Enhanced location data throughput on a windowed data channel in a radio communication system

• US 9,473,882 B2
• Filed: 06/16/2014
• Issued: 10/18/2016
• Est. Priority Date: 06/16/2014
• Status: Active Grant

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola Solutions, Inc.
• Inventors: Khoo, Hun Weng, Chowdhary, Dipendra M, Chung, Yueh Ching, Li, Xiao-Yu
• Primary Examiner(s): HUYNH, KHOA B
• Application Number:
  US14/305,345
• Publication Number:
  US 20150365920A1
• Time in Patent Office: 855 Days
• US Class Current: 1/1
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

A method for enhanced data throughput on a windowed revert repeater channel in a radio communication system includes requesting, by a subscriber unit and via a control channel of the radio communication system, a window in which to transmit data updates on the windowed revert repeater channel of the radio communication system; receiving, by the subscriber unit and via the control channel, an assigned window on the windowed revert repeater channel for the data updates; monitoring, by the subscriber unit, the control channel repeater and determining a timing of the windowed revert repeater channel based on the monitoring; and reverting to the windowed revert repeater channel based on the timing and the assigned window, and transmitting the data updates during the assigned window. A subscriber unit and radio communication system are also disclosed.

Claims

1. A method for enhanced data throughput on a windowed revert repeater channel in a radio communication system, the method comprising:

requesting, by a subscriber unit and via a control channel of the radio communication system, a window in which to transmit data updates on the windowed revert repeater channel of the radio communication system;

receiving, by the subscriber unit and via the control channel, an assigned window on the windowed revert repeater channel for the data updates;

monitoring, by the subscriber unit, the control channel repeater and determining a timing of the windowed revert repeater channel based on the monitoring;

reverting to the windowed revert repeater channel based on the timing and the assigned window, and transmitting the data updates during the assigned window; and

receiving the assigned window on the control channel from infrastructure of the radio communication system with a slot number on the windowed revert repeater channel;

reverting to the windowed revert repeater channel based on the timing to transmit in the assigned window for a long burst;

returning to the control channel after the long burst; and

holding a call grant for a talkgroup associated with the subscribed unit until the subscriber unit returns to the control channel.

2. The method of claim 1, further comprising:

requesting the assigned window via a request during registration or via an explicit request subsequent to registration, wherein the request comprises an update rate and a window size associated with the data updates.

3. The method of claim 1, wherein the windowed revert repeater channel comprises one of a plurality of windowed revert repeater channels in the radio communication system, and wherein the subscriber unit is assigned to the windowed revert repeater channel and does not need to be reprogrammed when another windowed revert repeater channel is added to the radio communication system.

4. The method of claim 1, further comprising:

determining a physical frequency of the windowed revert repeater channel based on its associated channel identifier.

5. The method of claim 1, wherein the control channel and the windowed revert repeater channel are synchronized therebetween, and wherein the determining of the timing of the window based on the monitoring comprises receiving window timing based on broadcasts on the control channel repeater including a current window number therein.

6. The method of claim 5, wherein the broadcasts comprise Common Announcement Channel (CACH) short Link Control (LC) transmissions or window announcement control signaling block (CSBK) with a current window number broadcast contained therein.

7. The method of claim 5, wherein the current window number broadcast is incremented in a window size of one, wherein the windowed data revert channel comprises a window size of N, N being an integer, and wherein the subscriber unit determines the next attempt window based on the current window number and update rate.

8. The method of claim 1, further comprising:

reverting to the windowed revert repeater channel based on the timing to transmit in the assigned window for a single burst;

returning to the control channel after the single burst; and

avoiding a late entry into a new call due to a new call grant being repeated twice with appropriate timing in between and since the subscriber unit is away from the control channel for the single burst.