wireless communication system
A wireless communication system and wireless signal technology, applied in the field of wireless communication systems, can solve the problems of easy shortage of control signal areas 13, insufficient control signal areas 13, increase in number, etc.
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no. 1 Embodiment approach
[0060] Figure 4 The network configuration of the radio communication system according to the first embodiment is shown. This embodiment is an embodiment of a radio communication system conforming to LTE. Therefore, several LTE-specific terms or concepts have emerged. However, it should be noted that this embodiment is just an example, and it can also be applied to a wireless communication system conforming to a communication standard other than LTE.
[0061] Figure 4 The wireless communication system shown in , has a wireless base station 2 (eNB: evolved Node B: evolved Node B), a wireless terminal 3 (UE: User Equipment: user equipment), and the like. In the following description, the radio base station 2 and the radio terminal 3 may be collectively referred to as a radio station.
[0062] The wireless network between the wireless base station 2 and the wireless terminal 3 is called a wireless access network 4 . The wireless base stations 2 are connected through a wired...
no. 2 Embodiment approach
[0161] In the first embodiment, whether the control target of the extended downlink control signal 18 in the extended control signal area 17 is the same frame or next frame. In other words, the boundary between two slots in a subframe serves as a reference line for dividing the control target of the enhanced downlink control signal 18 . On the other hand, in the second embodiment, an example different from that in the first embodiment will be described with respect to the reference line for dividing the control target of the extended downlink control signal 18 .
[0162] according to Figure 12 ~ Figure 13 , an example of the frame structure of the second embodiment will be described.
[0163] Figure 12 This is an example of a frame structure in which, on the time axis, the control target of the enhanced downlink control signal 1a8 is divided by the reference line 1a9 set at a timing different from that of the slot boundary. This reference line can be set at any timing as...
no. 3 Embodiment approach
[0169] In the first embodiment or the second embodiment, the control object of the extended downlink control signal 18 in the extended control signal field 17 is determined based on the arrangement of the extended downlink control signal 18 in the extended control signal field 17 Is it the same frame or the next frame. In contrast, in the third embodiment, the control object of the extended downlink control signal 18 in the extended control signal field 17 is the next frame, and the downlink control signal 15 in the control signal field 13 The control objects of are set to the same frame. That is, the object of control is changed depending on whether it is the downlink control information 15 or the extended downlink control information 18 .
[0170] according to Figure 14 , an example of the frame structure of the third embodiment will be described. exist Figure 14 , two downlink control signals 1a5a and 1a5b are arranged in the control signal region 1a3 of the Nth downl...
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