Apparatus and method for providing television broadcasting service in a mobile communication system

• US 20030032389A1
• Filed: 08/02/2002
• Published: 02/13/2003
• Est. Priority Date: 08/07/2001
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Byung-Hwan, Lee, Yong-Hwan
• Granted Patent: US 6,950,624 B2
• Time in Patent Office: Days
• US Class Current: 455/3.01
• CPC Class Codes: H04H 60/91 Mobile communication networks for accessing the Internet H04H60/85
• CPC Class Codes: H04M 2203/205 Broadcasting broadcasting in packet switching networks H04L12/18
• CPC Class Codes: H04M 2207/14 cable networks
• CPC Class Codes: H04M 2207/18 wireless networks
• CPC Class Codes: H04M 3/4872 Non-interactive information services
• CPC Class Codes: H04M 7/12 for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
• CPC Class Codes: H04N 21/2343 involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements video transcoding H04N19/40; media packet handling at the source H04L65/762
• CPC Class Codes: H04N 21/234309 by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo conversion of standards in analog television systems H04N7/01
• CPC Class Codes: H04N 21/234318 by decomposing into objects, e.g. MPEG-4 objects
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/25808 Management of client data terminal profiles in network data switching protocols H04L67/303
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/4348 Demultiplexing of additional data and video streams
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/488 Data services, e.g. news ticker systems specially adapted for using meteorological information in broadcast systems H04H60/71
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/643 Communication protocols network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP], H04L65/65
• CPC Class Codes: H04N 21/84 Generation or processing of descriptive data, e.g. content descriptors systems specially adapted for using meta-information in broadcast systems H04H60/73
• CPC Class Codes: H04N 7/173 : with two-way working, e.g. subscriber sending a programme selection signal

Abstract

An apparatus and method for providing broadcasting service in a mobile communication system. A format converter transcodes video data received from video resources to a format suitable for the mobile communication system. A base station spreads the transcoded video data with a predetermined dedicated spreading code and broadcasts the spread video signal. A mobile station receives and despreads the broadcasting signal from the base station with the spreading code.

Claims

1. An apparatus for providing broadcasting service in a mobile communication system, comprising:

a format converter for transcoding video data received from one or more video resources to a format suitable for a mobile communication system;

a base station for spreading the transcoded video data with a predetermined spreading code and broadcasting the spread video signal; and

a mobile station for receiving and despreading the broadcasting signal from the base station with the spreading code.

2. The apparatus of claim 1, wherein the base station transmits the video data with an assignment of a dedicated broadcasting frequency.

3. The apparatus of claim 1, wherein the predetermined spreading code is a Walsh code.

4. The apparatus of claim 1, wherein the one or more video resources include a television broadcasting system.

13. The method of claim 11, further comprising:

periodically monitoring a quick paging channel from the base station and determining whether there is paging for a voice call during receiving the broadcasting signal; and

tuning the demodulator to a normal frequency of the base station in response to paging for the voice call, receiving a paging message, and setting up the voice call.

5. A base station device for assigning a dedicated frequency for TV broadcasting, comprising:

a channel encoder for encoding TV broadcasting channel data;

an interleaver for interleaving the encoded data;

an orthogonal spreader for spreading the interleaved data with a predetermined Walsh code corresponding to the TV broadcasting channel;

a quick paging channel transmitter for repeating quick paging indicators a predetermined number of times and outputting the repeated quick paging indicators;

an adder for summing outputs of the orthogonal spreader and the quick paging channel transmitter;

a Pseudorandom noise (“

PN”

) spreader for spreading an output of the adder with a predetermined PN code; and

a Radio Frequency (“

RF”

) module for transmitting the PN-spread signal using a dedicated frequency.

6. The base station device of claim 5, further comprising a paging channel transmitter for transmitting an overhead message having a list of neighbor base stations supporting the TV broadcasting.

17. The base station device of claim 6, wherein the overhead message includes a Private Neighbor List Message (“

PNLM”

).

7. A mobile station device for receiving a broadcasting signal that has been spread with predetermined spreading codes and transmitted using a dedicated frequency for broadcasting in a base station, comprising:

an RF module for being tuned to a dedicated frequency and receiving a broadcasting signal from a base station;

a despreader for despreading the received broadcasting signal with a spreading code corresponding to a particular TV broadcasting channel;

a deinterleaver for deinterleaving the despread broadcasting signal;

a channel decoder for decoding the deinterleaved broadcasting signal;

a video decoder for video-decoding an output of the channel decoder,

wherein the output of the video decoder is processed and displayed on a display.

8. The mobile station device of claim 7, further comprising a quick paging signal monitor for monitoring paging for a voice call from the base station.

9. The mobile station device of claim 7, wherein the spreading code is a Walsh code.

10. The mobile station device of claim 7, wherein the video decoder is an MPEG4 decoder.

11. A method of receiving a broadcasting signal from a base station in a mobile station, which has been spread with predetermined spreading codes and transmitted using a dedicated frequency for broadcasting in the base station, comprising:

assigning a spreading code corresponding to a particular TV channel to a demodulator in response to a key input indicating a request for broadcasting of a TV channel;

tuning the demodulator to a dedicated frequency and despreading a broadcasting signal from a base station with the spreading code; and

displaying the despread broadcasting signal on a display.

12. The method of claim 11, wherein the spreading code is a Walsh code.

14. The method of claim 11, further comprising:

determining whether a handoff is an inter-zone handoff in a zone where one or more neighboring base stations support a broadcasting service, in response to the handoff occurring during receiving of the broadcasting signal;

implementing the handoff without registration if the handoff is determined to be the inter-zone handoff;

tuning to a normal frequency of a new base station and receiving an overhead message from the new base station if the handoff is determined to be beyond the zone;

determining whether the new base station supports a broadcasting service by analyzing the overhead message;

receiving a broadcasting signal from the new base station if it is determined that the new base station supports the broadcasting service; and

entering an idle state if the new base station does not support the broadcasting service.

15. A method of providing TV broadcasting with a dedicated frequency in a base station, comprising:

encoding TV broadcasting channel data and outputting coded symbols;

spreading the coded symbols with one or more predetermined spreading codes corresponding to TV broadcasting channels and generating TV broadcasting channel signals;

generating a quick paging channel signal by repeating quick paging indicators a predetermined number of times;

adding the TV broadcasting channel signals and the quick paging channel signal;

spreading the added signal with a PN code; and

transmitting the PN-spread signal using a dedicated frequency.

16. The method of claim 15, further comprising transmitting an overhead message having a list of neighbor base stations supporting a broadcasting service using a normal frequency.