Wireless network system and method of transmitting or receiving data over wireless network

• US 8,059,624 B2
• Filed: 11/27/2007
• Issued: 11/15/2011
• Est. Priority Date: 12/01/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kwon, Chang-yeul
• Primary Examiner(s): Yao; Kwang B
• Assistant Examiner(s): Cehic; Kenan
• Application Number:
  US11/945,826
• Publication Number:
  US 20080130566A1
• Time in Patent Office: 1,449 Days
• Field of Search: 370/442, 370/443, 370/445, 370/447, 370/448, 370310-350
• US Class Current: 370/340
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/52 based on load
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02

Abstract

A wireless network system and a method of transmitting or receiving data over a wireless network capable of limiting transmission or reception of request packets by stations existing on the wireless network, where directional communication is performed in a high-frequency bandwidth, while a wireless network coordinator is being changed or while the wireless network coordinator is in a busy state. The wireless network station includes an identification unit which determines a state of network with reference to a beacon frame of a received superframe; a generation unit which generates a packet which includes an accepting command based on a result of the determination by the identification unit; and a communication unit which transmits the packet which includes the accepting command through a communication channel, wherein the identification unit determines whether the accepting command can be transmitted with reference to the beacon frame which indicates whether the accepting command which is transmitted by a wireless network station on or participating in the network can be transmitted.

Claims

1. A wireless network station comprising:

an identification unit which determines a state of network with reference to a beacon frame which is received during a superframe;

a generation unit which generates a packet which comprises a requesting command based on a result of the determination by the identification unit; and

a communication unit which transmits the packet which comprises the requesting command through a communication channel,

wherein the identification unit determines whether the requesting command can be transmitted based on a first information indicating whether a wireless network coordinator can accept the requesting command,

a second information indicating whether there is a channel time available to allow new bandwidth reservation request, and

a third information coded by one bit and indicating whether there is a change in a channel time scheduling of the superframe relative to another superframe transmitted prior to the superframe, wherein the beacon frame comprises the first information, the second information and the third information, and

wherein the first information does not depend on the second information.

2. The station of claim 1, wherein the requesting command comprises at least one of:

a command for requesting bandwidth allocation of a channel time block in the superframe; and

a command for requesting an approval for participation in the network.

3. The station of claim 2, wherein the identification unit determines whether the requesting command can be transmitted with reference to a beacon state field of the beacon frame which comprises a flag which indicates the state of the wireless network coordinator.

4. The station of claim 3, wherein the beacon state field comprises an accepting commands field which indicates whether a packet which comprises a command requesting bandwidth allocation of a channel time block in the superframe can be accepted by the wireless network coordinator.

9. The station of claim 1, wherein the beacon frame indicates that the wireless network coordinator cannot accept the requesting command when the wireless network coordinator is in a busy state or is handing over a network authority, and

wherein the wireless network coordinator is in the busy state when the wireless coordinator does not possess the resources required to respond to the packet which comprises the requesting command.

5. A method of transmitting or receiving data, the method comprising:

determining a state of network with reference to a beacon frame which is received during

a superframe;

generating a packet which comprises a requesting command based on a result of the determining; and

transmitting the packet which comprises the requesting command through a predetermined communication channel,

wherein the determining the state of the network comprises identifying whether the requesting command can be transmitted based on a first information indicating whether a wireless network coordinator can accept the requesting command,

a second information indicating whether there is channel time available to allow new bandwidth reservation request, and

a third information coded by one bit and indicating whether there is a change in a channel

time scheduling of the superframe relative to another superframe transmitted prior to the superframe, wherein the beacon frame comprises the first information, the second information and the third information, and

wherein the first information does not depend on the second information.

6. The method of claim 5, wherein the requesting command comprises at least one of:

a command for requesting bandwidth allocation of a channel time block in the superframe; and

a command for requesting an approval for participation in the network.

7. The method of claim 6, wherein the determining the state of the network comprises determining whether the requesting command can be transmitted with reference to a beacon state field of the beacon frame which comprises a flag which indicates the state of a wireless network coordinator.

8. The method of claim 7, wherein the beacon state field comprises an accepting commands field which indicates whether a packet which comprises a command requesting bandwidth allocation of a channel time block in the superframe can be accepted by the wireless network coordinator.

10. The method of claim 5, wherein the beacon frame indicates that the wireless network coordinator cannot accept the requesting command when the wireless network coordinator is in a busy state or is handing over a network authority, and

wherein the wireless network coordinator is in the busy state when the wireless coordinator does not possess the resources required to respond to the packet which comprises the requesting command.