Coordinated transmission method and device

Abstract

Embodiments of the present invention provide a coordinated transmission method and a device. The method includes: communicating, by a UE, with a macro base station in a subframe in a first subframe set; and communicating, by the UE, with a micro base station in a subframe in a second subframe set; where the subframe in the first subframe set and the subframe in the second subframe set do not overlap. Technical solutions of the present invention solve a problem that application of a CoMP transmission technology is limited.

1 . A coordinated transmission method, comprising:
 sending, by a macro base station, a first association relationship and a second association relationship, wherein the first association relationship comprises an identifier of a first logical channel associated with a first subframe set, the second association relationship comprises an identifier of a second logical channel associated with a second subframe set; and   receiving, by the macro base station in a first uplink subframe in the first subframe set according to the first association relationship, data on a first radio bearer corresponding to the identifier of the first logical channel in the first association relationship, the first logical channel having a one-to-one correspondence with the first radio bearer.   
     
     
         2 . The coordinated transmission method according to  claim 1 , wherein a downlink subframe in the first subframe set meets that, if a downlink subframe n belongs to the first subframe set, a downlink subframe (n+8) also belongs to the first subframe set. 
     
     
         3 . The coordinated transmission method according to  claim 2 , wherein an uplink subframe in the first subframe set meets that, if a downlink subframe n belongs to the first subframe set, an uplink subframe (n+4) also belongs to the first subframe set. 
     
     
         4 . The coordinated transmission method according to  claim 1 , further comprising:
 sending, by the macro base station in the downlink subframe in the first subframe set, a cell-specific RS (CRS) and a channel demodulated based on the CRS; or   sending, by the macro base station in the downlink subframe in the first subframe set, a primary synchronization signal (PSS); or   sending, by the macro base station in the downlink subframe in the first subframe set, a secondary synchronization signal (SSS); or   sending, by the macro base station in the downlink subframe in the first subframe set, an evolved physical downlink control channel (ePDCCH) that is demodulated based on a demodulation reference signals (DMRS).   
     
     
         5 . The coordinated transmission method according to  claim 1 , further comprising:
 sending, by the macro base station to the UE, a first physical layer parameter configuration and a second physical layer parameter configuration respectively corresponding to the first subframe set and the second subframe set.   
     
     
         6 . The coordinated transmission method according to  claim 5 , further comprising:
 determining, by the macro base station, the first physical layer parameter configuration; and receiving the second physical layer parameter configuration sent by a micro base station.   
     
     
         7 . The coordinated transmission method according to  claim 5 , further comprising:
 determining, by the macro base station, the first physical layer parameter configuration and the second physical layer parameter configuration separately; and   sending, by the macro base station, the second physical layer parameter configuration to the micro base station.   
     
     
         8 . A device, comprising:
 a memory storing instructions; and   a processor coupled to the memory to execute the instructions to:
 send a first association relationship and a second association relationship to a user equipment (UE), wherein the first association relationship comprises an identifier of a first logical channel associated with a first subframe set, the second association relationship comprises an identifier of a second logical channel associated with a second subframe set; and 
 receive, in a first uplink subframe in the first subframe set according to the first association relationship, data on a first radio bearer corresponding to the identifier of the first logical channel in the first association relationship, the first logical channel having a one-to-one correspondence with the first radio bearer. 
   
     
     
         9 . The device according to  claim 8 , wherein a downlink subframe in the first subframe set meets that, if a downlink subframe n belongs to the first subframe set, a downlink subframe (n+8) also belongs to the first subframe set. 
     
     
         10 . The device according to  claim 9 , wherein an uplink subframe in the first subframe set meets that, if a downlink subframe n belongs to the first subframe set, an uplink subframe (n+4) also belongs to the first subframe set. 
     
     
         11 . The device according to  claim 8 , wherein the processor is further configured to
 send, in the downlink subframe in the first subframe set, a cell-specific RS (CRS) and a channel demodulated based on the CRS; or   send, in the downlink subframe in the first subframe set, a primary synchronization signal (PSS); or   send, in the downlink subframe in the first subframe set, a secondary synchronization signal (SSS); or   send, in the downlink subframe in the first subframe set, an evolved physical downlink control channel (ePDCCH) that is demodulated based on a demodulation reference signals (DMRS).   
     
     
         12 . The device according to  claim 8 , the processor is further configured to:
 send to the UE, a first physical layer parameter configuration and a second physical layer parameter configuration respectively corresponding to the first subframe set and the second subframe set.   
     
     
         13 . The device according to  claim 12 , the processor is further configured to:
 determine the first physical layer parameter configuration; and   receive the second physical layer parameter configuration sent by a micro base station.   
     
     
         14 . The device according to  claim 12 , the processor is further configured to:
 determine the first physical layer parameter configuration and the second physical layer parameter configuration separately; and   send the second physical layer parameter configuration to the micro base station.   
     
     
         15 . A non-transitory computer readable storage medium having instructions stored therein, which when executed by a processor, cause the processor to perform a coordinated transmission method, the method comprising:
 sending a first association relationship and a second association relationship, wherein the first association relationship comprises an identifier of a first logical channel associated with a first subframe set, the second association relationship comprises an identifier of a second logical channel associated with a second subframe set; and   receiving, in a first uplink subframe in the first subframe set according to the first association relationship, data on a first radio bearer corresponding to the identifier of the first logical channel in the first association relationship, the first logical channel having a one-to-one correspondence with the first radio bearer.   
     
     
         16 . The computer readable storage medium according to  claim 15 , wherein a downlink subframe in the first subframe set meets that, if a downlink subframe n belongs to the first subframe set, a downlink subframe (n+8) also belongs to the first subframe set. 
     
     
         17 . The computer readable storage medium according to  claim 16 , wherein an uplink subframe in the first subframe set meets that, if a downlink subframe n belongs to the first subframe set, an uplink subframe (n+4) also belongs to the first subframe set. 
     
     
         18 . The computer readable storage medium according to  claim 15 , wherein the method further comprises:
 sending, in the downlink subframe in the first subframe set, a cell-specific RS (CRS) and a channel demodulated based on the CRS; or   sending, in the downlink subframe in the first subframe set, a primary synchronization signal (PSS); or   sending, in the downlink subframe in the first subframe set, a secondary synchronization signal (SSS); or   sending, in the downlink subframe in the first subframe set, an evolved physical downlink control channel (ePDCCH) that is demodulated based on a demodulation reference signals (DMRS).   
     
     
         19 . The computer readable storage medium according to  claim 15 , wherein the method further comprises:
 sending to the UE a first physical layer parameter configuration and a second physical layer parameter configuration respectively corresponding to the first subframe set and the second subframe set.   
     
     
         20 . The computer readable storage medium according to  claim 19 , wherein the method further comprises:
 determining the first physical layer parameter configuration; and receiving the second physical layer parameter configuration sent by a micro base station.