Control Information Indication Method and Apparatus

Abstract

Embodiments of the present invention disclose a control information indication method and apparatus, and relate to the field of communications technologies. The method includes: sending at least one piece of control information carried in a first serving cell to a user equipment (UE), where the control information includes a carrier identity, so that the UE parses an information field of the control information to acquire the carrier identity, determines, according to the carrier identity, a serving cell to which data corresponding to the control information belongs, and performs demodulation and decoding on the data in the serving cell by using the control information.

What is claimed is: 
     
         1 . A method, comprising:
 receiving, by a user equipment, control information sent from a base station in a first serving cell, wherein an information field of the control information comprises a carrier identity, and the carrier identity is set in a first part of the information field of the control information, a second part of the information field of the control information, or both the first part of the information field and the second part of the information field;   parsing, by the user equipment, the information field of the control information to acquire the carrier identity;   determining, by the user equipment according to the carrier identity, a serving cell to which data corresponding to the control information belongs; and   performing, by the user equipment, demodulation and decoding on the data in the serving cell using the control information.   
     
     
         2 . The method according to  claim 1 , wherein the carrier identity is set in both the first part and the second part in the information field of the control information, and the first part of the information field and the second part of the information field separately carry the same carrier identity. 
     
     
         3 . The method according to  claim 2 , wherein receiving, by the user equipment, the control information sent from the base station in the first serving cell, comprises:
 receiving, by the user equipment, the first part of the information field and the second part of the information field in different time slots.   
     
     
         4 . The method according to  claim 1 , wherein the carrier identity is set in both the first part of the information field and the second part of the information field of the control information, the carrier identity is split into a first piece and a second piece, and wherein the first piece is carried in the first part of the information field and the second piece is carried in the second part of the information field. 
     
     
         5 . The method according to  claim 1 , wherein the control information further comprises an identity of the user equipment, and the identity of the user equipment is set in both the first part of the information field and the second part of the information field. 
     
     
         6 . The method according to  claim 1 , wherein the user equipment is configured in multiple input multiple output (MIMO) mode. 
     
     
         7 . An apparatus, comprising:
 at least one processor; and   a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium stores a program to be executed by the at least one processor, and the program comprises instructions for:
 utilizing a receiver to receive control information sent from a base station in a first serving cell, wherein an information field of the control information comprises a carrier identity, and the carrier identity is set in a first part of the information field, a second part of the information field of the control information, or both the first part of the information field and the second part of the information field; 
   parsing the information field of the control information to acquire the carrier identity;   determining, according to the carrier identity, a serving cell to which data corresponding to the control information belongs; and   performing demodulation and decoding on the data in the serving cell using the control information.   
     
     
         8 . The apparatus according to  claim 7 , wherein the carrier identity is set in both the first part of the information field and the second part of the information field, and the first part and the second part separately carry the same carrier identity. 
     
     
         9 . The apparatus according to  claim 8 , wherein the utilizing the receiver to receive control information sent from the base station comprises:
 utilizing the receiver to receive the first part of the information field and the second part of the information field in different time slots.   
     
     
         10 . The apparatus according to  claim 7 , wherein the carrier identity is set in both the first part of the information field and the second part of the information field, the carrier identity is split into a first piece and a second piece, wherein the first piece is carried in the first part of the information field and the second piece is carried in the second part of the information field. 
     
     
         11 . The apparatus according to  claim 7 , wherein the control information further comprises a identity of the apparatus, and the identity of the apparatus is set in both the first part of the information field and the second part of the information field. 
     
     
         12 . A non-transitory computer readable storage medium storing a program to be executed by at least one processor, the program comprising instructions for:
 utilizing a receiver to receive control information sent from a base station in a first serving cell, wherein an information field of the control information comprises a carrier identity, and the carrier identity is set in a first part of the information field of the control information, a second part of the information field of the control information, or both the first part of the information field and the second part of the information field;   parsing the information field of the control information to acquire the carrier identity;   determining, according to the carrier identity, a serving cell to which data corresponding to the control information belongs; and   performing demodulation and decoding on the data in the serving cell using the control information.   
     
     
         13 . The non-transitory computer readable storage medium according to  claim 12 , wherein the carrier identity is set in both the first part of the information field and the second part of the information field, and the first part of the information field and the second part of the information field separately carry the same carrier identity. 
     
     
         14 . The non-transitory computer readable storage medium according to  claim 13 , wherein the utilizing the receiver to receive control information sent from the base station comprises:
 utilizing the receiver to receive the first part of the information field and the second part of the information field of the control information in different time slots.   
     
     
         15 . The non-transitory computer readable storage medium according to  claim 12 , wherein the carrier identity is set in both the first part of the information field and the second part of the information field of the control information, the carrier identity is split into a first piece and a second piece, wherein the first piece is carried in the first part of the information field and the second piece is carried in the second part of the information field. 
     
     
         16 . The non-transitory computer readable storage medium according to  claim 12 , wherein the control information further comprises an identity of an apparatus comprising the processor, and the identity of the apparatus is set in both the first part of the information field and the second part of the information field.