Data transmission in a TDMA system

• US 20020131396A1
• Filed: 01/23/2002
• Published: 09/19/2002
• Est. Priority Date: 06/30/1998
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Nokia Corporation
• Inventors: Hamalainen, Jari, Aho, Ari, Lipponen, Markku, Knuutila, Jarno, Salminen, Ari
• Granted Patent: US 6,819,937 B2
• Time in Patent Office: Days
• US Class Current: 370/349
• CPC Class Codes: H03G 3/3047 for intermittent signals, e.g. burst signals
• CPC Class Codes: H04B 1/036 Cooling arrangements
• CPC Class Codes: H04B 7/2643 using time-division multiple access [TDMA] H04B7/2615, H04B7/2618 take precedence
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range

Abstract

A method and apparatus for updating transmission power class information of a Mobile Station (MS) in a General Packet Radio Services (GPRS) network. The invention updates transmission power class information of the MS in the GPRS network by initiating a Routing Area Update (RAU) procedure in the MS. The RAU procedure includes sending from the MS to a Serving GPRS Support Node (SGSN) of the GPRS network a RAU request message including a MS Radio Access Capability (RAC) Information Element (IE) which includes an IE indicating a new transmission power class of the MS, accepting in the SGSN the IE indicating a new transmission power class of the MS included in the MS RAC of the RAU request message, and delivering to a Base Station (BSS) the IE indicating a new transmission power class of the MS, thereby updating the transmission power class information of the MS at the BSS.

Claims

1. A method of updating transmission power class information of a Mobile Station (MS) in a packet switched network comprising:

updating transmission power class information of the MS in the network by initiating a Routing Area Update (RAU) procedure in the MS,

wherein said RAU procedure comprises;

sending from said MS to a Serving Support Node (SSN) of the network a RAU request message including a MS Radio Access Capability (RAC) Information Element (E) which includes a field indicating a new transmission power class of the MS,

accepting in said SSN said IE indicating a new transmission power class of the MS included in said MS RAC of the RAU request message, and

delivering to a Base Station (BSS) the IE indicating a new transmission power class of the MS, thereby updating the transmission power class information of the MS at the BSS.

2. A method according to claim 1, wherein said updating step is performed upon occurrence of a predetermined state.

3. A method according to claim 2, wherein said predetermined state occurs when said MS moves to a new Routing Area (RA).

4. A method according to claim 2, wherein said predetermined state occurs periodically when a timer in the MS reaches a pre-set value.

5. A method according to claim 1, wherein said RAU request includes one of first information indicating whether said RAU procedure is a normal RAU procedure, second information indicating whether said RAU procedure is a periodic RAU procedure, or third information indicating whether said RAU procedure is a combined RA/Location Area (LA) procedure.

6. A method according to claim 1, said RAU request includes information of a New Update Type field indicating that said RAU procedure is used for updating the network with new power class information.

7. A method according to claim 1, wherein said SGSN provides new power class information to said BSS.

8. A method according to claim 1, wherein said SSN can use either a DL Data PDU or RA_Capability_PDU messages to deliver the new power class of the MS to the BSS.

9. A method according to claim 1, wherein the network is a General Packet Radio Services (GPRS) network and said SSN is a Serving GPRS Support Node (SGSN).

10. A packet switched network having a function of updating transmission power class information, comprising:

at least one Mobile Station (MS);

a Serving Support Node (SGSN); and

a Base Station (BSS),

wherein transmission power class information of the MS in the GPRS network is updated by initiating a Routing Area Update (RAU) procedure in the MS,

wherein said RAU procedure comprises;

sending from said MS to said SSN of the network a RAU request message including a MS Radio Access Capability (RAC) Information Element (IE), which includes a field indicating a new transmission power class of the MS,

accepting in said SSN said IE indicating a new transmission power class of the MS included in said MS RAC of the RAU request message, and

delivering to said BSS the IE indicating a new transmission power class of the MS, thereby updating the transmission power class information of the MS at the BSS.

11. A packet switched network according to claim 10, wherein said updating is performed upon occurrence of a predetermined state.

12. A packet switched network according to claim 10, wherein said predetermined state occurs when said MS moves to a new Routing Area (RA).

13. A packet switched network according to claim 11, wherein said predetermined state occurs periodically when a timer in the MS reaches a pre-set value.

14. A packet switched network according to claim 10, wherein said RAU request includes one of first information indicating whether said RAU procedure is a normal RAU procedure, second information indicating whether said RAU procedure is a periodic RAU procedure, or third information indicating whether said RAU procedure is a combined RA/Location Area (LA) procedure.

15. A packet switched network according to claim 10, said RAU request includes information of a New Update Type field indicating that said RAU procedure is used for updating the network with new power class information.

16. A packet switched network according to claim 10, wherein said SSN provides new power class information to said BSS.

17. A packet switched network according to claim 10, wherein said SSN can use either a DL Data PDU or RA_Capability_PDU messages to deliver the new power class of the MS to the BSS.

18. A packet switched network according to claim 10, wherein the network is a General Packet Radio Services (GPRS) network and said SSN is a Serving GPRS Support Node (SGSN).

20. A Mobile Station according to claim 19, wherein said updating is performed upon occurrence of a predetermined state.

21. A Mobile Station according to claim 20, wherein said predetermined state occurs when said MS moves to a new Routing Area (RA).

22. A Mobile Station according to claim 20, wherein said predetermined state occurs periodically when a timer in the MS reaches a pre-set value.

23. A Mobile Station according to claim 19, wherein said RAU request includes one of first information indicating whether said RAU procedure is a normal RAU procedure, second information indicating whether said RAU procedure is a periodic RAU procedure, or third information indicating whether said RAU procedure is a combined RA/Location Area (LA) procedure.

24. A Mobile Station according to claim 19, said RAU request includes information of a New Update Type field indicating that said RAU procedure is used for updating the network with new power class information.

25. A Mobile Station according to claim 19, wherein said SSN provides new power class information to said BSS.

26. A Mobile Station according to claim 19, wherein said SSN can use either a DL Data PDU or RA_Capability_PDU messages to deliver the new power class of the MS to the BSS.

27. A Mobile Station according to claim 19, wherein the network is a General Packet Radio Services (GPRS) network and said SSN is a Serving GPRS Support Node (SGSN).

19. A Mobile Station for use in a packet switched network having a function of updating transmission power class information, said network includes a Serving Support Node (SSN), and a Base Station (BSS), said MS comprising:

a Radio Frequency (RF) unit which transmits and receives wireless signals; and

a control unit which updates transmission power class information of the MS in the GPRS network by initiating a Routing Area Update (RAU) procedure in the MS,

wherein said RAU procedure comprises;

sending from said MS to said SSN of the network a RAU request message including a MS Radio Access Capability (RAC) Information Element (IE), which includes a field indicating a new transmission power class of the MS,

accepting in said SSN said IE indicating a new transmission power class of the MS included in said MS RAC of the RAU request message, and

delivering to said BSS the IE indicating a new transmission power class of the MS, thereby updating the transmission power class information of the MS at the BSS.