Method and device for indicating channel state information reference signal resource

A method for indicating a Channel State Information Reference Signal (CSI-RS) resource, comprising:

• receiving, by a User Equipment (UE), a CSI-RS resource indicator issued by an evolved Node B (eNB), the CSI-RS resource indicator being used to indicate a CSI-RS resource that can be used by the UE and pertains to one or more CSI-RS resources configured by the eNB for a plurality of UEs within a cell covered by the eNB;
• and
• performing CSI measurement and feedback according to the CSI-RS resource indicated by the eNB,
• wherein the CSI-RS resource comprises the following resources:
• CSI Process, or Non-Zero Power (NZP) CSI-RS resource, or CSI-RS port(s),
• wherein if each of the one or more CSI-RS resources is a CSI Process, the one or more CSI-RS resources are configured for the plurality of UEs by the eNB in the following manners:
• performing set partitioning on the plurality of UEs to obtain one or more UE sets, and configuring a CSI Process Group containing one or more CSI Processes for each UE set,
• wherein when a plurality of CSI Process Groups are configured for the plurality of UEs, CSI Processes contained in any two of the plurality of configured CSI Process Groups are partially the same or totally different.

An evolved Node B (eNB), comprising:

• a processor;
• and
• a memory for storing instructions executable by the processor,
• wherein the processor is arranged to:
• configure one or more Channel State Information Reference Signal (CSI-RS) resources for a plurality of User Equipments (UEs) within a cell covered by the eNB;
• and
• indicate a CSI-RS resource that can be used by at least one of the plurality of UEs and pertains to the one or more CSI-RS resources,
• wherein the CSI-RS resource comprises the following resources:
• CSI Process, or Non-Zero Power (NZP) CSI-RS resource, or CSI-RS port(s),
• wherein if each of the one or more CSI-RS resources is a CSI Process, the one or more CSI-RS resources are configured for the plurality of UEs by the eNB in the following manners:
• performing set partitioning on the plurality of UEs to obtain one or more UE sets, and configuring a CSI Process Group containing one or more CSI Processes for each UE set,
• wherein when a plurality of CSI Process Groups are configured for the plurality of UEs, CSI Processes contained in any two of the plurality of configured CSI Process Groups are partially the same or totally different.

A User Equipment (UE), comprising:

• a processor;
• and
• a memory for storing instructions executable by the processor,
• wherein the processor is arranged to:
• receive a Channel State Information Reference Signal (CSI-RS) resource indicator issued by an evolved Node B (eNB), the CSI-RS resource indicator being used to indicate a CSI-RS resource that can be used by the UE and pertains to one or more CSI-RS resources configured by the eNB for a plurality of UEs within a cell covered by the eNB;
• and
• perform CSI measurement and feedback according to the CSI-RS resource indicated by the eNB,
• wherein the CSI-RS resource comprises the following resources:
• CSI Process, or Non-Zero Power (NZP) CSI-RS resource, or CSI-RS port(s),
• wherein if each of the one or more CSI-RS resources is a CSI Process, the one or more CSI-RS resources are configured for the plurality of UEs by the eNB in the following manners:
• performing set partitioning on the plurality of UEs to obtain one or more UE sets, and configuring a CSI Process Group containing one or more CSI Processes for each UE set,
• wherein when a plurality of CSI Process Groups are configured for the plurality of UEs, CSI Processes contained in any two of the plurality of configured CSI Process Groups are partially the same or totally different.