Method for transmission and reception of channel status information-reference signal
A state information, transmission channel technology, applied in the direction of pilot signal allocation, transmission path sub-channel allocation, signaling allocation, etc., can solve problems that have not yet been defined
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Embodiment approach 1
[0142] This embodiment relates to a signaling method associated with the number of CSI-RS antenna ports and a signaling method associated with CSI-RS resource allocation.
[0143] First, a signaling method associated with the number of CSI antenna ports will be described.
[0144] According to the present embodiment, cases of 6, 12, 16, and 32 CSI-RS antenna ports can be additionally defined as new candidates for the number of CSI-RS antenna ports that can be transmitted in a single subframe. For example, CSI-RS may be transmitted through 12 antenna ports, and in this case, the CSI-RS antenna port indices may be 15, 16, 17...24, 25, and 26. Alternatively, the CSI-RS may be transmitted through 16 antenna ports, and in this case, the CSI-RS antenna port indexes may be 15, 16, 17...28, 29 and 30.
[0145]In order to indicate one of the addition candidates of the number of CSI-RS antenna ports, an extra capacity of signaling information may be defined and used. For example, the ...
Embodiment approach 1-1
[0163] According to the present embodiment, in the case of a new candidate for the number of CSI-RS antenna ports (for example, 6, 12, 16, 32...), a plurality of antenna ports are classified into a plurality of groups and individually or independently reported to Each group allocates CSI-RS resources. Therefore, the signaling overhead of resource allocation information may be proportional to the number of groups.
[0164] For example, the position of the resource to which the CSI-RS of the antenna port classified into the first group is mapped may be signaled by the first resource allocation information, and may be signaled by the second resource allocation information The position of the resource to which the CSI-RS of the antenna port is mapped. When the third group and the fourth group exist, the positions of the CSI-RS REs may be signaled for each group through different resource allocation information. Here, 5-bit CSI-RS resource signaling information can be used as res...
Embodiment approach 1-2
[0184] According to the present embodiment, in the case of new candidates for the number of CSI-RS antennas (for example, 6, 12, 16, 32...), multiple antenna ports are divided into multiple groups, and only signals about multiple CSI-RS resource allocation information for one of the groups, and CSI-RS resource allocation for the remaining groups can be automatically determined based on a predetermined association rule. That is, it may be expressed that the resource allocation for one of the groups is explicitly signaled, and the resource allocation for the remaining groups is implicitly signaled. Therefore, the signaling overhead of resource allocation information can be maintained regardless of the number of groups.
[0185] When M=6 and K=2, with regard to the first group to which 4 CSI-RS antenna ports belong, the first resource allocation information (for example, resourceConfig parameter) may indicate the CSI reference signal configuration corresponding to 4 as the number...
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