Adaptive uplink/downlink timeslot assignment in a hybrid wireless time division multiple access/code division multiple access communication system

• US 9,894,655 B2
• Filed: 03/27/2017
• Issued: 02/13/2018
• Est. Priority Date: 07/27/2000
• Status: Expired due to Fees

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Pan, Kyle Jung-Lin, Zeira, Ariela
• Primary Examiner(s): Patel, Jay P
• Application Number:
  US15/470,292
• Publication Number:
  US 20170201991A1
• Time in Patent Office: 323 Days
• CPC Class Codes: H04B 7/2618 using hybrid code-time division multiple access [CDMA-TDMA]
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/1273 of downlink data flows
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

A wireless network device may receive a first list indicating a first assignment for uplink and downlink time intervals in a time division duplex (TDD) frame and determine at least first downlink time intervals based on the first list. The device may receive a second list indicating a second assignment for uplink and downlink time intervals in a TDD frame and determine at least first uplink time intervals based on the second list. The device may determine at least second downlink time intervals and second uplink time intervals based on a third list, wherein the third list indicates a third assignment for uplink and downlink time intervals in a TDD frame, and wherein the second downlink time intervals include downlink time intervals of at least the first downlink time intervals and the second uplink time intervals include uplink time intervals of at least the first uplink time intervals.

Claims

1. A first wireless device comprising:

a receiver configured to receive a first list indicating a first assignment for uplink and downlink time intervals in a time division duplex (TDD) frame;

a controller configured to determine at least first downlink time intervals for communication in a TDD frame based on the first list;

the receiver further configured to receive a second list indicating a second assignment for uplink and downlink time intervals in a TDD frame;

the controller further configured to determine at least first uplink time intervals for communication in a TDD frame based on the second list;

the controller further configured to determine at least second downlink time intervals and second uplink time intervals for communication in a TDD frame based on a third list, wherein the third list indicates a third assignment for uplink and downlink time intervals in a TDD frame, and wherein the second downlink time intervals include downlink time intervals of at least the first downlink time intervals and the second uplink time intervals include uplink time intervals of at least the first uplink time intervals; and

the receiver configured to communicate, with a second wireless device during at least one TDD frame for communication, in the downlink based on at least the second downlink time intervals and,

in the uplink based on at least the second uplink time intervals.

2. The first wireless device of claim 1, wherein the third list dynamically changes.

3. The first wireless device of claim 2, wherein the third list dynamically changes on a TDD frame basis.

4. The first wireless device of claim 1, wherein the first list and the second list are received from the second wireless device.

5. The first wireless device of claim 1, wherein the first list is received from the second wireless device and the second list is received from a third wireless device.

6. The first wireless device of claim 1, wherein the first list is received from the third wireless device and the second list is received from the second wireless device.

7. The first wireless device of claim 1, wherein each time interval includes at least one time slot.

8. The first wireless device of claim 1, wherein the first wireless device and the second wireless device are network nodes.

9. The first wireless device of claim 1, wherein the receiver is further configured to receive the third list.

10. The first wireless device of claim 1, wherein at least one of the first assignment and the second assignment is the same as the third assignment.

11. A method comprising:

receiving, by a first wireless device, a first list indicating a first assignment for uplink and downlink time intervals in a time division duplex (TDD) frame;

determining, by the first wireless device, at least first downlink time intervals for communication in a TDD frame based on the first list;

receiving, by the first wireless device, a second list indicating a second assignment for uplink and downlink time intervals in a TDD frame;

determining, by the first wireless device, at least first uplink time intervals for communication in a TDD frame based on the second list;

determining, by the first wireless device, at least second downlink time intervals and second uplink time intervals for communication in a TDD frame based on a third list, wherein the third list indicates a third assignment for uplink and downlink time intervals in a TDD frame, and wherein the second downlink time intervals include downlink time intervals of at least the first downlink time intervals and the second uplink time intervals include uplink time intervals of at least the first uplink time intervals; and

communicating, by the first wireless device with a second wireless device during at least one TDD frame for communication, in the downlink based on at least the second downlink time intervals, and

in the uplink based on at least the second uplink time intervals.

12. The method of claim 11, wherein the third list dynamically changes.

13. The method of claim 11, wherein the third list dynamically changes on a TDD frame basis.

14. The method of claim 11, wherein the first list and the second list are received from the second wireless device.

15. The method of claim 11, wherein the first list is received from the second wireless device and the second list is received from a third wireless device.

16. The method of claim 11, wherein the first list is received from the third wireless device and the second list is received from the second wireless device.

17. The method of claim 11, wherein each time interval includes at least one time slot.

18. The method of claim 11, wherein the first wireless device and the second wireless device are network nodes.

19. The method of claim 11, further comprising:

receiving, by the first wireless device, the third list.

20. The method of claim 11, wherein at least one of the first assignment and the second assignment is the same as the third assignment.