Abstract:
Idle mode power consumption reduction in wireless communications. Within a wireless communication device that is operative to communicate with any one of a number of servicing cells, paging broadcasts from more than one of these servicing cells are received and undergo only a limited amount of processing before being stored for use in subsequent processing that may be performed later. This partitioned processing allows the turning off of certain components that are not needed and/or no longer needed for determining the system frame numbers associated with various servicing cells to effectuate timing synchronization. Certain modules within such a wireless communication device may perform processing using the full capabilities of the wireless communication device to generate initially processed signal, and then after such signals are stored, then only partial processing capability of the wireless communication device may be employed, even though perhaps being slower, to complete the processing.
Abstract:
A method of processing digital samples of a signal received at a receiver of a wireless communication system includes monitoring channel conditions and generating a channel indicator including at least one channel parameter by performing at least one of: estimating a channel mobility parameter and comparing it with a threshold; estimating a channel parameter of the energy of the channel outside a predefined temporal window and comparing it with a threshold; estimating a channel temporal duration parameter and establishing if it meets predetermined criteria; estimating a channel-zero location parameter and establishing if it meets predetermined criteria; estimating a received-signal signal-to-disturbance power ratio and comparing it to a threshold; estimating an estimated-channel-response signal-to-disturbance power ratio; estimating the degree of non-stationarity of the disturbance at the receiver input; and selecting one of a plurality of processing routines for processing the digital samples based on said channel indicator. Related receivers are also described.
Abstract:
A method for operating an adapting device includes selecting a first access mode out of a plurality of access modes for a first transmission between a first communications device and a second communications device, wherein the selection of the first access mode is made in accordance with an access mode criterion, and at least one of communications system information, and user equipment information, and determining sparse code multiple access (SCMA) parameters from the first access mode in accordance with a SCMA parameter mapping rule. The method also includes providing information about the first access mode to at least one of the first communications device and the second communications device.
Abstract:
A method of managing baseband resources in a mobile communications network, wherein at least one interference cancellation technique in uplink is available, the method comprising the steps of: when baseband resources are demanded by a mobile user, determining whether there are free baseband resources or not, and: if there are not free baseband resources, determining whether there is at least one interference cancellation process cancelling the interference caused by at least one mobile user or not, and: if there is at least one interference cancellation process cancelling the interference caused by at least one mobile user, one mobile user is removed from said interference cancellation process.
Abstract:
This disclosure is directed to a wireless receiver and a method for configuring the wireless receiver, comprising the actions of determining a geometry factor for a channel over which signals are transmitted to the wireless receiver, the geometry factor being a measure indicative of inter-cell interference plus noise power at the wireless receiver; determining the variance of the determined geometry factor, the variance being a measure indicative of the variation in time or rate of the geometry factor; and configuring the wireless receiver based on the geometry factor and the variance of the geometry factor.
Abstract:
Techniques are described for optimizing processing facilities of a receiver in a wireless communication environment, taking into consideration processing performance set against the computing resources and/or power consumption required to obtain the processing performance. An embodiment of a radio receiver is described that includes a channel equalization means arranged to receive digital samples of an incoming signal and to generate an equalized output, said channel equalization means including means for processing said digital samples in accordance with an equalizer algorithm utilizing a set of equalizer parameters. The receiver can include means for estimating at least one parameter of a channel over which the signal has been received, and means for selecting at least one of said equalizer parameters based on at least one of said estimated channel parameters. Related methods, algorithms, and computer program products are also described.
Abstract:
A rake receiver having a rake receiver finger operated in a time multiplexed manner to perform the task a plurality of fingers, each of these fingers being a virtual finger allocated to a time slot in an operation cycle of the rake receiver finger, and wherein a buffer is provided for buffering at least one received chip of data, and where a spare virtual finger is provided such that any virtual finger may request extra processing within an operation cycle of the time multiplexed rake receiver finger.
Abstract:
The present invention discloses a GSM/CDMA dual-mode mobile phone and method of the same for inhibiting a GC mutual interference, wherein the mobile phone comprises a dual-port antenna connected respectively with a duplexer and a GSM RF circuit and configured to access the signals of the GSM and the CDMA; a RF switch provided in the CDMA RF receiving circuit, wherein the RF switch is controlled by a GSM baseband chip and configured to cut off a CDMA signal (i.e., cutting off a receiving path of the CDMA) transmitted/received by the dual-port antenna when a GSM operational frequency and a CDMA operational frequency belong to close frequency band during a transmitting timeslot of the GSM, to enhance the isolation between a GSM signal and a CDMA signal. The present invention inhibits interference of GSM transmission with the CDMA receiving in the circuit, achieves high isolation, and also simplifies design of the antennas, lowers requirements of the double antennas on the appearance and volume of the overall machine, and improves the flexibility in the design of the dual-mode mobile phone.
Abstract:
A base station for controlling transmission power during the establishment of a communication channel utilizes the reception of a short code during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional access code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The power of the short code is quickly increased until the signal is detected by the base station. Once the base station detects the short code, it transmits an indication that the short code has been detected.
Abstract:
A User Equipment (UE) receives and samples communication signals, where the communication signals have a time frame format, a transmission chip rate and a synchronization code associated with a time slot that includes a midamble that indicates a modulation of the synchronization code where a specified modulation of received synchronization codes identifies the timing for a timeslot in which data is to be received. The UE preferably includes a synchronization code determination circuit, a midamble determination circuit, and a phase modulation sequence detection circuit operatively associated with the midamble determination circuit. The UE can be configured for use with the low chip rate option of the Third Generation Partnership Project (3GPP) Universal Mobile Telecommunication System (UMTS) standards that employ a predefined set of downlink SYNC codes that point to midambles which indicate SYNC code modulation sequence to enables reading of data in a subsequent Broadcast Channel (BCH) message.