Communication method and system using uplink multiple input multiple output technology

Abstract

The present invention discloses a communication method and system using MIMO technology. The communication method includes: a network side device determines whether a UE uses a single-stream mode or a multi-stream mode as an uplink data transmission mode; and the network side device notifies the UE of indication information indicating the determined uplink data transmission mode. The communication method and system help the UE to use a specific uplink data transmission mode in combination with various factors, therefore reducing a delay of an uplink data transmission, improving an uplink data transmission speed, thereby meeting development needs of uplink high-speed data communication services of the UE.

What is claimed is: 
     
         1 . A communication method using uplink Multiple Input Multiple Output (MIMO) technology, comprising:
 determining, by a network side device, whether a User Equipment (UE) uses a single-stream mode or a multi-stream mode as an uplink data transmission mode; and   notifying, by the network side device, the UE of indication information indicating the determined uplink data transmission mode of the UE.   
     
     
         2 . The communication method according to  claim 1 , wherein the determination step comprises:
 determining, by the network side device, the uplink data transmission mode of the UE according to at least one of the following factors: an uplink transmission data amount of the UE, quality of a channel related to uplink data transmission, scheduling capability of a Node B, load situation of a serving cell where the UE is located, and power of the UE.   
     
     
         3 . The communication method according to  claim 1 , wherein when the network side device is a Node B,
 the notification step comprises:   notifying, by the Node B, the UE of the indication information by delivering a Shared Control Channel for High Speed Downlink Shared Channel (HS-DSCH) order; wherein Hybrid Automatic Repeat Request (HARQ) process information, and redundancy and constellation version information of the HS-DSCH order are set as order type and order of the HS-SCCH order; wherein the order type and the order bear the indication information.   
     
     
         4 . The communication method according to  claim 3 , wherein the order type is x odt,1 , x odt,2 , x odt,3 , and the order is x ord,1 , x ord,2 , x ord,3 ; the order type x odt,1 , x odt,2 , x odt,3  is set to “001”, and the order x ord,1  and/or x ord,2  is set to bear the indication information. 
     
     
         5 . The communication method according to  claim 3 , wherein the order type is x odt,1 , x odt,2 , x odt,3 , and the order is x ord,1 , x ord,2 , x ord,3 ; the order type x odt,1 , x odt,2 , x odt,3  is set to any binary combination except “000” and “001”, and the order x ord,1  or x ord,2  or x ord,3  or any combination of x odt,1 , x odt,2  and x odt,3  is set to bear the indication information. 
     
     
         6 . The communication method according to  claim 1 , wherein when the network side device is a Node B, the notification step comprises:
 notifying, by the Node B, the UE of the indication information through an absolute grant delivered on an Enhanced Dedicated Channel Absolute Grant Channel (E-AGCH).   
     
     
         7 . The communication method according to  claim 6 , wherein when the Node B determines that the uplink data transmission mode of the UE is the single-stream mode,
 the notification step comprises:   setting, by the Node B, an 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 0 and 1; and   setting by the Node B, E-AGCHs corresponding to the rest of the 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.   
     
     
         8 . The communication method according to  claim 6 , wherein when the Node B determines that the uplink data transmission mode of the UE is the multi-stream mode,
 the notification step 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 0 and 1.   
     
     
         9 . A communication method using uplink Multiple Input Multiple Output (MIMO) technology, comprising:
 receiving, by a User Equipment (UE), an indication information indicating a determined uplink data transmission mode of the UE from a network side device; wherein the determined uplink data transmission mode of the UE is a single-stream mode or a multi-stream mode determined by the network side device;   deciding, by the UE, a transmission mode during uplink data transmission according to the indication information; and   performing, by the UE, the uplink data transmission according to the transmission mode.   
     
     
         10 . The communication method according to  claim 9 , wherein when the indication information is delivered through a Shared Control Channel for High Speed Downlink Shared Channel (HS-DSCH) order,
 Hybrid Automatic Repeat Request (HARQ) process information, and redundancy and constellation version information are set as order type and order of the HS-SCCH order; wherein the order type and the order bear the indication information.   
     
     
         11 . The communication method according to  claim 10 , wherein the order type is x odt,1 , x odt,2 , x odt,3 , and the order is x ord,1 , x ord,2 , x ord,3 ; the order type x odt,1 , x odt,2 , x odt,3  is set to “001”, and the order x ord,1  and/or x ord,2  is set to bear the indication information. 
     
     
         12 . The communication method according to  claim 10 , wherein the order type is x odt,1 , x odt,2 , x odt,3 , and the order is x ord,1 , x ord,2 , x ord,3 ; the order type x odt,1 , x odt,2 , x odt,3  is set to any binary combination except “000” and “001”, and the order x ord,1  or x ord,2  or x ord,3  or any combination of x odt,1 , x odt,2  and x odt,3  is set to bear the indication information. 
     
     
         13 . The communication method according to  claim 9 , wherein when the uplink data transmission mode of the UE is the single-stream mode and the indication information is delivered through an absolute grant borne on an Enhanced Dedicated Channel Absolute Grant Channel (E-AGCH),
 an E-AGCH corresponding to a data stream in multiple data streams is set to deliver an absolute grant with an absolute grant value corresponding to an index value except 0 and 1; and   E-AGCHs corresponding to the rest of the data streams in the multiple data streams are set 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.   
     
     
         14 . The communication method according to  claim 9 , wherein when the Node B determines that the uplink data transmission mode of the UE is the multi-stream mode and the indication information is delivered through an absolute grant borne on an Enhanced Dedicated Channel Absolute Grant Channel (E-AGCH),
 E-AGCHs corresponding to at least two data streams in the multiple data streams are set to respectively deliver an absolute grant with an absolute grant value corresponding to an index value except 0 and 1.   
     
     
         15 . A communication system using uplink Multiple Input Multiple Output (MIMO) technology, comprising:
 a network side device communicating with a User Equipment (UE),   wherein the network side device comprises:   a determination module, configured to determine whether the UE uses a single-stream mode or a multi-stream mode as an uplink data transmission mode; and   a notification module, configured to notify the UE of indication information indicating the determined uplink data transmission mode of the UE.   
     
     
         16 . The communication system according to  claim 15 , wherein when the network side device is a Node B, the notification module is further configured to notify the UE of the indication information by delivering a Shared Control Channel for High Speed Downlink Shared Channel (HS-DSCH) order; wherein
 Hybrid Automatic Repeat Request (HARQ) process information, and redundancy and constellation version information are set as order type and order of the HS-SCCH order; wherein the order type and the order is set to bear the indication information.   
     
     
         17 . The communication system according to  claim 16 , wherein the order type is x odt,1 , x odt,2 , x odt,3 , and the order is x ord,1 , x ord,2 , x ord,3 ; the order type x odt,1 , x odt,2 , x odt,3  is set to “001” and the order x ord,1  and/or x ord,2  is set to bear the indication information. 
     
     
         18 . The communication system according to  claim 16 , wherein the order type is x odt,1 , x odt,2 , x odt,3 , and the order is x ord,1 , x ord,2 , x ord,3 ; the order type x odt,1 , x odt,2 , x odt,3  is set to any binary combination except “000” and “001”, and the order x ord,1  or x ord,2  or x ord,3  or any combination of the order x odt,1 , x odt,2  and x odt,3  is set to bear the indication information. 
     
     
         19 . The communication system according to  claim 15 , wherein when the network side device is a Node B, the notification module is further configured to notify the UE of the indication information through an absolute grant delivered on an Enhanced Dedicated Channel Absolute Grant Channel (E-AGCH); wherein
 when the determination module determines that the uplink data transmission mode of the UE is the single-stream mode, the notification module is further configured to set an 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 0 and 1; and the notification module is further configured to set the E-AGCHs corresponding to the rest of the data streams in the multiple data streams to respectively deliver an absolute grant with an absolute grant value corresponding to the index value 0 or 1 and with an absolute grant scope corresponding to index value 0.   
     
     
         20 . The communication system according to  claim 15 , wherein when the network side device is a Node B, the notification module is further configured to notify the UE of the indication information through an absolute grant delivered on an Enhanced Dedicated Channel Absolute Grant Channel (E-AGCH); wherein
 when the determination module determines that the uplink data transmission mode of the UE is the multi-stream mode, the notification module is further configured to set the 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 0 and 1.