Apparatus and method for broadcasting data

• US 20070249380A1
• Filed: 04/19/2006
• Published: 10/25/2007
• Est. Priority Date: 04/19/2006
• Status: Abandoned Application

• Current Assignee: Motorola Mobility, Inc. (Lenovo Group Ltd.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Love, Robert, Buckley, Michael, Stewart, Kenneth, Bachu, Raja, Smolinske, Jeffrey, Schorman, Eric
• Application Number:
  US11/406,762
• Publication Number:
  US 20070249380A1
• Time in Patent Office: Days
• US Class Current: 455/502
• CPC Class Codes: H04B 7/022 Site diversity; Macro-diversity using two or more spaced independent antennas H04B7/04
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Abstract

Disclose is a synchronized wireless communication network (100) operating in single frequency network mode comprising a first base station (502) broadcasting, on a first channel, broadcast data and a common sequence (508) that is generated from a first channel identifier, and wherein the first base station transmits data on a common control channel. A second base station (510), adjacent to the first base station and synchronized with the first base station, the second base station simultaneously broadcasting on the first channel the broadcast data and the common sequence, and wherein the second base station transmits data on a common control channel.

Claims

1. A synchronized wireless communication network operating in single frequency network mode comprising:

a first base station broadcasting, on a first channel, broadcast data and a common sequence that is generated from a first channel identifier, and wherein the first base station transmits data on a first common control channel; and

a second base station, proximal to the first base station and synchronized with the first base station, the second base station simultaneously broadcasting on the first channel the broadcast data and the common sequence, and wherein the second base station transmits data on a second common control channel.

2. The synchronized network of claim 1, wherein the common control channel is a broadcast control channel (BCCH).

3. The synchronized network of claim 1, wherein a first base station specific sequence is transmitted by the first base station and is generated based on a first base station identifier (BCC).

4. The synchronized network of claim 3, wherein a second base station specific sequence is transmitted by the second base station and is generated based on a second base station identifier (BCC).

5. The synchronized network of claim 1, the common sequence is broadcast on the same frequency as the first base station specific sequence during non overlapping time intervals.

6. The synchronized network of claim 1, wherein the first channel is a broadcast channel having a broadcast channel identifier.

7. The synchronized network of claim 6, wherein the broadcast channel comprises a plurality of hopping frequencies.

8. The synchronized network of claim 1, wherein the broadcast data further comprising a data burst in which the common sequence is generated according to the broadcast channel identifier and is substantially simultaneously transmitted by the first base station on the first channel and by the second base station on the first channel.

9. A method for broadcasting data comprising:

transmitting during a first time interval a first predetermined sequence generated as a function of a base station identifier; and

transmitting during a second time interval, a second predetermined sequence generated as a function of a broadcast channel identifier.

10. The method of claim 9 wherein the at least first and a least second predetermined sequences are transmitted on a time-division basis within data bursts on the same channel.

11. The method of claim 10 where the predetermined sequences generated from the broadcast channel identifier vary as a function of time.

12. A method in a mobile station comprising

waking from sleep mode at a time when a burst is received containing the broadcast training sequence code;

and

training the mobile station equalizer with the training sequence code received.

13. A method in a mobile station comprising:

determining whether a received frame is a broadcast frame or a unicast frame based on a training sequence code received in a burst; and

training the mobile station equalizer with the training sequence code received.

14. A method for receiving broadcast data from a synchronized network having a plurality of base stations comprising:

receiving a first data burst from a first base station, the first data burst including a training sequence code that is generated from a broadcast channel identifier;

receiving a second data burst from a second base station, the second data burst including the training sequence code generated from the broadcast channel identifier.

15. The method of claim 14, further comprising receiving on a same broadcast channel, identified by the broadcast channel identifier, the first data burst from the first base station and the second data burst from the second base station.

16. A method for broadcasting data by a single frequency network, wherein each base station participating in the SFN uses a single broadcast channel identifier, comprising:

transmitting a base station associated unicast training sequence code in a first time burst, and

transmitting a broadcast channel identifier associated training sequence code in a second time burst.

17. The method of claim 16 wherein the first time burst and the second time burst are non-overlapping.

18. The method of claim 17 where the predetermined sequences are equalizer training sequences.