METHOD OF TRANSMITTING AND RECEIVING MULTICAST DATA
First Claim
1. A method of transmitting and receiving multicast data in a network in which a multicast service is provided from a specific network entity and then transmitted to at least one mobile terminal, the method comprising the steps of:
- receiving a query message containing information on the multicast service from the network entity;
if a request frame for requesting multicast data is received from the at least one mobile terminal, transmitting to the network entity a report message for allowing the mobile terminal to join the multicast service;
receiving multicast data corresponding to the multicast service from the network entity and transmitting the received multicast data to the at least one terminal;
checking the number of mobile terminals, which have joined the multicast service, based on a group table provided on the network to manage the mobile terminals; and
changing a multicast data transmitting and receiving mode according to the number of terminals which have joined the multicast service.
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Accused Products
Abstract
The present invention relates to a wireless mobile communication system, and more particularly, to a method of transmitting data to mobile terminals in the wireless mobile communication system capable of transmitting multicast data.
In order to solve the aforementioned problems in the prior art, a method of transmitting data to mobile terminals in a mobile terminal communicating with a network through which multicast data are transmitted. The method of the present invention comprises the steps of transmitting a requesting frame to the network for requesting the multicast data when the start of a multicast service is recognized through an upper layer of the mobile terminal; receiving a response frame from the network in response to the request frame; and receiving the multicast data from the network.
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Citations
31 Claims
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1. A method of transmitting and receiving multicast data in a network in which a multicast service is provided from a specific network entity and then transmitted to at least one mobile terminal, the method comprising the steps of:
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receiving a query message containing information on the multicast service from the network entity; if a request frame for requesting multicast data is received from the at least one mobile terminal, transmitting to the network entity a report message for allowing the mobile terminal to join the multicast service; receiving multicast data corresponding to the multicast service from the network entity and transmitting the received multicast data to the at least one terminal; checking the number of mobile terminals, which have joined the multicast service, based on a group table provided on the network to manage the mobile terminals; and changing a multicast data transmitting and receiving mode according to the number of terminals which have joined the multicast service. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of transmitting and receiving multicast data in a network in which a multicast service is provided from a specific network entity and then transmitted to at least one mobile terminal, the method comprising the steps of:
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transmitting to the mobile terminal a request message for confirming whether the mobile terminal exists in the network; receiving a response message corresponding to the request message from the mobile terminal; updating a group table provided in the network to manage the mobile terminal according to contents of the response message; and changing a multicast data transmitting and receiving mode according to the mobile terminal registered in the group table. - View Dependent Claims (13, 14)
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15. A method of transmitting and receiving multicast data in a network in which a multicast service is provided from a specific network entity and then transmitted to at least one mobile terminal, the method comprising the steps of:
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receiving from the mobile terminal, a transition message provided when the mobile terminal moves between networks; and updating a group table provided in the network to manage the mobile terminal according to contents of the transition message. - View Dependent Claims (16)
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17. A method of transmitting and receiving multicast data in a network in which a multicast service is provided from a specific network entity and then transmitted to at least one mobile terminal, the method comprising the steps of:
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receiving from the mobile terminal an association request message transmitted to the network by the mobile terminal; and updating a group table provided in the network to manage the mobile terminal according to contents of the association request message. - View Dependent Claims (18, 19, 20, 21)
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22. A method of transmitting and receiving multicast data in a mobile terminal that receives a multicast service from a specific network entity through an AP, the method comprising the steps of:
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transmitting a service activation request frame to the AP to receive the multicast service; receiving a service activation response frame from the AP; and receiving data from the AP according to a multicast data transmitting and receiving mode set by the AP, wherein the multicast data transmitting and receiving mode is determined according to the number of mobile terminals registered in a group table of the AP through the service activation request frame. - View Dependent Claims (23, 24, 25, 26)
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27. A method of transmitting and receiving multicast data in a mobile terminal that receives a multicast service from a specific network entity through an AP, the method comprising the steps of:
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receiving from the AP a request message for confirming whether the mobile terminal exists in a network; and transmitting a response message for updating a group table provided in the network, in response to the request message. - View Dependent Claims (28)
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29. A method of transmitting and receiving multicast data in a mobile terminal that receives a multicast service from a specific network entity through an AP, the method comprising the step of:
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transmitting a transition message for updating a group table provided in a network to manage the mobile terminal when the mobile terminal moves between networks, wherein the transition message contains a multicast MAC address for identifying the multicast service provided to the moving mobile terminal.
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30. A method of transmitting and receiving multicast data in a mobile terminal that receives a multicast service from a specific network entity through an AP, the method comprising the step of:
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transmitting an association request message to receive the multicast service when the mobile terminal moves between networks, wherein a group table provided in the network is updated to manage the mobile terminal according to the association request message. - View Dependent Claims (31)
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Specification