Information sending,information determing and relationship determining methods and devices

An information sending system comprising:

• a first sending module, a second sending module and a terminal, wherein
• the first sending module is configured to send M parameter sets via high-layer signaling, wherein M>=1, M is a positive integer, each parameter set comprises quasi-co-location Non-Zero Power (NZP) Channel State Information Reference Signal (CSI-RS) indication information, and the quasi-co-location NZP CSI-RS indication information is used by a terminal to acquire a large-scale characteristic of a channel;
• and
• the second sending module is configured to, when M>1, indicate, via a physical-layer control signaling, parameter set selection information of a subframe on which the physical-layer control signaling is sent;
• the terminal is configured to:
• receive the M parameter sets via the high-layer signaling;
• when M=1, determine quasi-co-location CSI-RS information according to the quasi-co-location NZP CSI-RS indication information;
• or, when M>1, receive the parameter set selection information via physical-layer control signaling, and determining, by the terminal according to the quasi-co-location NZP CSI-RS indication information and the parameter set selection information, quasi-co-location CSI-RS information of a de-Modulation Reference Signal (DMRS) in a subframe on which the physical-layer control signaling is sent.

An information determining device comprising:

• a receiving module, a first determination module and a second determination module, wherein
• the receiving module is configured to receive M parameter sets via high-layer signaling, wherein M>=1, M is a positive integer, each parameter set comprises quasi-co-location Non-Zero Power (NZP) Channel State Information Reference Signal (CSI-RS) indication information, and the quasi-co-location NZP CSI-RS indication information is used by the terminal to acquire a large-scale characteristic of a channel;
• the first determination module is configured to, when M=1, determine quasi-co-location CSI-RS information according to the quasi-co-location NZP CSI-RS indication information;
• and
• the second determination module is configured to, when M>1, receive parameter set selection information via physical-layer control signaling, and determine, according to the quasi-co-location NZP CSI-RS indication information and the parameter set selection information, quasi-co-location CSI-RS information of a de-Modulation Reference Signal (DMRS) in a subframe on which the physical-layer control signaling is sent.