Method and system for implicit user equipment identification
View Patent ↗A method for data related downlink signaling including selectively tailoring the UE ID to create a UE ID value, which is then added to a data field to create a data mask. This data mask is then further processed as the CRC field and transmitted with the data burst to provide CRC-related functions. An alternative embodiment discloses initializing a CRC generator with UE identification prior to CRC generation. This implicitly includes the UE ID within the CRC without requiring additional overhead signaling.
1. A system for transmitting a communication burst from a first communicating unit to a second communicating unit; the system comprising:
at said first communicating unit:
a cyclic redundancy check (CRC) generator for receiving data and generating a CRC;
a first combiner for combining said CRC with an identification of the second communicating unit to generate a mask; and
a transmitter for transmitting the burst comprising said mask and said data; and
at said second communicating unit:
a memory for storing the identification of the second communicating unit;
a receiver for receiving said communication burst including said mask and said data;
a second combiner for combining said mask with said stored identification to recover the CRC; and
means for determining whether said recovered CRC is valid.
2. The system of claim 1 , wherein said first and second combiners are modulo-2 adders.
3. A system for transmitting a communication burst from a first communicating unit to at least a second communicating unit; the second communicating unit being associated with an identification number; the system comprising:
at said first communicating unit:
a cyclic redundancy check (CRC) generator for receiving data and generating a CRC;
a combiner for combining said CRC with the identification number to generate a mask; and
a transmitter for transmitting a communication burst comprising said mask and said data; and
at said second communicating unit:
a memory for storing said identification number;
a receiver for receiving said communication burst including said mask and said data;
a combiner for combining said mask with said stored identification number to recover the CRC;
means for determining whether said recovered CRC is valid.
4. The system of claim 3 , further including at least a third communication unit, whereby said third communication unit is also associated with said identification number.
5. The system of claim 3 , further including a plurality of communication units, wherein only a portion of said plurality of communication units is associated with said identification number.
6. A system for transmitting a communication burst from a first communicating unit to a second communicating unit; the second unit being associated with an identification; the system comprising:
at said first communicating unit:
a combiner for receiving data and combining the data with an identification field including said identification to generate a mask;
a cyclic redundancy check (CRC) generator for receiving the mask and generating a CRC; and
a transmitter for transmitting a communication burst comprising said CRC and said data; and
at said second communicating unit:
a receiver for receiving said communication burst including said CRC and said data; and
means for determining whether said recovered CRC is valid.
7. The system of claim 6 , wherein said data comprises a data block and wherein said identification field includes both said identification and a plurality of additional bits such that the length of the identification field is the same as the length of the data block.
8. The system of claim 7 , wherein at least a portion of said additional bits includes said identification.
9. A method for transmitting a data burst from a first unit to a second unit comprising:
at said first unit:
receiving data for transmission;
generating a cyclic redundancy check (CRC) based upon said data;
combining the CRC with an identification of the second unit to generate a mask;
appending the mask onto the data to form a data burst; and
transmitting the data burst; and
at said second unit:
receiving said data burst;
retrieving the identification of the second unit from memory; and
combining the retrieved identification with said mask to generate said CRC; and
determining whether said CRC is valid.