Patent application number | Description | Published |
20080240215 | RESPONSE PROBABILITY CALCULATING DEVICE AND METHOD, AND BASE STATION CONTROL DEVICE AND COMMUNICATION SYSTEM USING THE SAME - There is provided a response probability calculating method for use in a communication system in which a response probability is sent from a communication network to a plurality of terminals, and the terminals report terminal information to the communication network according to the response probability, including a step of selecting a first calculation formula for monotonously increasing the response probability or a second calculation formula for calculating the response probability using the response probability sent at the previous time and the previous number of responses in accordance with the number of responses from the terminals, and a step of calculating the response probability in accordance with the selected calculation formula. | 10-02-2008 |
20090154400 | RADIO NETWORK CONTROLLING METHOD, RADIO COMMUNICATION SYSTEM AND RADIO NETWORK CONTROLLER - When determination is made that a channel for high-speed downlink packet transmission is short in power by the calculation of power assigned to a downlink shared channel and an activity ratio of the power assigned to the downlink shared channel from transmission power of all the channels and transmission power of other channel than a downlink shared channel for high-speed downlink packet transmission, a total sum of transmission power of dedicated channels is reduced by lowering a rate of a connected dedicated channel for data reception, thereby increasing power assigned to the channel for high-speed downlink packet transmission. | 06-18-2009 |
20100103828 | CELLULAR SYSTEM, COMMUNICATION PATH QUALITY MEASURING METHOD, BASE STATION, AND MOBILE STATION - A cellular system comprises a mobile station and a base station. The mobile station includes a means for transmitting a pilot signal synchronized with data transmission and a means for transmitting a pilot signal not synchronized with data transmission. The base station includes a means for measuring an interference power based on the received power of the field of the pilot signal synchronized with data transmission, a means for measuring a desired wave power based on the received power of the field of the pilot signal not synchronized with data transmission, and a means for estimating the channel quality of the mobile station based on the interference power and the desired wave power. | 04-29-2010 |
20100203886 | TRANSMISSION CONTROL METHOD AND TRANSMISSION CONTROL DEVICE - A transmission control device determines cells, each of which has the number of reception users larger than a predetermined value, as a first group and sends data to the first group cells in the point-to-multipoint transmission mode. The transmission control device also determines cells, each of which has a few MBMS reception users and whose neighboring cell is a first group cell, as a second group and sends data to those cells in the point-to-multipoint transmission mode. The transmission control device sends data to other cells in the point-to-point transmission mode. In this way, the transmission control device selects cells to which data is sent in the point-to-multipoint transmission mode and, at the same time, allows a mobile station near the boundary of those cells to acquire a combining effect. Resource consumption amounts and improve coverage rate can be reduced when same data is sent to multiple mobile stations located in multiple cells. | 08-12-2010 |
20100240384 | RESOURCE ALLOCATION METHOD IN COMMUNICATION SYSTEM, RESOURCE ALLOCATION SYSTEM, AND BASE STATION USED FOR THE SAME - The present invention aims to provide a resource allocation method in a communication system that can effectively suppress a transmission delay. Provided is a resource allocation system in a communication system which includes a terminal | 09-23-2010 |
20110022714 | CONTROL DEVICE, COMMUNICATION SYSTEM, RESOURCE ALLOCATION METHOD, AND RECORDING MEDIUM CONTAINING PROGRAM - When allocating a resource to a user equipment significantly affected by interference with an adjacent communication area in an uplink, the throughput of the adjacent communication area using the same resource is improved as well as suppressing degradation of the throughput of the user equipment to which the resource is allocated. A control device ( | 01-27-2011 |
20110225301 | METHOD OF ALLOCATION OF RESOURCE, COMMUNICATIONS SYSTEM, BASE STATION, AND PROGRAM - A base station ( | 09-15-2011 |
20110317563 | COMMUNICATION DEVICE AND RESOURCE REALLOCATION METHOD IN RADIO COMMUNICATIONS SYSTEM - A resource reallocation method that can suppress variations in reception delay time in reservation-type scheduling and a communication device using the method are provided. In a radio communications system in which a radio resource is reserved to periodically perform a communication between communication devices, the number of retransmissions of a packet transmitted to a communication device using the reserved radio resource (Step S | 12-29-2011 |
20120021798 | COMMUNICATION DEVICE AND ITS TRANSMISSION POWER CONTROL METHOD IN RADIO COMMUNICATIONS SYSTEM - A transmission power control method and a communication device using it are provided that can prevent the delay of a receipt from increasing and varying in reservation-type scheduling. In a radio communications system in which a radio resource is reserved (step S | 01-26-2012 |
20120039205 | BASE STATION APPARATUS, RADIO COMMUNICATION SYSTEM, CONTROL METHOD OF BASE STATION, AND CONTROL METHOD OF RADIO COMMUNICATION SYSTEM - One object of the present invention is to make a base station detect inconsistency between an uplink maximum transmission power P_CMAX actually set by a mobile station, and a maximum transmission power P_EMAX allowed by the base station for the mobile station without making the mobile station report to the base station about a transmission power upper-limit value P_UMAX associated with a power class of the mobile station. A base station ( | 02-16-2012 |
20120214529 | RADIO RESOURCE RANGE SETTING DEVICE, RADIO RESOURCE RANGE SETTING METHOD, AND RECORDING MEDIUM - A device acquires load information representing a load of radio communication performed between a base station and a plurality of communication terminals performing radio communication with the base station by using a radio resource allocated by the base station. The device sets in response to the acquired load information, from a first radio resource range and a second radio resource range, a radio resource range that the base station can allocate to an edge communication terminal whose channel quality is less than a predetermined threshold. | 08-23-2012 |
20120224545 | BASE STATION, RADIO RESOURCE ALLOCATION METHOD, AND RECORDING MEDIUM - For a communication terminal performing radio communication, a base station acquires communication path quality information representing a communication path quality, which is the quality of a communication path with the communication terminal. The base station allocates power larger than reference transmission power as transmission power to an edge terminal configuring at least part of an edge terminal group configured by an edge terminal that is a communication terminal whose communication path quality is lower than a threshold quality, allocates the reference transmission power as the transmission power to an edge terminal configuring a remaining part of the edge terminal group. | 09-06-2012 |
20120257497 | METHOD FOR SELECTING ALLOCABLE WIRELESS RESOURCES, DEVICE FOR SELECTING ALLOCABLE WIRELESS RESOURCES, AND COMMUNICATION DEVICE - A communication device in wireless communication with another communication device or devices includes an index value calculation unit, a congestion degree measuring unit, a threshold value setting unit, and a determination unit. The index value calculation unit calculates an index value according to each of the other communication devices for determining whether or not to let a wireless resource utilized for communications with the other communication device be a candidate allocated to the other communication device based on the quality of a channel to the other communication device. The congestion degree measuring unit measures a congestion degree between itself and the other communication device. The threshold value setting unit calculates a threshold value for determining whether or not to let the wireless resource be the candidate allocated to the other communication device based on the measured congestion degree. The determination unit compares the index value with the threshold value to determine whether or not to let the wireless resource be the candidate allocated to the other communication device. | 10-11-2012 |
20120264472 | BASE STATION, COMMUNICATION TERMINAL, USABLE RADIO RESOURCE SETTING METHOD, AND BASE STATION CONTROL PROGRAM - Provided is a setting method for the usable resource for a communication terminal which, while suppressing an inter-adjacent-cell interference, improves a selection flexibility for a band for the communication terminal subjected to a strong influence of the adjacent-cell interference. A base station, which performs radio communications with a communication terminal within a main communication area, includes: a priority band setting unit that sets a main priority radio resource that can be used for the main communication area on a higher priority basis than for a communication area adjacent to the main communication area, and acquires a particular priority radio resource that can be used for at least one particular communication area adjacent to the main communication area on a higher priority basis than for a communication area adjacent to the at least one particular communication area; and a usable band setting unit that acquires a communication quality difference regarding the communication terminal between communication quality related to the main communication area and communication quality related to the at least one particular communication area, and sets the main priority radio resource to which at least one particular priority radio resource is added, as usable radio resources for the communication terminal when at least one condition that the communication quality difference is larger than a threshold value is fulfilled. | 10-18-2012 |
20130005380 | SETTING APPARATUS, COMMUNICATION SYSTEM, BASE STATION, AND PROGRAM - This invention is directed to provision of a technique for dynamically performing a priority band establishment that can achieve the suppression of interference between adjacent cells. This invention is characterized in that: a base-point resource block, which serves as a base point in establishing a priority resource block to be used, on a priority basis, by a terminal for which the quality of a communication path does not meet a predetermined quality, is so decided as to be different from the base-point resource block of an adjacent communication area; and the priority resource block is established, based on a communication load, in a predetermined order with the decided base-point resource block used as the base point | 01-03-2013 |
20130072246 | WIRELESS RESOURCE SETTING METHOD, WIRELESS COMMUNICATION SYSTEM, WIRELESS BASE STATION, AND PROGRAM - A wireless base station ( | 03-21-2013 |
20130143579 | COMMUNICATION APPARATUS, METHOD, AND COMPUTER IMPLEMENTABLE PRODUCT FOR ADMISSION CONTROL - A communications apparatus is described which is capable of auto-tuning a cell admission threshold value used to control admission into a communications network. The apparatus obtains an outage rate for one or more current calls at a node in the network, and also a blocking rate of the rate at which admission requests at the node are blocked and uses these rates to adjust a load threshold to be used in admission control decisions. The apparatus then controls admission of calls at the node in dependence on an estimated current load and the load threshold. | 06-06-2013 |
20140161083 | RESOURCE ALLOCATION METHOD, WIRELESS COMMUNICATION SYSTEM, BASE STATION, AND PROGRAM - The present invention is a wireless resource allocation method for a base station performing data communication with a wireless terminal with traffic having periodicity in intervals of occurrence, the method comprising: acquiring communication channel quality for the terminal; in case that the communication channel quality is greater than, or is equal to or greater than a threshold for quality decision, selecting a reservation-type scheduling method with which cyclically usable wireless resources are reserved; in case that the communication channel quality is equal to or smaller than, or is smaller than the threshold for quality decision, selecting a non-reservation-type scheduling method with which allocation information is notified to the terminal each time wireless resources are allocated; and performing data communication with the terminal using the selected scheduling method. | 06-12-2014 |
20150049703 | COMMUNICATION CHANNEL QUALITY ESTIMATING METHOD, WIRELESS COMMUNICATIONS SYSTEM, BASE STATION, AND PROGRAM - The present invention addresses the problem of providing technology which increases the accuracy for estimating quality of a communication channel even in a case in which transmission time limit frames have been set between neighboring cells. The present application relates to quality estimation of a communication channel used by a base station for performing wireless communication with a terminal within a communication area, and is characterized in acquiring quality information for the communication channel between the base station and the terminal, acquiring reception error information related to reception errors for data communication using the communication channel, acquiring transmission time-limit frame information set by a neighboring base station of the base station, updating correction values in accordance with setting information for the transmission time-limit frame information and the reception error information, and estimating the quality of the communication channel using the correction values and the acquired quality information. | 02-19-2015 |