Base station apparatus and terminal apparatus

• US 6,947,768 B2
• Filed: 09/13/2002
• Issued: 09/20/2005
• Est. Priority Date: 09/28/2001
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Toshimitsu, Kiyoshi, Adachi, Tomoko
• Primary Examiner(s): Corsaro, Nick
• Assistant Examiner(s): Aminzay, Shaima Q
• Application Number:
  US10/242,632
• Publication Number:
  US 20030064752A1
• Time in Patent Office: 1,103 Days
• Field of Search: 455/561, 455/560, 455/26.1, 455/447, 455/448, 455/449, 455/414.1, 455/453, 370/349
• US Class Current: 455/560
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04W 12/069 using certificates or pre-shared keys
• CPC Class Codes: H04W 76/20 Manipulation of established connections
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 92/02 Inter-networking arrangements
• CPC Class Codes: H04W 92/20 between access points

Abstract

A base station apparatus corresponding to a first base station apparatus of base station apparatuses and connected to terminal apparatuses, first base station apparatus transmitting and receiving first packets with respect to a second base station apparatus corresponding to another of base station apparatuses and transmitting and receiving second packets with respect to terminal apparatuses, first base station apparatus transmits a third packet to second base station apparatus, third packet corresponding to one of first packets to be transmitted from first base station apparatus and including a first data item, second base station apparatus recognizing by first data item that first base station apparatus is one of base station apparatuses, third packet being used through an authentication process or an association process for connecting in wireless first base station apparatus to second base station apparatus.

Claims

1. A base station apparatus corresponding to a first base station apparatus of a plurality of base station apparatuses and connected to a plurality of terminal apparatuses, the first base station apparatus transmitting and receiving a plurality of first packets with respect to a second base station apparatus corresponding to another of the base station apparatuses and transmitting and receiving a plurality of second packets with respect to the terminal apparatuses, the first base station apparatus comprising:

a transmitter unit configured to transmit a third packet to the second base station apparatus, the third packet corresponding to one of the first packets to be transmitted from the first base station apparatus and including a first data item, the second base station apparatus recognizing by the first data item that the first base station apparatus is one of the base station apparatuses, the third packet being used through an authentication process or an association process for connecting in wireless the first base station apparatus to the second base station apparatus.

3. An apparatus according to claim 1, further comprising:

a first receiver unit configured to receive a fourth packet which is not transmitted to the first base station apparatus; and

,

a transmission control unit configured to control an operation for transmitting the first packets and the second packets from the first base station apparatus, when the fourth packet satisfies a predetermined condition, and configured not to control the operation when the fourth packet does not satisfy the condition, the condition being that the fourth packet is transmitted from one of the terminal apparatuses and is addressed to another of the terminal apparatuses without being relayed by the first base station apparatus.

5. An apparatus according to claim 1, further comprising:

a first radiant pattern forming unit configured to form a directional pattern having directivity toward the second base station apparatus, for transmitting the third packet.

6. An apparatus according to claim 5, further comprising:

a second radiant pattern forming unit configured to form an omni-directional pattern, for transmitting and receiving the second packets with respect to the terminal apparatuses.

7. An apparatus according to claim 1, further comprising:

a second receiver unit configured to receive the first packets transmitted from the second base station apparatus, to obtain received packets;

a measuring unit configured to measure a received power of each of the received packets, to obtain measured powers;

a detection unit configured to detect a type of each of the received packets, to obtain detected types;

a determination unit configured to determine whether the second base station apparatus forms a directional pattern having directivity toward the first base station apparatus or not when the second base station apparatus transmits at least one of the first packets which is addressed to the first base station apparatus, based on the measured powers and the detected types, to obtain a determination result;

a control unit configured to control at least a transmitting power of transmitting the first packets to the second base station, based on the determination result.

8. An apparatus according to claim 1, further comprising:

a second receiver unit configured to receive the first packets transmitted from the second base station apparatus, to obtain received packets;

a measuring unit configured to measure a received power of each of the received packets, to obtain measured powers;

a first detection unit configured to detect a type of each of the received packets, to obtain detected types;

a second detection unit configured to detect a transmitting power used by the second base station apparatus for transmitting each of the received packets, to obtain a detected powers;

a determination unit configured to determine whether the second base station apparatus forms a directional pattern having directivity toward the first base station apparatus or not when the second base station apparatus transmits at least one of the first packets which is addressed to the first base station apparatus, based on the measured powers, the detected types, and the detected powers, to obtain a determination result;

a control unit configured to control at least a transmitting power of transmitting the first packets to the second base station, based on the determination result.

9. An apparatus according to claim 1, further comprising:

a second receiver unit configured to receive a fifth packet which is first another of the first packets transmitted from the second base station apparatus and is broadcasted from the second base station apparatus;

a first measuring unit configured to measure a received power of the fifth packet when it is received by the second receiver unit, to obtain a first measured power;

a third receiver unit configured to receive a sixth packet which is second another of the first packets transmitted from the second base station apparatus and is unicasted to the first base station;

a second measuring unit configured to measure a received power of the sixth packet when it is received by the third receiver unit, to obtain a second measured power;

a determination unit configured to determine whether the second base station apparatus forms a directional pattern having directivity toward the first base station apparatus or not when the second base station apparatus transmits the sixth packet to the first base station apparatus, based on the first and the second measured power, to obtain a determination result;

a control unit configured to control at least a transmitting power of transmitting the first packets to the second base station, based on the determination result.

10. An apparatus according to claim 1, further comprising:

a second receiver unit configured to receive a fifth packet which is first another of the first packets transmitted from the second base station apparatus and is broadcasted from the second base station apparatus;

a first measuring unit configured to measure a received power of the fifth packet when it is received by the second receiver unit, to obtain a first measured power;

a first detection unit configured to detect a transmitting power used by the second base station apparatus for transmitting the fifth packet, to obtain a first detected power;

a third receiver unit configured to receive a sixth packet which is second another of the first packets transmitted from the second base station apparatus and is unicasted to the first base station;

a second measuring unit configured to measure a received power of the sixth packet when it is received by the third receiver unit, to obtain a second measured power;

a second detection unit configured to detect a transmitting power used by the second base station apparatus for transmitting the sixth packet, to obtain a second detected power;

a determination unit configured to determine whether the second base station apparatus forms a directional pattern having directivity toward the first base station apparatus or not when the second base station apparatus transmits the sixth packet to the first base station apparatus, based on the first and the second measured powers and the first and the second detected powers, to obtain a determination result;

a control unit configured to control at least a transmitting power of transmitting the first packets to the second base station, based on the determination result.

11. An apparatus according to claim 7, wherein the control unit controls at least one of the transmitting power of transmitting the first packets to the second base station and a level of carrier sense of the first base station apparatus.

12. An apparatus according to claim 8, wherein the control unit controls at least one of the transmitting power of transmitting the first packets to the second base station and a level of carrier sense of the first base station apparatus.

13. An apparatus according to claim 9, wherein the control unit controls at least one of the transmitting power for transmitting the first packets to the second base station and a level of carrier sense of the first base station apparatus.

14. An apparatus according to claim 10, wherein the control unit controls at least one of the transmitting power of transmitting the first packets to the second base station and a level of carrier sense of the first base station apparatus.

15. An apparatus according to claim 11, wherein the control unit controls the transmitting power so as to suppress the transmitting power and/or controls the level of carrier sense so as to suppress a sensibility of the carrier sense, when the determination unit determines that the second base station apparatus forms the directional pattern having directivity toward the first base station apparatus.

16. An apparatus according to claim 12, wherein the control unit controls the transmitting power so as to suppress the transmitting power and/or controls the level of carrier sense so as to suppress a sensibility of the carrier sense, when the determination unit determines that the second base station apparatus forms the directional pattern having directivity toward the first base station apparatus.

17. An apparatus according to claim 13, wherein the control unit controls the transmitting power so as to suppress the transmitting power and/or controls the level of carrier sense so as to suppress a sensibility of the carrier sense, when the determination unit determines that the second base station apparatus forms the directional pattern having directivity toward the first base station apparatus.

18. An apparatus according to claim 14, wherein the control unit controls the transmitting power so as to suppress the transmitting power and/or controls the level of carrier sense so as to suppress a sensibility of the carrier sense, when the determination unit determines that the second base station apparatus forms the directional pattern having directivity toward the first base station apparatus.

19. An apparatus according to claim 3, wherein the transmission control unit controls the operation so as not to transmit the first and the second packets from the first base station apparatus for predetermined time.

2. A base station apparatus corresponding to a first base station apparatus of a plurality of base station apparatuses and connected to a plurality of terminal apparatuses, the first base station apparatus transmitting and receiving a plurality of packets with respect to a second base station apparatus corresponding to another of the base station apparatuses, the second base station apparatus broadcasting synchronization signals, the first base station apparatus comprising:

a synchronization unit configured to synchronize a transmission timing of the first base station apparatus for transmitting the packets with that of a second base station apparatus, based on the synchronization signals broadcasted by the second base station apparatus; and

a transmitter unit configured to transmit a first packet to the second base station apparatus in the transmission timing of the first base station apparatus synchronized with that of the second base station apparatus, the first packet corresponding to one of the packets to be transmitted from the first base station and including a first data item, the second base station apparatus recognizing by the first data item that the first base station apparatus is one of the base station apparatuses, the first packet being used through an authentication process or an association process for connecting in wireless the first base station apparatus to the second base station apparatus.

4. A terminal apparatus corresponding to a first terminal apparatus of a plurality of terminal apparatuses and connected to a base station apparatus, the first terminal apparatus transmitting and receiving a plurality of first packets with respect to the base station apparatus and the terminal apparatuses other than the first terminal apparatus, a first terminal apparatus comprising:

a receiver unit configured to receive a second packet which is not addressed to the first terminal apparatus; and

,

a transmission control unit configured to control an operation for transmitting the first packets from the first terminal apparatus, when the second packet satisfies a predetermined condition, and configured not to control the operation when the second packet does not satisfy the condition, the condition being that the second packet is transmitted and is to be received among the base station apparatus and the terminal apparatuses other than the first terminal apparatus.

20. An apparatus according to claim 4, wherein the transmission control unit controls the operation so as not to transmit the packets from the first terminal apparatus for predetermined time.