发明名称 |
APPARATUS AND METHOD FOR EFFICIENT DELIVERY OF MULTICAST DATA OVER A PERSONAL ACCESS COMMUNICATIONS SYSTEM (PACS) |
摘要 |
A method, apparatus, article of manufacture, and a memory structure for multicasting data in a cellular personal access communication system is disclosed. The method comprises the steps of allocating a multicast packet terminal identifier to a multicast group when a subscriber unit in a cell requests membership in the multicast group, receiving a multicast packet having a global multicast address, determining a cell identifier from a mapping of the global multicast address to at least one local multicast identifier and a cell identifier, and forwarding the multicast packet to the cell according to the cell identifier. The apparatus comprises a radio port controller unit (106) having a packet data control unit (304) coupled to a radio port (104) configured to receive a multicast packet and a packet forwarding module (402). The packet data control unit (304) includes an allocation module (520) configured to allocate a local multicast identifier to a multicast group when a subscriber unit (102) in a cell (112) requests membership in the multicast group. The packet forwarding module (402) is configured to determine a cell identifier from a mapping of the global multicast address to at least one local packet terminal identifier and a cell identifier and to forward the multicast packet to a cell (112) according to the cell idenfier.
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申请公布号 |
CA2324512(A1) |
申请公布日期 |
2000.08.31 |
申请号 |
CA20002324512 |
申请日期 |
2000.02.23 |
申请人 |
HUGHES ELECTRONICS CORPORATION |
发明人 |
ZHANG, YOUGGUANG;RYU, BO;KHAN, TAYYAB;KAY, STANLEY E.;KAILAS, SIVAKUMAR;DAO, SON K. |
分类号 |
H04L12/18;H04L29/06;H04L29/12;(IPC1-7):H04Q7/22 |
主分类号 |
H04L12/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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