公开(公告)号：JP2000286793A

公开(公告)日：2000-10-13

申请号：JP2000069354

申请日：2000-03-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JIANG FRANCES ,  KAMEL RAAFAT EDWARD ,  LI QUINN ,  SALVARANI ALEXANDRO FEDERICO ,  WEAVER CARL FRANCIS

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/12 ,  H04W52/24 ,  H04W52/26 ,  H04W52/36 ,  H04W52/40 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To obtain a communication system whose transmission power can be controlled. SOLUTION: The power control method in a wireless communication system includes a step where a target value 130 of signal quality of a received signal 270 is decided, a step where a power controlled variable conversion coefficient 245 is obtained, a step where the target value 130 of the signal quality is converted by the power controlled variable conversion coefficient 245, a step where the signal quality value 160 of the received signal 270 is measured, a step where the measured signal quality value 160 is compared with the converted signal quality target value 260, a step where increased power of the received signal 270 is requested in response to it that the signal quality value 160 of the received signal 270 is lower than the converted signal quality target value 260, and a step where decreased power of the received signal 270 is requested in response to it that the signal quality value 160 of the received signal 270 is higher than the converted signal quality target value 260.

公开(公告)号：BR0004560A

公开(公告)日：2001-04-03

申请号：BR0004560

申请日：2000-08-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KIM KYOUNG II ,  SALVARANI ALEXANDRO FEDERICO

IPC: H04B17/00 ,  H04B7/005 ,  H04B7/26 ,  H04M3/00 ,  H04W52/34 ,  H04W72/08 ,  H04Q7/38

Abstract: A method for preventing overload conditions in a communication system. The communication system performs a call load analysis and admits a subscriber requesting admission (or responding to a page) to the system based on the result of the call load analysis. The call load analysis is based on the signal to noise power ratios of all subscribers already admitted to the communication system. External jammer signals that interfere with subscriber signals thus reducing the coverage of the communication system do not affect the call load analysis. The jammer signals therefore, do not hinder an efficient use of the capacity of the communication system. A threshold value is established and such threshold value is compared to an average call load value calculated from a plurality of instantaneous call load values. When the calculated average call load value is substantially equal to or above the established threshold, no subscribers are admitted to the communication system; subscribers are admitted when the calculated average call load value is below the established threshold. Individual subscribers whose contributions to the average call load value are deemed significant (tending to cause or actually causing overload conditions) are identified and removed from the system.

公开(公告)号：CA2315847A1

公开(公告)日：2001-02-17

申请号：CA2315847

申请日：2000-08-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KIM KYOUNG IL ,  SALVARANI ALEXANDRO FEDERICO

IPC: H04B17/00 ,  H04B7/005 ,  H04B7/26 ,  H04M3/00 ,  H04W52/34 ,  H04W72/08 ,  H04Q7/36

Abstract: A method for preventing overload conditions in a communication system. T he communication system performs a call load analysis and admits a subscriber requesting admission (or responding to a page) to the system based on the result of the call load analysis. The call load analysis is based on the signal to noise power ratio s of all subscribers already admitted to the communication system. External jammer signals that interfere with subscriber signals thus reducing the coverage of the communication system do not affect the call load analysis. The jammer signals therefore, do not hinder an efficient use of the capacity of the communication system. A threshold value is established and such threshold value is compared to an average call load val ue calculated from a plurality of instantaneous call load values. When the calculated average call load value is substantially equal to or above the established threshold, no subscribers are admitted to the communication system; subscribers are admitted when the calculated average call load value is below the established threshold. Individual subscribers whose contributions to the average call load value are deemed significant (tending to cause or actually causing overload conditions) are identified and removed from the system.

公开(公告)号：BR0001277A

公开(公告)日：2000-12-26

申请号：BR0001277

申请日：2000-03-10

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JIANG FRANCES ,  WEAVER CARL FRANCIS ,  KAMEL RAAFAT EDWARD ,  LI QUINN ,  SALVARANI ALEXANDRO FEDERICO

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/12 ,  H04W52/24 ,  H04W52/26 ,  H04W52/36 ,  H04W52/40 ,  H04Q7/22

公开(公告)号：AU2066600A

公开(公告)日：2000-09-21

申请号：AU2066600

申请日：2000-03-06

Applicant: LUCENT TECHNOLOGIES INC

Inventor： JIANG FRANCES ,  KAMEL RAAFAT EDWARD ,  LI QUINN ,  SALVARANI ALEXANDRO FEDERICO ,  WEAVER CARL FRANCIS

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/12 ,  H04W52/24 ,  H04W52/26 ,  H04W52/36 ,  H04W52/40 ,  H04Q7/30

公开(公告)号：AU5196900A

公开(公告)日：2001-02-22

申请号：AU5196900

申请日：2000-08-11

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KIM KYOUNG IL ,  SALVARANI ALEXANDRO FEDERICO

IPC: H04B17/00 ,  H04B7/005 ,  H04B7/26 ,  H04M3/00 ,  H04W52/34 ,  H04W72/08 ,  H04Q7/20

Abstract: A method for preventing overload conditions in a communication system. The communication system performs a call load analysis and admits a subscriber requesting admission (or responding to a page) to the system based on the result of the call load analysis. The call load analysis is based on the signal to noise power ratios of all subscribers already admitted to the communication system. External jammer signals that interfere with subscriber signals thus reducing the coverage of the communication system do not affect the call load analysis. The jammer signals therefore, do not hinder an efficient use of the capacity of the communication system. A threshold value is established and such threshold value is compared to an average call load value calculated from a plurality of instantaneous call load values. When the calculated average call load value is substantially equal to or above the established threshold, no subscribers are admitted to the communication system; subscribers are admitted when the calculated average call load value is below the established threshold. Individual subscribers whose contributions to the average call load value are deemed significant (tending to cause or actually causing overload conditions) are identified and removed from the system.

公开(公告)号：CA2299771A1

公开(公告)日：2000-09-15

申请号：CA2299771

申请日：2000-02-28

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SALVARANI ALEXANDRO FEDERICO ,  WEAVER CARL FRANCIS ,  KAMEL RAAFAT EDWARD ,  LI QUINN ,  JIANG FRANCES

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/12 ,  H04W52/24 ,  H04W52/26 ,  H04W52/36 ,  H04W52/40 ,  H04Q7/36

Abstract: A method of controlling the power in a wireless communication system (200). In one embodiment of the invention, a base station (210) determines the information rate of a signal to be transmitted (270) to a mobile station (220), and obtains the variable power control scaling factor (245) based on this information rate. The base station (210) then transmits the variable power control scaling factor (245) to the mobile station (220). The mobile station (220) determines a target signal quality measurement (130) for a received signal (270) from the base station (220), such as a target E b/N0 (130), and scales the target E b/N0 (130) by the variable power control scaling factor (245). The mobile station (220) also obtains an information rate scaling factor based on the information rate of the received signal (270), and further scales the target E b/N0 by this information rate scaling factor. The mobile station (220) then compares the target E b/N0 (130) to a measured E b/N0 (160) of the received signal (270). An increase in power of the received signal (270) is requested when the measured E b/N0 (160) of the received signal (270) is smaller than the scaled E b/N0 (260). A decrease in power of the received signal (270) is requested when the measured E b/N0 (160) of the received signal (270) is larger than the scaled E b/N0 (260). Providing the variable power control scaling factor (245) to the mobile station (220) allows frames having an information rate lower than the full rate to be transmitted at a power even lower than the power of a frame having an information rate equal to the full rate times the information scaling factor.