Abstract
in a mobile radio telephone system using TDMA or CDMA the mobile device (5 7) often need to determine timing and appropriate power for transmission to the base station. information broadcast sent by a base station the mobile station according to the average signal strength received to estimate the distance between each base station (1) thereby determining an approximate sector position. in the broadcast information may include a signal intensity with respect to the distance of the average emission distribution. mobile stations (5 7) determines the propagation loss of the transmission time to the base station and the proper power level and the transmission time sequence according to the broadcast information. Thus the mobile station (5 7) capable of transmitting a signal to the base station (1) according to the determined signal timing and power level.
In a mobile radio telephone system employing TDMA or CDMA mobile units (5 7) often must determine the timing and approximate power necessary for transmissions to a base station. Information broadcast by base stations allows the mobile station to approximate its distance from each base station (1) based on an average signal strength received and thereby determine the coarse sector location. Broadcast information may include the mean radial distribution of signal strength versus distance. From the broadcast information the mobile station (5 7) determines the propagation loss for a transmission to the base station and the appropriate power level and timing for transmissions. Accordingly the mobile station (5 7) transmits signals to the base station (1) at the determined signal timing and power level.
In a mobile radio telephone system employing TDMA or CDMA mobile units (5 7) often must determine the timing and approximate power necessary for transmissions to a base station. Information broadcast by base stations allows the mobile station to approximate its distance from each base station (1) based on an average signal strength received and thereby determine the coarse sector location. Broadcast information may include the mean radial distribution of signal strength versus distance. From the broadcast information the mobile station (5 7) determines the propagation loss for a transmission to the base station and the appropriate power level and timing for transmissions. Accordingly the mobile station (5 7) transmits signals to the base station (1) at the determined signal timing and power level.
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| Not Available | 21/10/1998 | ISLD-190001-020 | ERICSSON INC | No | Family Member | ||||
| Not Available | 21/10/1998 | ISLD-190001-060 | RESEARCH IN MOTION LTD | No | Family Member | ||||
| 4G | 10/11/2010 | ISLD-201011-017 | RESEARCH IN MOTION LTD |
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| US5670964A | Not Available | 21/10/1998 | ISLD-190001-020 | ERICSSON INC |
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| US5670964A | Not Available | 21/10/1998 | ISLD-190001-060 | RESEARCH IN MOTION LTD |
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Yes | Basis Patent | |||
| US5670964A | 4G | 10/11/2010 | ISLD-201011-017 | RESEARCH IN MOTION LTD |
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Yes | Basis Patent | |||
| US5404376A | Not Available | 21/10/1998 | ISLD-190001-060 | RESEARCH IN MOTION LTD |
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| US5404376A | 4G | 10/11/2010 | ISLD-201011-017 | RESEARCH IN MOTION LTD |
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| KR950704892A | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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