Apparatus and method for allocating resources in a single carrier-frequency division multiple access system
A single-carrier frequency division and resource allocation technology, applied in transmission systems, radio transmission systems, electrical components, etc., can solve problems such as cell AUE interference, deterioration of reception quality, and inability to move
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Embodiment 1
[0049] Embodiment 1 provides a method for turning mirroring on or off according to different mirroring on / off patterns for each cell. Using as many different mirroring on / off patterns for different cells as possible and reducing the possibility of mirroring being on in a cell at the same time maximizes the effect of randomizing inter-cell interference.
[0050] Figure 5A and Figure 5B A method according to a first embodiment of the invention is shown. Figure 5A shows slot-based mirroring regardless of HARQ, Figure 5B Separate images for each HARQ process are shown.
[0051] refer to Figure 5A , there are cells 501 and 502 (cell A and cell B). When intra-subframe hopping is assumed, the hopping period is a slot. On a time slot basis, mirroring is performed at each hop time in the pattern 503 of on, on, on, off, on, off, off, off... in cell A, and in cell B on the basis of A pattern 512 of open, close, open, open, close, close, open, open... performs mirroring at eac...
Embodiment 2
[0071] Sub-FH inter-band hopping on / off is combined with mirroring on / off, and the position of the RU used for data transmission is determined by selecting one combination so that each cell has a different pattern. That is, resources of the entire system frequency band are divided into an FH band and an FS band, and a channel structure providing sufficient frequency hopping gain in the FH band and obtaining a sufficient usable frequency band in the FS band is disclosed.
[0072] Figure 9 A channel structure according to a second embodiment of the present invention is shown.
[0073] refer to Figure 9 , sub-FH bands 901 and 903 are defined on both sides of the entire frequency band, and the central frequency band between the sub-FH bands 901 and 903 is defined as an FS band 902 . A UE using FS band 902 can hop to sub-FH bands 901 and 903 to obtain sufficient frequency hopping gain. Because the frequencies of FS band 902 are contiguous to maximize contiguous frequency alloc...
Embodiment 3
[0093] Figure 12 A channel structure according to a third embodiment of the present invention is shown.
[0094] For such as Figure 12 The system shown in which there are multiple sub-FH bands and hopping always occurs between sub-FH bands discloses 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 possibility of performing mirroring in different cells at the same time, resulting in randomization that maximizes inter-cell interference.
[0095] Figure 13 and Figure 14 A method according to a third embodiment of the invention is shown. in particular, Figure 13 shows a HARQ-independent mirroring method, and Figure 14 A method of performing mirroring based on a HARQ process is shown.
[0096] refer to Figure 13 , since it is assumed that both cells 1301 and 1311 (cell A and cell B) support intra-subframe hopping, the hopping time period is a slot. Mirro...
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