Method, base station, and terminal for notifying and receiving downlink demodulation pilot frequency control signaling

A method for receiving downlink demodulation pilot control signaling, comprising:

• receiving a notification from a base station side that notifying an index of a virtual signaling group or index of a port offset signaling group used when the base station side generates a downlink pilot sequence or maps the generated downlink pilot sequence;
• performing a blind detection on at least one of following information, and obtaining indication information in a downlink grant control information (DL_Grant):
• a UE-specific or common high layer signaling;
• antenna indication information of the DL_Grant;
• new data indication information in a disable transport block (TB) signaling in the DL_Grant;
• scrambling indication information in the DL_Grant;
• an aggregation level of the DL_Grant in a UE-specific or common search space;
• a relative position, in the UE-specific or common search space, of a first control channel element of the DL_Grant in the UE-specific or common search space;
• a subframe number where the DL_Grant is located in the UE-specific or common search space;
• and
• a system frame number where the DL_Grant is located in the UE-specific or common search space;
• and
• obtaining an index of a virtual signaling group or index of a port offset signaling group used when the base station side generates a downlink pilot sequence or maps the generated downlink pilot sequence according to indication information in a DL_Grant obtained through the blind detection;
• wherein,
• a virtual signaling parameter set in the virtual signaling group comprises one or more virtual identities (ID) or virtual scrambling indication information.

A base station, comprising hardware performing instructions stored in a non-transitory computer readable medium which executes steps in following modules:

• a generating and mapping module and a notifying module, wherein:
• the generating and mapping module is configured to generate a downlink pilot sequence and/or map a generated downlink pilot sequence;
• the notifying module is configured to notify the user equipment (UE) side of the index of a virtual signaling group or index of port offset signaling group used when the base station side generates a downlink pilot sequence or maps a generated downlink pilot sequence through at least one of following information:
• a UE-specific or common high layer signaling;
• antenna indication information of a downlink grant control information (DL_Grant);
• new data indication information in a disable transport block (TB) signaling in the DL_Grant;
• scrambling indication information in the DL_Grant;
• an aggregation level of the DL_Grant in a UE-specific or common search space;
• a relative position, in the UE-specific or common search space, of a first control channel element of the DL_Grant in the UE-specific or common search space;
• a subframe number where the DL_Grant is located in the UE-specific or common search space;
• and
• a system frame number where the DL_Grant is located in the UE-specific or common search space;
• wherein,
• a virtual signaling parameter set in the virtual signaling group comprises one or more virtual identities (ID) or virtual scrambling indication information.

A user equipment, comprising hardware performing instructions stored in a non-transitory computer readable medium which executes steps in following modules:

• a detecting module and a selecting module, wherein:
• the detecting module is configured to receive a notification from a base station side that notifying an index of a virtual signaling group or index of a port offset signaling group used when the base station side generates a downlink pilot sequence or maps the generated downlink pilot sequence, and obtain indication information in a downlink grant control information (DL_Grant) by performing a blind detection on at least one of following information:
• a UE-specific or common high layer signaling;
• antenna indication information of DL_Grant;
• new data indication information in a disable transport block (TB) signaling in the DL_Grant;
• scrambling indication information in the DL_Grant;
• an aggregation level of the DL_Grant in a UE-specific or common search space;
• a relative position, in the UE-specific or common search space, of a first control channel element of the DL_Grant in the UE-specific or common search space;
• a subframe number where the DL_Grant is located in the UE-specific or common search space;
• and
• a system frame number where the DL_Grant is located in the UE-specific or common search space;
• the selecting module is configured to obtain an index of a virtual signaling group or index of a port offset signaling group used when the base station side generates a downlink pilot sequence or maps a generated downlink pilot sequence according to the indication information in the DL_Grant obtained by the detecting module;
• wherein,
• a virtual signaling parameter set in the virtual signaling group comprises one or more virtual identities (ID) or virtual scrambling indication information.