Method, device, and system for scheduling transmission of a status update in a time division multiple access (TDMA) communication system

• US 10,448,392 B2
• Filed: 05/10/2017
• Issued: 10/15/2019
• Est. Priority Date: 05/10/2017
• Status: Active Grant

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola Solutions, Inc.
• Inventors: Yang, Yunhai, McDonald, Daniel J.
• Primary Examiner(s): Mohebbi, Kouroush
• Application Number:
  US15/591,649
• Publication Number:
  US 20180332578A1
• Time in Patent Office: 888 Days
• Field of Search: None
• CPC Class Codes: H04B 7/2653 for logical channel control
• CPC Class Codes: H04J 3/1694 Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers Passive Optical Networks H04Q11/0062
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 72/535 based on resource usage policies

Abstract

A method, device, and system for scheduling a status update in a time division multiple access (TDMA) communication system. One method includes transmitting, with a call controller, scheduling information to the each of the plurality of communication devices via an outbound time slot associated with a control channel of a local common TDMA channel to schedule the each of the plurality of communication devices to transmit the status data in a pre-determined sequence. The method also includes receiving the status data from at least one of the plurality of communication devices in the pre-determined sequence.

Claims

1. A method for scheduling transmission of status data from each of a plurality of communication devices in a time division multiple access (TDMA) communication system, the method comprising:

transmitting, with a call controller, scheduling information to the each of the plurality of communication devices via an outbound time slot associated with a control channel of a local common TDMA channel to schedule the each of the plurality of communication devices to transmit the status data in a pre-determined sequence via a remote common channel, wherein the remote common channel is separate from the local common TDMA channel; and

receiving the status data from at least one of the plurality of communication devices in the pre-determined sequence via a remote inbound time slot of the remote common channel that is synchronized with an inbound time slot of the local common TDMA channel.

2. The method of claim 1, wherein the control channel is a slow associated control channel (SACCH).

3. The method of claim 1, wherein the status data includes location data.

4. The method of claim 1, wherein the status data includes sensor data.

5. The method of claim 1, further comprising:

transmitting, with the call controller, in-call scheduling information to the each of the plurality of communication devices via the outbound time slot of the local common TDMA channel to schedule the each of the plurality of communication devices to transmit the status data in the pre-determined sequence via the remote common channel and the local common TDMA channel; and

receiving the status data from the at least one of the plurality of communication devices in the pre-determined sequence via a second inbound time slot associated with the control channel of the local common TDMA channel.

6. The method of claim 1, further comprising:

transmitting, with the call controller, hang-time scheduling information to the each of the plurality of communication devices via the outbound time slot of the local common TDMA channel to schedule the each of the plurality of communication devices to transmit the status data in the pre-determined sequence via the remote common channel and the local common TDMA channel; and

receiving the status data from the at least one of the plurality of communication devices in the pre-determined sequence via a second inbound time slot of the local common TDMA channel.

7. The method of claim 1, further comprising:

receiving, with the call controller, call data via the local common TDMA channel, wherein the pre-determined sequence includes each ultraframe of the local common TDMA channel.

8. The method of claim 1, further comprising:

not receiving, with the call controller, call data via the local common TDMA channel, wherein the pre-determined sequence includes each frame of the local common TDMA channel.

9. A method for scheduling transmission of status data from each of a plurality of communication devices in a time division multiple access (TDMA) communication system, the method comprising:

transmitting, with a call controller, scheduling information to the each of the plurality of communication devices via an outbound time slot associated with a control channel of a local common TDMA channel to schedule the each of the plurality of communication devices to transmit the status data in a pre-determined sequence;

receiving the status data from at least one of the plurality of communication devices in the pre-determined sequence; and

transmitting, with the call controller, adjusted scheduling information to the each of the plurality of communication devices via the outbound time slot associated with the control channel of the local common TDMA channel to schedule the each of the plurality of communication devices to transmit the status data in a second pre-determined sequence in response to not receiving the status data from the each of the plurality of communication devices in the pre-determined sequence, the second pre-determined sequence being different than the pre-determined sequence.

10. A portable communication device comprising:

communication circuitry configured to communicate with a call controller; and

an electronic processor communicatively connected to the communication circuitry, the electronic processor configured to

receive scheduling information from the call controller via an outbound time slot associated with a control channel of a local common time division multiple access (TDMA) channel; and

transmit status data during an inbound time slot based on the scheduling information received from the call controller; and

a positioning transceiver,

wherein the status data includes location data determined by the positioning transceiver.

11. The portable communication device of claim 10, wherein the control channel is a slow associated control channel (SACCH).

12. The portable communication device of claim 10, further comprising a sensor and wherein the status data includes data detected by the sensor.

13. The portable communication device of claim 12, wherein the sensor includes at least one selected from a group consisting of an image sensor, a health monitor, a motion sensor, a holster sensor, and a microphone.

14. The portable communication device of claim 10, wherein the scheduling information is in-call scheduling information and wherein the electronic processor is configured to transmit the status data by transmitting the status data via an inbound time slot associated with the control channel of the local common TDMA channel.

15. The portable communication device of claim 10, wherein the electronic processor is further configured to receive hang-time scheduling information from the call controller via a second outbound time slot of the local common TDMA channel, and wherein the electronic processor is further configured to transmit the status data by transmitting the status data via an inbound time slot of the local common TDMA channel.

16. A time division multiple access (TDMA) communication system comprising:

a call controller including

an electronic processor configured to

transmit scheduling information to each of a plurality of communication devices via an outbound time slot associated with a control channel of a local common TDMA channel to schedule the each of the plurality of communication devices to transmit status data in a pre-determined sequence, and

receive the status data from at least one of the plurality of communication devices in the pre-determined sequence, and

wherein one of the plurality of communication devices includes

a portable communication device including a device electronic processor configured to

receive the scheduling information from the call controller, and

transmit the status data via a remote inbound time slot of a remote common channel synchronized with an inbound time slot the local common TDMA channel.

17. The TDMA communication system of claim 16, wherein a second one of the plurality of communication devices includes

a second portable communication device including

a second device electronic processor configured to

receive the scheduling information from the call controller via a second inbound time slot associated with the control channel of the local common TDMA channel, and

transmit the status data during a second outbound time slot based on the scheduling information that is received from the call controller.