摘要:
The present invention relates to a method, device and system for handling short data packets, such as speech packets, in a communications network, and in particular a wireless local area network. The present invention is based on collecting several data packets from several users active on the network in one data transmittal protocol packet, transmitting this protocol, and receiving the protocol wherein the each of the several data packets are addressed to specific destinations. This reduces the overhead/data ratio and thus increases the capacity of the network.
摘要:
Route selection through a wireless mesh network between a source node and a destination node is based on minimizing generated interference in order to increase the capacity of the network. An interference energy associated with transmitting a packet over each hop in multiple routes from the source node to the destination node is determined. The interference energy for each hop is combined to generate a combined interference energy for each route. One of the routes is selected based on the combined interference energy determined for each route.
摘要:
In a mobile communication system having channels with different bandwidths, a channel bandwidth can be dynamically selected for transmitting data over a connection between a radio access network and a mobile station. According to the invention, a channel bandwidth and also a target for a data error rate for the transmission is selected based on a determined transmission need, i.e. a determined characteristics of the data to be transmitted and on a determined load of a communication resource, e.g. channel power and/or total carrier power used in a cell. By making it possible to dynamically select a data error rate, a connection can, by increasing the data error rate and consequently decreasing the channel power, carry on using a certain channel bandwidth even if at a first instance a load threshold level is achieved for the channel power or the total power used in the cell. Thereby, the capacity of the system can be increased, while at the same time the throughput over the connection is increased.
摘要:
In a method of selecting an access network from among one or more access networks capable of providing service to a mobile communication terminal, measuring (S1), for at least two access networks, an end-to-end quality through the whole communication path between the terminal and a destination node, and selecting (S2) at least one access based on said measured end-to-end quality.
摘要:
A method for downlink power control in wireless communication systems is provided. In response to a transmitter power change request from a mobile terminal (110) over a wireless connection, a power control parameter is determined at network level based on connection-specific information indicating the degree of priority of the connection (DPIi). The power control parameter preferably relates to a maximum connection-specific transmitter power, a power step size and/or a quality target, and is used by the base station to distribute transmitter power (pi) to the connection.
摘要:
Methods for downlink power control in wireless communication systems are provided. In response to a transmitter power change request from a mobile terminal (110) over a wireless connection, a base station (122) determines a power control parameter based on its current total transmitter power PDL. The power control parameter preferably relates to a maximum connection-specific transmitter power, a power step size and/or a power increase probability, and is used by the base station to distribute transmitter power pi to the connection.
摘要:
Method and arrangement in base station (110) for estimating the amount of data to be received from a terminal (120). The base station (110) and the terminal (120) are comprised within a wireless communication system (110). The terminal (120) comprises a buffer arranged to buffer frames comprising data. The method comprises determining (401) a service requested by the terminal (120), estimating (403) the arrival time of data to be received from the terminal (120), based on the determined service, and setting (404) a buffer estimate, comprising an estimation of the amount of data to be received, based on an estimated frame size for the determined service.
摘要:
Methods of load measurement for rate adaptive services are provided in a wireless communications network. The method includes receiving a plurality of packets associated with a bearer; calculating a measured bit rate for the plurality of packets received; and marking each of the plurality of packets received with information associated with the calculated measured bit rate, wherein the marked packets are used as input for admission control, congestion control and/or scheduling schemes for the wireless communications network. Related systems and computer program products are also provided.
摘要:
A method for use in a cellular system with a controlling node and user terminals, UEs. In the system, UEs can assume one of at least two states, a non-listening state, i.e. a state during which a UE does not listen for data from its controlling node, and a listening state, an “on duration” state. According to the method a UE in the system is able to alternate between said two states according to a certain scheme, the scheme according to which a UE in the system alternates between said two states being dependent on whether or not data units which are transmitted between the UE and its controlling node are received entirely and correctly within an initially allocated resource for each data unit.
摘要:
The present invention relates to a network node such as a base station for a wireless communications system, and to a method for supporting a change of a buffer estimation state of a user equipment from a passive to a proactive state. The method comprises receiving (410) information describing a buffer status of the user equipment, and determining (420) whether to change the buffer estimation state of the user equipment to the proactive state based on the received information. The purpose is to achieve a more correct UE buffer estimation state and thus better accuracy for the buffer estimation.