Ready timer period splitting for extended coverage global system for mobile communications (EC-GSM)

Patent metadata

Field	Value
Publication number	US-10136390-B2
Application number	US-201715489458-A
Country	US
Kind code	B2
Filing date	Apr 17, 2017
Priority date	May 22, 2015
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

A core network node (e.g., Serving GPRS Support Node (SGSN)), a radio access network node (e.g., Base Station Subsystem), a wireless device, and various methods are described herein for splitting a period of a ready timer to allow for different periodicities of reachability for the wireless device.

First claim

The invention claimed is:

1. A wireless device comprising:
a processor; and
a memory that stores processor-executable instructions, wherein the processor interfaces with the memory to execute the processor-executable instructions, whereby the wireless device is operable to:
transmit uplink data blocks; and
receive an extended coverage packet uplink acknowledgment/non-acknowledgment (EC-PUAN) message,
wherein the EC-PUAN message includes an indication that the wireless device is to enter an extended uplink Temporary Block Flow (TBF) mode where the wireless device is further operable to: monitor, per a first periodicity of reachability for a first period of time, a downlink extended coverage packet associated control channel (EC-PACCH) to allow reception of an extended coverage packet downlink assignment (EC-PDA) message intended for the wireless device; and
wherein the wireless device upon failing to receive the EC-PDA message during the first period of time is operable to: enter an idle mode, and monitor, per a second periodicity of reachability for a second period of time, an extended coverage access grant channel (EC-AGCH).

2. The wireless device of claim 1 , wherein the wireless device upon receiving the EC-PUAN message which indicates that all of the uplink data blocks have been successfully transmitted is further operable to start a ready timer and start a timer that determines the first period of time.

3. The wireless device of claim 1 , wherein the first periodicity of reachability is more frequent than the second periodicity of reachability.

4. The wireless device of claim 1 , wherein the first periodicity of reachability is same as the second periodicity of reachability.

5. The wireless device of claim 1 , wherein a sum of the first period of time and the second period of time is equal to a period of a ready timer.

6. The wireless device of claim 1 , wherein the wireless device is operable to monitor the EC-PACCH according to a coverage class of the wireless device.

7. The wireless device of claim 1 , wherein the wireless device upon receiving the EC-PDA message during the first period of time is operable to:
establish a downlink TBF;
receive a set of downlink data blocks;
transmit an extended coverage packet downlink acknowledgment/non-acknowledgment (EC-PDAN) message confirming receipt of the downlink data blocks;
release assigned extended coverage packet data traffic channel (EC-PDTCH) resources; and
enter the idle mode.

8. The wireless device of claim 1 , wherein the wireless device monitors, per the second periodicity of reachability for the second period of time, the EC-AGCH to allow reception of an extended coverage immediate assignment (EC-IA) message intended for the wireless device.

9. A method in a wireless device, the method comprising:
transmitting uplink data blocks; and
receiving an extended coverage packet uplink acknowledgment/non-acknowledgment (EC-PUAN) message,
wherein the EC-PUAN message includes an indication that the wireless device is to enter an extended uplink Temporary Block Flow (TBF) mode where the wireless device performs a step of monitoring, per a first periodicity of reachability for a first period of time, a downlink extended coverage packet associated control channel (EC-PACCH) to allow reception of an extended coverage packet downlink assignment (EC-PDA) message intended for the wireless device; and
wherein the wireless device upon failing to receive the EC-PDA message during the first period of time performs steps of entering an idle mode and, monitoring, per a second periodicity of reachability for a second period of time, an extended coverage access grant channel (EC-AGCH).

10. The method of claim 9 , wherein the wireless device upon receiving the EC-PUAN message which indicates that all of the uplink data blocks have been successfully transmitted further performs steps of starting a ready timer and starting a timer that determines the first period of time.

11. The method of claim 9 , wherein the first periodicity of reachability is more frequent than the second periodicity of reachability.

12. The method of claim 9 , wherein the first periodicity of reachability is same as the second periodicity of reachability.

13. The method of claim 9 , wherein a sum of the first period of time and the second period of time is equal to a period of a ready timer.

14. The method of claim 9 , wherein the wireless device monitors the EC-PACCH according to a coverage class of the wireless device.

15. The method of claim 9 , wherein the wireless device upon receiving the EC-PDA message during the first period of time further performs steps of:
establishing a downlink TBF;
receiving a set of downlink data blocks;
transmitting an extended coverage packet downlink acknowledgment/non-acknowledgment (EC-PDAN) message confirming receipt of the downlink data blocks;
releasing assigned extended coverage packet data traffic channel (EC-PDTCH) resources; and
entering the idle mode.

16. The method of claim 9 , wherein the wireless device monitors, per the second periodicity of reachability for the second period of time, the EC-AGCH to allow reception of an extended coverage immediate assignment (EC-IA) message intended for the wireless device.

17. A radio access network (RAN) node configured to interact with a wireless device, the RAN node comprising:
a processor; and
a memory that stores processor-executable instructions, wherein the processor interfaces with the memory to execute the processor-executable instructions, whereby the RAN node is operable to:
receive, from the wireless device, uplink data blocks; and
transmit, to the wireless device, an extended coverage packet uplink acknowledgment/non-acknowledgment (EC-PUAN) message,
wherein the EC-PUAN message includes an indication that the wireless device is to enter an extended uplink Temporary Block Flow (TBF) mode or an idle mode; and
wherein the RAN node is further operable when the wireless device is in the extended uplink TBF mode to transmit, per a first periodicity of reachability for the wireless device, an extended coverage packet downlink assignment (EC-PDA) message for the wireless device on a downlink extended coverage packet associated control channel (EC-PACCH).

18. The RAN node of claim 17 , wherein the RAN node is further operable when the wireless device is in the idle mode to transmit, per a second periodicity of reachability for the wireless device, an extended coverage immediate assignment (EC-IA) message for the wireless device on an extended coverage access grant channel (EC-AGCH).

19. The RAN node of claim 18 , wherein the first periodicity of reachability is more frequent than the second periodicity of reachability.

20. A method in a radio access network (RAN) node configured to interact with a wireless device, the method comprising:
receiving, from the wireless device, uplink data blocks; and
transmitting, to the wireless device, an extended coverage packet uplink acknowledgment/non-acknowledgment (EC-PUAN) message,
wherein the EC-PUAN message includes an indication that the wireless device is to enter an extended uplink Temporary Block Flow (TBF) mode or an idle mode; and,
wherein the RAN node when the wireless device is in the extended uplink TBF mode performs a step of transmitting, per a first periodicity of reachability for the wireless device, an extended coverage packet downlink assignment (EC-PDA) message for the wireless device on a downlink extended coverage packet associated

Assignees

• Ericsson Telefon Ab L M

Inventors

• Diachina John Walter
• Schliwa-Bertling Paul
• Bergqvist Jens
• Hofström Björn

Classifications

• H04H60/90

  Wireless transmission systems · CPC title

• H04H60/88

  which are wireless networks · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W52/0235 Primary

  where the received signal is a power saving command · CPC title

• H04L1/1678

  where the control information is for timing, e.g. time stamps · CPC title