Local area network having multiple channel wireless access
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04Q-007/00
출원번호
US-0357429
(1999-07-20)
우선권정보
WO-PCT/US96/09474 (1996-06-03)
발명자
/ 주소
Mahany, Ronald L.
출원인 / 주소
Broadcom Corporation
대리인 / 주소
McAndrews, Held & Malloy, Ltd.
인용정보
피인용 횟수 :
154인용 특허 :
140
초록▼
A communication network having at least one access point supports wireless communication among a plurality of wireless roaming devices via a first and a second wireless channel. The access point comprises a first and a second transceiver. The first and second transceivers operate on the first and se
A communication network having at least one access point supports wireless communication among a plurality of wireless roaming devices via a first and a second wireless channel. The access point comprises a first and a second transceiver. The first and second transceivers operate on the first and second wireless channels, respectively. Each of the plurality of wireless roaming devices are capable of communicating on the first and second wireless channel. In one embodiment, the first wireless channel is used to exchange data, while the second channel is used to manage such exchanges as well as access to the first channel. In an alternate embodiment, both channels are used to support communication flow, however the first channel supports a protocol that is more deterministic than that of the second channel. Allocation of ones of the plurality of wireless roaming devices from one channel to the next may occur per direction from the access point. It may also result from decisions made by each of the wireless roaming devices made independent of the access point. For example, a decision may be made based on the data type being transferred or based on the current channel load. Such factors may also be used by the access point for allocation determinations. In addition, allocation may be based on the type of roaming device involved, such as allocating peripherals to a slower channel.
대표청구항▼
A communication network having at least one access point supports wireless communication among a plurality of wireless roaming devices via a first and a second wireless channel. The access point comprises a first and a second transceiver. The first and second transceivers operate on the first and se
A communication network having at least one access point supports wireless communication among a plurality of wireless roaming devices via a first and a second wireless channel. The access point comprises a first and a second transceiver. The first and second transceivers operate on the first and second wireless channels, respectively. Each of the plurality of wireless roaming devices are capable of communicating on the first and second wireless channel. In one embodiment, the first wireless channel is used to exchange data, while the second channel is used to manage such exchanges as well as access to the first channel. In an alternate embodiment, both channels are used to support communication flow, however the first channel supports a protocol that is more deterministic than that of the second channel. Allocation of ones of the plurality of wireless roaming devices from one channel to the next may occur per direction from the access point. It may also result from decisions made by each of the wireless roaming devices made independent of the access point. For example, a decision may be made based on the data type being transferred or based on the current channel load. Such factors may also be used by the access point for allocation determinations. In addition, allocation may be based on the type of roaming device involved, such as allocating peripherals to a slower channel. r receiving a public security parameter and an authentication signature from the mobile station, wherein the authentication signature is generated using both the public security parameter and a private security parameter; means for comparing the public security parameter communicated by the mobile station to at least one public security parameter previously received from the mobile station; and means for performing an additional verification of the identify of the mobile station if the public security parameter communicated by the mobile station matches a previously received public security parameter of the mobile station. 7. A method of authenticating a subscriber in a communication network, the method comprising the steps of: performing a public challenge procedure; receiving a broadcast security parameter and an authentication signature from a subscriber who responds to the public challenge procedure; determining whether the broadcast security parameter transmitted by the subscriber matches a previously transmitted parameter from the subscriber, wherein the previously transmitted parameter is received from a previous public challenge procedure; and if the broadcast security parameter is different than the previously transmitted parameter, then generating an authentication signature using the broadcast security parameter transmitted by the subscriber as an input to a signature generation algorithm and checking whether the generated authentication signature matches the authentication signature received from the subscriber; if the broadcast security parameter matches a broadcast security parameter previously transmitted by the subscriber, then performing a private challenge procedure. ol data from the plurality of egress edge units that the core controller uses to control overflow of a plurality of egress edge unit buffers and to synchronize data flow in the router. 6. The router of claim 5, wherein the core controller monitors a plurality of synchronization data at the plurality of ingress edge units via the ingress control data links and at the plurality of egress edge units via the egress control data link to synchronize data flow through the router; and wherein the core controller monitors a plurality of time information at each of the plurality of egress edge units via the egress control data links to verify data intended for each egress edge unit arrives at an appropriate time. 7. The router of claim 1, wherein the optical switch fabric comprises an optical cross-bar switch, comprising: a plurality of inputs, each input connected to one of the plurality of ingress edge units; a plurality of outputs, each output connected to one of the plurality of egress edge units; and a plurality of switching elements configured to create a plurality of unique paths through the optical cross bar switch from each input to each output. 8. The router of claim 7, wherein the switching elements are N to 1 switching elements, where N is equal to the number of the plurality of ingress edge units, for switching a super packet received on any of the N inputs to one the plurality of outputs. 9. The router of claim 8, wherein each of the N to 1 switching elements comprises an N to 1 semiconductor optical amplifier operable to switch from N inputs to one output. 10. The router of claim 7, wherein each switching element has sufficiently broad bandwidth to accommodate all wavelengths within an optical fiber upon which the plurality of super packets are transported. 11. The router of claim 7, wherein the core controller, for each super packet arriving at the opt
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이 특허에 인용된 특허 (140)
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