System and method for adaptive transmission time interval (TTI) structure
Methods and devices are provided for communicating data in a wireless channel. In one example, a method includes adapting the transmission time interval (TTI) length of transport container for transmitting data in accordance with a criteria. The criteria may include (but is not limited to) a latency requirement of the data, a buffer size associated with the data, a mobility characteristic of a device that will receive the data. The TTI lengths may be manipulated for a variety of reasons, such as for reducing overhead, satisfy quality of service (QoS) requirements, maximize network throughput, etc. In some embodiments, TTIs having different TTI lengths may be carried in a common radio frame. In other embodiments, the wireless channel may partitioned into multiple bands each of which carrying (exclusively or otherwise) TTIs having a certain TTI length.
1. A method comprising:
receiving, by an apparatus, a first indication in a first UE specific control channel from a network device, the first indication indicating a first transmission time interval (TTI) length, wherein a first periodicity of the first UE specific control channel is configurable; and
receiving, by the apparatus, first data from the network device using the first TTI length.
2. The method of claim 1 , further comprising:
searching, by the apparatus, the first UE specific control channel based on the first periodicity.
3. The method of claim 1 , further comprising:
receiving, by the apparatus, a second indication in a second UE specific control channel from the network device, the second indication indicating a second TTI length, wherein a second periodicity of the second UE specific control channel is configurable; and
receiving, by the apparatus, second data from the network device using the second TTI length.
4. The method of claim 3 , further comprising:
searching, by the apparatus, the second UE specific control channel based on the second periodicity.
5. The method of claim 3 , wherein the first periodicity of the first UE specific control channel is different from the second periodicity of the second UE specific control channel.
6. The method of claim 3 , wherein the first data is received in a first frequency bandwidth partition, the second data is received in a second frequency bandwidth partition, and the first frequency bandwidth partition and the second frequency bandwidth partition occupy different bandwidth partitions within one carrier.
7. The method of claim 1 , further comprising:
receiving, by the apparatus, a first configuration of a third periodicity for searching for a first uplink (UL) grant within a third frequency bandwidth partition.
8. The method of claim 7 , further comprising:
receiving, by the apparatus, a second configuration of a fourth periodicity for searching for a second UL grant within a fourth frequency bandwidth partition, wherein the third periodicity is different from the fourth periodicity, and the third frequency bandwidth partition and the fourth frequency bandwidth partition occupy different bandwidth partition within one carrier.
9. A method of communicating data, the method comprising:
sending, by a network device, a first indication in a first UE specific control channel to a user equipment (UE), the first indication indicating a first transmission time interval (TTI) length, wherein a first periodicity of the first UE specific control channel is configurable; and
sending, by the network device, first data to the UE using the first TTI length.
10. The method of claim 9 , further comprising:
sending, by the network device, the first UE specific control channel based on the first periodicity.
11. The method of claim 9 , further comprising:
sending, by the network device, a second indication in a second UE specific control channel to the UE, the second indication indicating a second TTI length, wherein a second periodicity of the second UE specific control channel is configurable; and
sending, by the network device, second data to the UE using the second TTI length.
12. The method of claim 11 , further comprising:
sending, by the network device, the second UE specific control channel based on the second periodicity.
13. The method of claim 11 , wherein the first periodicity of the first UE specific control channel is different from the second periodicity of the second UE specific control channel.
14. The method of claim 11 , wherein the first data is sent in a first frequency bandwidth partition, the second data is sent in a second frequency bandwidth partition, and the first frequency bandwidth partition and the second frequency bandwidth partition occupy different bandwidth partitions within one carrier.
15. The method of claim 9 , further comprising:
sending, by the network device, a first configuration of a third periodicity for searching for a first uplink (UL) grant within a third frequency bandwidth partition.
16. The method of claim 15 , further comprising:
sending, by the network device, a second configuration of a fourth periodicity for searching for a second UL grant within a fourth frequency bandwidth partition, wherein the third periodicity is different from the fourth periodicity, and the third frequency bandwidth partition and the fourth frequency bandwidth partition occupy different bandwidth partition within one carrier.
17. A network device for communicating data, the network device comprising:
a processor; and
a non-transitory computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
send a first indication in a first UE specific control channel to a user equipment (UE), the first indication indicating a first transmission time interval (TTI) length, wherein a first periodicity of the first UE specific control channel is configurable; and
send first data the UE using the first TTI length.
18. The network device of claim 17 , the programming further including instructions to:
send the first UE specific control channel based on the first periodicity.
19. The network device of claim 17 , the programming further including instructions to:
send a second indication in a second UE specific control channel to the UE, the second indication indicating a second TTI length, wherein a second periodicity of the second UE specific control channel is configurable; and
send second data to the UE using the second TTI length.
20. The network device of claim 19 , the programming further including instructions to:
send the second UE specific control channel based on the second periodicity.
21. The network device of claim 19 , wherein the first periodicity of the first UE specific control channel is different from the second periodicity of the second UE specific control channel.
22. The network device of claim 19 , wherein the first data is sent in a first frequency bandwidth partition, the second data is sent in a second frequency bandwidth partition, and the first frequency bandwidth partition and the second frequency bandwidth partition occupy different bandwidth partitions within one carrier.
23. The network device of claim 17 , the programming further including instructions to:
send a first configuration of a third periodicity for searching for a first uplink (UL) grant within a third frequency bandwidth partition.
24. The network device of claim 23 , the programming further including instructions to:
send a second configuration of a fourth periodicity for searching for a second UL grant within a fourth frequency bandwidth partition, wherein the third periodicity is different from the fourth periodicity, and the third frequency bandwidth partition and the fourth frequency bandwidth partition occupy different bandwidth partition within one carrier.
25. An apparatus of communicating data, the apparatus comprising:
a non-transitory memory storage medium comprising instructions; and
one or more processors in communication with the non-transitory memory storage medium, wherein the one or more processors execute the instructions to:
receive a first indication in a first UE specific control channel from a network device, the first indication indicating a first transmission time interval (TTI) length, wherein a first periodicity of the first UE specific control channel is configurable; and
receive first data from the network device using the first TTI length.
26. The apparatus of claim 25 , the one or more processors further execute the instructions to:
search the first UE specific control channel based on the first periodicity.
27. The apparatus of claim 25 , the one or more processors further execute the instructions to:
receive a second indication in a second UE specific control channel from the network device, the second indication indicating a second TTI length, wherein a second periodicity of the second UE specific control channel is configurable; and
receive second data from the network device using the second TTI length.
28. The apparatus of claim 27 , the one or more processors further execute the instructions to:
search the second UE specific control channel based on the second periodicity.
29. The apparatus of claim 27 , wherein the first periodicity of the first UE specific control channel is different from the second periodicity of the second UE specific control channel.
30. The apparatus of claim 27 , wherein the first data is received in a first frequency bandwidth partition, the second data is received in a second frequency bandwidth partition, and the first frequency bandwidth partition and the second frequency bandwidth partition occupy different bandwidth partitions within one carrier.
31. The apparatus of claim 25 , the one or more processors further execute the instructions to:
receive a first configuration of a third periodicity for searching for a first uplink (UL) grant within a third frequency bandwidth partition.
32. The apparatus of claim 31 , the one or more processors further execute the instructions to:
receive a second configuration of a fourth periodicity for searching for a second UL grant within a fourth frequency bandwidth partition, wherein the third periodicity is different from the fourth periodicity, and the third frequency bandwidth partition and the fourth frequency bandwidth partition occupy different bandwidth partition within one carrier.
33. A network system, comprising:
a network entity in a backhaul network communicating with a base station; and
the base station, the base station performs operations of:
sending a first indication in a first UE specific control channel to a user equipment (UE), the first indication indicating a first transmission time interval (TTI) length, wherein a first periodicity of the first UE specific control channel is configurable; and
sending first data to the UE using the first TTI length.
34. The network system of claim 33 , the operations further comprising:
sending the first UE specific control channel based on the first periodicity.
35. The network system of claim 33 , the operations further comprising:
sending a second indication in a second UE specific control channel to the UE, the second indication indicating a second TTI length, wherein a second periodicity of the second UE specific control channel is configurable; and
sending second data to the UE using the second TTI length.
36. The network system of claim 35 , the operations further comprising:
sending the second UE specific control channel based on the second periodicity.
37. The network system of claim 35 , wherein the first periodicity of the first UE specific control channel is different from the second periodicity of the second UE specific control channel.
38. The network system of claim 35 , wherein the first data is sent in a first frequency bandwidth partition, the second data is sent in a second frequency bandwidth partition, and the first frequency bandwidth partition and the second frequency bandwidth partition occupy different bandwidth partitions within one carrier.
39. The network system of claim 33 , the operations further comprising:
sending a first configuration of a third periodicity for searching for a first uplink (UL) grant within a third frequency bandwidth partition.