System and method for distributed scheduling of transmission resources

• US 9,844,033 B2
• Filed: 02/26/2016
• Issued: 12/12/2017
• Est. Priority Date: 03/09/2015
• Status: Active Grant

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Akyurek, Alper S., Xhafa, Ariton E., Zhou, Jianwei, Vedantham, Ramanuja
• Primary Examiner(s): Alam, Fayyaz
• Application Number:
  US15/054,508
• Publication Number:
  US 20160270068A1
• Time in Patent Office: 655 Days
• Field of Search: 455450-455, 455502, 455509, 370310-320
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

In accordance with various embodiments, a system and method of distributed transmission resource management in a wireless network is disclosed. The transmission resource allocation is distributed throughout the network to all nodes. In distributed resource management, the resource allocation may be performed by child and/or remote nodes and child and/or remote nodes actively manage transmission resource allocation in the wireless network.

Claims

1. A network element comprising:

a transceiver configured to receive network transmissions; and

a processor coupled to the transceiver, the processor is configured to select at least one transmission resource in response to the network transmissions,

select a parent network node in a wireless communication network,

transmit by the transceiver a request to establish a communication with the selected parent network node using the selected transmission resource,

receive permission from the parent network node to use the selected transmission resource, and

establish the communication with the parent network node using the selected transmission resource.

2. The network element of claim 1, wherein the network element is a lower layer network node in the wireless communication network, and the parent network node is a higher layer network node in the wireless communication network.

3. The network element of claim 1, wherein the processor is further configured to broadcast transmission resource usage in the wireless network, wherein the broadcast indicates the at least one transmission resource as a resource allocated to the network element for communication in the wireless communication network.

4. The network element of claim 3, wherein the processor is configured to broadcast the transmission resource usage in a beacon transmission.

5. The network element of claim 3, wherein the broadcast identifies a plurality of transmission resources allocated to the network element for communication in the wireless communication network.

6. The network element of claim 1, wherein the transmission resource includes one or more of a communication timeslot and a channel offset.

7. The network element of claim 1, wherein the processor is further configured to determine whether one or more of a Received Signal Strength Indicator (RSI) or a number of retransmissions on the identified transmission resource is within a predetermined range, and

release the transmission resource if the RSSI or the number of retransmissions on the identified transmission resource is not within the predetermined range for a predetermined period of time.

8. The network element of claim 1, wherein the parent node is a central node in the wireless communication network.

9. A method comprising:

receiving network transmissions in a wireless communication network;

selecting, by a lower layer network element, at least one transmission resource for communication in the wireless communication network in response to the network transmissions;

selecting a network node in the wireless communication network;

transmitting a request to establish a communication with the selected network node using the selected transmission resource;

receiving permission from the network node to use the selected transmission resource; and

establishing the communication with the network node using the selected transmission resource.

10. The method of claim 9, wherein the network node is a higher layer network node in the wireless communication network.

11. The method of claim 10, further comprising:

broadcasting transmission resource usage in the wireless communication network, wherein the broadcasting indicates the at least one transmission resource as a resource allocated to the lower layer network element for communication in the wireless communication network.

12. The method of claim 11, wherein the transmission resource usage is broadcasted in a beacon transmission.

13. The method of claim 11, wherein the broadcast identifies a plurality of transmission resources allocated to the lower layer network element for communication in the wireless communication network.

14. The method of claim 9, wherein the transmission resource includes one or more of a communication timeslot and a channel offset.

15. The method of claim 9, further comprising:

determining whether one or more of a Received Signal Strength Indicator (RSSI) or a number of retransmissions on the identified transmission resource is within a predetermined range, and

releasing the transmission resource, if the RSSI or the number of retransmissions on the identified transmission resource is not within the predetermined range for a predetermined period of time.

16. A method of operating a network node, comprising:

selecting at least one transmission resource by the network node for communication in a wireless communication network;

selecting a higher layer network node in the wireless communication network;

transmitting a request to establish a communication with the selected higher layer network node using the selected transmission resource;

receiving permission from the selected higher layer network node to use the selected transmission resource; and

establishing the communication with the selected higher layer network node using the selected transmission resource.

17. The method of claim 16, comprising:

determining at least one transmission condition of the at least one transmission resource;

entering into a probing state for a predetermined period of time, if the transmission condition of the at least one transmission resource not within a predetermined range; and

releasing the transmission resource, if the transmission condition of the at least one transmission resource is not within the predetermined range for a predetermined period of time.

18. The method of claim 17, wherein the transmission condition includes one or more of a Received Signal Strength Indicator (RSSI), and a number of retransmissions on the at least one transmission resource.

19. The method of claim 16, wherein the network node is further configured to broadcast a beacon in the wireless communication network, wherein the beacon identifies the at least one transmission resource as a resource allocated to the apparatus for communication in the wireless communication network.

20. The method of claim 16, wherein the transmission resource includes one or more of a communication timeslot and a channel offset.