摘要:
A method of controlling femtocell interference considering a macrocell is provided. The method of controlling the interference includes a method of setting transmission power of the femtocell and methods of avoiding the interference of the femtocell. The methods of avoiding the interference include a PRB rotation method, a PRB transmission power restriction method, a hybrid method and a UB rotation method. The method of setting the transmission power and the methods of avoiding the interference may be implemented independently or implemented in combination with each other. Hence, according to the present invention, the femtocell itself can control the interference without affecting an interface of an existing macrocell base station and without signaling through the interface with the macrocell.
摘要:
A technology for inter-cell interference control is provided. In one general aspect, the inter-cell interference may be controlled by resource allocation scheduling or power management. A cell may be divided into a plurality of regions. A constant available resource band and a selectively available band are allocated to each region. Each of the allocated resource bands is assigned with an interference characteristic. The resource allocation scheduling and the power management are performed according to the resources allocated to the respective regions and the interference characteristics assigned to the respective resources.
摘要:
Provided are a physical downlink control channel (PDCCH)-based scheduling method and apparatus suitable for use by a base station in a long-term evolution (LTE) system. The scheduling method includes: determining an aggregation level of a common search space of a PDCCH by considering channel quality of a plurality of user equipments (UEs); identifying the number of PDCCH candidates and the number of messages, which require allocation of the common search space, based on the determined aggregation level and selecting messages by a smaller number of the number of messages and the number of PDCCH candidates; and allocating PDCCH resources and physical downlink shared channel (PDSCH) resources for the selected messages. In a situation where the PDCCH resources are shared by downlink scheduling information and uplink scheduling information of different UEs, the PDCCH resource-based scheduling method can be used by the base station to efficiently utilize the PDCCH resources.
摘要:
Disclosed is a mobility management method for use in a cellular mobile communication system. The mobility management method is configured to save radio resources and provide a stable service by detecting a cell in which a dwell time of user equipment (UE) is short as an island cell and performing a direct handover (HO) to an appropriate cell without handing over the UE to the island cell. There are provided three methods including a base station-based method, a UE measurement-based method, and a UE history-based method according to how to measure a dwell time in which the UE stays in a cell, a component in which obtained information is received within a network, and how to process an HO using the information.
摘要:
A method and apparatus for controlling interference between cells for non-real time data transfer in a mobile communication network is provided. The method of controlling interference between cells in a mobile communication system including a plurality of cells includes: dividing each cell into at least one segment based on density of terminals within each cell and distance from the center of each cell; allocating rise over thermal (RoT) with respect to each segment based on the distance from the center of each cell, an attenuation ratio according to the distance, and a shadowing factor; and providing data services to terminals within each segment according to the allocated RoT. Accordingly, it is possible to improve system throughput.
摘要:
There is provided a method for deciding a transmission priority of non-realtime data, the method including: receiving a user requested data transfer rate; confirming an average data transfer rate allocated previously to a user terminal; and deciding a transmission priority using the received user requested data transfer rate and the previously allocated average data transfer rate.
摘要:
In a bandwidth allocation method and/or apparatus for adaptively allocating radio channels in a mobile communication system, a token bucket is periodically filled with an amount of tokens that corresponds to a requested amount of bandwidth, and a bandwidth is allocated in accordance with the amount of tokens in the token bucket. In a further bandwidth allocation method and/or apparatus for adaptively allocating radio channels in a mobile communication system, a packet classification module classifies received packets on the basis of one of an Internet Protocol address, a port, and an upper layer protocol, a packet scheduler module receives the classified packet from a buffer module for transmission to a mobile station, and a bandwidth allocation module forms the buffer module for bandwidth allocation and processes traffic services by inter-working with the packet scheduler module when the bandwidth allocation is requested.
摘要:
A technology for inter-cell interference control is provided. In one general aspect, the inter-cell interference may be controlled by resource allocation scheduling or power management. A cell may be divided into a plurality of regions. A constant available resource band and a selectively available band are allocated to each region. Each of the allocated resource bands is assigned with an interference characteristic. The resource allocation scheduling and the power management are performed according to the resources allocated to the respective regions and the interference characteristics assigned to the respective resources.
摘要:
In a QoS information controller and method, the QoS information controller is used in a multi-cell environment to determine the traffic characteristic, the mobile communication system characteristic, the traffic processing capacity, and the radio resource, and to control the QoS information. In addition, a QoS requested by a user may be achieved since the traffic characteristic, the mobile communication system characteristic, the traffic processing capacity, and the radio resource are determined and the QoS information is controlled to efficiently process the QoS information for the multimedia traffic in the multi-cell environment.
摘要:
The present invention is a method of controlling call setup, which accepts a request for setting a call when a first ratio of free resource blocks for uplink during a first monitoring unit time just before receiving the request is more than or equal to a first call acceptance threshold for uplink and a second ratio of free resource blocks for downlink during the first monitoring unit time is more than or equal to a second call acceptance threshold for downlink. When the first ratio is less than the first call acceptance threshold or the second ratio is less than the second call acceptance threshold, the call is queued for a queuing unit time. The call is accepted when a ratio of free resource blocks for uplink during a second monitoring unit time just before terminating the queuing unit time is more than or equal to the first call acceptance threshold and a ratio of free resource blocks for downlink during the second monitoring unit time is more than or equal to the second call acceptance threshold.