Mobile broadcast signal demodulation chip for location determination
| Title: | Mobile broadcast signal demodulation chip for location determination |
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| Patent Number: | 9,204,417 |
| Publication Date: | December 01, 2015 |
| Appl. No: | 13/992503 |
| Application Filed: | June 08, 2011 |
| Abstract: | Disclosed is a mobile broadcast signal demodulation chip for location. The demodulation chip includes a reception demodulation and module and a measurement module, where the reception and demodulation module is configured to demodulate a spread spectrum signal for positioning inserted in the header of a time slot or in the header of a transmission frame of a received mobile broadcast signal to acquire navigation message information; and the measurement module is configured to measure and acquire location characteristic parameters. The demodulation chip is not only capable of demodulating broadcast data in a mobile broadcast signal, but also capable of demodulating a spread spectrum signal for positioning-inserted in the header of a time slot or in the header of a transmission frame of a received mobile broadcast signal to acquire navigation message information and location characteristic parameters, thereby effectively improving location accuracy. |
| Inventors: | Deng, Zhongliang (Beijing, CN); Lv, Ziping (Beijing, CN); Shi, Huli (Beijing, CN); Guan, Weiguo (Beijing, CN); Yuan, Xie (Beijing, CN); Na, Risu (Beijing, CN); Li, Hemin (Beijing, CN); Lai, Qifeng (Beijing, CN); Xu, Lianming (Beijing, CN) |
| Assignees: | Beijing University of Posts and Telecommunications (Beijing, CN), Beijing Shoukexintong Science & Technology Co., Ltd. (Beijing, CN) |
| Claim: | 1. A mobile broadcast signal demodulation chip for location determination for a mobile broadcast signal containing audio, video or multimedia content, comprising: a reception and demodulation module, configured to demodulate a spread spectrum signal for positioning inserted in a header of a time slot or in a header of a transmission frame of a received mobile broadcast signal to acquire navigation message information, wherein the navigation message information comprises a identifier of a mobile broadcast base station; a measurement module, configured to measure and acquire location characteristic parameters; and a processing module, configured to acquire location data according to the navigation message information acquired by the reception and demodulation module and the location characteristic parameters acquired by the measurement module, wherein the spread spectrum signal for positioning fills in a position of a transmitter identifier and the front part of a first synchronization signal in each of the time slots, and spreading codes are superimposed in the remaining portion of each time slot. |
| Claim: | 2. The demodulation chip according to claim 1 , wherein the location characteristic parameters comprise one or a plurality of a signal delay value, a signal delay difference, a signal strength, an angle of signal arrival, from each of mobile broadcast base stations to a terminal. |
| Claim: | 3. The demodulation chip according to claim 2 , wherein the navigation message information further comprises a time correction parameter, the location characteristic parameters are signal delay values or signal delay differences from the mobile broadcast base stations to the terminal, and the demodulation chip further comprises an error correction module, configured to correct the signal delay values or the signal delay differences by using the time correction parameter. |
| Claim: | 4. The demodulation chip according to claim 1 , further comprising a barometric measurement module, configured to measure an atmospheric pressure and transfer the measured atmospheric pressure to the processing module; wherein the processing module is further configured to acquire an altitude value according to the atmospheric pressure measured by the barometric pressure measurement module, and correct, by using the altitude value, the location data acquired by the processing module to acquire final location data. |
| Claim: | 5. The demodulation chip according to claim 1 , wherein the processing module acquires the location data by using a geometric location technology, and the navigation message information further comprises location information of the mobile broadcast base station. |
| Claim: | 6. The demodulation chip according to claim 1 , wherein the processing module acquires the location data by using a characteristic matching location technology. |
| Claim: | 7. The demodulation chip according to claim 1 , further comprising a communication module, configured to send the navigation message information acquired by the reception and demodulation module and the location characteristic parameters acquired by the measurement module to a network side location server, and receive the location data from the network side location server. |
| Claim: | 8. The demodulation chip according to claim 2 , further comprising a processing module, configured to acquire location data according to the navigation message information acquired by the reception and demodulation module and the location characteristic parameters acquired by the measurement module. |
| Claim: | 9. The demodulation chip according to claim 3 , further comprising a processing module, configured to acquire location data according to the navigation message information acquired by the reception and demodulation module and the location characteristic parameters acquired by the measurement module. |
| Claim: | 10. The demodulation chip according to claim 2 , further comprising a communication module, configured to send the navigation message information acquired by the reception and demodulation module and the location characteristic parameters acquired by the measurement module to a network side location server, and receive the location data from the network side location server. |
| Claim: | 11. The demodulation chip according to claim 3 , further comprising a communication module, configured to send the navigation message information acquired by the reception and demodulation module and the location characteristic parameters acquired by the measurement module to a network side location server, and receive the location data from the network side location server. |
| Claim: | 12. The demodulation chip according to claim 8 , further comprising a barometric measurement module, configured to measure an atmospheric pressure and transfer the measured atmospheric pressure to the processing module; wherein the processing module is further configured to acquire an altitude value according to the atmospheric pressure measured by the barometric pressure measurement module, and correct, by using the altitude value, the location data acquired by the processing module to acquire final location data. |
| Claim: | 13. The demodulation chip according to claim 8 , wherein the processing module acquires the location data by using a geometric location technology, and the navigation message information further comprises location information of the mobile broadcast base station. |
| Claim: | 14. The demodulation chip according to claim 8 , wherein the processing module acquires the location data by using a characteristic matching location technology. |
| Claim: | 15. The demodulation chip according to claim 9 , further comprising a barometric measurement module, configured to measure an atmospheric pressure and transfer the measured atmospheric pressure to the processing module; wherein the processing module is further configured to acquire an altitude value according to the atmospheric pressure measured by the barometric pressure measurement module, and correct, by using the altitude value, the location data acquired by the processing module to acquire final location data. |
| Claim: | 16. The demodulation chip according to claim 9 , wherein the processing module acquires the location data by using a geometric location technology, and the navigation message information further comprises location information of the mobile broadcast base station. |
| Patent References Cited: | 2003/0052822 March 2003 Rabinowitz et al. 2005/0181809 August 2005 Hild et al. 2006/0116818 June 2006 Chao et al. 2009/0115661 May 2009 Torimoto et al. 2009/0175379 July 2009 Rubin et al. 2009/0286556 November 2009 Yumoto et al. 2010/0091614 April 2010 Fujisawa 2011/0164690 July 2011 Ramesh et al. 12134830 February 2001 101354070 March 2009 102076003 May 2011 9620542 July 1996 |
| Assistant Examiner: | Bassett, Daniel G |
| Primary Examiner: | Kincaid, Lester |
| Attorney, Agent or Firm: | Dilworth & Barrese, LLP. |
| Accession Number: | edspgr.09204417 |
| Database: | USPTO Patent Grants |
| Language: | English |
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