Apparatus and method for allocating resources in a single carrier-frequency division multiple access system
A single-carrier frequency division and resource unit technology, applied in transmission systems, radio transmission systems, electrical components, etc., can solve problems such as deterioration of reception quality and interference
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Embodiment 1
[0050] Exemplary embodiments of the present invention provide a method of turning mirroring on or off according to different mirroring on / off patterns for each cell. For different cells, use different mirroring on / off patterns as much as possible and reduce the probability of mirroring being turned on at the same time in the cell to maximize the effect of inter-cell interference randomization.
[0051] Figure 5A and Figure 5B A method according to an example embodiment of the invention is illustrated. Figure 5A The illustration does not consider hybrid automatic repeat request (HARQ) slot-based mirroring, while 5B illustrates independent mirroring for each HARQ process.
[0052] refer to Figure 5A , there are cell 501 and cell 502 (cell A and cell B). Since intra-subframe hopping is assumed, the hopping period is a slot. On a time slot basis, mirroring is performed at each hop time in cell A in pattern 503 and in cell B in pattern 512 where pattern 503 is ON, ON, ON, ...
Embodiment 2
[0070] Sub-FH inter-band hopping on / off is combined with mirroring on / off, and the position of the RU for data transmission is determined by selecting one of the combinations so that each cell has a different pattern. That is, resources of the total system band are divided into an FH band and an FS band and a channel structure is suggested that provides sufficient frequency hopping gain in the FH band and realizes sufficient usable frequency band in the FS band.
[0071] Figure 9 A channel structure according to a second exemplary embodiment of the present invention is illustrated.
[0072] refer to Figure 9 , the sub-FH bands 901 and 903 are defined on either side of the total frequency band, and the central frequency band between the sub-FH bands 901 and 903 is defined as the FS band 902 . A UE using FS band 902 can hop to sub-FH bands 901 and 903 to obtain sufficient frequency hopping gain. Since the frequencies of the FS band 902 are continuous to maximize the continu...
Embodiment 3
[0092] Figure 12 A channel structure according to a third exemplary embodiment of the present invention is illustrated.
[0093] For which such as Figure 12 A system in which multiple sub-FH bands exist and hopping always occurs between sub-FH bands is shown, suggesting a method of determining mirroring ON / OFF according to a different pattern for each cell. Using different mirroring on / off patterns for different cells reduces the probability of performing mirroring at the same time in different cells, resulting in maximum randomization of inter-cell interference.
[0094] Figure 13 and Figure 14 A method according to a third exemplary embodiment of the present invention is described. Specifically, Figure 13 illustrates a HARQ-independent mirroring method, while Figure 14 A method of performing mirroring on the basis of a HARQ process is illustrated.
[0095] refer to Figure 13 , since it is assumed that both cell 1301 and cell 1311 (cell A and cell B) support in...
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