IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0390307
(1999-09-03)
|
우선권정보 |
KR-0036680 (1998-09-03) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Samsung Electronics, Co., Ltd.
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
36 인용 특허 :
4 |
초록
▼
A mobile station transmits a pilot signal, a common channel signal and a traffic channel signal for a reverse link. The mobile station normally transmits the common channel signal and the pilot signal at a predetermined transmission power, and transmits the pilot signal at a transmission power highe
A mobile station transmits a pilot signal, a common channel signal and a traffic channel signal for a reverse link. The mobile station normally transmits the common channel signal and the pilot signal at a predetermined transmission power, and transmits the pilot signal at a transmission power higher than the predetermined transmission power over a predetermined duration. The pilot signal transmitted over the predetermined duration is spread with a first spreading code over the duration where the pilot signal is transmitted at the predetermined transmission power, and is spread with a second spreading code over the duration where the pilot signal is transmitted at the transmission power higher than the predetermined transmission power.
대표청구항
▼
A mobile station transmits a pilot signal, a common channel signal and a traffic channel signal for a reverse link. The mobile station normally transmits the common channel signal and the pilot signal at a predetermined transmission power, and transmits the pilot signal at a transmission power highe
A mobile station transmits a pilot signal, a common channel signal and a traffic channel signal for a reverse link. The mobile station normally transmits the common channel signal and the pilot signal at a predetermined transmission power, and transmits the pilot signal at a transmission power higher than the predetermined transmission power over a predetermined duration. The pilot signal transmitted over the predetermined duration is spread with a first spreading code over the duration where the pilot signal is transmitted at the predetermined transmission power, and is spread with a second spreading code over the duration where the pilot signal is transmitted at the transmission power higher than the predetermined transmission power. downlink channel (DC) of the header slot (HS) comprises a synchronization channel (SYNCH) and at least one broadcast channel (GBCCH, OBCCH) for the transmission of cell and/or system data to all or selected mobile stations (2, 3, 4), and wherein the at least one broadcast channel (GBCCH, OBCCH) of the header slot (HS) comprises at least two identical repeated symbols. 6. Wireless transmission method according to claim 4, characterized in that a repeated structure of the synchronization channel (SYNCH) and/or the broadcast channel (GBCCH, OBCCH) of the header slot (HS) is used for a frequency and/or time synchronization by means of a correlation technique (5, 6). 7. Wireless transmission method, comprising the step of: transmitting data in frames according to a time divisional duplex (TDD) system, wherein each frame comprises a header slot (HS) and a plurality of traffic slots (TS), wherein the header slot (HS) and the individual traffic slots (TS) have the same time duration, wherein the header slot (HS) occupies a single time slot, wherein the header slot (HS) is subdivided into: a downlink channel (DC) for the transmission of synchronization data (SYNCH) and system data from a base station (1) to at least one mobile station (2, 3, 4), and an uplink channel (UC) for the transmission of registration data (RACH) from at least one mobile station (3) to the base station (1), wherein the downlink channel (DC) of the header slot (HS) comprises a synchronization channel (SYNCH) and at least one broadcast channel (GBCCH, OBCCH) for the transmission of cell and/or system data to all or selected mobile stations (2, 3, 4), wherein a general broadcast channel (GBCCH) is transmitted in the header slot (HS) of every frame, and wherein an optional broadcast channel (OBCCH) is only transmitted when the capacity of the general broadcast channel (GBCCH) is not sufficient or when specific data are to be transmitted. 8. Wireless transmission method according to claim 7, characterized in that, at least for transmission of the optional broadcast channel (OBCCH) of the header slot (HS), an OFDM system with a plurality of subcarriers (SC) is used. 9. Wireless transmission method, comprising the step of: transmitting data in frames according to a time divisional duplex (TDD) system, wherein each frame comprises a header slot (HS) and a plurality of traffic slots (TS), wherein the header slot (HS) and the individual traffic slots (TS) have the same time duration, wherein the header slot (HS) occupies a single time slot, and wherein the header slot (HS) is subdivided into: a downlink channel (DC) for the transmission of synchronization data (SYNCH) and system data from a base station (1) to at least one mobile station (2, 3, 4), and an uplink channel (UC) for the transmission of registration data (RACH) from at least one mobile station (3) to the base station (1), wherein, at least for the transmission of the synchronization channel, (SYNCH) an OFDM system comprising a plurality of equally spaced subcarriers (SC) is used, and wherein the time duration of a symbol (S1, S2) of the synchronization channel (SYNCH) is (1/n)×(the subcarrier spacing of the OFDM system), n being an integer greater than 1, of the time duration of OFDM modulated symbols in a traffic channel (TC), and only every n-th subcarrier (SC) is modulated in the synchronization channel (SYNCH). 10. Wireless transmission method according to claim 8, characterized in that the synchronization channel (SYNCH) is comprised of two identical repeated symbols (S1, S2) having respectively a time duration of 30 microseconds, and wherein a basic subcarrier spacing of 4.167 kHz is used for the OFDM system and only every eighth subcarrier (SC) is modulated in the synchronization channel (SYNCH). 11. Wireless transmission method according to claim 8, characterized in that in the optional broadcast channel (OBCCH) of the header slot (HS) a subset of subcarriers (S
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