Support for single-code user equipment

Abstract

Methods, systems, and devices for wireless communication are described. A wireless device may determine that a serving base station supports multi-code and single-code transmissions, receiving a scheduling message having a cyclic redundancy check scrambled with a radio network temporary identifier (RNTI), determine resources for communicating with the serving base station based on the scheduling message, and communicate on the resources using coding associated with the single-code transmissions. A base station may identify at least one user equipment that supports single-code transmissions, transmit a scheduling message having a cyclic redundancy check (CRC) scrambled with a radio network temporary identifier (RNTI), wherein the scheduling message schedules the at least one user equipment for communication on resources using coding associated with the single-code transmissions and communicate with the at least one user equipment on the resources using the coding.

What is claimed is: 
     
         1 . A method for wireless communication, comprising:
 identifying at least one user equipment that supports single-code transmissions;   transmitting a scheduling message having a cyclic redundancy check (CRC) scrambled with a radio network temporary identifier (RNTI), wherein the scheduling message schedules the at least one user equipment for communication on resources using coding associated with the single-code transmissions; and   communicating with the at least one user equipment on the resources using the coding.   
     
     
         2 . The method of  claim 1 , wherein the RNTI is associated with single-code transmission scheduling. 
     
     
         3 . The method of  claim 2 , further comprising:
 transmitting a second scheduling message having a CRC scrambled with a RNTI associated with multi-code transmission scheduling, wherein the second scheduling message schedules at least a second user equipment for communication on resources using coding associated with the multi-code transmission scheduling.   
     
     
         4 . The method of  claim 1 , wherein the RNTI is associated with multi-code transmission scheduling. 
     
     
         5 . The method of  claim 4 , wherein the communicating with the at least one user equipment on the resources is based at least in part on the scheduling message and an offset from resources scheduled by the scheduling message according to multi-code transmission scheduling. 
     
     
         6 . The method of  claim 4 , further comprising:
 including an offset in a master information block (MIB), using a bit in the MIB, that provides information for determining the resources; and   transmitting the MIB.   
     
     
         7 . The method of  claim 4 , further comprising:
 including an offset in a system information block (SIB) that provides information for determining the resources; and   transmitting the SIB.   
     
     
         8 . The method of  claim 1 , wherein identifying the at least one user equipment comprises receiving a random access message on random access channel (RACH) resources associated with single-code transmissions, receiving a preamble associated with single-code transmissions in the random access message, or receiving an indication in the random access message. 
     
     
         9 . An apparatus for wireless communication, comprising:
 a processor;   memory coupled with the processor; and   instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
 identify at least one user equipment that supports single-code transmissions; 
   transmit a scheduling message having a cyclic redundancy check (CRC) scrambled with a radio network temporary identifier (RNTI), wherein the scheduling message schedules the at least one user equipment for communication on resources using coding associated with the single-code transmissions; and   communicate with the at least one user equipment on the resources using the coding.   
     
     
         10 . The apparatus of  claim 9 , wherein the RNTI is associated with single-code transmission scheduling. 
     
     
         11 . The apparatus of  claim 9 , further comprising instructions operable to cause the apparatus to:
 transmit a second scheduling message having a CRC scrambled with a RNTI associated with multi-code transmission scheduling, wherein the second scheduling message schedules at least a second user equipment for communication on resources using coding associated with the multi-code transmission scheduling.   
     
     
         12 . The apparatus of  claim 9 , wherein the RNTI is associated with multi-code transmission scheduling. 
     
     
         13 . The apparatus of  claim 12 , wherein the communicating with the at least one user equipment on the resources is based at least in part on the scheduling message and an offset from resources scheduled by the scheduling message according to multi-code transmission scheduling. 
     
     
         14 . The apparatus of  claim 12 , further comprising instructions operable to cause the apparatus to:
 include an offset in a master information block (MIB), using a bit in the MIB, that provides information for determining the resources; and   transmit the MIB.   
     
     
         15 . The apparatus of  claim 12 , further comprising instructions operable to cause the apparatus to:
 include an offset in a system information block (SIB) that provides information for determining the resources; and   transmit the SIB.   
     
     
         16 . The apparatus of  claim 9 , wherein identifying the at least one user equipment comprises receiving a random access message on random access channel (RACH) resources associated with single-code transmissions, receiving a preamble associated with single-code transmissions in the random access message, or receiving an indication in the random access message. 
     
     
         17 . An apparatus for wireless communications, comprising:
 means for identifying at least one user equipment that supports single-code transmissions;   means for transmitting a scheduling message having a cyclic redundancy check (CRC) scrambled with a radio network temporary identifier (RNTI), wherein the scheduling message schedules the at least one user equipment for communication on resources using coding associated with the single-code transmissions; and   means for communicating with the at least one user equipment on the resources using the coding.   
     
     
         18 . The apparatus of  claim 17 , wherein the RNTI is associated with single-code transmission scheduling. 
     
     
         19 . The apparatus of  claim 18 , further comprising:
 means for transmitting a second scheduling message having a CRC scrambled with a RNTI associated with multi-code transmission scheduling, wherein the second scheduling message schedules at least a second user equipment for communication on resources using coding associated with the multi-code transmission scheduling.   
     
     
         20 . The apparatus of  claim 17 , wherein the RNTI is associated with multi-code transmission scheduling. 
     
     
         21 . The apparatus of  claim 20 , wherein the communicating with the at least one user equipment on the resources is based at least in part on the scheduling message and an offset from resources scheduled by the scheduling message according to multi-code transmission scheduling. 
     
     
         22 . The apparatus of  claim 20 , further comprising:
 means for including an offset in a master information block (MIB), using a bit in the MIB, that provides information for determining the resources; and   means for transmitting the MIB.   
     
     
         23 . The apparatus of  claim 20 , further comprising:
 means for including an offset in a system information block (SIB) that provides information for determining the resources; and   means for transmitting the SIB.   
     
     
         24 . The apparatus of  claim 17 , wherein identifying the at least one user equipment comprises receiving a random access message on random access channel (RACH) resources associated with single-code transmissions, receiving a preamble associated with single-code transmissions in the random access message, or receiving an indication in the random access message. 
     
     
         25 . A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable to:
 identify at least one user equipment that supports single-code transmissions;   transmit a scheduling message having a cyclic redundancy check (CRC) scrambled with a radio network temporary identifier (RNTI), wherein the scheduling message schedules the at least one user equipment for communication on resources using coding associated with the single-code transmissions; and   communicate with the at least one user equipment on the resources using the coding.   
     
     
         26 . The non-transitory computer-readable medium of  claim 25 , wherein the RNTI is associated with single-code transmission scheduling. 
     
     
         27 . The non-transitory computer-readable medium of  claim 26 , further comprising instructions executable to:
 transmit a second scheduling message having a CRC scrambled with a RNTI associated with multi-code transmission scheduling, wherein the second scheduling message schedules at least a second user equipment for communication on resources using coding associated with the multi-code transmission scheduling.   
     
     
         28 . The non-transitory computer-readable medium of  claim 25 , wherein the RNTI is associated with multi-code transmission scheduling. 
     
     
         29 . The non-transitory computer-readable medium of  claim 28 , wherein the communicating with the at least one user equipment on the resources is based at least in part on the scheduling message and an offset from resources scheduled by the scheduling message according to multi-code transmission scheduling. 
     
     
         30 . The non-transitory computer-readable medium of  claim 25 , wherein identifying the at least one user equipment comprises receiving a random access message on random access channel (RACH) resources associated with single-code transmissions, receiving a preamble associated with single-code transmissions in the random access message, or receiving an indication in the random access message.