Traffic data allocations in low latency LTE downlink communications

• US 10,153,875 B2
• Filed: 10/28/2015
• Issued: 12/11/2018
• Est. Priority Date: 12/11/2014
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Patel, Shimman Arvind, Chen, Wanshi, Damnjanovic, Aleksandar, Gaal, Peter, Vajapeyam, Madhavan Srinivasan, Xu, Hao
• Primary Examiner(s): Sefcheck, Gregory B
• Assistant Examiner(s): Van, Jenkey
• Application Number:
  US14/925,501
• Publication Number:
  US 20160173247A1
• Time in Patent Office: 1,140 Days
• Field of Search: None
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

Various aspects are described relating to wireless communications of a second type of traffic data for small data transmissions. A first indication of control channel resources can be received from a network entity, wherein the control channel resources are defined by a radio access technology to include control data associated with a first type of traffic data. A control channel can be received from the network entity over the control channel resources, wherein the control channel includes a second type of traffic data, wherein the second type of traffic data includes a comparatively smaller data payload than the first type of traffic data. The second type of traffic data can be decoded from the control channel without decoding control data from the control channel.

Claims

1. A method of wireless communication, comprising:

receiving a first indication of control channel resources from a network entity, wherein the control channel resources are defined by a radio access technology to include control data associated with a first type of traffic data;

receiving a control channel from the network entity over the control channel resources, wherein the control channel includes a second type of traffic data, wherein the second type of traffic data includes a comparatively smaller data payload than the first type of traffic data;

receiving a group radio network temporary identifier (RNTI) to use in decoding the second type of traffic data from the control channel; and

decoding, based at least in part on the group RNTI, the second type of traffic data from the control channel without decoding control data from the control channel,

wherein the decoding of the second type of traffic data comprises;

searching a grant space of the control channel for grouped traffic data using the group RNTI, wherein the grouped traffic data includes data for multiple user equipment (UEs);

determining, from the grouped traffic data, a resource location of the second type of traffic data within the grouped traffic data assigned to a given UE of the multiple UEs; and

decoding, at the resource location, the second type of traffic data for the given UE.

2. The method of claim 1, further comprising receiving, from the network entity, a retransmission of the second type of traffic data in a subsequent control channel over subsequent control channel resources configured at a fixed period of time from the control channel resources.

3. The method of claim 1, wherein receiving the first indication comprises receiving the first indication of the control channel resources in one or more stages of a multiple stage grant from the network entity.

4. The method of claim 1, wherein the control channel resources correspond to an ultra low latency (ULL) physical downlink control channel (uPDCCH) that is based on a transmission time interval that is less than a subframe in duration.

5. The method of claim 1, wherein receiving the group RNTI comprises receiving, from the network entity, the group RNTI.

6. The method of claim 1, further comprising receiving, from the network entity, an indication of the resource location for the given UE.

7. The method of claim 6, wherein receiving the indication of the resource location for the given UE comprises receiving, from the network entity, the indication of the resource location for the given UE in radio resource control (RRC) layer signaling.

8. A user equipment for wireless communication, comprising:

a transceiver;

at least one processor communicatively coupled with the transceiver, via a bus, for communicating signals in a wireless network; and

a memory communicatively coupled with the at least one processor and/or the transceiver via the bus;

wherein the at least one processor and the memory are operable to;

receive, via the transceiver, a first indication of control channel resources from a network entity, wherein the control channel resources are defined by a radio access technology to include control data associated with a first type of traffic data;

receive, via the transceiver, a control channel from the network entity over the control channel resources, wherein the control channel includes a second type of traffic data, wherein the second type of traffic data includes a comparatively smaller data payload than the first type of traffic data;

receive a group radio network temporary identifier (RNTI) to use in decoding the second type of traffic data from the control channel; and

decode, based at least in part on the group RNTI, the second type of traffic data from the control channel without decoding control data from the control channel,

wherein the at least one processor and memory are operable to decode the second type of traffic data at least in part by;

searching a grant space of the control channel for grouped traffic data using the group RNTI, wherein the grouped traffic data includes data for multiple user equipment (UEs);

determining, from the grouped traffic data, a resource location of the second type of traffic data within the grouped traffic data assigned to the user equipment; and

decoding, at the resource location, the second type of traffic data for the user equipment.

9. The user equipment of claim 8, wherein the at least one processor and the memory are further operable to receive, from the network entity via the transceiver, a retransmission of the second type of traffic data in a subsequent control channel over subsequent control channel resources configured at a fixed period of time from the control channel resources.

10. The user equipment of claim 8, wherein the at least one processor and the memory are operable to receive the first indication of the control channel resources in one or more stages of a multiple stage grant from the network entity.

11. The user equipment of claim 8, wherein the control channel resources correspond to an ultra low latency (ULL) physical downlink control channel (uPDCCH) that is based on a transmission time interval that is less than a subframe in duration.

12. The user equipment of claim 8, wherein the at least one processor and the memory are operable to receive the group RNTI from the network entity.

13. The user equipment of claim 8, wherein the at least one processor and the memory are further operable to receive, from the network entity, an indication of the resource location for the user equipment.

14. The user equipment of claim 13, wherein the at least one processor and the memory are operable to receive the indication of the resource location for the given UE from the network entity in radio resource control (RRC) layer signaling.

16. The user equipment of claim 12, further comprising means for receiving, from the network entity, a retransmission of the second type of traffic data in a subsequent control channel over subsequent control channel resources configured at a fixed period of time from the control channel resources.

17. The user equipment of claim 12, wherein means for receiving receives the first indication of the control channel resources in one or more stages of a multiple stage grant from the network entity.

15. A user equipment for wireless communication, comprising:

means for receiving a first indication of control channel resources from a network entity, wherein the control channel resources are defined by a radio access technology to include control data associated with a first type of traffic data;

means for receiving a control channel from the network entity over the control channel resources, wherein the control channel includes a second type of traffic data, wherein the second type of traffic data includes a comparatively smaller data payload than the first type of traffic data;

means for receiving, from the network entity, a group radio network temporary identifier (RNTI) to use in decoding the second type of traffic data from the control channel; and

means for decoding, based at least in part on the group RNTI, the second type of traffic data from the control channel without decoding control data from the control channel,

wherein the means for decoding decodes the second type of traffic data at least in part by;

searching a grant space of the control channel for grouped traffic data using the group RNTI, wherein the grouped traffic data includes data for multiple user equipment (UEs);

determining, from the grouped traffic data, a resource location of the second type of traffic data within the grouped traffic data assigned to the user equipment and

decoding, at the resource location, the second type of traffic data for the user equipment.

18. The user equipment of claim 15, wherein the means for receiving the group RNTI receives the group RNTI from the network entity.

19. The user equipment of claim 15, further comprising means for receiving, from the network entity, an indication of the resource location for the user equipment.

20. The user equipment of claim 19, wherein the means for receiving the indication of the resource location for the given UE receives the indication of the resource location for the given UE from the network entity in radio resource control (RRC) layer signaling.

21. A non-transitory computer-readable storage medium comprising computer-executable code for wireless communications, the code comprising:

code for receiving a first indication of control channel resources from a network entity, wherein the control channel resources are defined by a radio access technology to include control data associated with a first type of traffic data;

code for receiving a control channel from the network entity over the control channel resources, wherein the control channel includes a second type of traffic data, wherein the second type of traffic data includes a comparatively smaller data payload than the first type of traffic data;

code for receiving, from the network entity, a group radio network temporary identifier (RNTI) to use in decoding the second type of traffic data from the control channel; and

code for decoding, based at least in part on the group RNTI, the second type of traffic data from the control channel without decoding control data from the control channel,

wherein the code for decoding decodes the second type of traffic data at least in part by;

searching a grant space of the control channel for grouped traffic data using the group RNTI, wherein the grouped traffic data includes data for multiple user equipment (UEs);

determining, from the grouped traffic data, a resource location of the second type of traffic data within the grouped traffic data assigned to a given UE of the multiple UEs; and

decoding, at the resource location, the second type of traffic data for the given UE.

22. The non-transitory computer-readable storage medium of claim 21, further comprising code for receiving, from the network entity, a retransmission of the second type of traffic data in a subsequent control channel over subsequent control channel resources configured at a fixed period of time from the control channel resources.

23. The non-transitory computer-readable storage medium of claim 21, wherein code for receiving receives the first indication of the control channel resources in one or more stages of a multiple stage grant from the network entity.

24. The non-transitory computer-readable storage medium of claim 21, wherein the code for receiving the group RNTI receives, from the network entity, the group RNTI.

25. The non-transitory computer-readable storage medium of claim 21, the code further comprising code for receiving, from the network entity, an indication of the resource location for the given UE.

26. The non-transitory computer-readable storage medium of claim 25, wherein the code for receiving the indication of the resource location for the given UE receives, from the network entity, the indication of the resource location for the given UE in radio resource control (RRC) layer signaling.