Patent ID: 8913568

Claim:
A communication method using uplink Multiple Input Multiple Output (MIMO) technology, comprising: determining, by a network side device, an uplink data transmission mode of a single-stream in a time period uplink data transmission mode or a multi-stream in a time period uplink data transmission mode for a User Equipment (UE) to use for transmission of data to the network side device; and notifying, by the network side device, the UE through a downlink channel of indication information indicating the determined uplink data transmission mode of the UE, wherein when the network side device is a Node B and the Node B determines that the uplink data transmission mode of the UE is the single-stream in the time period uplink data transmission mode, the notifying comprises: setting, by the Node B, an absolute grant delivered on an Enhanced Dedicated Channel Absolute Grant Channel (E-AGCH) corresponding to a data stream in multiple data streams to deliver an absolute grant with an absolute grant value corresponding to an index value except for 0 or 1 index values, and setting, by the Node B, E-AGCHs corresponding to other data streams in the multiple data streams to respectively deliver an absolute grant with an absolute grant value corresponding to index value 0 or 1 and with an absolute grant scope corresponding to index value 0; or wherein when the network side device is a Node B and the Node B determines that the uplink data transmission mode of the UE is the multi-stream in the time period uplink data transmission mode, the notifying comprises: setting, by the Node B, E-AGCHs corresponding to at least two data streams in the multiple data streams to respectively deliver an absolute grant with an absolute grant value corresponding to an index value except for 0 or 1 index values.