Method for receiving and sending control channel, user equipment and base station

Abstract

The present invention discloses methods for receiving and sending a control channel, user equipment, and a base station. The method for receiving a control channel includes: obtaining time-frequency resource information and first information of the control channel; determining a search space of the control channel according to the time-frequency resource information and the first information; and receiving the control channel in the search space. By using the methods, the user equipment and the base station according to embodiments of the present invention, the search space of the control channel can be determined according to the time-frequency resource information and the first information of the control channel, so that receiving and sending of the control channel can be implemented and a capacity of the control channel can be expanded, thereby improving system scheduling efficiency and flexibility and further improving user experience.

What is claimed is: 
     
         1 . A method for receiving a control channel, the method comprising:
 obtaining, by a terminal device, time-frequency resource information of the control channel;   determining, by the terminal device, a search space resource according to the time-frequency resource information and a first mapping relationship between the time-frequency resource information and the search space resource, wherein the search space resource comprises a candidate control channel of the terminal device, and an aggregation level of the candidate control channel is larger than 1; and   receiving, by the terminal device, the control channel in a resource occupied by the candidate control channel of the terminal device according to a configuration information value of the terminal device, wherein a resource occupied by the candidate control channel and the configuration information value fulfills a user equipment (UE) specific mapping relationship respectively.   
     
     
         2 . The method according to  claim 1 , wherein:
 when the terminal device is a first terminal device, a first configuration information value of the first terminal device corresponds to a first candidate control channel of the first terminal device;   when the terminal device is a second terminal device, a second configuration information value of the second terminal device corresponds to a second candidate control channel of the second terminal device; and   wherein the first configuration information value and the second configuration information value are different, and a first time-frequency resource of the first terminal device occupied by the first candidate control channel and a second time-frequency resource of the second terminal device occupied by the second candidate control channel are overlapped.   
     
     
         3 . The method according to  claim 1 , wherein the UE specific mapping relationship is determined according to an implicit preset rule. 
     
     
         4 . The method according to  claim 3 , wherein:
 when the terminal device is a first terminal device, a first configuration information value of the first terminal device corresponds to a first candidate control channel of the first terminal device;   when the terminal device is a second terminal device, a second configuration information value of the second terminal device corresponds to a second candidate control channel of the second terminal device; and   wherein the first configuration information value and the second configuration information value are different, and a first time-frequency resource of the first terminal device occupied by the first candidate control channel and a second time-frequency resource of the second terminal device occupied by the second candidate control channel are overlapped.   
     
     
         5 . The method according to  claim 1 , wherein the configuration information value comprises an antenna port number of user equipment specific reference signal (UERS) of the terminal device. 
     
     
         6 . A terminal device, comprising:
 a receiver:   a processor; and   a memory coupled to the processor, the memory comprising instructions that, when executed by the processor, cause the terminal device to:
 obtain time-frequency resource information of the control channel, 
 determine a search space resource according to the time-frequency resource information and a first mapping relationship between the time-frequency resource information and the search space resource, wherein the search space resource comprises a candidate control channel of the terminal device, and an aggregation level of the candidate control channel is larger than 1, and 
 receive the control channel in a resource occupied by the candidate control channel of the terminal device according to a configuration information value of the terminal device, wherein a resource occupied by the candidate control channel and the configuration information value fulfills a user equipment (UE) specific mapping relationship respectively. 
   
     
     
         7 . The terminal device according to  claim 6 , wherein:
 when the terminal device is a first terminal device, a first configuration information value of the first terminal device corresponds to a first candidate control channel of the first terminal device;   when the terminal device is a second terminal device, a second configuration information value of the second terminal device corresponds to a second candidate control channel of the second terminal device; and   wherein the first configuration information value and the second configuration information value are different, and a first time-frequency resource of the first terminal device occupied by the first candidate control channel and a second time-frequency resource of the second terminal device occupied by the second candidate control channel are overlapped.   
     
     
         8 . The terminal device according to  claim 6 , wherein the UE specific mapping relationship is determined according to an implicit preset rule. 
     
     
         9 . The terminal device according to  claim 8 , wherein:
 when the terminal device is a first terminal device, a first configuration information value of the first terminal device corresponds to a first candidate control channel of the first terminal device;   when the terminal device is a second terminal device, a second configuration information value of the second terminal device corresponds to a second candidate control channel of the second terminal device; and   wherein the first configuration information value and the second configuration information value are different, and a first time-frequency resource of the first terminal device occupied by the first candidate control channel and a second time-frequency resource of the second terminal device occupied by the second candidate control channel are overlapped.   
     
     
         10 . The terminal device according to  claim 6 , wherein the configuration information value comprises an antenna port number of user equipment specific reference signal (UERS) of the terminal device. 
     
     
         11 . A method for sending a control channel, the method comprising:
 obtaining, by a base station, time-frequency resource information of the control channel;   determining, by the base station, a search space resource of a terminal device according to the time-frequency resource information and a first mapping relationship between the time-frequency resource information and the search space resource, wherein the search space resource comprises a candidate control channel of the terminal device, and an aggregation level of the candidate control channel is larger than 1; and   sending, by the base station, the control channel in a resource occupied by the candidate control channel of the terminal device according to a configuration information value of the terminal device, wherein a resource occupied by the candidate control channel and the configuration information value fulfills a user equipment (UE) specific mapping relationship respectively.   
     
     
         12 . The method according to  claim 11 , wherein:
 when the terminal device is a first terminal device, a first configuration information value of the first terminal device corresponds to a first candidate control channel of the first terminal device;   when the terminal device is a second terminal device, a second configuration information value of the second terminal device corresponds to a second candidate control channel of the second terminal device; and   wherein the first configuration information value and the second configuration information value are different, and a first time-frequency resource of the first terminal device occupied by the first candidate control channel and a second time-frequency resource of the second terminal device occupied by the second candidate control channel are overlapped.   
     
     
         13 . The method according to  claim 11 , wherein the UE specific mapping relationship is determined according to an implicit preset rule. 
     
     
         14 . The method according to  claim 13 , wherein:
 when the terminal device is a first terminal device, a first configuration information value of the first terminal device corresponds to a first candidate control channel of the first terminal device;   when the terminal device is a second terminal device, a second configuration information value of the second terminal device corresponds to a second candidate control channel of the second terminal device; and   wherein the first configuration information value and the second configuration information value are different, and a first time-frequency resource of the first terminal device occupied by the first candidate control channel and a second time-frequency resource of the second terminal device occupied by the second candidate control channel are overlapped.   
     
     
         15 . The method according to  claim 11 , wherein the configuration information value comprises an antenna port number of user equipment specific reference signal (UERS) of the terminal device. 
     
     
         16 . A base station, comprising:
 a transmitter:   a processor; and   a memory coupled to the processor, the memory comprising instructions that, when executed by the processor, cause the base station to:
 obtain time-frequency resource information of the control channel, 
 determine a search space resource of a terminal device according to the time-frequency resource information and a first mapping relationship between the time-frequency resource information and the search space resource, wherein the search space resource comprises a candidate control channel of the terminal device, and an aggregation level of the candidate control channel is larger than 1, and 
 send the control channel in a resource occupied by the candidate control channel of the terminal device according to a configuration information value of the terminal device, wherein a resource occupied by the candidate control channel and the configuration information value fulfil a user equipment (UE) specific mapping relationship respectively. 
   
     
     
         17 . The base station according to  claim 16 , wherein:
 when the terminal device is a first terminal device, a first configuration information value of the first terminal device corresponds to a first candidate control channel of the first terminal device;   when the terminal device is a second terminal device, a second configuration information value of the second terminal device corresponds to a second candidate control channel of the second terminal device; and   wherein the first configuration information value and the second configuration information value are different, and a first time-frequency resource of the first terminal device occupied by the first candidate control channel and a second time-frequency resource of the second terminal device occupied by the second candidate control channel are overlapped.   
     
     
         18 . The base station according to  claim 16 , wherein the UE specific mapping relationship is determined according to an implicit preset rule. 
     
     
         19 . The base station according to  claim 18 , wherein:
 when the terminal device is a first terminal device, a first configuration information value of the first terminal device corresponds to a first candidate control channel of the first terminal device;   when the terminal device is a second terminal device, a second configuration information value of the second terminal device corresponds to a second candidate control channel of the second terminal device; and   wherein the first configuration information value and the second configuration information value are different, and a first time-frequency resource of the first terminal device occupied by the first candidate control channel and a second time-frequency resource of the second terminal device occupied by the second candidate control channel are overlapped.   
     
     
         20 . The base station according to  claim 16 , wherein the configuration information value comprises an antenna port number of user equipment specific reference signal (UERS) of the terminal device.