Controlling method of wireless communication device and network

1 . A controlling method of a wireless communication device, comprising:

transmitting a Mobility Registration Update (MRU) request to a network;

keeping a Protocol Data Unit (PDU) command received from the network; and

processing the PDU command immediately when an MRU accept is received from the network.

2 . The controlling method of the wireless communication device according to claim 1 , wherein the PDU command is kept until receiving another PDU command.

3 . The controlling method of the wireless communication device according to claim 1 , wherein the PDU command is kept, if the MRU accept is not received.

4 . The controlling method of the wireless communication device according to claim 1 , wherein the PDU command is received after transmitting the MRU request.

5 . The controlling method of the wireless communication device according to claim 1 , wherein the PDU command, which the wireless communication device is kept, is received before receiving the MRU accept.

6 . The controlling method of the wireless communication device according to claim 1 , further comprising:

aborting the PDU command, which is kept, after a first expiry timer countered from transmitting the MRU request is expired or a second expiry timer countered from receiving the PDU command is expired.

7 . The controlling method of the wireless communication device according to claim 6 , wherein the second expiry timer is less than the first expiry timer.

8 . The controlling method of the wireless communication device according to claim 6 , wherein the second expiry timer is less than half of the first expiry timer.

9 . The controlling method of the wireless communication device according to claim 6 , wherein the first expiry timer is 15 seconds.

10 . The controlling method of the wireless communication device according to claim 6 , wherein the second expiry timer is less than 15 seconds.

11 . A controlling method of a wireless communication device, comprising:

transmitting a Mobility Registration Update (MRU) request to a network;

keeping a Protocol Data Unit (PDU) command received from the network; and

processing the PDU command after a predetermined waiting timer counted from receiving an MRU accept from the network is expired.

12 . The controlling method of the wireless communication device according to claim 11 , wherein the PDU command is kept until receiving another PDU command.

13 . The controlling method of the wireless communication device according to claim 11 , wherein the PDU command is kept, if the MRU accept is not received.

14 . The controlling method of the wireless communication device according to claim 11 , wherein the PDU command is received after transmitting the MRU request.

15 . The controlling method of the wireless communication device according to claim 11 , wherein the PDU command, which the wireless communication device is kept, is received before receiving the MRU accept.

16 . The controlling method of the wireless communication device according to claim 11 , further comprising:

aborting the PDU command, which is kept, after a first expiry timer countered from transmitting the MRU request is expired or a second expiry timer countered from receiving the PDU command is expired.

17 . The controlling method of the wireless communication device according to claim 16 , wherein the second expiry timer is less than the first expiry timer.

18 . The controlling method of the wireless communication device according to claim 16 , wherein the second expiry timer is less than half of the first expiry timer.

19 . The controlling method of the wireless communication device according to claim 16 , wherein the first expiry timer is 15 seconds.

20 . A controlling method of a network, comprising:

receiving a Mobility Registration Update (MRU) request from a wireless communication device; and

transmitting a Protocol Data Unit (PDU) command to the wireless communication device when an MRU accept is transmitted.