RESERVED RESOURCE POOL ASSISTED ACCESS RESOURCE SELECTION FOR SMALL DATA TRANSMISSION

• US 20160270053A1
• Filed: 10/29/2015
• Published: 09/15/2016
• Est. Priority Date: 03/14/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Zeng, Wei, Soriaga, Joseph Binamira, Ji, Tingfang, Smee, John Edward, Bhushan, Naga
• Granted Patent: US 10,285,180 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04W 28/26 Resource reservation
• CPC Class Codes: H04W 52/0212 managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 52/028 switching on or off only a part of the equipment circuit blocks
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 74/004 in the uplink, i.e. towards network
• CPC Class Codes: H04W 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Wireless communications systems and methods related to the reduction in a probability of collision for grant-less transmissions from internet of everything (IOE) devices while not increasing search complexity at a base station are disclosed. An IOE device randomly selects a first access resource from a common pool that the base station searches to initiate a transmission. If a metric associated with the data transmission is predicted to exceed a threshold, the IOE device also requests a second access resource from a reserved access pool from the base station, that the base station does not search. The IOE includes the request in the data transmission. The base station and the IOE device switch to the second access resource after the base station identifies an available resource from the reserved access pool and the IOE device completes the data transmission using the second access resource.

Claims

1. A method for wireless communication, comprising:

transmitting, from a first wireless communications device to a second wireless communications device, a first set of data using a first access resource selected from a common pool of access resources as part of a grant-less transmission;

requesting, by the first wireless communications device, the second wireless communications device to provide a second access resource from a reserved access pool based on a metric; and

transmitting, by the first wireless communications device, a second set of data to the second wireless communications device using the second access resource after transitioning to the second access resource.

2. The method of claim 1, further comprising:

receiving an acknowledgement from the second wireless communications device comprising an identification of the second access resource; and

completing the transmitting using the second access resource, wherein the second set of data includes a remaining amount of data to the first set of data.

3. The method of claim 1, further comprising:

selecting, by the first wireless communications device, the first access resource before the transmitting the first set of data,

wherein the first access resource is selected randomly from the common pool.

4. The method of claim 1, wherein:

copies of the common pool and the reserved access pool are stored in a memory of the first wireless communications device, and

the common pool of access resources and the reserved access pool each comprises at least one of scrambling code/access time pairs or interleaver/access time pairs.

5. The method of claim 1, wherein the requesting further comprises:

setting a flag in a header of the first set of data to identify the request for the second access resource.

6. The method of claim 1, wherein the metric comprises a transmission metric and the determination comprises:

analyzing, by the first wireless communications device, a downlink message from the second wireless communications device prior to initiating the transmission of the first set of data;

predicting, by the first wireless communications device, the transmission metric for the transmission of data based at least in part of the analysis of the downlink message; and

comparing, by the first wireless communications device, the predicted transmission metric with a threshold to determine if the predicted transmission metric exceeds the threshold.

7. The method of claim 1, wherein the metric comprises a transmission metric, the method further comprising:

determining, by the first wireless communications device, the transmission metric during the transmitting of the first set of data;

comparing, by the first wireless communications device, the determined transmission metric with a threshold during the transmitting of the first subset of the data to determine if the determined transmission metric exceeds the threshold; and

including, as part of the first set of data, the request for the second wireless communication device to provide the second access resource in response to the comparing.

8. The method of claim 1, wherein the first wireless communications device is an Internet of Everything (IOE) device and the second wireless communications device is a base station.

9. A method for wireless communication, comprising:

searching, by a first wireless communications device, a common pool of access resources to recover a first set of data received from a second wireless communications device using a first access resource selected from the common pool of access resources as part of a grant-less transmission;

receiving, at the first wireless communications device, a request from the second wireless communications device to provide a second access resource selected from a reserved access pool to the second wireless communications device;

transmitting an identification of the second access resource selected from the reserved access pool to the second wireless communications device; and

switching to the second access resource to recover a second set of data from the second wireless communications device without searching the reserved access pool.

10. The method of claim 9, further comprising:

maintaining the reserved access pool comprising a first subset of access resources of the reserved access pool that are available and a second subset of access resources that are not available;

selecting the second access resource from among the first subset of access resources in response to receiving the request from the second wireless communication device; and

transmitting the identification of the second access resource as part of an acknowledgement of the request.

11. The method of claim 9, wherein the receiving the request further comprises:

receiving the request as part of the first set of data from the second wireless communications device.

12. The method of claim 9, wherein the receiving the request further comprises:

receiving the request using the first access resource after receiving at least a portion of the first set of data.

13. The method of claim 9, wherein the common pool of access resources and the reserved access pool each comprises at least one of scrambling code/access time pairs or interleaver/access time pairs.

14. The method of claim 9, further comprising:

determining a range of access resources to include in the common pool of access resources and in the reserved access pool; and

transmitting, from the first wireless communications device, copies of the determined common pool of access resources and the reserved access pool to the second wireless communications device.

15. The method of claim 9, wherein the first wireless communications device is a base station and the second wireless communications device is a user equipment.

16. A first wireless communications device, comprising:

a processor configured to select a first access resource from a common pool of access resources as part of a grant-less transmission to a second wireless communications device and, based on a metric, request the second wireless communications device to provide a second access resource from a reserved access pool; and

a transceiver configured to transmit a first set of data to the second wireless communications device using the first access resource, wherein the first set of data includes the request for the second access resource in response to the determination,

the transceiver being further configured to transmit a second set of data to the second wireless communications device using the second access resource.

17. The first wireless communications device of claim 16, wherein the transceiver is further configured to:

receive an acknowledgement from the second wireless communications device comprising an identification of the second access resource; and

complete transmission of the second set of data using the second access resource, wherein the second set of data includes a remaining amount of data to the first set of data.

18. The first wireless communications device of claim 16, further comprising:

a memory configured to store the common pool of access resources and the reserved access pool,

wherein the common pool of access resources and the reserved access pool each comprises at least one of scrambling code/access time pairs or interleaver/access time pairs.

19. The first wireless communications device of claim 16, wherein the processor is further configured to select the first access resource randomly from the common pool.

20. The first wireless communications device of claim 16, wherein the processor is further configured to set a flag in a header of the first set of data to identify the request for the second access resource.

21. The first wireless communications device of claim 16, wherein the metric comprises a transmission metric and the processor is further configured to:

analyze a downlink message from the second wireless communications device prior to initiating the transmission of the first set of data;

predict the transmission metric for the transmission of data based at least in part of the analysis of the downlink message; and

compare the predicted transmission metric with a threshold to determine if the predicted transmission metric exceeds the threshold.

22. The first wireless communications device of claim 16, wherein the metric comprises a transmission metric and the processor is further configured to:

determine the transmission metric during the transmission of the first set of data;

compare the determined transmission metric with a threshold during the transmission of the first subset of the data to determine if the determined transmission metric exceeds the threshold; and

include, as part of the first set of data, the request for the second wireless communications device to provide to the second access resource in response to the comparing.

23. The communications device of claim 16, wherein the first wireless communications device comprises an internet of everything device and the second wireless communications device comprises a base station.

24. A first wireless communications device, comprising:

a transceiver configured to receive a first set of data from a second wireless communications device, wherein the first set of data is transmitted using a first access resource selected from a common pool of access resources as part of a grant-less transmission from the second wireless communications device;

a resource coordinator configured to search the common pool of access resources to recover the first set of data received from the second wireless communications device,

wherein the transceiver is further configured to receive a request from the second wireless communications device to provide a second access resource selected from a reserved access pool and transmit an identification of the second access resource selected from the reserved access pool to the second wireless communications device; and

a processor configured to switch the transceiver to the second access resource to recover a second set of data from the second wireless communications device without searching the reserved access pool.

25. The first wireless communications device of claim 24, wherein:

the resource coordinator is further configured to;

maintain the reserved access pool comprising a first subset of access resources of the reserved access pool that are available and a second subset of access resources that are not available; and

select the second access resource from among the first subset of access resources in response to receiving the request from the second wireless communication device; and

the transceiver is further configured to transmit the identification of the second access resource as part of an acknowledgement of the request.

26. The first wireless communications device of claim 24, wherein the transceiver is further configured to receive the request as part of the first set of data from the second wireless communications device.

27. The first wireless communications device of claim 24, wherein the transceiver is further configured to receive the request using the first access resource after receiving at least a portion of the first set of data.

28. The first wireless communications device of claim 24, wherein the common pool of access resources and the reserved access pool each comprises at least one of scrambling code/access time pairs or interleaver/access time pairs.

29. The first wireless communications device of claim 24, wherein:

the processor is further configured to determine a range of access resources to include in the common pool of access resources and in the reserved access pool; and

the transceiver is further configured to transmit the determined common pool of access resources and the reserved access pool to the second wireless communications device.

30. The first wireless communications device of claim 24, wherein the first wireless communications device comprises a base station and the second wireless communications device comprises an internet of everything device.