IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0371947
(2009-02-17)
|
등록번호 |
US-8213397
(2012-07-03)
|
우선권정보 |
JP-08-208035 (1996-08-07) |
발명자
/ 주소 |
- Esmailzadeh, Riaz
- Yano, Takashi
- Doi, Nobukazu
|
출원인 / 주소 |
- FIPA Frohwitter Intellectual Property AG
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
11 |
초록
▼
In order to accomplish efficient communication of data between a base station and a plurality of mobile terminals, particular orthogonal codes are transmitted from the mobile stations to the base station as alert signals indicating the presence of data to be transmitted. The base station checks whet
In order to accomplish efficient communication of data between a base station and a plurality of mobile terminals, particular orthogonal codes are transmitted from the mobile stations to the base station as alert signals indicating the presence of data to be transmitted. The base station checks whether particular orthogonal codes are contained in the alert signals, and when the particular orthogonal codes are detected in the alert signals, information representing the detected orthogonal codes and the schedules for transmitting the data from the mobile terminals to the base station are transmitted from the base station to the mobile terminals as an alert response to the alert signals. When the information representing the orthogonal codes used for the alert signals are contained in the alert response transmitted from the base station to the mobile terminals, the data waiting to be transmitted is transmitted from the mobile terminals to the base station according the data transmission schedules in the alert response.
대표청구항
▼
1. A method of communicating between at least one mobile terminal and at least one base station, comprising the steps of: transmitting a first signal from the mobile terminal to the base station, the first signal including a code which is selected by the mobile terminal from a plurality of codes and
1. A method of communicating between at least one mobile terminal and at least one base station, comprising the steps of: transmitting a first signal from the mobile terminal to the base station, the first signal including a code which is selected by the mobile terminal from a plurality of codes and multiplied by a pseudo noise (PN) code, the selected code indicating that first data is to be sent from the mobile terminal;receiving and analyzing the first signal at the base station, which has the plurality of codes, in order to determine if the selected code of the plurality of codes is present in the first signal; andtransmitting a second signal from the base station to the mobile terminal, if the selected code of the plurality of codes is present, the second signal containing second data corresponding to the selected code. 2. The method according to claim 1, wherein the plurality of codes are orthogonal codes. 3. The method according to claim 1, wherein the second data includes a transmission schedule for the mobile terminal. 4. The method according to claim 1, further comprising the step of after transmitting the second signal from the base station to the mobile terminal, transmitting the first data from the mobile terminal to the base station based on said second signal. 5. The method according to claim 1, wherein the first signal transmitted from the mobile terminal to the base station is multiplied by each of a plurality of codes generated in the base station in order to determine whether the selected code is included in the first signal. 6. The method according to claim 5, wherein both the selected code included in the first signal transmitted from the mobile terminal to the base station and the plurality of codes generated in the base station comprise a plurality of bit periods and wherein the one code included in the first signal is multiplied by the plurality of codes generated in the base station by each of the plurality of bit periods and the result of multiplication of the first signal transmitted from the mobile terminal to the base station is accumulated for the plurality of bit periods in order to determine whether the selected code is included in the first signal. 7. The method according to claim 1, wherein the second data is a code number. 8. In a base station, a method of communicating with a plurality of mobile terminals, comprising the steps of: receiving a first signal from the mobile terminal, the first signal including a code which is selected by the mobile terminal from a plurality of codes to distinguish the first signal from other signals of other mobile terminals and multiplied by a pseudo noise (PN) code, the selected code indicating that first data is to be sent from the mobile terminal;analyzing the first signal in order to determine if the selected code is one of the plurality of codes; andtransmitting a second signal to the mobile terminal, if the selected code is one of the plurality of codes, the second signal containing second data corresponding to the selected code. 9. The method according to claim 8 wherein the plurality of codes are orthogonal codes. 10. The method according to claim 8, wherein the second data includes a transmission schedule for the mobile terminal. 11. The method according to claim 8, further comprising the step of after transmitting the second signal to the mobile terminal, receiving the first data from the mobile terminal based on said second signal. 12. The method according to claim 8, wherein in the steps of receiving and analyzing the first signal the base station multiplies the one code in the first signal transmitted from the mobile terminal by each of a plurality of codes generated in the base station in order to determine whether the selected code, included in the first signal, is one of the plurality of codes. 13. The method according to claim 12, wherein both the selected code included in the first signal from the mobile terminal and the plurality of codes generated in the base station comprise a plurality of bit periods, and wherein the one code included in the first signal from the mobile terminal is multiplied by the plurality of codes generated in the base station by each bit period, andthe result of multiplication is accumulated for the plurality of bit periods in order to determine whether the selected code, included in the first signal, is one of the plurality of codes. 14. The method according to claim 8, wherein the second data is a code number. 15. A base station capable of communicating with at least one mobile terminal, comprising: an input and output unit for receiving a first signal including a code which is selected by the mobile terminal from a plurality of codes and multiplied by a pseudo noise (PN) code, the selected code indicating that first data is to be sent from the mobile terminal; anda processing unit connected to the input and output unit for analyzing the first signal in order to determine if one code of the plurality of codes is detected in the first signal,wherein the input and output unit transmits a second signal if the one code of the plurality of codes is detected, the second signal containing second data corresponding to the one code detected in the first signal. 16. A base station according to claim 15, wherein the one code is selected from a set of orthogonal codes. 17. A base station according to claim 15, wherein the second data includes a transmission schedule for the mobile terminal. 18. A base station according to claim 15, wherein after transmitting the second signal to the mobile terminal, the input and output unit receives the first data from the mobile terminal based on second signal. 19. A base station according to claim 15, wherein the processing unit multiplies the one code in the first signal transmitted from the mobile terminal by each of a plurality of codes generated in the base station in order to detect whether the one code is included in the first signal. 20. A base station according to claim 19, wherein both the one code included in the first signal from the mobile terminal and the plurality of codes generated in the base station comprise a plurality of bit periods, and wherein in the processing unit the one code included in the first signal from the mobile terminal is multiplied by the plurality of codes generated in the base station by each of the plurality of bit periods and the result of multiplication of the first signal transmitted from the mobile terminal is accumulated for the plurality of bit periods in order to detect whether the one code is included in the first signal. 21. A base station according to claim 15, wherein the second data is a code number.
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