal received by the receiving apparatus; and using the test measurements M to calculate at least one of: a value indicative of a predicted quality of a link between the transmitting apparatus and the receiving apparatus in a carrier-time bin P of the scanning interval in which no test measurement is made during the scanning interval; and a value indicative of a predicted quality of a link between the transmitting apparatus and the receiving apparatus over a period of time within or equal to the scanning interval on a carrier frequency for which no test measurement is made in at least one carrier-time bin P during said period of time. The method uses fewer measurements M than prior art methods and by the use of different test measurement arrangements or patterns, an advantageous balance can be achieved between the number of measurements M required, the amount of processing required and the accuracy of the estimated values. Preliminary measurements and/or measurements related to a speed of a receiving mobile apparatus may also be made and used with the test measurements. The method results may be used in the selection of a transmission carrier frequency and in resource allocation. |
