Abstract: There is disclosed a method, apparatus and a computer code to maintain databases. In the method a first database containing information of a usage of a frequency spectrum is maintained for a first geographical area by the apparatus. Information is received from a second database apparatus on a second geographical area. The first database apparatus determines whether said first geographical area and said second geographical area are at least partly overlapping. A linkage table is maintained to provide an indication on the result of the determination, wherein said indication is indicative of whether said first geographical area and said second geographical area are at least partly overlapping.

Abstract: There is disclosed a method, apparatus and a computer code to maintain databases. In the method a first database containing information of a usage of a frequency spectrum is maintained for a first geographical area by the apparatus. Information is received from a second database apparatus on a second geographical area. The first database apparatus determines whether said first geographical area and said second geographical area are at least partly overlapping. A linkage table is maintained to provide an indication on the result of the determination, wherein said indication is indicative of whether said first geographical area and said second geographical area are at least partly overlapping.

Abstract: The present invention provides a method and a device in which two or more fingers of a RAKE receiver can locked to a multipath received signal in a situation of a fat finger impulse response. One embodiment of the present invention assigns two RAKE fingers to an impulse response so that one finger tracks the impulse response with an Early-Ontime DLL method and the other finger is tracking the impulse response with an Ontime-Late DLL method. The method comprises detecting the delay between the received signal and a delayed version, comparing the delay with a pre-determined threshold and when the delay falls below the threshold, changing the tracking method of the delayed version of the received signal to a second tracking method.

Abstract: Apparatus, and an associated method, for facilitating communications in a radio communication system that utilizes shared, packet channels. One or more common control channels are defined upon a forward link extending between a network part of the radio communication system and the mobile stations thereof. Assignment information sets so generated by an assignment information generator and formatted into data frames for communication to the mobile stations. The mobile stations monitor a single shared packet control channel to receive the assignment information sent thereto upon the common shared channel.

Abstract: Apparatus, and an associated method, for facilitating communications in a radio communication system that utilizes shared, packet channels. One or more common control channels are defined upon a forward link extending between a network part of the radio communication system and the mobile stations thereof. Assignment information sets so generated by an assignment information generator and formatted into data frames for communication to the mobile stations. The mobile stations monitor a single shared packet control channel to receive the assignment information sent thereto upon the common shared channel.

Abstract: Apparatus, and an associated method, for facilitating communications in a radio communication system that utilizes shared, packet channels. One or more common control channels are defined upon a forward link extending between a network part of the radio communication system and the mobile stations thereof. Assignment information sets so generated by an assignment information generator and formatted into data frames for communication to the mobile stations. The mobile stations monitor a single shared packet control channel to receive the assignment information sent thereto upon the common shared channel.

Abstract: Apparatus, and an associated method, for facilitating communications in a radio communication system that utilizes shared, packet channels. One or more common control channels are defined upon a forward link extending between a network part of the radio communication system and the mobile stations thereof. Assignment information sets so generated by an assignment information generator and formatted into data frames for communication to the mobile stations. The mobile stations monitor a single shared packet control channel to receive the assignment information sent thereto upon the common shared channel.

Abstract: The present invention provides a method and a device in which two or more fingers of a RAKE receiver can locked to a multipath received signal in a situation of fat finger impulse response. One embodiment of the present invention assigns two RAKE fingers to an impulse response so that one finger is tracking the impulse response with Early-Ontime DLL method and the other finger is tracking the impulse response with Ontime-Late DLL method. The method comprises detecting the delay between the received signal and its delayed version, comparing the delay with a pre-determined threshold and in the case when the delay falls below the threshold, changing the tracking method of the delayed version of the received signal to a second tracking method.

Abstract: In the front end of a CDMA cellular or broadband PCS mobile phone receiver, a switched bypass connection is provided to bypass the low noise amplifier, sending the received signal through an amplifier bypass connection. The amplifier bypass connection may include an attenuator. The switched bypass is activated by a control signal generated by a digital signal processor. The digital signal processor analyzes the received signal to detect and determine the relative contribution of the IMD interference to the total received signal power and, when the IMD interference exceeds a predetermined level, sends a control signal to bypass the low noise amplifier. Identification of the presence of IMD interference is by spectral estimation to discern when the mobile phone is in the presence of large near-band signals from an AMPS or other narrow-band base station which causes in-band IMD.

Abstract: A method, and apparatus for accomplishing the method, that causes the power of a narrow bandwidth signal to be spread to a wider bandwidth. The method operates by modulating the power of the spectral components that are located close to a carrier frequency. This reduces the DC component of a base band signal and correspondingly reduces the charging of a AC coupling capacitors in the base band circuitry. As a result, receiver recovery time is increased, and a more accurate signal strength estimate is made by a mobile telephone. In one embodiment of the invention a local oscillator signal (LO1) for an IF stage is first offset from a nominal frequency for an RF channel to be measured, and is then subsequently made equal to the nominal frequency. The variation in LO1 introduces phase noise which results in the modulation of the base band signal.