Network entry method in wireless mobile communication system

1. An initial network entry method by a Mobile Station (MS) in a wireless mobile communication system, the initial network entry method comprising:

transmitting a ranging request message including a Medium Access Control (MAC) address including a product group IDentifier (ID) indicating a specific product group to which the MS corresponds in a predetermined format to a Base Station (BS); and

receiving a ranging response message including information associated with basic capability negotiation and information associated with registration, corresponding to the product group ID, from the BS,

wherein the information associated with basic capability negotiation and the information associated with registration are determined by the BS storing product group IDs of MSs previously performing a network entry, and information associated with basic capability negotiation and information associated with registration corresponding to each of the MSs, and

wherein the MAC address includes 24 bits representing a manufacturer ID of the MS, 8 bits representing the product group ID, and 16 bits representing a serial number assigned to the MS by a manufacturer.

2. The initial network entry method of claim 1 , further comprising performing authorization with the BS after the reception of the ranging response message.

3. The initial network entry method of claim 1 , wherein the ranging response message includes a Hand-Over (HO) process optimization field in the form of a Type/Length/Value (TLV) field.

4. The initial network entry method of claim 3 , wherein an 8 th bit and a 9 th bit of the HO process optimization field are set to a value indicating that basic capability negotiation and registration can be omitted.

5. The initial network entry method of claim 1 , wherein the information associated with basic capability negotiation and the information associated with registration, which are received from the BS, include a Subscriber Station Basic Capability Negotiation Response (SBC-RSP) encodings field and a Registration Response (REG-RSP) encodings field.

6. An initial network entry method by a Base Station (BS) in a wireless mobile communication system, the initial network entry method comprising:

previously storing product group identifiers of a plurality of Mobile Stations (MSs), and information associated with basic capability negotiation and information associated with registration corresponding each of the MSs;

receiving a ranging request message including a Medium Access Control (MAC) address including a first product group IDentifier (ID) indicating a specific product group to which a first Mobile Station (MS) corresponds, in a predetermined format from the first MS;

determining whether the first product group ID is stored; and

if the first product group ID is stored, transmitting a ranging response message including information associated with basic capability negotiation and information associated with registration corresponding to the first product group ID to the first MS,

wherein the MAC address includes 24 bits representing a manufacturer ID of the first MS, 8 bits representing the first product group ID, and 16 bits representing a serial number assigned to the first MS by a manufacturer, and

wherein previously storing the group identifiers comprises storing a second product group ID of a second MS, and information associated with basic capability negotiation and information associated with registration corresponding to the second product group ID of the second MS, when the second MS performs a network entry.

7. The initial network entry method of claim 6 , further comprising performing authorization on the first MS after transmitting the ranging response message.

8. The initial network entry method of claim 6 , wherein the ranging response message includes a Hand-Over (HO) process optimization field in the form of a Type/Length/Value (TLV) field.

9. The initial network entry method of claim 8 , wherein an 8 th bit and a 9 th bit of the HO process optimization field are set to a value indicating that basic capability negotiation and registration can be omitted.

10. The initial network entry method of claim 6 , wherein the information associated with basic capability negotiation and the information associated with registration, which are transmitted to the first MS, include a Subscriber Station Basic Capability Negotiation Response (SBC-RSP) encodings field and a Registration Response (REG-RSP) encodings field.