Method for management of wireless channel to wireless IP terminals in wireless LAN based access point

• US 20040137907A1
• Filed: 12/29/2003
• Published: 07/15/2004
• Est. Priority Date: 01/03/2003
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Jung-Sik
• Application Number:
  US10/746,337
• Publication Number:
  US 20040137907A1
• Time in Patent Office: Days
• US Class Current: 455/450
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A method for management of a wireless channel to wireless IP terminals in a wireless LAN based AP (Access Point) includes: segmenting a wireless channel that is serviceable to each of wireless IP terminals registered to the LAN into a plurality of time slots; assigning a wireless channel for a predetermined time by sequentially allocating a time slot to one of the registered wireless IP terminals, which has a wireless channel occupancy permission, and; establishing a wireless channel between the AP and each of the wireless IP terminals having an assigned wireless channel per time slot, according to the sequentially allocated time slot, and transmitting a packet data in a fixed size to, and receiving a packet data from, the AP via the wireless channel. The method can be advantageously used for improving speech quality of a wireless IP phone by reducing a delay problem associated with channel assignment to wireless IP terminals and a jitter problem caused by changing data size.

Claims

1. A method for management of a wireless channel to wireless Internet protocol terminals in a wireless local area network based access point, the method comprising the steps of:

segmenting a wireless channel that is serviceable to each of wireless Internet protocol terminals registered to the local area network into a plurality of time slots;

assigning a wireless channel for a predetermined time by sequentially allocating a time slot to one of the registered wireless Internet protocol terminals, which has a wireless channel occupancy permission; and

establishing a wireless channel with each of the wireless Internet protocol terminals having an assigned wireless channel per time slot, according to the sequentially allocated time slot, and transmitting and receiving a packet data in a fixed size via the wireless channel.

2. The method according to claim 1, wherein the assigning of the wireless channel step is accomplished by sequentially allocating a time slot to each wireless Internet protocol terminal with a wireless channel occupancy permission, and then designating a following time slot as a time slot for channel assignment information change within one cycle.

3. The method according to claim 2, wherein the channel assignment information change involves updating channel assignment information by reassigning channels based on a current wireless channel assignment information as a wireless Internet protocol terminal without an assigned time slot sends a new wireless channel occupancy request, and transmitting the updated channel assignment information to each of the wireless Internet protocol terminals.

4. The method according to claim 1, wherein the packet frame in the fixed size is comprised of a header section for displaying the kinds of data, a voice data section for providing voice service, and information data section for providing data service, and a frame check sequence section.

5. The method according to claim 4, wherein occupancy percentages of the voice data section and the information data section in the packet frame having the fixed size are variable.

6. The method according to claim 1, wherein half of the time slot is assigned for a transmission mode and the other half is assigned for a receiving mode.

7. The method according to claim 1, wherein the number of the time slots is determined, depending on the number of wireless Internet protocol terminals being registered, as long as speech quality of the wireless Internet protocol terminals is secured.

8. The method according to claim 1, wherein the wireless Internet protocol terminal is one of a wireless Internet protocol phone, a wireless Internet protocol handset, and a personal computer.

9. The method according to claim 1, wherein the size of the packet frame is determined in consideration with characteristics of wireless Internet protocol terminals using the wireless channel.

10. The method according to claim 1, further comprising of:

deciding whether the current time slot is a registration time slot by reading a current time slot count value;

establishing a wireless channel with a wireless terminal corresponding to the time slot count value when the current time slot is not the registration time slot;

deciding whether a channel assignment information change request is received when the current time slot is the registration time slot; and

updating channel assignment information when there is a request for channel assignment information change.

11. A method for managing wireless channels, comprising:

segmenting a wireless channel, that is serviceable to each of a plurality of wireless terminals registered to a network, into a plurality of time slots;

assigning a wireless channel for a predetermined time by sequentially allocating a time slot to one of the registered wireless Internet protocol terminals, which has a wireless channel occupancy permission; and

establishing a wireless channel between an access point and each of the wireless terminals having an assigned wireless channel per time slot, according to the sequentially allocated time slot, and transmitting and receiving a packet data in a fixed size via the wireless channel.

12. The method according to claim 11, with the assigning of the wireless channel by sequentially allocating a time slot to each wireless terminal with a wireless channel occupancy permission, and then designating a following time slot as a time slot for channel assignment information change within one cycle.

13. The method according to claim 12, with the channel assignment information change involving updating channel assignment information by reassigning channels based on a current wireless channel assignment information as a wireless terminal without an assigned time slot, sending a new wireless channel occupancy request, and transmitting the updated channel assignment information to each of the wireless terminals.

14. The method according to claim 13, with the packet frame in the fixed size comprising of a header section for displaying the kinds of data, a voice data section for providing voice service, and information data section for providing data service, and a frame check sequence section.

15. The method according to claim 14, with occupancy percentages of the voice data section and the information data section in the packet frame having the fixed size are variable.

16. The method according to claim 15, with half of the time slot being assigned for a transmission mode and the other half is assigned for a receiving mode.

17. The method according to claim 16, with the number of the time slots being variable, depending on the number of wireless terminals being registered, as long as speech quality of the wireless terminals is secured.

18. The method according to claim 11, further comprising of:

deciding whether the current time slot is a registration time slot by reading a current time slot count value;

establishing a wireless channel with a wireless terminal corresponding to the time slot count value when the current time slot is not the registration time slot;

deciding whether a channel assignment information change request is received when the current time slot is the registration time slot; and

updating channel assignment information when there is a request for channel assignment information change.

19. An apparatus for managing wireless channels, comprising:

a plurality of wireless Internet protocol terminals; and

an access point sending and receiving information between the plurality of wireless Internet protocol terminals, the access point using a wireless local area network, the access point segmenting a wireless channel that is serviceable to each of wireless Internet protocol terminals registered to the local area network into a plurality of time slots, the access point assigning a wireless channel for a predetermined time by sequentially allocating a time slot to one of the registered wireless Internet protocol terminals, which has a wireless channel occupancy permission, and the access point establishing a wireless channel between the access point and each of the wireless Internet protocol terminals having an assigned wireless channel per time slot, according to the sequentially allocated time slot, and transmitting a packet data in a fixed size to, and receiving a packet data from the access point via the wireless channel.

20. The apparatus according to claim 19, with the packet frame in the fixed size comprising of a header section for displaying the kinds of data, a voice data section for providing voice service, and information data section for providing data service, and a frame check sequence section.

21. The apparatus according to claim 20, with occupancy percentages of the voice data section and the information data section in the packet frame including the fixed size being variable.

22. The apparatus according to claim 21, with one of the wireless Internet protocol terminals being one of a wireless Internet protocol phone, a wireless Internet protocol handset, and a personal computer.