IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0465807
(1995-06-06)
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발명자
/ 주소 |
- Averbuch Rod (874 Shambliss La. Buffalo Grove IL 60089) Cimet Israel A. (891 Silver Rock La. Buffalo Grove IL 60089) Lev Valy (1548 Rachel La. Buffalo Grove IL 60089)
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| 인용정보 |
피인용 횟수 :
73 인용 특허 :
0 |
초록
▼
A packet data communication system (100) that includes a packet data routing network (101, 103) and a plurality of base sites (105-107) employs a method (400, 500) and apparatus for providing packet data to a communication unit (109). The packet data routing network (101, 103) provides a packet (201
A packet data communication system (100) that includes a packet data routing network (101, 103) and a plurality of base sites (105-107) employs a method (400, 500) and apparatus for providing packet data to a communication unit (109). The packet data routing network (101, 103) provides a packet (201-208) of data to at least two of the base sites (105-107), one of the base sites (e.g., 105) being the site currently serving the communication unit (109) and the other base site or sites (e.g., 106, 107) being possible handoff targets. The serving base site (105) transmits at least a first portion (e.g., 201-203) of the packet (201-208) to the communication unit (109) and the communication unit (109) receives the transmitted packet or portion thereof. However, if during transmission of the packet (201-208) the communication unit (109) requires a handoff to one (e.g., 106) of the target base sites (106, 107), the communication unit (109) transmits an acknowledgment message (124) to the target base site (106) indicating receipt of the first portion (201-203) of the packet. Upon receipt of the acknowledgment message (124), the target base site (106) transmits at least a second portion (e.g., 204-208) of the packet to the communication unit (109).
대표청구항
▼
In a communication system including a plurality of base sites, a packet data routing network, and a communication unit, a method for providing packet data to the communication unit, the method comprising the steps of: a) providing, by the packet data routing network, a packet of data to at least two
In a communication system including a plurality of base sites, a packet data routing network, and a communication unit, a method for providing packet data to the communication unit, the method comprising the steps of: a) providing, by the packet data routing network, a packet of data to at least two base sites of the plurality of base sites; b) transmitting, by a first base site of the at least two base sites, a first portion of the packet to the communication unit; c) receiving, by the communication unit, the first portion to produce a received first portion; d) upon handoff of the communication unit from the first base site to a second base site of the at least two base sites, transmitting, by the communication unit, an acknowledgment message to the second base site, the acknowledgment message indicating receipt of the first portion; and e) upon receipt of the acknowledgment message, transmitting, by the second base site, a second portion of the packet to the communication unit.
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