IP Library Granted Patent US 10,412,679
Granted Patent B2
US 10,412,679 · App. 15/878,331 · Granted Sep 10, 2019

Frame transmission scheme modification

Inventors: Li Su (San Jose, CA); Jianxiong Shi (Dublin, CA)
Assignee: Apple Inc.
H04W52/0261H04L1/189H04L1/1822H04L1/1825H04W28/0221H04W52/228H04W52/24H04W52/245Y02D70/00Y02D70/1242Y02D70/1262Y02D70/1264Y02D70/142Y02D70/144Y02D70/146Y02D70/164Y02D70/166Y02D70/168Y02D70/23Y02D70/24Y02D70/26
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Quick Facts
Patent No.
US 10,412,679
App. No.
15/878,331
Granted
Sep 10, 2019
Kind
B2
Abstract

In some embodiments, an apparatus is configured to wirelessly communicate with a base station in a real-time internet protocol (IP) session using a first retransmission parameter in a first frame transmission scheme. In some embodiments, the apparatus is configured to determine a current performance metric and, based on the current performance metric, negotiate to use a second, different retransmission parameter in a second frame transmission scheme for communications via the real-time IP session. In some embodiments, the retransmission parameter is a number of retransmissions or a number of hybrid automatic repeat request (HARQ) processes.

Claims (30)

1. An apparatus, comprising:

one or more processing elements; and

one or more memories having program instructions stored thereon that are executable by the one or more processing elements to:

wirelessly communicate with a base station, wherein the communication comprises a real-time internet protocol (IP) session, wherein at a first time during the real-time IP session, communication between the apparatus and the base station uses a first retransmission parameter in a first frame transmission scheme;

determine a current performance metric for the apparatus; and

based on the current performance metric, negotiate with the base station to use a second, different retransmission parameter in a second frame transmission scheme for communications via the real-time IP session.

2. The apparatus of claim 1 , wherein the current performance metric is a reference signal received power (RSRP) for signals received from the base station.

3. The apparatus of claim 1 , wherein the first retransmission parameter specifies a first number of repetitions and wherein the second frame transmission scheme specifies using a second number of repetitions that is greater than the first number of repetitions.

4. The apparatus of claim 1 , wherein the negotiation includes the apparatus indicating an increase or decrease in a number of HARQ processes.

5. The apparatus of claim 1 , wherein the current performance metric is based on a voltage corresponding to battery output.

6. The apparatus of claim 5 , wherein the apparatus is configured to refrain from transmitting one or more scheduled uplink retransmissions in response to the voltage dropping below a threshold voltage.

7. The apparatus of claim 1 , wherein the current performance metric comprises a frequency at which a voltage corresponding to battery output drops below a threshold voltage.

8. The apparatus of claim 1 , wherein the apparatus is configured to indicate the current performance metric to the base station as part of the negotiation.

9. The apparatus of claim 1 , wherein the current performance metric comprises a channel quality measurement.

10. The apparatus of claim 1 , wherein the current performance metric comprises audio frame delay.

11. The apparatus of claim 1 , wherein the first frame transmission scheme uses a first payload size, and the second frame transmission scheme uses a second payload size.

12. A non-transitory computer-readable medium having instructions stored thereon that are executable by a mobile computing device to perform operations comprising:

wirelessly communicating with a base station, wherein the communication comprises a real-time internet protocol (IP) session, wherein at a first time during the real-time IP session, communication between the mobile computing device and the base station uses a first retransmission parameter in a first frame transmission scheme;

determining a current performance metric for the mobile computing device; and

based on the current performance metric, negotiating with the base station to use a second, different retransmission parameter in a second frame transmission scheme for communications via the real-time IP session.

13. The non-transitory computer-readable medium of claim 12 , wherein the first retransmission parameter specifies a first number of repetitions and wherein the second frame transmission scheme specifies using a second number of repetitions that is greater than the first number of repetitions.

14. The non-transitory computer-readable medium of claim 12 , wherein the current performance metric is based on a voltage corresponding to battery output of a battery of the mobile computing device.

15. A method, comprising:

wirelessly communicating, by a base station, with a mobile device, wherein the communication comprises a real-time IP session, wherein at a first time during the real-time IP session, communication between the mobile device and the base station uses a first retransmission parameter in a first frame transmission scheme; and

negotiating, by the base station with the mobile device, to use a second, different retransmission parameter in a second frame transmission scheme for communications via the real-time IP session, wherein the negotiation is initiated based on a current performance metric determined by the mobile device.

16. The method of claim 15 , further comprising transmitting reference symbols for use in determining the current performance metric by the mobile device.

17. The method of claim 15 , wherein the first retransmission parameter specifies a first number of repetitions and wherein the second frame transmission scheme specifies using a second number of repetitions that is greater than the first number of repetitions.

18. The method of claim 15 , wherein the negotiating includes receiving an indication from the mobile device to increase or decrease a number of retransmission processes.

19. The method of claim 15 , further comprising receiving an indication of the current performance metric from the mobile device.

20. The method of claim 15 , wherein the first frame transmission scheme uses a first payload size, and the second frame transmission scheme uses a second payload size.

Continuity (5)
Continuation 15076740 · Mar 22, 2016
Provisional Application 62172661 · Jun 8, 2015
Provisional Application 62158279 · May 7, 2015
Provisional Application 62141109 · Mar 31, 2015
Related Publication 20180152895A1 · May 31, 2018