Abstract:
According to the teachings presented herein, wireless communication network interference is reduced by sending handover measurement information from mobile stations in conjunction with sending uplink scheduling requests, and by correspondingly making combined handover and uplink resource scheduling decisions. In this context, the combined decision considers both the handover measurement information and the uplink scheduling request, and determines whether a serving cell grants or denies the request and whether handover from the serving cell to a neighboring cell is or is not initiated for the mobile station. The combined determination provides for timely handover of the mobile station, such as where the mobile station is operating near a cell edge and issues an uplink scheduling request to its currently serving cell.
Abstract:
In a wireless network using a carrier sense multiple access (CSMA) scheme is provided a method, system, devices and instruction sets for detecting transmission levels and adjusting the transmission levels for both a connection point and mobile stations within the network in order to reduce power consumption in network devices and minimize interference problems while keeping hidden node problems on a controlled level.
Abstract:
In a method of selecting an access network from among one or more access networks capable of providing service to a mobile communication station, a radio quality from the terminal to each access network is determined (S1), for each access network, a utilization factor for at least one node is determining (S2), for each access network, a user perceived data quality, based on said determined utilization factor and said determined radio quality for the access network, is determined (S3), and at least one of said access networks, is selected (S4) based on the determined user perceived quality, whereby an improved user perceived data quality is enabled.
Abstract:
According to embodiment of the present invention, there is provided a radio base station (20) and a corresponding method for estimating the quality of the uplink control channel. The method comprises measuring (32, 42) a quality parameter of the uplink data channel, and using (38, 50) this to estimate the quality of the uplink control channel. In one embodiment, measurements of the uplink control channel are taken and their reliability determined. If the reliability is low (i.e. below a threshold, or below the respective measurements taken on the uplink data channel), then measurements on the data channel are used instead of those made on the control channel to estimate the control channel quality.
Abstract:
A system includes a first device (110) to classify data as one of a control message or a non-control message, and provide the classification of the data to a second device (122). The second device (122) receives the classification of the data, receives information associated with a resource (460), calculates an expected interference associated with the resource (460) based on the information associated with the resource (460), and allocates, to the resource (460), data classified as a control message when the expected interference corresponds to a low expected interference.
Abstract:
Method and arrangement in a mobile terminal for predicting future data communication performance of transmissions between a base station and the mobile terminal. The base station and the mobile terminal are comprised in a wireless communication system. The method comprises receiving information from the base station, concerning the relation between distribution characteristics and the performance of established data communications via the base station, comparing the own distribution characteristics of the mobile terminal with the received information, determining the own predicted data communication performance based on the made comparison between the own distribution characteristics and the received information, and displaying the determined own predicted data communication performance on a display of the mobile terminal. Also, a method and arrangement in a base station for assisting a mobile terminal in predicting future data communication performance of transmissions is comprised.
Abstract:
A method is disclosed for use in a heterogeneous telecommunications system of the kind comprising a macro base station and a low-power base station, the low-power base station having a coverage which is extendible by range expansion, RE, to serve a user equipment which would otherwise have been served by the macro base station. According to the method, which is performed in either of the macro base station or the low-power base station, information about radio conditions of the user equipment at least with respect to the macro base station is obtained (310). Based on the obtained information, it is determined (320) whether a criterion for conditional range expansion is satisfied, said criterion being related to the uplink transmission power of the user equipment to the macro base station. Accordingly, range expansion is applied (330) for the user equipment only when the criterion is satisfied. A corresponding base station, telecommunications system and computer readable storage medium are also disclosed.
Abstract:
A method in a base station for calculating a power relating to a first radio access is provided. The power is to be shared with a second radio access within the base station. The base station communicates with a number of user equipments using the first radio access. When the base station has estimated a statistic power distribution of transmit power to said user equipments during a time interval, it calculates a margin of power not to be shared with the second radio access, based on the estimated statistic power distribution. The base station further calculates a power to be shared with the second radio access, based on said margin of power.
Abstract:
Method and arrangement in a network entity for supporting link adaptation in a wireless communication system. The method comprises obtaining 204 one or more predicted parameters related to the quality of a radio link. The method further comprises measuring 206 one or more actual parameters, corresponding to the one or more predicted parameters. The method further comprises deriving 208 one or more error distributions based on the difference between the predicted and actual one or more parameters, from which error distributions a link adaptation margin estimate is derived, based on a predetermined radio link quality target. The link adaptation margin estimate is then used for supporting link adaptation for the radio link.
Abstract:
A method of estimating path loss for a channel between a user equipment and a base station of a wireless communication system, the method performed at the base station and comprising the steps of: measuring (302) a signal power PSDrx for a received signal transmitted from the user equipment to the base station on the channel; and estimating (304) a path loss PL*, based on the measured signal power PSDrx and a path loss compensation value α associated with the base station. A base station and a computer readable medium is also described.