System and method for state synchronization between a base station and a mobile station in a mobile communication system

• US 20070010267A1
• Filed: 07/06/2006
• Published: 01/11/2007
• Est. Priority Date: 07/06/2005
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Cho, Jae-Weon, Lee, Mi-Hyun, Lee, Sung-Jin, Son, Yeong-Moon, Hong, Song-Nam, Kang, Hyun-Jeong, Kim, Young-Ho, Son, Jung-Je, Lim, Hyoung-Kyu, Joo, Pan-Yuh, Chang, Hong-Sung
• Granted Patent: US 7,885,671 B2
• Time in Patent Office: Days
• US Class Current: 455/502
• CPC Class Codes: H04L 1/0028 Formatting
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 76/19 Connection re-establishment

Abstract

A system and method for state synchronization between a base station and a mobile station in a mobile communication system. A count value indicative of a state change of the base station is received. The received current count value is compared with a previous count value previously received and stored. If the current count value is different from the previous count value, the mobile station performs a network entry procedure with the base station.

Claims

1. A method for state synchronization with a base station in a mobile station of a mobile communication system, comprising:

receiving a current count value indicative of a state change of the base station;

comparing the received current count value with a previous count value previously received and stored; and

performing a network entry procedure with the base station if the current count value is different from the previous count value.

2. The method of claim 1, wherein the receiving step further comprises:

setting the current count value to be different from the previous count value when the base station restarts due to a critical error or an operator'"'"'s intention; and

transmitting the set count value to the mobile station.

3. A method for state synchronization with a mobile station in a base station of a mobile communication system, comprising:

restarting the base station;

setting a count value according to the restart and transmitting the set count value to the mobile station; and

performing a network entry procedure with the mobile station.

4. The method of claim 3, wherein the setting step further comprises setting the count value to be different from a previous count value when the base station restarts.

5. A system for state synchronization between a base station and a mobile station in a mobile communication system, comprising:

the base station for setting and transmitting a current count value indicative of a state change between the mobile station and the base station; and

the mobile station for receiving the set count value from the base station, wherein the received current count value is compared with a previous count value previously received and stored, and a network entry procedure is performed with the base station if the current count value is different from the previous count value.

6. The system of claim 5, wherein the base station sets the current count value different from the previous count value when the base station restarts.

7. A method for state synchronization between a base station and a mobile station in a mobile communication system, comprising:

setting a count value indicative of a state change of the base station and transmitting a Base Station Reset INDication (BS_RESET_IND) message comprising the set count value to the mobile station;

extracting, by the mobile station, the set count value comprised in the BS_RESET_IND message;

comparing the extracted set count value with a previous count value previously extracted and stored; and

performing a network entry procedure with the base station if the set count value is different from the previous count value.

8. The method of claim 7, wherein the setting step further comprises setting the count value to be different from the previous count value when the base station restarts.

9. The method of claim 7, wherein the state change indicates a state in which at least one of base station configuration/setup information, information about a connection with the mobile station, state information about current mode of the mobile station, and mobile station configuration/setup information is changed.

10. A method for state synchronization between a base station and a mobile station in a mobile communication system, comprising:

setting a count value indicative of a state change relative to the base station, and configuring and transmitting a Type/Length/Value (TLV) encoding field to the mobile station;

extracting, by the mobile station, the set count value comprised in the TLV encoding field;

comparing the extracted set count value with a previous count value previously extracted and stored; and

performing a network entry procedure with the base station if the set count value is different from the previous count value.

11. The method of claim 10, wherein the setting step further comprises setting the count value to be different from the previous count value when the base station restarts.

12. The method of claim 10, wherein the state change indicates a state in which at least one of base station configuration/setup information, information about a connection with the mobile station, state information about current mode of the mobile station, and mobile station configuration/setup information is changed.

13. The method of claim 10, wherein the setting step further comprises transmitting the TLV encoding field in a Downlink Channel Descript (DCD) message with a downlink burst profile.

14. A method for state synchronization between a base station and a mobile station in a mobile communication system, comprising:

setting a count value indicative of a state change relative to the base station, and configuring and transmitting a Downlink Frame Prefix (DLFP) comprising the set count value;

extracting, by the mobile station, the set count value comprised in the DLFP;

comparing the extracted set count value with a previous count value previously stored; and

performing a network entry procedure with the base station if the set count value is different from the previous count value.

15. The method of claim 14, wherein the setting step further comprises setting the count value to be different from the previous count value when the base station restarts.

16. The method of claim 14, wherein the state change indicates a state in which at least one of base station configuration/setup information, information about a connection with the mobile station, state information about current mode of the mobile station, and mobile station configuration/setup information is changed.

17. A method for state synchronization with a base station in a mobile station of a mobile communication system, comprising:

sending an initial ranging request to the base station;

receiving a response to the initial ranging request from the base station, the response comprising a first count value indicative of a number of state changes of the base station;

storing the first count value;

receiving a second count value indicative of a number of state changes from the base station; and

performing a network entry procedure with the base station if the second count value is different from the first count value.