Methods for repetition design

1. A method comprising:

obtaining a repetition configuration by a user equipment (UE) in a wireless communication system, wherein the repetition configuration configures each repetition for repeatedly transmitted information packets;

determining a repetition time interval (RTI) length for the repeatedly transmitted information packets;

receiving information packets from a base station, wherein the information packets are transmitted repeatedly by a repetition number, and wherein a redundancy version (RV) value is selected from a preconfigured RV sequence for each repeated transmission, and wherein the RV sequence is repeatedly used for the repeated transmission by applying one way of repetitions selecting from applying each RV value one by one to one block of repetitions cyclically, wherein the number of repetition in the block is determined by the repetition number and the length of the RV sequence and applying each RV value one by one to one repetition cyclically; and

combining received each repetition of the information packets and decoding the information packets based on the repetition configuration.

2. The method of claim 1 , wherein the repetition configuration includes one or more repetition parameters comprising: a scrambling sequence, a RV value, a physical resource location, and a repetition type.

3. The method of claim 1 , wherein the RV sequence is repeatedly used for the repeated transmission, by applying each RV value one by one to one block of repetitions cyclically, and wherein a scrambling sequence is the same within the one block of repetitions.

4. The method of claim 1 , wherein combining received each repetition of the information packets and decoding the information packets comprising:

collecting available resources within one or multiple repetitions in a contiguous way belonging to each one symbol within a transmitted symbol sequence, wherein the symbol sequence is generated from the information packet, if the one or multiple repetitions are determined as a symbol level repetition;

obtaining a received symbol by combining collected available resources from the one or multiple repetitions; and

demodulating received data by constructing received symbols one by one after combination;

combining each demodulation output from each one or multiple repetitions, and decoding the received information packet.

5. The method of claim 1 , wherein combining received each repetition of the information packets and decoding the information packets comprising:

collecting available resources within one or multiple repetitions in a discrete way belonging to each symbol within a transmitted symbol sequence, wherein the symbol sequence is generated from the information packet, if the one or multiple repetitions are determined as a symbol level repetition;

obtaining a received symbol by combining collected available resources from the one or multiple repetitions; and

demodulating received data by constructing received symbols one by one after combination; and

combining each demodulation output from each one or multiple repetitions, and decoding the received information packet.

6. The method of claim 1 , wherein combining received each repetition of the information packets and decoding the information packets comprising:

obtaining a received repetition by collecting available resources within one repetition at one time block belonging to a transmitted symbol sequence, wherein the symbol sequence is generated from the information packet, if the one repetition is determined as a bit-level repetition;

demodulating the each received repetition; and

decoding the received information packet by combining each output at each repetition.

7. The method of claim 1 , wherein the repeated transmission is an intra repetition that repeatedly transmits the information packets within one RTI over different frequency domains.

8. The method of claim 7 , further comprising:

determining an intra repetition mechanism by checking an indicator within a control signaling;

determining a basic resource granularity for one repetition under the intra repetition; and

receiving multiple repetitions within one RTI.

9. The method of claim 8 , wherein a size of the basic resource granularity is indicated by an indicator within a control signaling for the information packet transmission.

10. A user equipment (UE), comprising:

a transceiver that transmits and receives radio signals in wireless network;

a memory; and

a processor coupled to the memory, the processor configured to obtain a repetition configuration and configure each repetition for repeatedly transmitted information packets;

determine a repetition time interval (RTI) length for the repeatedly transmitted information packets;

receive information packets from a base station, wherein the information packets are transmitted repeatedly by a repetition number, and wherein a redundancy version (RV) value is selected from a preconfigured RV sequence for each repeated transmission, and wherein the RV sequence is repeatedly used for the repeated transmission by applying one way of repetitions selecting from applying each RV value one by one to one block of repetitions cyclically, wherein the number of repetition in the block is determined by the repetition number and the length of the RV sequence and applying each RV value one by one to one repetition cyclically; and

combine received each repetition of the information packets and decodes the information packets based on the repetition configuration.

11. The UE of claim 10 , wherein the repetition configuration includes one or more repetition parameters comprising: a scrambling sequence, a RV value, a physical resource location, and a repetition type.

12. The UE of claim 10 , wherein the RV sequence is repeatedly used for the repeated transmission, by applying each RV value one by one to one block of repetitions cyclically, and wherein a scrambling sequence is the same within the one block of repetitions.

13. The UE of claim 10 , wherein combining received each repetition of the information packets and decoding the information packets comprising:

collecting available resources within one or multiple repetitions in a contiguous way belonging to each one symbol within a transmitted symbol sequence, wherein the symbol sequence is generated from the information packet, if the one or multiple repetitions are determined as a symbol level repetition;

obtaining a received symbol by combining collected available resources from the one or multiple repetitions; and

demodulating received data by constructing received symbols one by one after combination;

combining each demodulation output from each one or multiple repetitions, and decoding the received information packet.

14. The UE of claim 10 , wherein combining received each repetition of the information packets and decoding the information packets comprising:

collecting available resources within one or multiple repetitions in a discrete way belonging to each symbol within a transmitted symbol sequence, wherein the symbol sequence is generated from the information packet, if the one or multiple repetitions are determined as a symbol level repetition;

obtaining a received symbol by combining collected available resources from the one or multiple repetitions; and

demodulating received data by constructing received symbols one by one after combination; and

combining each demodulation output from each one or multiple repetitions, and decoding the received information packet.

15. The UE of claim 10 , wherein combining received each repetition of the information packets and decoding the information packets comprising:

obtaining a received repetition by collecting available resources within one repetition at one time block belonging to a transmitted symbol sequence, wherein the symbol sequence is generated from the information packet, if the one repetition is determined as a bit-level repetition;

demodulating the each received repetition; and

decoding the received information packet by combining each output at each repetition.

16. The UE of claim 10 , wherein the repeated transmission is an intra repetition that repeatedly transmits the information packets within one RTI over different frequency domains.

17. The UE of claim 10 , further comprising an intra-repetition handler that determines an intra repetition mechanism by checking an indicator within a control signaling, determines a basic resource granularity for one repetition under the intra repetition, and receives multiple repetitions within one RTI.

18. The UE of claim 17 , wherein a size of the basic resource granularity is indicated by an indicator within a control signaling for the information packet transmission.