Control signaling optimization for LTE communications

• US 10,631,328 B2
• Filed: 02/11/2019
• Issued: 04/21/2020
• Est. Priority Date: 09/30/2013
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Tabet, Tarik, Majjigi, Vinay R., Mucke, Christian W., Mujtaba, Syed A.
• Primary Examiner(s): Abelson, Ronald B
• Application Number:
  US16/272,637
• Publication Number:
  US 20190313435A1
• Time in Patent Office: 435 Days
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 28/0221 power availability or consumption
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The disclosure describes procedures for allocating network resources for a mobile device communicating within a Long Term Evolution (LTE) network. The mobile device can be configured to decode a physical downlink shared channel (PDSCH), acquire first and second physical downlink control channel (PDCCH) decode indicators from a payload of the same PDSCH communication, decode a PDCCH for downlink control information (DCI) associated with a first application data type based on the first PDCCH decode indicator a second application data type based on the second PDCCH decode indicator. The first PDCCH decode indicator can identify an upcoming LTE subframe where the mobile device is required to decode the PDCCH for DCI associated VoLTE resource assignments and the second PDCCH decode indicator can identify an upcoming LTE subframe where the mobile device is required to decode the PDCCH for DCI associated with high bandwidth best effort (BE) data resource assignments.

Claims

1. A method for reducing power consumption by a user equipment (UE) communicating within a cellular wireless network, the method comprising:

by a network apparatus of the cellular wireless network;

generating downlink control information (DCI) that indicates a future resource assignment for the UE on a physical downlink shared channel (PDSCH); and

sending, to the UE at a static reserved resource block location or at a dynamic resource block location, the DCI in a PDSCH payload;

wherein;

inclusion of the DCI in the PDSCH payload allows the UE to refrain from decoding a physical downlink control channel (PDCCH) until after receipt of the DCI via the PDSCH.

2. The method of claim 1, wherein the future resource assignment comprises i) a future downlink resource assignment for the UE on the PDSCH or ii) a future uplink grant for the UE on a physical uplink shared channel (PUSCH).

3. The method of claim 1, wherein:

the network apparatus sends the DCI at the dynamic resource block location; and

the method further comprises the network apparatus selecting the dynamic resource block location based at least in part on a downlink resource assignment condition.

4. The method of claim 3, wherein the downlink resource assignment condition comprises a payload allocation size for the PDSCH payload permits inclusion of the DCI.

5. The method of claim 1, wherein the UE operates in a long term evolution (LTE) radio resource control (RRC) connected mode while the network apparatus sends the DCI to the UE.

6. The method of claim 1, wherein the network apparatus sends the DCI to the UE during a designated time interval during which the UE refrains from decoding the PDCCH until after receipt of the DCI via the PDSCH.

7. The method of claim 6, wherein the designated time interval spans one or more long term evolution (LTE) subframes.

8. The method of claim 6, wherein the network apparatus designates the designated time interval to the UE.

9. The method of claim 1, wherein the DCI indicates to the UE where to decode the PDSCH for one or more subsequent PDSCH communications.

10. A network apparatus, comprising:

one or more transceivers configurable to communicate via a cellular wireless network;

one or more processors communicatively coupled to the one or more transceivers; and

a storage device communicatively coupled to the one or more processors and storing instructions that, when executed by the one or more processors, cause the network apparatus to perform actions including;

generating downlink control information (DCI) that indicates a future resource assignment for a user equipment (UE) on a physical downlink shared channel (PDSCH); and

sending, to the UE at a static reserved resource block location or at a dynamic resource block location, the DCI in a PDSCH payload;

wherein;

inclusion of the DCI in the PDSCH payload allows the UE to refrain from decoding a physical downlink control channel (PDCCH) until after receipt of the DCI via the PDSCH.

11. The network apparatus of claim 10, wherein the future resource assignment comprises i) a future downlink resource assignment for the UE on the PDSCH or ii) a future uplink grant for the UE on a physical uplink shared channel (PUSCH).

12. The network apparatus of claim 10, wherein:

the network apparatus sends the DCI at the dynamic resource block location; and

the actions further comprise the network apparatus selecting the dynamic resource block location based at least in part on a downlink resource assignment condition.

13. The network apparatus of claim 12, wherein the downlink resource assignment condition comprises a payload allocation size for the PDSCH payload permits inclusion of the DCI.

14. The network apparatus of claim 10, wherein the UE operates in a long term evolution (LTE) radio resource control (RRC) connected mode while the network apparatus sends the DCI to the UE.

15. The network apparatus of claim 10, wherein the network apparatus sends the DCI to the UE during a designated time interval during which the UE refrains from decoding the PDCCH until after receipt of the DCI via the PDSCH.

16. The network apparatus of claim 15, wherein the designated time interval spans one or more long term evolution (LTE) subframes.

17. The network apparatus of claim 15, wherein the network apparatus designates the designated time interval to the UE.

18. The network apparatus of claim 10, wherein the DCI indicates to the UE where to decode the PDSCH for one or more subsequent PDSCH communications.

19. A method for reducing power consumption by a user equipment (UE) communicating within a cellular wireless network, the method comprising:

by the UE, during a designated time interval;

refraining from decoding a PDCCH until after receipt of downlink control information (DCI) in a physical downlink shared channel (PDSCH) payload received from a network apparatus of the cellular wireless network;

receiving, from the network apparatus at a static resource block location or at a dynamic resource block location, the PDSCH payload including the DCI;

decoding the PDSCH payload to obtain the DCI; and

decoding the PDCCH based on the DCI.

20. The method of claim 19, wherein:

the UE receives the PDSCH payload including the DCI from the network apparatus at the dynamic resource block location; and

the dynamic resource block location is based at least in part on a payload allocation size for the PDSCH payload permitting inclusion of the DCI.