US 8,897,798 B2Granted

Methods and apparatus for radio resource allocation

AssigneeNokia Siemens Networks Oy

InventorsRajeev Agrawal, Naveen Arulselvan, Suresh Kalyanasundaram, Rangsan Leelahakriengkrai, Balamurali Natarajan, Hua Xu

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Abstract

Systems and techniques for scheduling of use of resources by wireless devices and allocation of resources among devices. Information is received relating to channel efficiency experienced by a user equipment and also to the channel efficiency experienced by other user equipments. The information may include channel gain. Scheduling and resource allocation are performed so as to provide service to each device while minimizing interference penalties imposed by devices on one another. Scheduling and resource allocation may be evaluated and conducted through a number of mechanisms, such as ranking users according to transmit power, ranking user equipments according to target signal to noise ratios, and evaluation of relative advantages to users with the evaluation being performed resource block by resource block. The various metrics take into account both advantages to a particular user equipment under consideration and detrimental effects on other user equipment.

Claims14

Dependent claims

A method comprising:

computing relative uplink channel gain of a user equipment to its serving and neighboring cell base stations, wherein computing the relative uplink channel gain comprises taking into account channel gain to the user equipment's serving and neighboring cell base stations and wherein the relative uplink channel gain information is calculated using an uplink sounding reference signal received from the user equipment by the user equipment's serving base station;
computing one or more parameters for scheduling and resource allocation among the user equipment and additional user equipments, wherein the one or more parameters are calculated so as to take into account the relative uplink channel gain of the user equipment and a weighting associated with the user equipment;
wherein at least one of the one or more parameters is calculated so as to maximize overall uplink throughput among all of a plurality of user equipments while providing at least a guaranteed minimum throughput to all users capable of transmitting the guaranteed minimum throughput;
wherein at least one of the one or more parameters takes into account the throughput provided to a user equipment by allocation of a resource block against average throughput provided to the user equipment;
wherein computing the one or more parameters is based at least in part on an analysis of benefit to the user equipment of allocation of a resource in light of an interference penalty imposed by the allocation on neighboring cell base stations;
and
wherein resource blocks are allocated to user equipments in contiguous groups with the size of a contiguous group assigned to a user equipment being computed based at least in part on a target number of resource blocks computed for the user equipment.

4 more elements

An apparatus comprising:

a processor;
memory storing a program of instructions, wherein the program of instructions are configured, with the processor and the memory, to cause the apparatus to perform at least the functions of:
computing relative uplink channel gain of a user equipment to its serving and neighboring cell base stations;
wherein computing the relative uplink channel gain comprises taking into account channel gain of the user equipment to its serving and neighboring cell base stations and wherein the relative uplink channel gain information is calculated using an uplink sounding reference signal received from the user equipment by the user equipment's serving base station;
computing one or more parameters for scheduling and resource allocation among the user equipment and the other user equipments, wherein the one or more parameters are calculated so as to take into account the computed relative uplink channel gain of the user equipment and a weight value assigned to the user equipment, wherein at least one of the one or more parameters is calculated so as to maximize overall uplink throughput among all of a plurality of user equipments while providing at least a guaranteed minimum throughput to all users capable of transmitting the guaranteed minimum throughput;
wherein computation of at least one of the one or more parameters takes into account the throughput provided to a user equipment by allocation of a resource block against average throughput provided to the user equipment;
wherein computing the one or more parameters is based at least in part on an analysis of benefit to the user equipment of allocation of a resource in light of an interference penalty imposed by the allocation on neighboring cell base stations;
and
wherein resource blocks are allocated to user equipments in contiguous groups with the size of a contiguous group assigned to a user equipment being computed based at least in part on a target number of resource blocks computed for the user equipment.

6 more elements

Dependencies are inferred from the claim text.