System and method for receiving over a network a broadcast from a broadcast source

• US 7,296,091 B1
• Filed: 06/19/2000
• Issued: 11/13/2007
• Est. Priority Date: 06/18/1999
• Status: Expired due to Fees

• Current Assignee: Trustees Of Columbia University In The City Of New York (Columbia University)
• Original Assignee: Trustees Of Columbia University In The City Of New York (Columbia University)
• Inventors: Dutta, Ashutosh, Schulzrinne, Henning, Yemini, Yechiam
• Primary Examiner(s): WINDER, PATRICE L
• Application Number:
  US09/596,864
• Time in Patent Office: 2,703 Days
• Field of Search: 709/230, 709/231, 709/237, 725/91, 725/116, 345/721, 370/401, 370/389
• US Class Current: 709/245
• CPC Class Codes: H04H 20/42 Arrangements for resource management
• CPC Class Codes: H04H 20/82 using signals not modulated onto a carrier
• CPC Class Codes: H04L 12/185 with management of multicast group membership
• CPC Class Codes: H04L 12/1854 with non-centralised forwarding system, e.g. chaincast
• CPC Class Codes: H04L 12/1859 adapted to provide push services, e.g. data channels
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/611 for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04N 21/25841 involving the geographical location of the client retrieval from the Internet by querying based on geographical locations G06F16/9537; arrangements for identifying locations of receiving stations in broadcast systems H04H60/51; location of the user terminal in data switching networks H04L67/52; services making use of the location of users or terminals in wireless networks H04W4/02; locating users or terminals in wireless networks H04W64/00
• CPC Class Codes: H04N 21/6125 involving transmission via Internet transmission by internet of broadcast information H04H60/82
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/6405 Multicasting data broadcast and multicast in packet switching networks H04L12/18
• CPC Class Codes: H04N 21/6437 Real-time Transport Protocol [RTP]
• CPC Class Codes: H04N 21/812 involving advertisement data advertising per se G06Q30/02
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests
• CPC Class Codes: H04Q 2213/13204 Protocols
• CPC Class Codes: H04Q 2213/13242 Broadcast, diffusion, multicast, point-to-multipoint (1 : N)
• CPC Class Codes: H04Q 2213/13248 Multimedia
• CPC Class Codes: H04Q 2213/13376 : Information service, downloading of information, 0800/0900 services
• CPC Class Codes: H04Q 2213/13389 : LAN, internet

Abstract

A system and method for providing a broadcast to a receiver via a communication network. In particular, the broadcast is received via at least one global multicast channel. At least one local multicast channel is associated with the global multicast address. Then, a communication link is established between the receiver and the local multicast channel, and the broadcast is routed from the global multicast channel to the local multicast channel to provide the broadcast to the receiver. The number of the receivers which are receiving the broadcast may be determined. The receiver may include an Internet Protocol (IP) interface which enables the receiver to receive the broadcast via an IP-type multicast communication. The receiver may also be wireless, and can receive the broadcast in a first subnet using a multicast communication. Prior to the receiver moving to a second subnet, a request is generated by the receiver to receive the broadcast in the second subnet. After receiving the request, the broadcast is provided to the wireless receiver in the second subnet using the multicast communication.

Claims

1. A method for providing a broadcast of content to one or more receivers via a communication network, comprising the steps of:

a) receiving the broadcast on at least one global multicast channel;

b) associating at least one local multicast channel with the at least one global multicast channel;

c) receiving a request signal from the receiver to receive the broadcast;

d) connecting the receiver to the at least one local multicast channel;

e) routing the broadcast from the at least one global multicast channel to the at least one local multicast channel to provide the broadcast to the receiver;

wherein the at least one local multicast channel comprises an IP address;

f) inserting the broadcast into the at least one global multicast channel;

g) transmitting the broadcast at the at least one global multicast channel from a global server to a local server;

wherein the at least one global multicast channel is a plurality of global multicast channels, and the at least one local multicast channel is a plurality of local multicast channels;

wherein the broadcast is inserted into a first global channel of the global multicast channels;

wherein the first global channel is associated with a first local channel of the local multicast channels;

wherein the receiver receives the broadcast from the first global channel on the first local channel;

wherein the broadcast is inserted into the first global channel by the global server;

wherein the global multicast channels are received by the local server;

h) at the global server, inserting a further broadcast of content into a second global channel of the global multicast channels;

i) receiving a request from the receiver to receive the further broadcast from the local server;

j) if the second global channel is not available to the local server, obtaining access for the local server to the second global channel;

k) after step (i), associating the second global channel with a second local channel of the local multicast channels; and

l) providing the further broadcast to the receiver by connecting the receiver to the second local channel and routing the further broadcast from the second global channel to the second local channel.

2. A method for providing and maintaining a real-time broadcast to a wireless receiver on a communications network, comprising the steps of:

a) providing the real-time broadcast into the receiver in a first subnet using a multicast communication;

b) receiving, from the wireless receiver prior to leaving the first subnet, a request to receive the real-time broadcast in a second subnet, such that the second subnet receives the real-time broadcast after the request, so as to move the real-time broadcast from the first subnet to the second subnet;

c) after receiving the request from the wireless receiver, providing the real-time broadcast to the wireless receiver in the second subnet using the multicast communication; and

d) stopping the transmission of the real-time broadcast in the first subnet after receiving the request from the receiver.

3. The method according to claim 2, wherein the wireless receiver includes an Internet Protocol (IP) interface which enables the receiver to receive the real-time broadcast via an IP-type multicast communication.

4. The method according to claim 2, wherein the real-time broadcast is received on at least one global multicast channel, and further comprising the steps of:

e) associating at least one local multicast channel with the at least one global multicast channel; and

f) establishing communication to the wireless receiver over the at least one local multicast channel, and wherein the real-time broadcast is provided to the wireless receiver by routing the real-time broadcast from the at least one global multicast channel to the at least one local multicast channel.

5. The method according to claim 2, wherein normal content of the real-time broadcast has at least one break at a respective time and for a respective duration, and further comprising the steps of:

e) inserting respective predefined content into the real-time broadcast during the at least one break in the normal content; and

f) providing the real-time broadcast to the wireless receiver after the respective predefined content is inserted into the real-time broadcast during the at least one break in the normal content.

6. A receiver, comprising:

a tuner receiving at least one of a radio broadcast and a television broadcast;

an Internet Protocol-type communication device configured to receive a real-time Internet Protocol broadcast via a multicast communication;

a switching device switchably coupled between the tuner and the Internet Protocol-type communication device; and

the tuner presenting categorized broadcasts to a user such that the user can select the broadcast to receive, wherein the switching device is switchable between a first state and a second state, the first state enabling the tuner to receive broadcast signals, the second state enabling the Internet Protocol-type communication device to receive Internet Protocol type data using the multicast communication,

wherein the receiver is wireless, and the Internet Protocol-type communication device receives the real-time broadcast in a first subnet using the multicast communication,

wherein, prior to the wireless receiver moving from the first subnet to a second subnet, the Internet Protocol-type communication device transmits a request to receive the real-time broadcast in the second subnet,

wherein the second subnet receives the real-time broadcast after the request, and

wherein, after transmitting the request, the Internet Protocol-type communication device receives the real-time broadcast in the second subnet by utilizing the multicast communication.

7. A method for providing and maintaining a real-time broadcast to a wireless receiver on a communications network, comprising the steps of:

a) providing the real-time broadcast into the receiver in a first subnet using a multicast communication;

b) receiving, from the wireless receiver, a request to receive the real-time broadcast in a second subnet while configuring an address in said second subnet, such that the second subnet receives the real-time broadcast after the request, so as to move the real-time broadcast from the first subnet to the second subnet;

c) after receiving the request from the wireless receiver, providing the real-time broadcast to the wireless receiver in the second subnet using the multicast communication; and

d) stopping the transmission of the real-time broadcast in the first subnet after receiving the request from the receiver.

8. The method according to claim 7, wherein the wireless receiver includes an Internet Protocol (IP) interface which enables the receiver to receive the real-time broadcast via an IP-type multicast communication.

9. The method according to claim 7, wherein the real-time broadcast is received on at least one global multicast channel, and further comprising the steps of:

e) associating at least one local multicast channel with the at least one global multicast channel; and

f) establishing communication to the wireless receiver over the at least one local multicast channel, and wherein the real-time broadcast is provided to the wireless receiver by routing the real-time broadcast from the at least one global multicast channel to the at least one local multicast channel.

10. The method according to claim 7, wherein normal content of the real-time broadcast has at least one break at a respective time and for a respective duration, and further comprising the steps of:

e) inserting respective predefined content into the real-time broadcast during the at least one break in the normal content; and

f) providing the real-time broadcast to the wireless receiver after the respective predefined content is inserted into the real-time broadcast during the at least one break in the normal content.